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authorwolfbeast <mcwerewolf@wolfbeast.com>2019-11-10 11:39:27 +0100
committerwolfbeast <mcwerewolf@wolfbeast.com>2019-11-10 11:39:27 +0100
commit974a481d12bf430891725bd3662876358e57e11a (patch)
treecad011151456251fef2f1b8d02ef4b4e45fad61a /js/src/vm
parent6bd66b1728eeddb058066edda740aaeb2ceaec23 (diff)
parent736d25cbec4541186ed46c935c117ce4d1c7f3bb (diff)
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Merge branch 'master' into js-modules
# Conflicts: # modules/libpref/init/all.js
Diffstat (limited to 'js/src/vm')
-rw-r--r--js/src/vm/ArgumentsObject.cpp72
-rw-r--r--js/src/vm/ArgumentsObject.h3
-rw-r--r--js/src/vm/ArrayBufferObject.cpp4
-rw-r--r--js/src/vm/ArrayBufferObject.h9
-rw-r--r--js/src/vm/AsyncFunction.cpp2
-rw-r--r--js/src/vm/Caches.h16
-rw-r--r--js/src/vm/CommonPropertyNames.h40
-rw-r--r--js/src/vm/Debugger.cpp58
-rw-r--r--js/src/vm/Debugger.h3
-rw-r--r--js/src/vm/EnvironmentObject.cpp38
-rw-r--r--js/src/vm/EnvironmentObject.h3
-rw-r--r--js/src/vm/ErrorObject.cpp8
-rw-r--r--js/src/vm/ErrorReporting.cpp124
-rw-r--r--js/src/vm/ErrorReporting.h91
-rw-r--r--js/src/vm/GeneratorObject.cpp14
-rw-r--r--js/src/vm/GlobalObject.cpp46
-rw-r--r--js/src/vm/GlobalObject.h241
-rw-r--r--js/src/vm/HelperThreads.cpp2
-rw-r--r--js/src/vm/Interpreter-inl.h17
-rw-r--r--js/src/vm/Interpreter.cpp92
-rw-r--r--js/src/vm/Interpreter.h3
-rw-r--r--js/src/vm/JSONParser.cpp4
-rw-r--r--js/src/vm/Keywords.h66
-rw-r--r--js/src/vm/NativeObject-inl.h40
-rw-r--r--js/src/vm/NativeObject.cpp70
-rw-r--r--js/src/vm/NativeObject.h74
-rw-r--r--js/src/vm/ObjectGroup-inl.h14
-rw-r--r--js/src/vm/ObjectGroup.cpp197
-rw-r--r--js/src/vm/ObjectGroup.h72
-rw-r--r--js/src/vm/Opcodes.h25
-rw-r--r--js/src/vm/ProxyObject.h2
-rw-r--r--js/src/vm/ReceiverGuard.cpp19
-rw-r--r--js/src/vm/ReceiverGuard.h5
-rw-r--r--js/src/vm/RegExpObject.cpp34
-rw-r--r--js/src/vm/RegExpObject.h11
-rw-r--r--js/src/vm/Runtime.cpp17
-rw-r--r--js/src/vm/Runtime.h25
-rw-r--r--js/src/vm/Scope.cpp28
-rw-r--r--js/src/vm/Scope.h131
-rw-r--r--js/src/vm/SelfHosting.cpp30
-rw-r--r--js/src/vm/Shape.cpp166
-rw-r--r--js/src/vm/Shape.h5
-rw-r--r--js/src/vm/SharedArrayObject.cpp3
-rw-r--r--js/src/vm/Stack-inl.h6
-rw-r--r--js/src/vm/Stack.cpp2
-rw-r--r--js/src/vm/Stack.h13
-rw-r--r--js/src/vm/Stopwatch.cpp48
-rw-r--r--js/src/vm/Stopwatch.h30
-rw-r--r--js/src/vm/String.h11
-rw-r--r--js/src/vm/StringObject-inl.h18
-rw-r--r--js/src/vm/StringObject.h2
-rw-r--r--js/src/vm/Time.cpp9
-rw-r--r--js/src/vm/TypeInference-inl.h5
-rw-r--r--js/src/vm/TypeInference.cpp314
-rw-r--r--js/src/vm/TypeInference.h89
-rw-r--r--js/src/vm/TypedArrayCommon.h21
-rw-r--r--js/src/vm/TypedArrayObject.cpp11
-rw-r--r--js/src/vm/UnboxedObject-inl.h840
-rw-r--r--js/src/vm/UnboxedObject.cpp2152
-rw-r--r--js/src/vm/UnboxedObject.h531
60 files changed, 1280 insertions, 4746 deletions
diff --git a/js/src/vm/ArgumentsObject.cpp b/js/src/vm/ArgumentsObject.cpp
index 717aa1050..66e0f40a2 100644
--- a/js/src/vm/ArgumentsObject.cpp
+++ b/js/src/vm/ArgumentsObject.cpp
@@ -214,7 +214,7 @@ ArgumentsObject::createTemplateObject(JSContext* cx, bool mapped)
? &MappedArgumentsObject::class_
: &UnmappedArgumentsObject::class_;
- RootedObject proto(cx, cx->global()->getOrCreateObjectPrototype(cx));
+ RootedObject proto(cx, GlobalObject::getOrCreateObjectPrototype(cx, cx->global()));
if (!proto)
return nullptr;
@@ -475,7 +475,7 @@ MappedArgSetter(JSContext* cx, HandleObject obj, HandleId id, MutableHandleValue
attrs &= (JSPROP_ENUMERATE | JSPROP_PERMANENT); /* only valid attributes */
RootedFunction callee(cx, &argsobj->callee());
- RootedScript script(cx, callee->getOrCreateScript(cx));
+ RootedScript script(cx, JSFunction::getOrCreateScript(cx, callee));
if (!script)
return false;
@@ -590,6 +590,64 @@ MappedArgumentsObject::obj_enumerate(JSContext* cx, HandleObject obj)
return true;
}
+// ES 2017 draft 9.4.4.2
+/* static */ bool
+MappedArgumentsObject::obj_defineProperty(JSContext* cx, HandleObject obj, HandleId id,
+ Handle<PropertyDescriptor> desc, ObjectOpResult& result)
+{
+ // Step 1.
+ Rooted<MappedArgumentsObject*> argsobj(cx, &obj->as<MappedArgumentsObject>());
+
+ // Steps 2-3.
+ bool isMapped = false;
+ if (JSID_IS_INT(id)) {
+ unsigned arg = unsigned(JSID_TO_INT(id));
+ isMapped = arg < argsobj->initialLength() && !argsobj->isElementDeleted(arg);
+ }
+
+ // Step 4.
+ Rooted<PropertyDescriptor> newArgDesc(cx, desc);
+ if (!desc.isAccessorDescriptor() && isMapped) {
+ // In this case the live mapping is supposed to keep working,
+ // we have to pass along the Getter/Setter otherwise they are overwritten.
+ newArgDesc.setGetter(MappedArgGetter);
+ newArgDesc.setSetter(MappedArgSetter);
+ }
+
+ // Steps 5-6. NativeDefineProperty will lookup [[Value]] for us.
+ if (!NativeDefineProperty(cx, obj.as<NativeObject>(), id, newArgDesc, result))
+ return false;
+ // Step 7.
+ if (!result.ok())
+ return true;
+
+ // Step 8.
+ if (isMapped) {
+ unsigned arg = unsigned(JSID_TO_INT(id));
+ if (desc.isAccessorDescriptor()) {
+ if (!argsobj->markElementDeleted(cx, arg))
+ return false;
+ } else {
+ if (desc.hasValue()) {
+ RootedFunction callee(cx, &argsobj->callee());
+ RootedScript script(cx, JSFunction::getOrCreateScript(cx, callee));
+ if (!script)
+ return false;
+ argsobj->setElement(cx, arg, desc.value());
+ if (arg < script->functionNonDelazifying()->nargs())
+ TypeScript::SetArgument(cx, script, arg, desc.value());
+ }
+ if (desc.hasWritable() && !desc.writable()) {
+ if (!argsobj->markElementDeleted(cx, arg))
+ return false;
+ }
+ }
+ }
+
+ // Step 9.
+ return result.succeed();
+}
+
static bool
UnmappedArgGetter(JSContext* cx, HandleObject obj, HandleId id, MutableHandleValue vp)
{
@@ -804,6 +862,11 @@ const ClassOps MappedArgumentsObject::classOps_ = {
ArgumentsObject::trace
};
+const ObjectOps MappedArgumentsObject::objectOps_ = {
+ nullptr, /* lookupProperty */
+ MappedArgumentsObject::obj_defineProperty
+};
+
const Class MappedArgumentsObject::class_ = {
"Arguments",
JSCLASS_DELAY_METADATA_BUILDER |
@@ -811,7 +874,10 @@ const Class MappedArgumentsObject::class_ = {
JSCLASS_HAS_CACHED_PROTO(JSProto_Object) |
JSCLASS_SKIP_NURSERY_FINALIZE |
JSCLASS_BACKGROUND_FINALIZE,
- &MappedArgumentsObject::classOps_
+ &MappedArgumentsObject::classOps_,
+ nullptr,
+ nullptr,
+ &MappedArgumentsObject::objectOps_
};
/*
diff --git a/js/src/vm/ArgumentsObject.h b/js/src/vm/ArgumentsObject.h
index 247c7cd94..988e41951 100644
--- a/js/src/vm/ArgumentsObject.h
+++ b/js/src/vm/ArgumentsObject.h
@@ -389,6 +389,7 @@ class ArgumentsObject : public NativeObject
class MappedArgumentsObject : public ArgumentsObject
{
static const ClassOps classOps_;
+ static const ObjectOps objectOps_;
public:
static const Class class_;
@@ -410,6 +411,8 @@ class MappedArgumentsObject : public ArgumentsObject
private:
static bool obj_enumerate(JSContext* cx, HandleObject obj);
static bool obj_resolve(JSContext* cx, HandleObject obj, HandleId id, bool* resolvedp);
+ static bool obj_defineProperty(JSContext* cx, HandleObject obj, HandleId id,
+ Handle<JS::PropertyDescriptor> desc, ObjectOpResult& result);
};
class UnmappedArgumentsObject : public ArgumentsObject
diff --git a/js/src/vm/ArrayBufferObject.cpp b/js/src/vm/ArrayBufferObject.cpp
index 1053fa99d..392724b21 100644
--- a/js/src/vm/ArrayBufferObject.cpp
+++ b/js/src/vm/ArrayBufferObject.cpp
@@ -140,7 +140,7 @@ static const Class ArrayBufferObjectProtoClass = {
static JSObject*
CreateArrayBufferPrototype(JSContext* cx, JSProtoKey key)
{
- return cx->global()->createBlankPrototype(cx, &ArrayBufferObjectProtoClass);
+ return GlobalObject::createBlankPrototype(cx, cx->global(), &ArrayBufferObjectProtoClass);
}
static const ClassOps ArrayBufferObjectClassOps = {
@@ -344,7 +344,7 @@ ArrayBufferObject::detach(JSContext* cx, Handle<ArrayBufferObject*> buffer,
// Make sure the global object's group has been instantiated, so the
// flag change will be observed.
AutoEnterOOMUnsafeRegion oomUnsafe;
- if (!cx->global()->getGroup(cx))
+ if (!JSObject::getGroup(cx, cx->global()))
oomUnsafe.crash("ArrayBufferObject::detach");
MarkObjectGroupFlags(cx, cx->global(), OBJECT_FLAG_TYPED_OBJECT_HAS_DETACHED_BUFFER);
cx->compartment()->detachedTypedObjects = 1;
diff --git a/js/src/vm/ArrayBufferObject.h b/js/src/vm/ArrayBufferObject.h
index 6614f5220..e9c9bc0e0 100644
--- a/js/src/vm/ArrayBufferObject.h
+++ b/js/src/vm/ArrayBufferObject.h
@@ -457,8 +457,8 @@ ClampDoubleToUint8(const double x);
struct uint8_clamped {
uint8_t val;
- uint8_clamped() { }
- uint8_clamped(const uint8_clamped& other) : val(other.val) { }
+ uint8_clamped() = default;
+ uint8_clamped(const uint8_clamped& other) = default;
// invoke our assignment helpers for constructor conversion
explicit uint8_clamped(uint8_t x) { *this = x; }
@@ -469,10 +469,7 @@ struct uint8_clamped {
explicit uint8_clamped(int32_t x) { *this = x; }
explicit uint8_clamped(double x) { *this = x; }
- uint8_clamped& operator=(const uint8_clamped& x) {
- val = x.val;
- return *this;
- }
+ uint8_clamped& operator=(const uint8_clamped& x) = default;
uint8_clamped& operator=(uint8_t x) {
val = x;
diff --git a/js/src/vm/AsyncFunction.cpp b/js/src/vm/AsyncFunction.cpp
index f50c87114..e14b77424 100644
--- a/js/src/vm/AsyncFunction.cpp
+++ b/js/src/vm/AsyncFunction.cpp
@@ -118,7 +118,7 @@ js::WrapAsyncFunctionWithProto(JSContext* cx, HandleFunction unwrapped, HandleOb
RootedAtom funName(cx, unwrapped->explicitName());
uint16_t length;
- if (!unwrapped->getLength(cx, &length))
+ if (!JSFunction::getLength(cx, unwrapped, &length))
return nullptr;
// Steps 3 (partially).
diff --git a/js/src/vm/Caches.h b/js/src/vm/Caches.h
index 91a78bdc8..b11dd9dcb 100644
--- a/js/src/vm/Caches.h
+++ b/js/src/vm/Caches.h
@@ -7,6 +7,8 @@
#ifndef vm_Caches_h
#define vm_Caches_h
+#include <new>
+
#include "jsatom.h"
#include "jsbytecode.h"
#include "jsobj.h"
@@ -191,14 +193,20 @@ class NewObjectCache
char templateObject[MAX_OBJ_SIZE];
};
- Entry entries[41]; // TODO: reconsider size
+ using EntryArray = Entry[41]; // TODO: reconsider size;
+ EntryArray entries;
public:
- typedef int EntryIndex;
+ using EntryIndex = int;
+
+ NewObjectCache()
+ : entries{} // zeroes out the array
+ {}
- NewObjectCache() { mozilla::PodZero(this); }
- void purge() { mozilla::PodZero(this); }
+ void purge() {
+ new (&entries) EntryArray{}; // zeroes out the array
+ }
/* Remove any cached items keyed on moved objects. */
void clearNurseryObjects(JSRuntime* rt);
diff --git a/js/src/vm/CommonPropertyNames.h b/js/src/vm/CommonPropertyNames.h
index e971dc844..fd1c9f5e6 100644
--- a/js/src/vm/CommonPropertyNames.h
+++ b/js/src/vm/CommonPropertyNames.h
@@ -38,6 +38,7 @@
macro(Bool32x4, Bool32x4, "Bool32x4") \
macro(Bool64x2, Bool64x2, "Bool64x2") \
macro(boundWithSpace, boundWithSpace, "bound ") \
+ macro(break, break_, "break") \
macro(breakdown, breakdown, "breakdown") \
macro(buffer, buffer, "buffer") \
macro(builder, builder, "builder") \
@@ -52,8 +53,10 @@
macro(callee, callee, "callee") \
macro(caller, caller, "caller") \
macro(callFunction, callFunction, "callFunction") \
+ macro(case, case_, "case") \
macro(caseFirst, caseFirst, "caseFirst") \
- macro(class_, class_, "class") \
+ macro(catch, catch_, "catch") \
+ macro(class, class_, "class") \
macro(close, close, "close") \
macro(Collator, Collator, "Collator") \
macro(CollatorCompareGet, CollatorCompareGet, "Intl_Collator_compare_get") \
@@ -62,10 +65,14 @@
macro(comma, comma, ",") \
macro(compare, compare, "compare") \
macro(configurable, configurable, "configurable") \
+ macro(const, const_, "const") \
macro(construct, construct, "construct") \
macro(constructContentFunction, constructContentFunction, "constructContentFunction") \
macro(constructor, constructor, "constructor") \
+ macro(continue, continue_, "continue") \
macro(ConvertAndCopyTo, ConvertAndCopyTo, "ConvertAndCopyTo") \
+ macro(CopyDataProperties, CopyDataProperties, "CopyDataProperties") \
+ macro(CopyDataPropertiesUnfiltered, CopyDataPropertiesUnfiltered, "CopyDataPropertiesUnfiltered") \
macro(copyWithin, copyWithin, "copyWithin") \
macro(count, count, "count") \
macro(CreateResolvingFunctions, CreateResolvingFunctions, "CreateResolvingFunctions") \
@@ -76,28 +83,32 @@
macro(DateTimeFormatFormatToParts, DateTimeFormatFormatToParts, "Intl_DateTimeFormat_formatToParts") \
macro(day, day, "day") \
macro(dayPeriod, dayPeriod, "dayPeriod") \
+ macro(debugger, debugger, "debugger") \
macro(decodeURI, decodeURI, "decodeURI") \
macro(decodeURIComponent, decodeURIComponent, "decodeURIComponent") \
macro(DefaultBaseClassConstructor, DefaultBaseClassConstructor, "DefaultBaseClassConstructor") \
macro(DefaultDerivedClassConstructor, DefaultDerivedClassConstructor, "DefaultDerivedClassConstructor") \
- macro(default_, default_, "default") \
+ macro(default, default_, "default") \
macro(defineGetter, defineGetter, "__defineGetter__") \
macro(defineProperty, defineProperty, "defineProperty") \
macro(defineSetter, defineSetter, "__defineSetter__") \
macro(delete, delete_, "delete") \
macro(deleteProperty, deleteProperty, "deleteProperty") \
macro(displayURL, displayURL, "displayURL") \
+ macro(do, do_, "do") \
macro(done, done, "done") \
macro(dotGenerator, dotGenerator, ".generator") \
macro(dotThis, dotThis, ".this") \
macro(each, each, "each") \
macro(elementType, elementType, "elementType") \
+ macro(else, else_, "else") \
macro(empty, empty, "") \
macro(emptyRegExp, emptyRegExp, "(?:)") \
macro(encodeURI, encodeURI, "encodeURI") \
macro(encodeURIComponent, encodeURIComponent, "encodeURIComponent") \
macro(endTimestamp, endTimestamp, "endTimestamp") \
macro(entries, entries, "entries") \
+ macro(enum, enum_, "enum") \
macro(enumerable, enumerable, "enumerable") \
macro(enumerate, enumerate, "enumerate") \
macro(era, era, "era") \
@@ -105,20 +116,26 @@
macro(escape, escape, "escape") \
macro(eval, eval, "eval") \
macro(exec, exec, "exec") \
+ macro(export, export_, "export") \
+ macro(extends, extends, "extends") \
macro(false, false_, "false") \
macro(fieldOffsets, fieldOffsets, "fieldOffsets") \
macro(fieldTypes, fieldTypes, "fieldTypes") \
macro(fileName, fileName, "fileName") \
macro(fill, fill, "fill") \
+ macro(finally, finally_, "finally") \
macro(find, find, "find") \
macro(findIndex, findIndex, "findIndex") \
macro(firstDayOfWeek, firstDayOfWeek, "firstDayOfWeek") \
macro(fix, fix, "fix") \
macro(flags, flags, "flags") \
+ macro(flat, flat, "flat") \
+ macro(flatMap, flatMap, "flatMap") \
macro(float32, float32, "float32") \
macro(Float32x4, Float32x4, "Float32x4") \
macro(float64, float64, "float64") \
macro(Float64x2, Float64x2, "Float64x2") \
+ macro(for, for_, "for") \
macro(forceInterpreter, forceInterpreter, "forceInterpreter") \
macro(forEach, forEach, "forEach") \
macro(format, format, "format") \
@@ -144,8 +161,12 @@
macro(hasOwn, hasOwn, "hasOwn") \
macro(hasOwnProperty, hasOwnProperty, "hasOwnProperty") \
macro(hour, hour, "hour") \
+ macro(if, if_, "if") \
macro(ignoreCase, ignoreCase, "ignoreCase") \
macro(ignorePunctuation, ignorePunctuation, "ignorePunctuation") \
+ macro(implements, implements, "implements") \
+ macro(import, import, "import") \
+ macro(in, in, "in") \
macro(includes, includes, "includes") \
macro(incumbentGlobal, incumbentGlobal, "incumbentGlobal") \
macro(index, index, "index") \
@@ -156,12 +177,14 @@
macro(innermost, innermost, "innermost") \
macro(inNursery, inNursery, "inNursery") \
macro(input, input, "input") \
+ macro(instanceof, instanceof, "instanceof") \
macro(int8, int8, "int8") \
macro(int16, int16, "int16") \
macro(int32, int32, "int32") \
macro(Int8x16, Int8x16, "Int8x16") \
macro(Int16x8, Int16x8, "Int16x8") \
macro(Int32x4, Int32x4, "Int32x4") \
+ macro(interface, interface, "interface") \
macro(InterpretGeneratorResume, InterpretGeneratorResume, "InterpretGeneratorResume") \
macro(isEntryPoint, isEntryPoint, "isEntryPoint") \
macro(isExtensible, isExtensible, "isExtensible") \
@@ -215,6 +238,7 @@
macro(noFilename, noFilename, "noFilename") \
macro(nonincrementalReason, nonincrementalReason, "nonincrementalReason") \
macro(noStack, noStack, "noStack") \
+ macro(notes, notes, "notes") \
macro(NumberFormat, NumberFormat, "NumberFormat") \
macro(NumberFormatFormatGet, NumberFormatFormatGet, "Intl_NumberFormat_format_get") \
macro(numeric, numeric, "numeric") \
@@ -236,13 +260,18 @@
macro(other, other, "other") \
macro(outOfMemory, outOfMemory, "out of memory") \
macro(ownKeys, ownKeys, "ownKeys") \
+ macro(Object_valueOf, Object_valueOf, "Object_valueOf") \
+ macro(package, package, "package") \
macro(parseFloat, parseFloat, "parseFloat") \
macro(parseInt, parseInt, "parseInt") \
macro(pattern, pattern, "pattern") \
macro(pending, pending, "pending") \
+ macro(public, public_, "public") \
macro(preventExtensions, preventExtensions, "preventExtensions") \
+ macro(private, private_, "private") \
macro(promise, promise, "promise") \
macro(propertyIsEnumerable, propertyIsEnumerable, "propertyIsEnumerable") \
+ macro(protected, protected_, "protected") \
macro(proto, proto, "__proto__") \
macro(prototype, prototype, "prototype") \
macro(proxy, proxy, "proxy") \
@@ -291,10 +320,12 @@
macro(StructType, StructType, "StructType") \
macro(style, style, "style") \
macro(super, super, "super") \
+ macro(switch, switch_, "switch") \
macro(Symbol_iterator_fun, Symbol_iterator_fun, "[Symbol.iterator]") \
macro(target, target, "target") \
macro(test, test, "test") \
macro(then, then, "then") \
+ macro(this, this_, "this") \
macro(throw, throw_, "throw") \
macro(timestamp, timestamp, "timestamp") \
macro(timeZone, timeZone, "timeZone") \
@@ -307,7 +338,9 @@
macro(toString, toString, "toString") \
macro(toUTCString, toUTCString, "toUTCString") \
macro(true, true_, "true") \
+ macro(try, try_, "try") \
macro(type, type, "type") \
+ macro(typeof, typeof_, "typeof") \
macro(uint8, uint8, "uint8") \
macro(uint8Clamped, uint8Clamped, "uint8Clamped") \
macro(uint16, uint16, "uint16") \
@@ -327,6 +360,7 @@
macro(useAsm, useAsm, "use asm") \
macro(useGrouping, useGrouping, "useGrouping") \
macro(useStrict, useStrict, "use strict") \
+ macro(void, void_, "void") \
macro(value, value, "value") \
macro(valueOf, valueOf, "valueOf") \
macro(values, values, "values") \
@@ -341,6 +375,8 @@
macro(weekday, weekday, "weekday") \
macro(weekendEnd, weekendEnd, "weekendEnd") \
macro(weekendStart, weekendStart, "weekendStart") \
+ macro(while, while_, "while") \
+ macro(with, with, "with") \
macro(writable, writable, "writable") \
macro(year, year, "year") \
macro(yield, yield, "yield") \
diff --git a/js/src/vm/Debugger.cpp b/js/src/vm/Debugger.cpp
index d16781326..d68d1b75e 100644
--- a/js/src/vm/Debugger.cpp
+++ b/js/src/vm/Debugger.cpp
@@ -224,7 +224,7 @@ EnsureFunctionHasScript(JSContext* cx, HandleFunction fun)
{
if (fun->isInterpretedLazy()) {
AutoCompartment ac(cx, fun);
- return !!fun->getOrCreateScript(cx);
+ return !!JSFunction::getOrCreateScript(cx, fun);
}
return true;
}
@@ -2234,7 +2234,7 @@ Debugger::appendAllocationSite(JSContext* cx, HandleObject obj, HandleSavedFrame
RootedAtom ctorName(cx);
{
AutoCompartment ac(cx, obj);
- if (!obj->constructorDisplayAtom(cx, &ctorName))
+ if (!JSObject::constructorDisplayAtom(cx, obj, &ctorName))
return false;
}
@@ -7227,8 +7227,8 @@ static const JSFunctionSpec DebuggerSource_methods[] = {
/* static */ NativeObject*
DebuggerFrame::initClass(JSContext* cx, HandleObject dbgCtor, HandleObject obj)
{
- Rooted<GlobalObject*> global(cx, &obj->as<GlobalObject>());
- RootedObject objProto(cx, global->getOrCreateObjectPrototype(cx));
+ Handle<GlobalObject*> global = obj.as<GlobalObject>();
+ RootedObject objProto(cx, GlobalObject::getOrCreateObjectPrototype(cx, global));
return InitClass(cx, dbgCtor, objProto, &class_, construct, 0, properties_,
methods_, nullptr, nullptr);
@@ -8666,6 +8666,14 @@ DebuggerObject::errorMessageNameGetter(JSContext *cx, unsigned argc, Value* vp)
}
/* static */ bool
+DebuggerObject::errorNotesGetter(JSContext *cx, unsigned argc, Value* vp)
+{
+ THIS_DEBUGOBJECT(cx, argc, vp, "get errorNotes", args, object)
+
+ return DebuggerObject::getErrorNotes(cx, object, args.rval());
+}
+
+/* static */ bool
DebuggerObject::errorLineNumberGetter(JSContext *cx, unsigned argc, Value* vp)
{
THIS_DEBUGOBJECT(cx, argc, vp, "get errorLineNumber", args, object)
@@ -9324,6 +9332,7 @@ const JSPropertySpec DebuggerObject::properties_[] = {
JS_PSG("global", DebuggerObject::globalGetter, 0),
JS_PSG("allocationSite", DebuggerObject::allocationSiteGetter, 0),
JS_PSG("errorMessageName", DebuggerObject::errorMessageNameGetter, 0),
+ JS_PSG("errorNotes", DebuggerObject::errorNotesGetter, 0),
JS_PSG("errorLineNumber", DebuggerObject::errorLineNumberGetter, 0),
JS_PSG("errorColumnNumber", DebuggerObject::errorColumnNumberGetter, 0),
JS_PSG("isProxy", DebuggerObject::isProxyGetter, 0),
@@ -9376,8 +9385,8 @@ const JSFunctionSpec DebuggerObject::methods_[] = {
/* static */ NativeObject*
DebuggerObject::initClass(JSContext* cx, HandleObject obj, HandleObject debugCtor)
{
- Rooted<GlobalObject*> global(cx, &obj->as<GlobalObject>());
- RootedObject objProto(cx, global->getOrCreateObjectPrototype(cx));
+ Handle<GlobalObject*> global = obj.as<GlobalObject>();
+ RootedObject objProto(cx, GlobalObject::getOrCreateObjectPrototype(cx, global));
RootedNativeObject objectProto(cx, InitClass(cx, debugCtor, objProto, &class_,
construct, 0, properties_,
@@ -9611,7 +9620,7 @@ DebuggerObject::getBoundArguments(JSContext* cx, HandleDebuggerObject object,
if (!result.resize(length))
return false;
for (size_t i = 0; i < length; i++) {
- result[i].set(referent->getBoundFunctionArgument(cx, i));
+ result[i].set(referent->getBoundFunctionArgument(i));
if (!dbg->wrapDebuggeeValue(cx, result[i]))
return false;
}
@@ -9695,6 +9704,30 @@ DebuggerObject::getErrorMessageName(JSContext* cx, HandleDebuggerObject object,
}
/* static */ bool
+DebuggerObject::getErrorNotes(JSContext* cx, HandleDebuggerObject object,
+ MutableHandleValue result)
+{
+ RootedObject referent(cx, object->referent());
+ JSErrorReport* report;
+ if (!getErrorReport(cx, referent, report))
+ return false;
+
+ if (!report) {
+ result.setUndefined();
+ return true;
+ }
+
+ RootedObject errorNotesArray(cx, CreateErrorNotesArray(cx, report));
+ if (!errorNotesArray)
+ return false;
+
+ if (!cx->compartment()->wrap(cx, &errorNotesArray))
+ return false;
+ result.setObject(*errorNotesArray);
+ return true;
+}
+
+/* static */ bool
DebuggerObject::getErrorLineNumber(JSContext* cx, HandleDebuggerObject object,
MutableHandleValue result)
{
@@ -10577,8 +10610,8 @@ const JSFunctionSpec DebuggerEnvironment::methods_[] = {
/* static */ NativeObject*
DebuggerEnvironment::initClass(JSContext* cx, HandleObject dbgCtor, HandleObject obj)
{
- Rooted<GlobalObject*> global(cx, &obj->as<GlobalObject>());
- RootedObject objProto(cx, global->getOrCreateObjectPrototype(cx));
+ Handle<GlobalObject*> global = obj.as<GlobalObject>();
+ RootedObject objProto(cx, GlobalObject::getOrCreateObjectPrototype(cx, global));
return InitClass(cx, dbgCtor, objProto, &DebuggerEnvironment::class_, construct, 0,
properties_, methods_, nullptr, nullptr);
@@ -10774,7 +10807,8 @@ DebuggerEnvironment::getVariable(JSContext* cx, HandleDebuggerEnvironment enviro
//
// See wrapDebuggeeValue for how the sentinel values are wrapped.
if (referent->is<DebugEnvironmentProxy>()) {
- if (!referent->as<DebugEnvironmentProxy>().getMaybeSentinelValue(cx, id, result))
+ Rooted<DebugEnvironmentProxy*> env(cx, &referent->as<DebugEnvironmentProxy>());
+ if (!DebugEnvironmentProxy::getMaybeSentinelValue(cx, env, id, result))
return false;
} else {
if (!GetProperty(cx, referent, referent, id, result))
@@ -10942,9 +10976,9 @@ JS_DefineDebuggerObject(JSContext* cx, HandleObject obj)
memoryProto(cx);
RootedObject debuggeeWouldRunProto(cx);
RootedValue debuggeeWouldRunCtor(cx);
- Rooted<GlobalObject*> global(cx, &obj->as<GlobalObject>());
+ Handle<GlobalObject*> global = obj.as<GlobalObject>();
- objProto = global->getOrCreateObjectPrototype(cx);
+ objProto = GlobalObject::getOrCreateObjectPrototype(cx, global);
if (!objProto)
return false;
debugProto = InitClass(cx, obj,
diff --git a/js/src/vm/Debugger.h b/js/src/vm/Debugger.h
index 3239ade6d..cdcf2d67f 100644
--- a/js/src/vm/Debugger.h
+++ b/js/src/vm/Debugger.h
@@ -1246,6 +1246,8 @@ class DebuggerObject : public NativeObject
MutableHandleObject result);
static MOZ_MUST_USE bool getErrorMessageName(JSContext* cx, HandleDebuggerObject object,
MutableHandleString result);
+ static MOZ_MUST_USE bool getErrorNotes(JSContext* cx, HandleDebuggerObject object,
+ MutableHandleValue result);
static MOZ_MUST_USE bool getErrorLineNumber(JSContext* cx, HandleDebuggerObject object,
MutableHandleValue result);
static MOZ_MUST_USE bool getErrorColumnNumber(JSContext* cx, HandleDebuggerObject object,
@@ -1371,6 +1373,7 @@ class DebuggerObject : public NativeObject
static MOZ_MUST_USE bool globalGetter(JSContext* cx, unsigned argc, Value* vp);
static MOZ_MUST_USE bool allocationSiteGetter(JSContext* cx, unsigned argc, Value* vp);
static MOZ_MUST_USE bool errorMessageNameGetter(JSContext* cx, unsigned argc, Value* vp);
+ static MOZ_MUST_USE bool errorNotesGetter(JSContext* cx, unsigned argc, Value* vp);
static MOZ_MUST_USE bool errorLineNumberGetter(JSContext* cx, unsigned argc, Value* vp);
static MOZ_MUST_USE bool errorColumnNumberGetter(JSContext* cx, unsigned argc, Value* vp);
static MOZ_MUST_USE bool isProxyGetter(JSContext* cx, unsigned argc, Value* vp);
diff --git a/js/src/vm/EnvironmentObject.cpp b/js/src/vm/EnvironmentObject.cpp
index 9b20c2b9c..c95bb0597 100644
--- a/js/src/vm/EnvironmentObject.cpp
+++ b/js/src/vm/EnvironmentObject.cpp
@@ -408,7 +408,6 @@ const ObjectOps ModuleEnvironmentObject::objectOps_ = {
ModuleEnvironmentObject::setProperty,
ModuleEnvironmentObject::getOwnPropertyDescriptor,
ModuleEnvironmentObject::deleteProperty,
- nullptr, nullptr, /* watch/unwatch */
nullptr, /* getElements */
ModuleEnvironmentObject::enumerate,
nullptr
@@ -790,7 +789,6 @@ static const ObjectOps WithEnvironmentObjectOps = {
with_SetProperty,
with_GetOwnPropertyDescriptor,
with_DeleteProperty,
- nullptr, nullptr, /* watch/unwatch */
nullptr, /* getElements */
nullptr, /* enumerate (native enumeration of target doesn't work) */
nullptr,
@@ -816,7 +814,7 @@ NonSyntacticVariablesObject::create(JSContext* cx)
return nullptr;
MOZ_ASSERT(obj->isUnqualifiedVarObj());
- if (!obj->setQualifiedVarObj(cx))
+ if (!JSObject::setQualifiedVarObj(cx, obj))
return nullptr;
obj->initEnclosingEnvironment(&cx->global()->lexicalEnvironment());
@@ -957,7 +955,7 @@ LexicalEnvironmentObject::createHollowForDebug(JSContext* cx, Handle<LexicalScop
return nullptr;
}
- if (!env->setFlags(cx, BaseShape::NOT_EXTENSIBLE, JSObject::GENERATE_SHAPE))
+ if (!JSObject::setFlags(cx, env, BaseShape::NOT_EXTENSIBLE, JSObject::GENERATE_SHAPE))
return nullptr;
env->initScopeUnchecked(scope);
@@ -1159,7 +1157,6 @@ static const ObjectOps RuntimeLexicalErrorObjectObjectOps = {
lexicalError_SetProperty,
lexicalError_GetOwnPropertyDescriptor,
lexicalError_DeleteProperty,
- nullptr, nullptr, /* watch/unwatch */
nullptr, /* getElements */
nullptr, /* enumerate (native enumeration of target doesn't work) */
nullptr, /* this */
@@ -1425,7 +1422,8 @@ class DebugEnvironmentProxyHandler : public BaseProxyHandler
/* Handle unaliased formals, vars, lets, and consts at function scope. */
if (env->is<CallObject>()) {
CallObject& callobj = env->as<CallObject>();
- RootedScript script(cx, callobj.callee().getOrCreateScript(cx));
+ RootedFunction fun(cx, &callobj.callee());
+ RootedScript script(cx, JSFunction::getOrCreateScript(cx, fun));
if (!script->ensureHasTypes(cx) || !script->ensureHasAnalyzedArgsUsage(cx))
return false;
@@ -2233,11 +2231,11 @@ DebugEnvironmentProxy::isForDeclarative() const
e.is<LexicalEnvironmentObject>();
}
-bool
-DebugEnvironmentProxy::getMaybeSentinelValue(JSContext* cx, HandleId id, MutableHandleValue vp)
+/* static */ bool
+DebugEnvironmentProxy::getMaybeSentinelValue(JSContext* cx, Handle<DebugEnvironmentProxy*> env,
+ HandleId id, MutableHandleValue vp)
{
- Rooted<DebugEnvironmentProxy*> self(cx, this);
- return DebugEnvironmentProxyHandler::singleton.getMaybeSentinelValue(cx, self, id, vp);
+ return DebugEnvironmentProxyHandler::singleton.getMaybeSentinelValue(cx, env, id, vp);
}
bool
@@ -2960,7 +2958,7 @@ js::GetDebugEnvironmentForFunction(JSContext* cx, HandleFunction fun)
MOZ_ASSERT(CanUseDebugEnvironmentMaps(cx));
if (!DebugEnvironments::updateLiveEnvironments(cx))
return nullptr;
- JSScript* script = fun->getOrCreateScript(cx);
+ JSScript* script = JSFunction::getOrCreateScript(cx, fun);
if (!script)
return nullptr;
EnvironmentIter ei(cx, fun->environment(), script->enclosingScope());
@@ -3468,11 +3466,13 @@ RemoveReferencedNames(JSContext* cx, HandleScript script, PropertyNameSet& remai
if (script->hasObjects()) {
ObjectArray* objects = script->objects();
+ RootedFunction fun(cx);
+ RootedScript innerScript(cx);
for (size_t i = 0; i < objects->length; i++) {
JSObject* obj = objects->vector[i];
if (obj->is<JSFunction>() && obj->as<JSFunction>().isInterpreted()) {
- JSFunction* fun = &obj->as<JSFunction>();
- RootedScript innerScript(cx, fun->getOrCreateScript(cx));
+ fun = &obj->as<JSFunction>();
+ innerScript = JSFunction::getOrCreateScript(cx, fun);
if (!innerScript)
return false;
@@ -3535,11 +3535,13 @@ AnalyzeEntrainedVariablesInScript(JSContext* cx, HandleScript script, HandleScri
if (innerScript->hasObjects()) {
ObjectArray* objects = innerScript->objects();
+ RootedFunction fun(cx);
+ RootedScript innerInnerScript(cx);
for (size_t i = 0; i < objects->length; i++) {
JSObject* obj = objects->vector[i];
if (obj->is<JSFunction>() && obj->as<JSFunction>().isInterpreted()) {
- JSFunction* fun = &obj->as<JSFunction>();
- RootedScript innerInnerScript(cx, fun->getOrCreateScript(cx));
+ fun = &obj->as<JSFunction>();
+ innerInnerScript = JSFunction::getOrCreateScript(cx, fun);
if (!innerInnerScript ||
!AnalyzeEntrainedVariablesInScript(cx, script, innerInnerScript))
{
@@ -3570,11 +3572,13 @@ js::AnalyzeEntrainedVariables(JSContext* cx, HandleScript script)
return true;
ObjectArray* objects = script->objects();
+ RootedFunction fun(cx);
+ RootedScript innerScript(cx);
for (size_t i = 0; i < objects->length; i++) {
JSObject* obj = objects->vector[i];
if (obj->is<JSFunction>() && obj->as<JSFunction>().isInterpreted()) {
- JSFunction* fun = &obj->as<JSFunction>();
- RootedScript innerScript(cx, fun->getOrCreateScript(cx));
+ fun = &obj->as<JSFunction>();
+ innerScript = JSFunction::getOrCreateScript(cx, fun);
if (!innerScript)
return false;
diff --git a/js/src/vm/EnvironmentObject.h b/js/src/vm/EnvironmentObject.h
index 032286116..c527cd1b0 100644
--- a/js/src/vm/EnvironmentObject.h
+++ b/js/src/vm/EnvironmentObject.h
@@ -872,7 +872,8 @@ class DebugEnvironmentProxy : public ProxyObject
// Get a property by 'id', but returns sentinel values instead of throwing
// on exceptional cases.
- bool getMaybeSentinelValue(JSContext* cx, HandleId id, MutableHandleValue vp);
+ static bool getMaybeSentinelValue(JSContext* cx, Handle<DebugEnvironmentProxy*> env,
+ HandleId id, MutableHandleValue vp);
// Returns true iff this is a function environment with its own this-binding
// (all functions except arrow functions and generator expression lambdas).
diff --git a/js/src/vm/ErrorObject.cpp b/js/src/vm/ErrorObject.cpp
index d8d29830b..271132801 100644
--- a/js/src/vm/ErrorObject.cpp
+++ b/js/src/vm/ErrorObject.cpp
@@ -29,11 +29,11 @@ js::ErrorObject::assignInitialShape(ExclusiveContext* cx, Handle<ErrorObject*> o
{
MOZ_ASSERT(obj->empty());
- if (!obj->addDataProperty(cx, cx->names().fileName, FILENAME_SLOT, 0))
+ if (!NativeObject::addDataProperty(cx, obj, cx->names().fileName, FILENAME_SLOT, 0))
return nullptr;
- if (!obj->addDataProperty(cx, cx->names().lineNumber, LINENUMBER_SLOT, 0))
+ if (!NativeObject::addDataProperty(cx, obj, cx->names().lineNumber, LINENUMBER_SLOT, 0))
return nullptr;
- return obj->addDataProperty(cx, cx->names().columnNumber, COLUMNNUMBER_SLOT, 0);
+ return NativeObject::addDataProperty(cx, obj, cx->names().columnNumber, COLUMNNUMBER_SLOT, 0);
}
/* static */ bool
@@ -57,7 +57,7 @@ js::ErrorObject::init(JSContext* cx, Handle<ErrorObject*> obj, JSExnType type,
// |new Error()|.
RootedShape messageShape(cx);
if (message) {
- messageShape = obj->addDataProperty(cx, cx->names().message, MESSAGE_SLOT, 0);
+ messageShape = NativeObject::addDataProperty(cx, obj, cx->names().message, MESSAGE_SLOT, 0);
if (!messageShape)
return false;
MOZ_ASSERT(messageShape->slot() == MESSAGE_SLOT);
diff --git a/js/src/vm/ErrorReporting.cpp b/js/src/vm/ErrorReporting.cpp
new file mode 100644
index 000000000..5877f3a4b
--- /dev/null
+++ b/js/src/vm/ErrorReporting.cpp
@@ -0,0 +1,124 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "vm/ErrorReporting.h"
+
+#include "mozilla/Move.h"
+
+#include <stdarg.h>
+
+#include "jscntxt.h"
+#include "jsexn.h"
+
+using mozilla::Move;
+
+using JS::UniqueTwoByteChars;
+
+void
+CallWarningReporter(JSContext* cx, JSErrorReport* reportp)
+{
+ MOZ_ASSERT(reportp);
+ MOZ_ASSERT(JSREPORT_IS_WARNING(reportp->flags));
+
+ if (JS::WarningReporter warningReporter = cx->runtime()->warningReporter)
+ warningReporter(cx, reportp);
+}
+
+void
+CompileError::throwError(JSContext* cx)
+{
+ if (JSREPORT_IS_WARNING(flags)) {
+ CallWarningReporter(cx, this);
+ return;
+ }
+
+ // If there's a runtime exception type associated with this error
+ // number, set that as the pending exception. For errors occuring at
+ // compile time, this is very likely to be a JSEXN_SYNTAXERR.
+ //
+ // If an exception is thrown but not caught, the JSREPORT_EXCEPTION
+ // flag will be set in report.flags. Proper behavior for an error
+ // reporter is to ignore a report with this flag for all but top-level
+ // compilation errors. The exception will remain pending, and so long
+ // as the non-top-level "load", "eval", or "compile" native function
+ // returns false, the top-level reporter will eventually receive the
+ // uncaught exception report.
+ ErrorToException(cx, this, nullptr, nullptr);
+}
+
+bool
+ReportCompileWarning(JSContext* cx, ErrorMetadata&& metadata, UniquePtr<JSErrorNotes> notes,
+ unsigned flags, unsigned errorNumber, va_list args)
+{
+ // On the main thread, report the error immediately. When compiling off
+ // thread, save the error so that the thread finishing the parse can report
+ // it later.
+ CompileError tempErr;
+ CompileError* err = &tempErr;
+ if (!cx->isJSContext() && !cx->addPendingCompileError(&err)) {
+ return false;
+ }
+
+ err->notes = Move(notes);
+ err->flags = flags;
+ err->errorNumber = errorNumber;
+
+ err->filename = metadata.filename;
+ err->lineno = metadata.lineNumber;
+ err->column = metadata.columnNumber;
+ err->isMuted = metadata.isMuted;
+
+ if (UniqueTwoByteChars lineOfContext = Move(metadata.lineOfContext))
+ err->initOwnedLinebuf(lineOfContext.release(), metadata.lineLength, metadata.tokenOffset);
+
+ if (!ExpandErrorArgumentsVA(cx, GetErrorMessage, nullptr, errorNumber,
+ nullptr, ArgumentsAreLatin1, err, args))
+ {
+ return false;
+ }
+
+ if (cx->isJSContext()) {
+ err->throwError(cx->asJSContext());
+ }
+
+ return true;
+}
+
+void
+ReportCompileError(JSContext* cx, ErrorMetadata&& metadata, UniquePtr<JSErrorNotes> notes,
+ unsigned flags, unsigned errorNumber, va_list args)
+{
+ // On the main thread, report the error immediately. When compiling off
+ // thread, save the error so that the thread finishing the parse can report
+ // it later.
+ CompileError tempErr;
+ CompileError* err = &tempErr;
+ if (!cx->isJSContext() && !cx->addPendingCompileError(&err)) {
+ return;
+ }
+
+ err->notes = Move(notes);
+ err->flags = flags;
+ err->errorNumber = errorNumber;
+
+ err->filename = metadata.filename;
+ err->lineno = metadata.lineNumber;
+ err->column = metadata.columnNumber;
+ err->isMuted = metadata.isMuted;
+
+ if (UniqueTwoByteChars lineOfContext = Move(metadata.lineOfContext))
+ err->initOwnedLinebuf(lineOfContext.release(), metadata.lineLength, metadata.tokenOffset);
+
+ if (!ExpandErrorArgumentsVA(cx, GetErrorMessage, nullptr, errorNumber,
+ nullptr, ArgumentsAreLatin1, err, args))
+ {
+ return;
+ }
+
+ if (cx->isJSContext()) {
+ err->throwError(cx->asJSContext());
+ }
+}
diff --git a/js/src/vm/ErrorReporting.h b/js/src/vm/ErrorReporting.h
new file mode 100644
index 000000000..02bbe2c63
--- /dev/null
+++ b/js/src/vm/ErrorReporting.h
@@ -0,0 +1,91 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef vm_ErrorReporting_h
+#define vm_ErrorReporting_h
+
+#include "mozilla/Move.h"
+
+#include <stdarg.h>
+
+#include "jsapi.h" // for JSErrorNotes, JSErrorReport
+
+#include "js/UniquePtr.h" // for UniquePtr
+#include "js/Utility.h" // for UniqueTwoByteChars
+
+struct JSContext;
+
+namespace js {
+
+/**
+ * Metadata for a compilation error (or warning) at a particular offset, or at
+ * no offset (i.e. with respect to a script overall).
+ */
+struct ErrorMetadata
+{
+ // The file/URL where the error occurred.
+ const char* filename;
+
+ // The line and column numbers where the error occurred. If the error
+ // is with respect to the entire script and not with respect to a
+ // particular location, these will both be zero.
+ uint32_t lineNumber;
+ uint32_t columnNumber;
+
+ // If the error occurs at a particular location, context surrounding the
+ // location of the error: the line that contained the error, or a small
+ // portion of it if the line is long.
+ //
+ // This information is provided on a best-effort basis: code populating
+ // ErrorMetadata instances isn't obligated to supply this.
+ JS::UniqueTwoByteChars lineOfContext;
+
+ // If |lineOfContext| is non-null, its length.
+ size_t lineLength;
+
+ // If |lineOfContext| is non-null, the offset within it of the token that
+ // triggered the error.
+ size_t tokenOffset;
+
+ // Whether the error is "muted" because it derives from a cross-origin
+ // load. See the comment in TransitiveCompileOptions in jsapi.h for
+ // details.
+ bool isMuted;
+};
+
+class CompileError : public JSErrorReport
+{
+ public:
+ void throwError(JSContext* cx);
+};
+
+/** Send a JSErrorReport to the warningReporter callback. */
+extern void
+CallWarningReporter(JSContext* cx, JSErrorReport* report);
+
+/**
+ * Report a compile error during script processing prior to execution of the
+ * script.
+ */
+extern void
+ReportCompileError(ErrorMetadata&& metadata, UniquePtr<JSErrorNotes> notes,
+ unsigned flags, unsigned errorNumber, va_list args);
+
+/**
+ * Report a compile warning during script processing prior to execution of the
+ * script. Returns true if the warning was successfully reported, false if an
+ * error occurred.
+ *
+ * This function DOES NOT respect an existing werror option. If the caller
+ * wishes such option to be respected, it must do so itself.
+ */
+extern MOZ_MUST_USE bool
+ReportCompileWarning(JSContext* cx, ErrorMetadata&& metadata, UniquePtr<JSErrorNotes> notes,
+ unsigned flags, unsigned errorNumber, va_list args);
+
+} // namespace js
+
+#endif /* vm_ErrorReporting_h */
diff --git a/js/src/vm/GeneratorObject.cpp b/js/src/vm/GeneratorObject.cpp
index 690c0bf48..ba28501e6 100644
--- a/js/src/vm/GeneratorObject.cpp
+++ b/js/src/vm/GeneratorObject.cpp
@@ -256,7 +256,7 @@ static const JSFunctionSpec legacy_generator_methods[] = {
static JSObject*
NewSingletonObjectWithObjectPrototype(JSContext* cx, Handle<GlobalObject*> global)
{
- RootedObject proto(cx, global->getOrCreateObjectPrototype(cx));
+ RootedObject proto(cx, GlobalObject::getOrCreateObjectPrototype(cx, global));
if (!proto)
return nullptr;
return NewObjectWithGivenProto<PlainObject>(cx, proto, SingletonObject);
@@ -265,7 +265,7 @@ NewSingletonObjectWithObjectPrototype(JSContext* cx, Handle<GlobalObject*> globa
JSObject*
js::NewSingletonObjectWithFunctionPrototype(JSContext* cx, Handle<GlobalObject*> global)
{
- RootedObject proto(cx, global->getOrCreateFunctionPrototype(cx));
+ RootedObject proto(cx, GlobalObject::getOrCreateFunctionPrototype(cx, global));
if (!proto)
return nullptr;
return NewObjectWithGivenProto<PlainObject>(cx, proto, SingletonObject);
@@ -278,7 +278,7 @@ GlobalObject::initLegacyGeneratorProto(JSContext* cx, Handle<GlobalObject*> glob
return true;
RootedObject proto(cx, NewSingletonObjectWithObjectPrototype(cx, global));
- if (!proto || !proto->setDelegate(cx))
+ if (!proto || !JSObject::setDelegate(cx, proto))
return false;
if (!DefinePropertiesAndFunctions(cx, proto, nullptr, legacy_generator_methods))
return false;
@@ -297,9 +297,9 @@ GlobalObject::initStarGenerators(JSContext* cx, Handle<GlobalObject*> global)
if (!iteratorProto)
return false;
- RootedObject genObjectProto(cx, global->createBlankPrototypeInheriting(cx,
- &PlainObject::class_,
- iteratorProto));
+ RootedObject genObjectProto(cx, GlobalObject::createBlankPrototypeInheriting(cx, global,
+ &PlainObject::class_,
+ iteratorProto));
if (!genObjectProto)
return false;
if (!DefinePropertiesAndFunctions(cx, genObjectProto, nullptr, star_generator_methods) ||
@@ -309,7 +309,7 @@ GlobalObject::initStarGenerators(JSContext* cx, Handle<GlobalObject*> global)
}
RootedObject genFunctionProto(cx, NewSingletonObjectWithFunctionPrototype(cx, global));
- if (!genFunctionProto || !genFunctionProto->setDelegate(cx))
+ if (!genFunctionProto || !JSObject::setDelegate(cx, genFunctionProto))
return false;
if (!LinkConstructorAndPrototype(cx, genFunctionProto, genObjectProto) ||
!DefineToStringTag(cx, genFunctionProto, cx->names().GeneratorFunction))
diff --git a/js/src/vm/GlobalObject.cpp b/js/src/vm/GlobalObject.cpp
index c90b6b85f..85707e1c6 100644
--- a/js/src/vm/GlobalObject.cpp
+++ b/js/src/vm/GlobalObject.cpp
@@ -329,15 +329,15 @@ GlobalObject::createInternal(JSContext* cx, const Class* clasp)
cx->compartment()->initGlobal(*global);
- if (!global->setQualifiedVarObj(cx))
+ if (!JSObject::setQualifiedVarObj(cx, global))
return nullptr;
- if (!global->setDelegate(cx))
+ if (!JSObject::setDelegate(cx, global))
return nullptr;
return global;
}
-GlobalObject*
+/* static */ GlobalObject*
GlobalObject::new_(JSContext* cx, const Class* clasp, JSPrincipals* principals,
JS::OnNewGlobalHookOption hookOption,
const JS::CompartmentOptions& options)
@@ -398,7 +398,7 @@ GlobalObject::emptyGlobalScope() const
GlobalObject::getOrCreateEval(JSContext* cx, Handle<GlobalObject*> global,
MutableHandleObject eval)
{
- if (!global->getOrCreateObjectPrototype(cx))
+ if (!getOrCreateObjectPrototype(cx, global))
return false;
eval.set(&global->getSlot(EVAL).toObject());
return true;
@@ -573,7 +573,7 @@ GlobalObject::warnOnceAbout(JSContext* cx, HandleObject obj, WarnOnceFlag flag,
return true;
}
-JSFunction*
+/* static */ JSFunction*
GlobalObject::createConstructor(JSContext* cx, Native ctor, JSAtom* nameArg, unsigned length,
gc::AllocKind kind, const JSJitInfo* jitInfo)
{
@@ -595,28 +595,27 @@ CreateBlankProto(JSContext* cx, const Class* clasp, HandleObject proto, HandleOb
RootedNativeObject blankProto(cx, NewNativeObjectWithGivenProto(cx, clasp, proto,
SingletonObject));
- if (!blankProto || !blankProto->setDelegate(cx))
+ if (!blankProto || !JSObject::setDelegate(cx, blankProto))
return nullptr;
return blankProto;
}
-NativeObject*
-GlobalObject::createBlankPrototype(JSContext* cx, const Class* clasp)
+/* static */ NativeObject*
+GlobalObject::createBlankPrototype(JSContext* cx, Handle<GlobalObject*> global, const Class* clasp)
{
- Rooted<GlobalObject*> self(cx, this);
- RootedObject objectProto(cx, getOrCreateObjectPrototype(cx));
+ RootedObject objectProto(cx, getOrCreateObjectPrototype(cx, global));
if (!objectProto)
return nullptr;
- return CreateBlankProto(cx, clasp, objectProto, self);
+ return CreateBlankProto(cx, clasp, objectProto, global);
}
-NativeObject*
-GlobalObject::createBlankPrototypeInheriting(JSContext* cx, const Class* clasp, HandleObject proto)
+/* static */ NativeObject*
+GlobalObject::createBlankPrototypeInheriting(JSContext* cx, Handle<GlobalObject*> global,
+ const Class* clasp, HandleObject proto)
{
- Rooted<GlobalObject*> self(cx, this);
- return CreateBlankProto(cx, clasp, proto, self);
+ return CreateBlankProto(cx, clasp, proto, global);
}
bool
@@ -729,21 +728,20 @@ GlobalObject::hasRegExpStatics() const
return !getSlot(REGEXP_STATICS).isUndefined();
}
-RegExpStatics*
-GlobalObject::getRegExpStatics(ExclusiveContext* cx) const
+/* static */ RegExpStatics*
+GlobalObject::getRegExpStatics(ExclusiveContext* cx, Handle<GlobalObject*> global)
{
MOZ_ASSERT(cx);
- Rooted<GlobalObject*> self(cx, const_cast<GlobalObject*>(this));
RegExpStaticsObject* resObj = nullptr;
- const Value& val = this->getSlot(REGEXP_STATICS);
+ const Value& val = global->getSlot(REGEXP_STATICS);
if (!val.isObject()) {
MOZ_ASSERT(val.isUndefined());
- resObj = RegExpStatics::create(cx, self);
+ resObj = RegExpStatics::create(cx, global);
if (!resObj)
return nullptr;
- self->initSlot(REGEXP_STATICS, ObjectValue(*resObj));
+ global->initSlot(REGEXP_STATICS, ObjectValue(*resObj));
} else {
resObj = &val.toObject().as<RegExpStaticsObject>();
}
@@ -866,7 +864,7 @@ GlobalObject::addIntrinsicValue(JSContext* cx, Handle<GlobalObject*> global,
/* static */ bool
GlobalObject::ensureModulePrototypesCreated(JSContext *cx, Handle<GlobalObject*> global)
{
- return global->getOrCreateObject(cx, MODULE_PROTO, initModuleProto) &&
- global->getOrCreateObject(cx, IMPORT_ENTRY_PROTO, initImportEntryProto) &&
- global->getOrCreateObject(cx, EXPORT_ENTRY_PROTO, initExportEntryProto);
+ return getOrCreateObject(cx, global, MODULE_PROTO, initModuleProto) &&
+ getOrCreateObject(cx, global, IMPORT_ENTRY_PROTO, initImportEntryProto) &&
+ getOrCreateObject(cx, global, EXPORT_ENTRY_PROTO, initExportEntryProto);
}
diff --git a/js/src/vm/GlobalObject.h b/js/src/vm/GlobalObject.h
index 3534ef2f6..5aacfc5dc 100644
--- a/js/src/vm/GlobalObject.h
+++ b/js/src/vm/GlobalObject.h
@@ -290,8 +290,8 @@ class GlobalObject : public NativeObject
* Create a constructor function with the specified name and length using
* ctor, a method which creates objects with the given class.
*/
- JSFunction*
- createConstructor(JSContext* cx, JSNative ctor, JSAtom* name, unsigned length,
+ static JSFunction*
+ createConstructor(JSContext* cx, JSNative ctor, JSAtom* name, unsigned length,
gc::AllocKind kind = gc::AllocKind::FUNCTION,
const JSJitInfo* jitInfo = nullptr);
@@ -303,48 +303,44 @@ class GlobalObject : public NativeObject
* complete the minimal initialization to make the returned object safe to
* touch.
*/
- NativeObject* createBlankPrototype(JSContext* cx, const js::Class* clasp);
+ static NativeObject*
+ createBlankPrototype(JSContext* cx, Handle<GlobalObject*> global, const js::Class* clasp);
/*
* Identical to createBlankPrototype, but uses proto as the [[Prototype]]
* of the returned blank prototype.
*/
- NativeObject* createBlankPrototypeInheriting(JSContext* cx, const js::Class* clasp,
- HandleObject proto);
+ static NativeObject*
+ createBlankPrototypeInheriting(JSContext* cx, Handle<GlobalObject*> global,
+ const js::Class* clasp, HandleObject proto);
template <typename T>
- T* createBlankPrototype(JSContext* cx) {
- NativeObject* res = createBlankPrototype(cx, &T::class_);
+ static T*
+ createBlankPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ NativeObject* res = createBlankPrototype(cx, global, &T::class_);
return res ? &res->template as<T>() : nullptr;
}
- NativeObject* getOrCreateObjectPrototype(JSContext* cx) {
- if (functionObjectClassesInitialized())
- return &getPrototype(JSProto_Object).toObject().as<NativeObject>();
- RootedGlobalObject self(cx, this);
- if (!ensureConstructor(cx, self, JSProto_Object))
+ static NativeObject*
+ getOrCreateObjectPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ if (global->functionObjectClassesInitialized())
+ return &global->getPrototype(JSProto_Object).toObject().as<NativeObject>();
+ if (!ensureConstructor(cx, global, JSProto_Object))
return nullptr;
- return &self->getPrototype(JSProto_Object).toObject().as<NativeObject>();
- }
-
- static NativeObject* getOrCreateObjectPrototype(JSContext* cx, Handle<GlobalObject*> global) {
- return global->getOrCreateObjectPrototype(cx);
+ return &global->getPrototype(JSProto_Object).toObject().as<NativeObject>();
}
- NativeObject* getOrCreateFunctionPrototype(JSContext* cx) {
- if (functionObjectClassesInitialized())
- return &getPrototype(JSProto_Function).toObject().as<NativeObject>();
- RootedGlobalObject self(cx, this);
- if (!ensureConstructor(cx, self, JSProto_Object))
+ static NativeObject*
+ getOrCreateFunctionPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ if (global->functionObjectClassesInitialized())
+ return &global->getPrototype(JSProto_Function).toObject().as<NativeObject>();
+ if (!ensureConstructor(cx, global, JSProto_Object))
return nullptr;
- return &self->getPrototype(JSProto_Function).toObject().as<NativeObject>();
- }
-
- static NativeObject* getOrCreateFunctionPrototype(JSContext* cx, Handle<GlobalObject*> global) {
- return global->getOrCreateFunctionPrototype(cx);
+ return &global->getPrototype(JSProto_Function).toObject().as<NativeObject>();
}
- static NativeObject* getOrCreateArrayPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ static NativeObject*
+ getOrCreateArrayPrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_Array))
return nullptr;
return &global->getPrototype(JSProto_Array).toObject().as<NativeObject>();
@@ -356,37 +352,43 @@ class GlobalObject : public NativeObject
return nullptr;
}
- static NativeObject* getOrCreateBooleanPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ static NativeObject*
+ getOrCreateBooleanPrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_Boolean))
return nullptr;
return &global->getPrototype(JSProto_Boolean).toObject().as<NativeObject>();
}
- static NativeObject* getOrCreateNumberPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ static NativeObject*
+ getOrCreateNumberPrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_Number))
return nullptr;
return &global->getPrototype(JSProto_Number).toObject().as<NativeObject>();
}
- static NativeObject* getOrCreateStringPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ static NativeObject*
+ getOrCreateStringPrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_String))
return nullptr;
return &global->getPrototype(JSProto_String).toObject().as<NativeObject>();
}
- static NativeObject* getOrCreateSymbolPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ static NativeObject*
+ getOrCreateSymbolPrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_Symbol))
return nullptr;
return &global->getPrototype(JSProto_Symbol).toObject().as<NativeObject>();
}
- static NativeObject* getOrCreatePromisePrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ static NativeObject*
+ getOrCreatePromisePrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_Promise))
return nullptr;
return &global->getPrototype(JSProto_Promise).toObject().as<NativeObject>();
}
- static NativeObject* getOrCreateRegExpPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ static NativeObject*
+ getOrCreateRegExpPrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_RegExp))
return nullptr;
return &global->getPrototype(JSProto_RegExp).toObject().as<NativeObject>();
@@ -398,28 +400,30 @@ class GlobalObject : public NativeObject
return nullptr;
}
- static NativeObject* getOrCreateSavedFramePrototype(JSContext* cx,
- Handle<GlobalObject*> global) {
+ static NativeObject*
+ getOrCreateSavedFramePrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_SavedFrame))
return nullptr;
return &global->getPrototype(JSProto_SavedFrame).toObject().as<NativeObject>();
}
- static JSObject* getOrCreateArrayBufferPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ static JSObject*
+ getOrCreateArrayBufferPrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_ArrayBuffer))
return nullptr;
return &global->getPrototype(JSProto_ArrayBuffer).toObject();
}
- JSObject* getOrCreateSharedArrayBufferPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ static JSObject*
+ getOrCreateSharedArrayBufferPrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_SharedArrayBuffer))
return nullptr;
return &global->getPrototype(JSProto_SharedArrayBuffer).toObject();
}
- static JSObject* getOrCreateCustomErrorPrototype(JSContext* cx,
- Handle<GlobalObject*> global,
- JSExnType exnType)
+ static JSObject*
+ getOrCreateCustomErrorPrototype(JSContext* cx, Handle<GlobalObject*> global,
+ JSExnType exnType)
{
JSProtoKey key = GetExceptionProtoKey(exnType);
if (!ensureConstructor(cx, global, key))
@@ -439,35 +443,41 @@ class GlobalObject : public NativeObject
return getOrCreateCustomErrorPrototype(cx, global, JSEXN_ERR);
}
- static NativeObject* getOrCreateSetPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ static NativeObject*
+ getOrCreateSetPrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_Set))
return nullptr;
return &global->getPrototype(JSProto_Set).toObject().as<NativeObject>();
}
- static NativeObject* getOrCreateWeakSetPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ static NativeObject*
+ getOrCreateWeakSetPrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_WeakSet))
return nullptr;
return &global->getPrototype(JSProto_WeakSet).toObject().as<NativeObject>();
}
- JSObject* getOrCreateIntlObject(JSContext* cx) {
- return getOrCreateObject(cx, APPLICATION_SLOTS + JSProto_Intl, initIntlObject);
+ static JSObject*
+ getOrCreateIntlObject(JSContext* cx, Handle<GlobalObject*> global) {
+ return getOrCreateObject(cx, global, APPLICATION_SLOTS + JSProto_Intl, initIntlObject);
}
- JSObject* getOrCreateTypedObjectModule(JSContext* cx) {
- return getOrCreateObject(cx, APPLICATION_SLOTS + JSProto_TypedObject, initTypedObjectModule);
+ static JSObject*
+ getOrCreateTypedObjectModule(JSContext* cx, Handle<GlobalObject*> global) {
+ return getOrCreateObject(cx, global, APPLICATION_SLOTS + JSProto_TypedObject,
+ initTypedObjectModule);
}
- JSObject* getOrCreateSimdGlobalObject(JSContext* cx) {
- return getOrCreateObject(cx, APPLICATION_SLOTS + JSProto_SIMD, initSimdObject);
+ static JSObject*
+ getOrCreateSimdGlobalObject(JSContext* cx, Handle<GlobalObject*> global) {
+ return getOrCreateObject(cx, global, APPLICATION_SLOTS + JSProto_SIMD, initSimdObject);
}
// Get the type descriptor for one of the SIMD types.
// simdType is one of the JS_SIMDTYPEREPR_* constants.
// Implemented in builtin/SIMD.cpp.
- static SimdTypeDescr* getOrCreateSimdTypeDescr(JSContext* cx, Handle<GlobalObject*> global,
- SimdType simdType);
+ static SimdTypeDescr*
+ getOrCreateSimdTypeDescr(JSContext* cx, Handle<GlobalObject*> global, SimdType simdType);
TypedObjectModuleObject& getTypedObjectModule() const;
@@ -475,16 +485,19 @@ class GlobalObject : public NativeObject
return &getPrototype(JSProto_Iterator).toObject();
}
- JSObject* getOrCreateCollatorPrototype(JSContext* cx) {
- return getOrCreateObject(cx, COLLATOR_PROTO, initIntlObject);
+ static JSObject*
+ getOrCreateCollatorPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return getOrCreateObject(cx, global, COLLATOR_PROTO, initIntlObject);
}
- JSObject* getOrCreateNumberFormatPrototype(JSContext* cx) {
- return getOrCreateObject(cx, NUMBER_FORMAT_PROTO, initIntlObject);
+ static JSObject*
+ getOrCreateNumberFormatPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return getOrCreateObject(cx, global, NUMBER_FORMAT_PROTO, initIntlObject);
}
- JSObject* getOrCreateDateTimeFormatPrototype(JSContext* cx) {
- return getOrCreateObject(cx, DATE_TIME_FORMAT_PROTO, initIntlObject);
+ static JSObject*
+ getOrCreateDateTimeFormatPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return getOrCreateObject(cx, global, DATE_TIME_FORMAT_PROTO, initIntlObject);
}
static bool ensureModulePrototypesCreated(JSContext *cx, Handle<GlobalObject*> global);
@@ -539,88 +552,86 @@ class GlobalObject : public NativeObject
private:
typedef bool (*ObjectInitOp)(JSContext* cx, Handle<GlobalObject*> global);
- JSObject* getOrCreateObject(JSContext* cx, unsigned slot, ObjectInitOp init) {
- Value v = getSlotRef(slot);
+ static JSObject*
+ getOrCreateObject(JSContext* cx, Handle<GlobalObject*> global, unsigned slot,
+ ObjectInitOp init)
+ {
+ Value v = global->getSlotRef(slot);
if (v.isObject())
return &v.toObject();
- RootedGlobalObject self(cx, this);
- if (!init(cx, self))
+ if (!init(cx, global))
return nullptr;
- return &self->getSlot(slot).toObject();
+ return &global->getSlot(slot).toObject();
}
public:
- static NativeObject* getOrCreateIteratorPrototype(JSContext* cx, Handle<GlobalObject*> global)
- {
- return MaybeNativeObject(global->getOrCreateObject(cx, ITERATOR_PROTO, initIteratorProto));
+ static NativeObject*
+ getOrCreateIteratorPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return MaybeNativeObject(getOrCreateObject(cx, global, ITERATOR_PROTO, initIteratorProto));
}
- static NativeObject* getOrCreateArrayIteratorPrototype(JSContext* cx, Handle<GlobalObject*> global)
- {
- return MaybeNativeObject(global->getOrCreateObject(cx, ARRAY_ITERATOR_PROTO, initArrayIteratorProto));
+ static NativeObject*
+ getOrCreateArrayIteratorPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return MaybeNativeObject(getOrCreateObject(cx, global, ARRAY_ITERATOR_PROTO,
+ initArrayIteratorProto));
}
- static NativeObject* getOrCreateStringIteratorPrototype(JSContext* cx,
- Handle<GlobalObject*> global)
- {
- return MaybeNativeObject(global->getOrCreateObject(cx, STRING_ITERATOR_PROTO, initStringIteratorProto));
+ static NativeObject*
+ getOrCreateStringIteratorPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return MaybeNativeObject(getOrCreateObject(cx, global, STRING_ITERATOR_PROTO,
+ initStringIteratorProto));
}
- static NativeObject* getOrCreateLegacyGeneratorObjectPrototype(JSContext* cx,
- Handle<GlobalObject*> global)
- {
- return MaybeNativeObject(global->getOrCreateObject(cx, LEGACY_GENERATOR_OBJECT_PROTO,
- initLegacyGeneratorProto));
+ static NativeObject*
+ getOrCreateLegacyGeneratorObjectPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return MaybeNativeObject(getOrCreateObject(cx, global, LEGACY_GENERATOR_OBJECT_PROTO,
+ initLegacyGeneratorProto));
}
- static NativeObject* getOrCreateStarGeneratorObjectPrototype(JSContext* cx,
- Handle<GlobalObject*> global)
+ static NativeObject*
+ getOrCreateStarGeneratorObjectPrototype(JSContext* cx, Handle<GlobalObject*> global)
{
- return MaybeNativeObject(global->getOrCreateObject(cx, STAR_GENERATOR_OBJECT_PROTO, initStarGenerators));
+ return MaybeNativeObject(getOrCreateObject(cx, global, STAR_GENERATOR_OBJECT_PROTO,
+ initStarGenerators));
}
- static NativeObject* getOrCreateStarGeneratorFunctionPrototype(JSContext* cx,
- Handle<GlobalObject*> global)
- {
- return MaybeNativeObject(global->getOrCreateObject(cx, STAR_GENERATOR_FUNCTION_PROTO, initStarGenerators));
+ static NativeObject*
+ getOrCreateStarGeneratorFunctionPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return MaybeNativeObject(getOrCreateObject(cx, global, STAR_GENERATOR_FUNCTION_PROTO,
+ initStarGenerators));
}
- static JSObject* getOrCreateStarGeneratorFunction(JSContext* cx,
- Handle<GlobalObject*> global)
- {
- return global->getOrCreateObject(cx, STAR_GENERATOR_FUNCTION, initStarGenerators);
+ static JSObject*
+ getOrCreateStarGeneratorFunction(JSContext* cx, Handle<GlobalObject*> global) {
+ return getOrCreateObject(cx, global, STAR_GENERATOR_FUNCTION, initStarGenerators);
}
- static NativeObject* getOrCreateAsyncFunctionPrototype(JSContext* cx,
- Handle<GlobalObject*> global)
- {
- return MaybeNativeObject(global->getOrCreateObject(cx, ASYNC_FUNCTION_PROTO,
- initAsyncFunction));
+ static NativeObject*
+ getOrCreateAsyncFunctionPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return MaybeNativeObject(getOrCreateObject(cx, global, ASYNC_FUNCTION_PROTO,
+ initAsyncFunction));
}
- static JSObject* getOrCreateAsyncFunction(JSContext* cx,
- Handle<GlobalObject*> global)
- {
- return global->getOrCreateObject(cx, ASYNC_FUNCTION, initAsyncFunction);
+ static JSObject*
+ getOrCreateAsyncFunction(JSContext* cx, Handle<GlobalObject*> global) {
+ return getOrCreateObject(cx, global, ASYNC_FUNCTION, initAsyncFunction);
}
- static JSObject* getOrCreateMapIteratorPrototype(JSContext* cx,
- Handle<GlobalObject*> global)
- {
- return global->getOrCreateObject(cx, MAP_ITERATOR_PROTO, initMapIteratorProto);
+ static JSObject*
+ getOrCreateMapIteratorPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return getOrCreateObject(cx, global, MAP_ITERATOR_PROTO, initMapIteratorProto);
}
- static JSObject* getOrCreateSetIteratorPrototype(JSContext* cx,
- Handle<GlobalObject*> global)
- {
- return global->getOrCreateObject(cx, SET_ITERATOR_PROTO, initSetIteratorProto);
+ static JSObject*
+ getOrCreateSetIteratorPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return getOrCreateObject(cx, global, SET_ITERATOR_PROTO, initSetIteratorProto);
}
- JSObject* getOrCreateDataViewPrototype(JSContext* cx) {
- RootedGlobalObject self(cx, this);
- if (!ensureConstructor(cx, self, JSProto_DataView))
+ static JSObject*
+ getOrCreateDataViewPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ if (!ensureConstructor(cx, global, JSProto_DataView))
return nullptr;
- return &self->getPrototype(JSProto_DataView).toObject();
+ return &global->getPrototype(JSProto_DataView).toObject();
}
static JSFunction*
@@ -678,8 +689,9 @@ class GlobalObject : public NativeObject
return true;
}
- static bool getIntrinsicValue(JSContext* cx, Handle<GlobalObject*> global,
- HandlePropertyName name, MutableHandleValue value)
+ static bool
+ getIntrinsicValue(JSContext* cx, Handle<GlobalObject*> global,
+ HandlePropertyName name, MutableHandleValue value)
{
bool exists = false;
if (!GlobalObject::maybeGetIntrinsicValue(cx, global, name, value, &exists))
@@ -709,7 +721,8 @@ class GlobalObject : public NativeObject
unsigned nargs, MutableHandleValue funVal);
bool hasRegExpStatics() const;
- RegExpStatics* getRegExpStatics(ExclusiveContext* cx) const;
+ static RegExpStatics* getRegExpStatics(ExclusiveContext* cx,
+ Handle<GlobalObject*> global);
RegExpStatics* getAlreadyCreatedRegExpStatics() const;
JSObject* getThrowTypeError() const {
@@ -996,7 +1009,7 @@ GenericCreateConstructor(JSContext* cx, JSProtoKey key)
// Note - We duplicate the trick from ClassName() so that we don't need to
// include jsatominlines.h here.
PropertyName* name = (&cx->names().Null)[key];
- return cx->global()->createConstructor(cx, ctor, name, length, kind, jitInfo);
+ return GlobalObject::createConstructor(cx, ctor, name, length, kind, jitInfo);
}
inline JSObject*
@@ -1009,7 +1022,7 @@ GenericCreatePrototype(JSContext* cx, JSProtoKey key)
if (!GlobalObject::ensureConstructor(cx, cx->global(), protoKey))
return nullptr;
RootedObject parentProto(cx, &cx->global()->getPrototype(protoKey).toObject());
- return cx->global()->createBlankPrototypeInheriting(cx, clasp, parentProto);
+ return GlobalObject::createBlankPrototypeInheriting(cx, cx->global(), clasp, parentProto);
}
inline JSProtoKey
diff --git a/js/src/vm/HelperThreads.cpp b/js/src/vm/HelperThreads.cpp
index bd29d0c79..44915521f 100644
--- a/js/src/vm/HelperThreads.cpp
+++ b/js/src/vm/HelperThreads.cpp
@@ -1291,7 +1291,7 @@ GlobalHelperThreadState::finishModuleParseTask(JSContext* cx, void* token)
MOZ_ASSERT(script->module());
RootedModuleObject module(cx, script->module());
- module->fixEnvironmentsAfterCompartmentMerge(cx);
+ module->fixEnvironmentsAfterCompartmentMerge();
if (!ModuleObject::Freeze(cx, module))
return nullptr;
diff --git a/js/src/vm/Interpreter-inl.h b/js/src/vm/Interpreter-inl.h
index 5f476c4ff..acfa8f74b 100644
--- a/js/src/vm/Interpreter-inl.h
+++ b/js/src/vm/Interpreter-inl.h
@@ -22,7 +22,6 @@
#include "vm/EnvironmentObject-inl.h"
#include "vm/Stack-inl.h"
#include "vm/String-inl.h"
-#include "vm/UnboxedObject-inl.h"
namespace js {
@@ -337,14 +336,10 @@ InitGlobalLexicalOperation(JSContext* cx, LexicalEnvironmentObject* lexicalEnvAr
inline bool
InitPropertyOperation(JSContext* cx, JSOp op, HandleObject obj, HandleId id, HandleValue rhs)
{
- if (obj->is<PlainObject>() || obj->is<JSFunction>()) {
- unsigned propAttrs = GetInitDataPropAttrs(op);
- return NativeDefineProperty(cx, obj.as<NativeObject>(), id, rhs, nullptr, nullptr,
- propAttrs);
- }
-
- MOZ_ASSERT(obj->as<UnboxedPlainObject>().layout().lookup(id));
- return PutProperty(cx, obj, id, rhs, false);
+ MOZ_ASSERT(obj->is<PlainObject>() || obj->is<JSFunction>());
+ unsigned propAttrs = GetInitDataPropAttrs(op);
+ return NativeDefineProperty(cx, obj.as<NativeObject>(), id, rhs,
+ nullptr, nullptr, propAttrs);
}
inline bool
@@ -598,7 +593,7 @@ InitArrayElemOperation(JSContext* cx, jsbytecode* pc, HandleObject obj, uint32_t
JSOp op = JSOp(*pc);
MOZ_ASSERT(op == JSOP_INITELEM_ARRAY || op == JSOP_INITELEM_INC);
- MOZ_ASSERT(obj->is<ArrayObject>() || obj->is<UnboxedArrayObject>());
+ MOZ_ASSERT(obj->is<ArrayObject>());
if (op == JSOP_INITELEM_INC && index == INT32_MAX) {
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_SPREAD_TOO_LARGE);
@@ -835,7 +830,7 @@ class FastCallGuard
if (useIon_ && fun_) {
if (!script_) {
- script_ = fun_->getOrCreateScript(cx);
+ script_ = JSFunction::getOrCreateScript(cx, fun_);
if (!script_)
return false;
}
diff --git a/js/src/vm/Interpreter.cpp b/js/src/vm/Interpreter.cpp
index b747e4d7a..030f0f3b6 100644
--- a/js/src/vm/Interpreter.cpp
+++ b/js/src/vm/Interpreter.cpp
@@ -261,11 +261,16 @@ SetPropertyOperation(JSContext* cx, JSOp op, HandleValue lval, HandleId id, Hand
}
static JSFunction*
-MakeDefaultConstructor(JSContext* cx, JSOp op, JSAtom* atom, HandleObject proto)
+MakeDefaultConstructor(JSContext* cx, HandleScript script, jsbytecode* pc, HandleObject proto)
{
+ JSOp op = JSOp(*pc);
+ JSAtom* atom = script->getAtom(pc);
bool derived = op == JSOP_DERIVEDCONSTRUCTOR;
MOZ_ASSERT(derived == !!proto);
+ jssrcnote* classNote = GetSrcNote(cx, script, pc);
+ MOZ_ASSERT(classNote && SN_TYPE(classNote) == SRC_CLASS_SPAN);
+
PropertyName* lookup = derived ? cx->names().DefaultDerivedClassConstructor
: cx->names().DefaultBaseClassConstructor;
@@ -285,6 +290,17 @@ MakeDefaultConstructor(JSContext* cx, JSOp op, JSAtom* atom, HandleObject proto)
MOZ_ASSERT(ctor->infallibleIsDefaultClassConstructor(cx));
+ // Create the script now, as the source span needs to be overridden for
+ // toString. Calling toString on a class constructor must not return the
+ // source for just the constructor function.
+ JSScript *ctorScript = JSFunction::getOrCreateScript(cx, ctor);
+ if (!ctorScript)
+ return nullptr;
+ uint32_t classStartOffset = GetSrcNoteOffset(classNote, 0);
+ uint32_t classEndOffset = GetSrcNoteOffset(classNote, 1);
+ ctorScript->setDefaultClassConstructorSpan(script->sourceObject(), classStartOffset,
+ classEndOffset);
+
return ctor;
}
@@ -373,7 +389,7 @@ js::RunScript(JSContext* cx, RunState& state)
SPSEntryMarker marker(cx->runtime(), state.script());
- state.script()->ensureNonLazyCanonicalFunction(cx);
+ state.script()->ensureNonLazyCanonicalFunction();
if (jit::IsIonEnabled(cx)) {
jit::MethodStatus status = jit::CanEnter(cx, state);
@@ -446,7 +462,7 @@ js::InternalCallOrConstruct(JSContext* cx, const CallArgs& args, MaybeConstruct
}
/* Invoke native functions. */
- JSFunction* fun = &args.callee().as<JSFunction>();
+ RootedFunction fun(cx, &args.callee().as<JSFunction>());
if (construct != CONSTRUCT && fun->isClassConstructor()) {
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_CANT_CALL_CLASS_CONSTRUCTOR);
return false;
@@ -454,10 +470,16 @@ js::InternalCallOrConstruct(JSContext* cx, const CallArgs& args, MaybeConstruct
if (fun->isNative()) {
MOZ_ASSERT_IF(construct, !fun->isConstructor());
- return CallJSNative(cx, fun->native(), args);
+ JSNative native = fun->native();
+ if (!construct && args.ignoresReturnValue()) {
+ const JSJitInfo* jitInfo = fun->jitInfo();
+ if (jitInfo && jitInfo->type() == JSJitInfo::IgnoresReturnValueNative)
+ native = jitInfo->ignoresReturnValueMethod;
+ }
+ return CallJSNative(cx, native, args);
}
- if (!fun->getOrCreateScript(cx))
+ if (!JSFunction::getOrCreateScript(cx, fun))
return false;
/* Run function until JSOP_RETRVAL, JSOP_RETURN or error. */
@@ -718,14 +740,14 @@ js::Execute(JSContext* cx, HandleScript script, JSObject& envChainArg, Value* rv
}
/*
- * ES6 (4-25-16) 12.10.4 InstanceofOperator
+ * ES6 12.9.4 InstanceofOperator
*/
extern bool
-js::InstanceOfOperator(JSContext* cx, HandleObject obj, HandleValue v, bool* bp)
+JS::InstanceofOperator(JSContext* cx, HandleObject obj, HandleValue v, bool* bp)
{
/* Step 1. is handled by caller. */
- /* Step 2. */
+ /* Step 2-3. */
RootedValue hasInstance(cx);
RootedId id(cx, SYMBOL_TO_JSID(cx->wellKnownSymbols().hasInstance));
if (!GetProperty(cx, obj, obj, id, &hasInstance))
@@ -735,7 +757,7 @@ js::InstanceOfOperator(JSContext* cx, HandleObject obj, HandleValue v, bool* bp)
if (!IsCallable(hasInstance))
return ReportIsNotFunction(cx, hasInstance);
- /* Step 3. */
+ /* Step 4. */
RootedValue rval(cx);
if (!Call(cx, hasInstance, obj, v, &rval))
return false;
@@ -743,13 +765,13 @@ js::InstanceOfOperator(JSContext* cx, HandleObject obj, HandleValue v, bool* bp)
return true;
}
- /* Step 4. */
+ /* Step 5. */
if (!obj->isCallable()) {
RootedValue val(cx, ObjectValue(*obj));
return ReportIsNotFunction(cx, val);
}
- /* Step 5. */
+ /* Step 6. */
return OrdinaryHasInstance(cx, obj, v, bp);
}
@@ -760,7 +782,7 @@ js::HasInstance(JSContext* cx, HandleObject obj, HandleValue v, bool* bp)
RootedValue local(cx, v);
if (JSHasInstanceOp hasInstance = clasp->getHasInstance())
return hasInstance(cx, obj, &local, bp);
- return js::InstanceOfOperator(cx, obj, local, bp);
+ return JS::InstanceofOperator(cx, obj, local, bp);
}
static inline bool
@@ -1543,7 +1565,7 @@ SetObjectElementOperation(JSContext* cx, HandleObject obj, HandleId id, HandleVa
}
}
- if (obj->isNative() && !JSID_IS_INT(id) && !obj->setHadElementsAccess(cx))
+ if (obj->isNative() && !JSID_IS_INT(id) && !JSObject::setHadElementsAccess(cx, obj))
return false;
ObjectOpResult result;
@@ -1916,6 +1938,7 @@ CASE(EnableInterruptsPseudoOpcode)
/* Various 1-byte no-ops. */
CASE(JSOP_NOP)
CASE(JSOP_NOP_DESTRUCTURING)
+CASE(JSOP_UNUSED126)
CASE(JSOP_UNUSED192)
CASE(JSOP_UNUSED209)
CASE(JSOP_UNUSED210)
@@ -2958,6 +2981,7 @@ CASE(JSOP_FUNAPPLY)
CASE(JSOP_NEW)
CASE(JSOP_CALL)
+CASE(JSOP_CALL_IGNORES_RV)
CASE(JSOP_CALLITER)
CASE(JSOP_SUPERCALL)
CASE(JSOP_FUNCALL)
@@ -2966,10 +2990,11 @@ CASE(JSOP_FUNCALL)
cx->runtime()->spsProfiler.updatePC(script, REGS.pc);
MaybeConstruct construct = MaybeConstruct(*REGS.pc == JSOP_NEW || *REGS.pc == JSOP_SUPERCALL);
+ bool ignoresReturnValue = *REGS.pc == JSOP_CALL_IGNORES_RV;
unsigned argStackSlots = GET_ARGC(REGS.pc) + construct;
MOZ_ASSERT(REGS.stackDepth() >= 2u + GET_ARGC(REGS.pc));
- CallArgs args = CallArgsFromSp(argStackSlots, REGS.sp, construct);
+ CallArgs args = CallArgsFromSp(argStackSlots, REGS.sp, construct, ignoresReturnValue);
JSFunction* maybeFun;
bool isFunction = IsFunctionObject(args.calleev(), &maybeFun);
@@ -2999,7 +3024,7 @@ CASE(JSOP_FUNCALL)
{
MOZ_ASSERT(maybeFun);
ReservedRooted<JSFunction*> fun(&rootFunction0, maybeFun);
- ReservedRooted<JSScript*> funScript(&rootScript0, fun->getOrCreateScript(cx));
+ ReservedRooted<JSScript*> funScript(&rootScript0, JSFunction::getOrCreateScript(cx, fun));
if (!funScript)
goto error;
@@ -3636,7 +3661,6 @@ CASE(JSOP_NEWINIT)
END_CASE(JSOP_NEWINIT)
CASE(JSOP_NEWARRAY)
-CASE(JSOP_SPREADCALLARRAY)
{
uint32_t length = GET_UINT32(REGS.pc);
JSObject* obj = NewArrayOperation(cx, script, REGS.pc, length);
@@ -4111,7 +4135,7 @@ CASE(JSOP_INITHOMEOBJECT)
/* Load the home object */
ReservedRooted<JSObject*> obj(&rootObject0);
obj = &REGS.sp[int(-2 - skipOver)].toObject();
- MOZ_ASSERT(obj->is<PlainObject>() || obj->is<UnboxedPlainObject>() || obj->is<JSFunction>());
+ MOZ_ASSERT(obj->is<PlainObject>() || obj->is<JSFunction>());
func->setExtendedSlot(FunctionExtended::METHOD_HOMEOBJECT_SLOT, ObjectValue(*obj));
}
@@ -4174,8 +4198,8 @@ CASE(JSOP_DERIVEDCONSTRUCTOR)
MOZ_ASSERT(REGS.sp[-1].isObject());
ReservedRooted<JSObject*> proto(&rootObject0, &REGS.sp[-1].toObject());
- JSFunction* constructor = MakeDefaultConstructor(cx, JSOp(*REGS.pc), script->getAtom(REGS.pc),
- proto);
+ JSFunction* constructor = MakeDefaultConstructor(cx, script, REGS.pc, proto);
+
if (!constructor)
goto error;
@@ -4185,8 +4209,7 @@ END_CASE(JSOP_DERIVEDCONSTRUCTOR)
CASE(JSOP_CLASSCONSTRUCTOR)
{
- JSFunction* constructor = MakeDefaultConstructor(cx, JSOp(*REGS.pc), script->getAtom(REGS.pc),
- nullptr);
+ JSFunction* constructor = MakeDefaultConstructor(cx, script, REGS.pc, nullptr);
if (!constructor)
goto error;
PUSH_OBJECT(*constructor);
@@ -4725,7 +4748,8 @@ js::RunOnceScriptPrologue(JSContext* cx, HandleScript script)
// Force instantiation of the script's function's group to ensure the flag
// is preserved in type information.
- if (!script->functionNonDelazifying()->getGroup(cx))
+ RootedFunction fun(cx, script->functionNonDelazifying());
+ if (!JSObject::getGroup(cx, fun))
return false;
MarkObjectGroupFlags(cx, script->functionNonDelazifying(), OBJECT_FLAG_RUNONCE_INVALIDATED);
@@ -4927,18 +4951,13 @@ js::NewObjectOperation(JSContext* cx, HandleScript script, jsbytecode* pc,
return nullptr;
if (group->maybePreliminaryObjects()) {
group->maybePreliminaryObjects()->maybeAnalyze(cx, group);
- if (group->maybeUnboxedLayout())
- group->maybeUnboxedLayout()->setAllocationSite(script, pc);
}
if (group->shouldPreTenure() || group->maybePreliminaryObjects())
newKind = TenuredObject;
-
- if (group->maybeUnboxedLayout())
- return UnboxedPlainObject::create(cx, group, newKind);
}
- RootedObject obj(cx);
+ RootedPlainObject obj(cx);
if (*pc == JSOP_NEWOBJECT) {
RootedPlainObject baseObject(cx, &script->getObject(pc)->as<PlainObject>());
@@ -4975,11 +4994,6 @@ js::NewObjectOperationWithTemplate(JSContext* cx, HandleObject templateObject)
NewObjectKind newKind = templateObject->group()->shouldPreTenure() ? TenuredObject : GenericObject;
- if (templateObject->group()->maybeUnboxedLayout()) {
- RootedObjectGroup group(cx, templateObject->group());
- return UnboxedPlainObject::create(cx, group, newKind);
- }
-
JSObject* obj = CopyInitializerObject(cx, templateObject.as<PlainObject>(), newKind);
if (!obj)
return nullptr;
@@ -5006,9 +5020,6 @@ js::NewArrayOperation(JSContext* cx, HandleScript script, jsbytecode* pc, uint32
if (group->shouldPreTenure() || group->maybePreliminaryObjects())
newKind = TenuredObject;
-
- if (group->maybeUnboxedLayout())
- return UnboxedArrayObject::create(cx, group, length, newKind);
}
ArrayObject* obj = NewDenseFullyAllocatedArray(cx, length, nullptr, newKind);
@@ -5019,9 +5030,6 @@ js::NewArrayOperation(JSContext* cx, HandleScript script, jsbytecode* pc, uint32
MOZ_ASSERT(obj->isSingleton());
} else {
obj->setGroup(group);
-
- if (PreliminaryObjectArray* preliminaryObjects = group->maybePreliminaryObjects())
- preliminaryObjects->registerNewObject(obj);
}
return obj;
@@ -5034,12 +5042,6 @@ js::NewArrayOperationWithTemplate(JSContext* cx, HandleObject templateObject)
NewObjectKind newKind = templateObject->group()->shouldPreTenure() ? TenuredObject : GenericObject;
- if (templateObject->is<UnboxedArrayObject>()) {
- uint32_t length = templateObject->as<UnboxedArrayObject>().length();
- RootedObjectGroup group(cx, templateObject->group());
- return UnboxedArrayObject::create(cx, group, length, newKind);
- }
-
ArrayObject* obj = NewDenseFullyAllocatedArray(cx, templateObject->as<ArrayObject>().length(),
nullptr, newKind);
if (!obj)
diff --git a/js/src/vm/Interpreter.h b/js/src/vm/Interpreter.h
index 330dbef5f..9fefd75cc 100644
--- a/js/src/vm/Interpreter.h
+++ b/js/src/vm/Interpreter.h
@@ -323,9 +323,6 @@ extern JSType
TypeOfValue(const Value& v);
extern bool
-InstanceOfOperator(JSContext* cx, HandleObject obj, HandleValue v, bool* bp);
-
-extern bool
HasInstance(JSContext* cx, HandleObject obj, HandleValue v, bool* bp);
// Unwind environment chain and iterator to match the scope corresponding to
diff --git a/js/src/vm/JSONParser.cpp b/js/src/vm/JSONParser.cpp
index 01883bb15..e50da3bc4 100644
--- a/js/src/vm/JSONParser.cpp
+++ b/js/src/vm/JSONParser.cpp
@@ -606,8 +606,8 @@ JSONParserBase::finishArray(MutableHandleValue vp, ElementVector& elements)
{
MOZ_ASSERT(&elements == &stack.back().elements());
- JSObject* obj = ObjectGroup::newArrayObject(cx, elements.begin(), elements.length(),
- GenericObject);
+ ArrayObject* obj = ObjectGroup::newArrayObject(cx, elements.begin(), elements.length(),
+ GenericObject);
if (!obj)
return false;
diff --git a/js/src/vm/Keywords.h b/js/src/vm/Keywords.h
deleted file mode 100644
index ef37c4419..000000000
--- a/js/src/vm/Keywords.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- * vim: set ts=8 sts=4 et sw=4 tw=99:
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* A higher-order macro for enumerating keyword tokens. */
-
-#ifndef vm_Keywords_h
-#define vm_Keywords_h
-
-#define FOR_EACH_JAVASCRIPT_KEYWORD(macro) \
- macro(false, false_, TOK_FALSE) \
- macro(true, true_, TOK_TRUE) \
- macro(null, null, TOK_NULL) \
- /* Keywords. */ \
- macro(break, break_, TOK_BREAK) \
- macro(case, case_, TOK_CASE) \
- macro(catch, catch_, TOK_CATCH) \
- macro(const, const_, TOK_CONST) \
- macro(continue, continue_, TOK_CONTINUE) \
- macro(debugger, debugger, TOK_DEBUGGER) \
- macro(default, default_, TOK_DEFAULT) \
- macro(delete, delete_, TOK_DELETE) \
- macro(do, do_, TOK_DO) \
- macro(else, else_, TOK_ELSE) \
- macro(finally, finally_, TOK_FINALLY) \
- macro(for, for_, TOK_FOR) \
- macro(function, function, TOK_FUNCTION) \
- macro(if, if_, TOK_IF) \
- macro(in, in, TOK_IN) \
- macro(instanceof, instanceof, TOK_INSTANCEOF) \
- macro(new, new_, TOK_NEW) \
- macro(return, return_, TOK_RETURN) \
- macro(switch, switch_, TOK_SWITCH) \
- macro(this, this_, TOK_THIS) \
- macro(throw, throw_, TOK_THROW) \
- macro(try, try_, TOK_TRY) \
- macro(typeof, typeof, TOK_TYPEOF) \
- macro(var, var, TOK_VAR) \
- macro(void, void_, TOK_VOID) \
- macro(while, while_, TOK_WHILE) \
- macro(with, with, TOK_WITH) \
- macro(import, import, TOK_IMPORT) \
- macro(export, export, TOK_EXPORT) \
- macro(class, class_, TOK_CLASS) \
- macro(extends, extends, TOK_EXTENDS) \
- macro(super, super, TOK_SUPER) \
- /* Reserved keywords. */ \
- macro(enum, enum_, TOK_RESERVED) \
- /* Future reserved keywords, but only in strict mode. */ \
- macro(implements, implements, TOK_STRICT_RESERVED) \
- macro(interface, interface, TOK_STRICT_RESERVED) \
- macro(package, package, TOK_STRICT_RESERVED) \
- macro(private, private_, TOK_STRICT_RESERVED) \
- macro(protected, protected_, TOK_STRICT_RESERVED) \
- macro(public, public_, TOK_STRICT_RESERVED) \
- macro(await, await, TOK_AWAIT) \
- /* \
- * Yield is a token inside function*. Outside of a function*, it is a \
- * future reserved keyword in strict mode, but a keyword in JS1.7 even \
- * when strict. Punt logic to parser. \
- */ \
- macro(yield, yield, TOK_YIELD)
-
-#endif /* vm_Keywords_h */
diff --git a/js/src/vm/NativeObject-inl.h b/js/src/vm/NativeObject-inl.h
index 48a42a8db..030d92c12 100644
--- a/js/src/vm/NativeObject-inl.h
+++ b/js/src/vm/NativeObject-inl.h
@@ -158,11 +158,11 @@ NativeObject::extendDenseElements(ExclusiveContext* cx,
MOZ_ASSERT(!denseElementsAreFrozen());
/*
- * Don't grow elements for non-extensible objects or watched objects. Dense
- * elements can be added/written with no extensible or watchpoint checks as
- * long as there is capacity for them.
+ * Don't grow elements for non-extensible objects. Dense elements can be
+ * added/written with no extensible checks as long as there is capacity
+ * for them.
*/
- if (!nonProxyIsExtensible() || watched()) {
+ if (!nonProxyIsExtensible()) {
MOZ_ASSERT(getDenseCapacity() == 0);
return DenseElementResult::Incomplete;
}
@@ -235,6 +235,38 @@ NativeObject::ensureDenseElements(ExclusiveContext* cx, uint32_t index, uint32_t
return DenseElementResult::Success;
}
+inline DenseElementResult
+NativeObject::setOrExtendDenseElements(ExclusiveContext* cx, uint32_t start, const Value* vp,
+ uint32_t count,
+ ShouldUpdateTypes updateTypes)
+{
+ if (denseElementsAreFrozen())
+ return DenseElementResult::Incomplete;
+
+ if (is<ArrayObject>() &&
+ !as<ArrayObject>().lengthIsWritable() &&
+ start + count >= as<ArrayObject>().length())
+ {
+ return DenseElementResult::Incomplete;
+ }
+
+ DenseElementResult result = ensureDenseElements(cx, start, count);
+ if (result != DenseElementResult::Success)
+ return result;
+
+ if (is<ArrayObject>() && start + count >= as<ArrayObject>().length())
+ as<ArrayObject>().setLengthInt32(start + count);
+
+ if (updateTypes == ShouldUpdateTypes::DontUpdate && !shouldConvertDoubleElements()) {
+ copyDenseElements(start, vp, count);
+ } else {
+ for (size_t i = 0; i < count; i++)
+ setDenseElementWithType(cx, start + i, vp[i]);
+ }
+
+ return DenseElementResult::Success;
+}
+
inline Value
NativeObject::getDenseOrTypedArrayElement(uint32_t idx)
{
diff --git a/js/src/vm/NativeObject.cpp b/js/src/vm/NativeObject.cpp
index 21f73f4a9..d801fad06 100644
--- a/js/src/vm/NativeObject.cpp
+++ b/js/src/vm/NativeObject.cpp
@@ -9,8 +9,6 @@
#include "mozilla/ArrayUtils.h"
#include "mozilla/Casting.h"
-#include "jswatchpoint.h"
-
#include "gc/Marking.h"
#include "js/Value.h"
#include "vm/Debugger.h"
@@ -390,33 +388,6 @@ NativeObject::setLastPropertyMakeNonNative(Shape* shape)
shape_ = shape;
}
-void
-NativeObject::setLastPropertyMakeNative(ExclusiveContext* cx, Shape* shape)
-{
- MOZ_ASSERT(getClass()->isNative());
- MOZ_ASSERT(shape->getObjectClass()->isNative());
- MOZ_ASSERT(!shape->inDictionary());
-
- // This method is used to convert unboxed objects into native objects. In
- // this case, the shape_ field was previously used to store other data and
- // this should be treated as an initialization.
- shape_.init(shape);
-
- slots_ = nullptr;
- elements_ = emptyObjectElements;
-
- size_t oldSpan = shape->numFixedSlots();
- size_t newSpan = shape->slotSpan();
-
- initializeSlotRange(0, oldSpan);
-
- // A failure at this point will leave the object as a mutant, and we
- // can't recover.
- AutoEnterOOMUnsafeRegion oomUnsafe;
- if (oldSpan != newSpan && !updateSlotsForSpan(cx, oldSpan, newSpan))
- oomUnsafe.crash("NativeObject::setLastPropertyMakeNative");
-}
-
bool
NativeObject::setSlotSpan(ExclusiveContext* cx, uint32_t span)
{
@@ -629,7 +600,7 @@ NativeObject::maybeDensifySparseElements(js::ExclusiveContext* cx, HandleNativeO
return DenseElementResult::Incomplete;
/* Watch for conditions under which an object's elements cannot be dense. */
- if (!obj->nonProxyIsExtensible() || obj->watched())
+ if (!obj->nonProxyIsExtensible())
return DenseElementResult::Incomplete;
/*
@@ -699,10 +670,10 @@ NativeObject::maybeDensifySparseElements(js::ExclusiveContext* cx, HandleNativeO
*/
if (shape != obj->lastProperty()) {
shape = shape->previous();
- if (!obj->removeProperty(cx, id))
+ if (!NativeObject::removeProperty(cx, obj, id))
return DenseElementResult::Failure;
} else {
- if (!obj->removeProperty(cx, id))
+ if (!NativeObject::removeProperty(cx, obj, id))
return DenseElementResult::Failure;
shape = obj->lastProperty();
}
@@ -718,7 +689,7 @@ NativeObject::maybeDensifySparseElements(js::ExclusiveContext* cx, HandleNativeO
* flag so that we will not start using sparse indexes again if we need
* to grow the object.
*/
- if (!obj->clearFlag(cx, BaseShape::INDEXED))
+ if (!NativeObject::clearFlag(cx, obj, BaseShape::INDEXED))
return DenseElementResult::Failure;
return DenseElementResult::Success;
@@ -1023,23 +994,22 @@ NativeObject::freeSlot(ExclusiveContext* cx, uint32_t slot)
setSlot(slot, UndefinedValue());
}
-Shape*
-NativeObject::addDataProperty(ExclusiveContext* cx, jsid idArg, uint32_t slot, unsigned attrs)
+/* static */ Shape*
+NativeObject::addDataProperty(ExclusiveContext* cx, HandleNativeObject obj,
+ jsid idArg, uint32_t slot, unsigned attrs)
{
MOZ_ASSERT(!(attrs & (JSPROP_GETTER | JSPROP_SETTER)));
- RootedNativeObject self(cx, this);
RootedId id(cx, idArg);
- return addProperty(cx, self, id, nullptr, nullptr, slot, attrs, 0);
+ return addProperty(cx, obj, id, nullptr, nullptr, slot, attrs, 0);
}
-Shape*
-NativeObject::addDataProperty(ExclusiveContext* cx, HandlePropertyName name,
- uint32_t slot, unsigned attrs)
+/* static */ Shape*
+NativeObject::addDataProperty(ExclusiveContext* cx, HandleNativeObject obj,
+ HandlePropertyName name, uint32_t slot, unsigned attrs)
{
MOZ_ASSERT(!(attrs & (JSPROP_GETTER | JSPROP_SETTER)));
- RootedNativeObject self(cx, this);
RootedId id(cx, NameToId(name));
- return addProperty(cx, self, id, nullptr, nullptr, slot, attrs, 0);
+ return addProperty(cx, obj, id, nullptr, nullptr, slot, attrs, 0);
}
template <AllowGC allowGC>
@@ -1073,7 +1043,7 @@ CallAddPropertyHook(ExclusiveContext* cx, HandleNativeObject obj, HandleShape sh
RootedId id(cx, shape->propid());
if (!CallJSAddPropertyOp(cx->asJSContext(), addProperty, obj, id, value)) {
- obj->removeProperty(cx, shape->propid());
+ NativeObject::removeProperty(cx, obj, shape->propid());
return false;
}
}
@@ -1145,7 +1115,7 @@ PurgeProtoChain(ExclusiveContext* cx, JSObject* objArg, HandleId id)
shape = obj->as<NativeObject>().lookup(cx, id);
if (shape)
- return obj->as<NativeObject>().shadowingShapeChange(cx, *shape);
+ return NativeObject::shadowingShapeChange(cx, obj.as<NativeObject>(), *shape);
obj = obj->staticPrototype();
}
@@ -2438,17 +2408,9 @@ SetExistingProperty(JSContext* cx, HandleNativeObject obj, HandleId id, HandleVa
}
bool
-js::NativeSetProperty(JSContext* cx, HandleNativeObject obj, HandleId id, HandleValue value,
+js::NativeSetProperty(JSContext* cx, HandleNativeObject obj, HandleId id, HandleValue v,
HandleValue receiver, QualifiedBool qualified, ObjectOpResult& result)
{
- // Fire watchpoints, if any.
- RootedValue v(cx, value);
- if (MOZ_UNLIKELY(obj->watched())) {
- WatchpointMap* wpmap = cx->compartment()->watchpointMap;
- if (wpmap && !wpmap->triggerWatchpoint(cx, obj, id, &v))
- return false;
- }
-
// Step numbers below reference ES6 rev 27 9.1.9, the [[Set]] internal
// method for ordinary objects. We substitute our own names for these names
// used in the spec: O -> pobj, P -> id, ownDesc -> shape.
@@ -2556,7 +2518,7 @@ js::NativeDeleteProperty(JSContext* cx, HandleNativeObject obj, HandleId id,
obj->setDenseElementHole(cx, JSID_TO_INT(id));
} else {
- if (!obj->removeProperty(cx, id))
+ if (!NativeObject::removeProperty(cx, obj, id))
return false;
}
diff --git a/js/src/vm/NativeObject.h b/js/src/vm/NativeObject.h
index d2c06eabc..9cc6d5436 100644
--- a/js/src/vm/NativeObject.h
+++ b/js/src/vm/NativeObject.h
@@ -339,16 +339,19 @@ IsObjectValueInCompartment(const Value& v, JSCompartment* comp);
#endif
// Operations which change an object's dense elements can either succeed, fail,
-// or be unable to complete. For native objects, the latter is used when the
-// object's elements must become sparse instead. The enum below is used for
-// such operations, and for similar operations on unboxed arrays and methods
-// that work on both kinds of objects.
+// or be unable to complete. The latter is used when the object's elements must
+// become sparse instead. The enum below is used for such operations.
enum class DenseElementResult {
Failure,
Success,
Incomplete
};
+enum class ShouldUpdateTypes {
+ Update,
+ DontUpdate
+};
+
/*
* NativeObject specifies the internal implementation of a native object.
*
@@ -467,11 +470,6 @@ class NativeObject : public ShapedObject
// that are (temporarily) inconsistent.
void setLastPropertyMakeNonNative(Shape* shape);
- // As for setLastProperty(), but changes the class associated with the
- // object to a native one. The object's type has already been changed, and
- // this brings the shape into sync with it.
- void setLastPropertyMakeNative(ExclusiveContext* cx, Shape* shape);
-
// Newly-created TypedArrays that map a SharedArrayBuffer are
// marked as shared by giving them an ObjectElements that has the
// ObjectElements::SHARED_MEMORY flag set.
@@ -493,8 +491,8 @@ class NativeObject : public ShapedObject
void checkShapeConsistency() { }
#endif
- Shape*
- replaceWithNewEquivalentShape(ExclusiveContext* cx,
+ static Shape*
+ replaceWithNewEquivalentShape(ExclusiveContext* cx, HandleNativeObject obj,
Shape* existingShape, Shape* newShape = nullptr,
bool accessorShape = false);
@@ -512,7 +510,7 @@ class NativeObject : public ShapedObject
*/
bool setSlotSpan(ExclusiveContext* cx, uint32_t span);
- bool toDictionaryMode(ExclusiveContext* cx);
+ static MOZ_MUST_USE bool toDictionaryMode(ExclusiveContext* cx, HandleNativeObject obj);
private:
friend class TenuringTracer;
@@ -611,12 +609,15 @@ class NativeObject : public ShapedObject
}
public:
- bool generateOwnShape(ExclusiveContext* cx, Shape* newShape = nullptr) {
- return replaceWithNewEquivalentShape(cx, lastProperty(), newShape);
+ static MOZ_MUST_USE bool generateOwnShape(ExclusiveContext* cx, HandleNativeObject obj,
+ Shape* newShape = nullptr)
+ {
+ return replaceWithNewEquivalentShape(cx, obj, obj->lastProperty(), newShape);
}
- bool shadowingShapeChange(ExclusiveContext* cx, const Shape& shape);
- bool clearFlag(ExclusiveContext* cx, BaseShape::Flag flag);
+ static MOZ_MUST_USE bool shadowingShapeChange(ExclusiveContext* cx, HandleNativeObject obj,
+ const Shape& shape);
+ static bool clearFlag(ExclusiveContext* cx, HandleNativeObject obj, BaseShape::Flag flag);
// The maximum number of slots in an object.
// |MAX_SLOTS_COUNT * sizeof(JS::Value)| shouldn't overflow
@@ -743,10 +744,10 @@ class NativeObject : public ShapedObject
bool allowDictionary = true);
/* Add a data property whose id is not yet in this scope. */
- Shape* addDataProperty(ExclusiveContext* cx,
- jsid id_, uint32_t slot, unsigned attrs);
- Shape* addDataProperty(ExclusiveContext* cx, HandlePropertyName name,
- uint32_t slot, unsigned attrs);
+ static Shape* addDataProperty(ExclusiveContext* cx, HandleNativeObject obj,
+ jsid id_, uint32_t slot, unsigned attrs);
+ static Shape* addDataProperty(ExclusiveContext* cx, HandleNativeObject obj,
+ HandlePropertyName name, uint32_t slot, unsigned attrs);
/* Add or overwrite a property for id in this scope. */
static Shape*
@@ -766,7 +767,7 @@ class NativeObject : public ShapedObject
unsigned attrs, JSGetterOp getter, JSSetterOp setter);
/* Remove the property named by id from this object. */
- bool removeProperty(ExclusiveContext* cx, jsid id);
+ static bool removeProperty(ExclusiveContext* cx, HandleNativeObject obj, jsid id);
/* Clear the scope, making it empty. */
static void clear(ExclusiveContext* cx, HandleNativeObject obj);
@@ -785,7 +786,8 @@ class NativeObject : public ShapedObject
unsigned flags, ShapeTable::Entry* entry, bool allowDictionary,
const AutoKeepShapeTables& keep);
- bool fillInAfterSwap(JSContext* cx, const Vector<Value>& values, void* priv);
+ static MOZ_MUST_USE bool fillInAfterSwap(JSContext* cx, HandleNativeObject obj,
+ const Vector<Value>& values, void* priv);
public:
// Return true if this object has been converted from shared-immutable
@@ -876,7 +878,7 @@ class NativeObject : public ShapedObject
MOZ_ASSERT(end <= getDenseInitializedLength());
MOZ_ASSERT(!denseElementsAreCopyOnWrite());
for (size_t i = start; i < end; i++)
- elements_[i].HeapSlot::~HeapSlot();
+ elements_[i].destroy();
}
/*
@@ -885,7 +887,7 @@ class NativeObject : public ShapedObject
*/
void prepareSlotRangeForOverwrite(size_t start, size_t end) {
for (size_t i = start; i < end; i++)
- getSlotAddressUnchecked(i)->HeapSlot::~HeapSlot();
+ getSlotAddressUnchecked(i)->destroy();
}
public:
@@ -1085,7 +1087,8 @@ class NativeObject : public ShapedObject
for (uint32_t i = 0; i < count; ++i)
elements_[dstStart + i].set(this, HeapSlot::Element, dstStart + i, src[i]);
} else {
- memcpy(&elements_[dstStart], src, count * sizeof(HeapSlot));
+ memcpy(reinterpret_cast<Value*>(&elements_[dstStart]), src,
+ count * sizeof(Value));
elementsRangeWriteBarrierPost(dstStart, count);
}
}
@@ -1094,7 +1097,7 @@ class NativeObject : public ShapedObject
MOZ_ASSERT(dstStart + count <= getDenseCapacity());
MOZ_ASSERT(!denseElementsAreCopyOnWrite());
MOZ_ASSERT(!denseElementsAreFrozen());
- memcpy(&elements_[dstStart], src, count * sizeof(HeapSlot));
+ memcpy(reinterpret_cast<Value*>(&elements_[dstStart]), src, count * sizeof(Value));
elementsRangeWriteBarrierPost(dstStart, count);
}
@@ -1142,10 +1145,14 @@ class NativeObject : public ShapedObject
MOZ_ASSERT(!denseElementsAreCopyOnWrite());
MOZ_ASSERT(!denseElementsAreFrozen());
- memmove(elements_ + dstStart, elements_ + srcStart, count * sizeof(Value));
+ memmove(elements_ + dstStart, elements_ + srcStart, count * sizeof(HeapSlot));
elementsRangeWriteBarrierPost(dstStart, count);
}
+ inline DenseElementResult
+ setOrExtendDenseElements(ExclusiveContext* cx, uint32_t start, const Value* vp, uint32_t count,
+ ShouldUpdateTypes updateTypes = ShouldUpdateTypes::Update);
+
bool shouldConvertDoubleElements() {
return getElementsHeader()->shouldConvertDoubleElements();
}
@@ -1467,19 +1474,6 @@ NativeGetExistingProperty(JSContext* cx, HandleObject receiver, HandleNativeObje
/* * */
-/*
- * If obj has an already-resolved data property for id, return true and
- * store the property value in *vp.
- */
-extern bool
-HasDataProperty(JSContext* cx, NativeObject* obj, jsid id, Value* vp);
-
-inline bool
-HasDataProperty(JSContext* cx, NativeObject* obj, PropertyName* name, Value* vp)
-{
- return HasDataProperty(cx, obj, NameToId(name), vp);
-}
-
extern bool
GetPropertyForNameLookup(JSContext* cx, HandleObject obj, HandleId id, MutableHandleValue vp);
diff --git a/js/src/vm/ObjectGroup-inl.h b/js/src/vm/ObjectGroup-inl.h
index 9074f4d97..d41343be6 100644
--- a/js/src/vm/ObjectGroup-inl.h
+++ b/js/src/vm/ObjectGroup-inl.h
@@ -108,20 +108,6 @@ ObjectGroup::maybePreliminaryObjects()
return maybePreliminaryObjectsDontCheckGeneration();
}
-inline UnboxedLayout*
-ObjectGroup::maybeUnboxedLayout()
-{
- maybeSweep(nullptr);
- return maybeUnboxedLayoutDontCheckGeneration();
-}
-
-inline UnboxedLayout&
-ObjectGroup::unboxedLayout()
-{
- maybeSweep(nullptr);
- return unboxedLayoutDontCheckGeneration();
-}
-
} // namespace js
#endif /* vm_ObjectGroup_inl_h */
diff --git a/js/src/vm/ObjectGroup.cpp b/js/src/vm/ObjectGroup.cpp
index d6a8fcaa4..ec0a7aec1 100644
--- a/js/src/vm/ObjectGroup.cpp
+++ b/js/src/vm/ObjectGroup.cpp
@@ -18,11 +18,10 @@
#include "vm/ArrayObject.h"
#include "vm/Shape.h"
#include "vm/TaggedProto.h"
-#include "vm/UnboxedObject.h"
#include "jsobjinlines.h"
-#include "vm/UnboxedObject-inl.h"
+#include "vm/NativeObject-inl.h"
using namespace js;
@@ -56,7 +55,6 @@ ObjectGroup::finalize(FreeOp* fop)
if (newScriptDontCheckGeneration())
newScriptDontCheckGeneration()->clear();
fop->delete_(newScriptDontCheckGeneration());
- fop->delete_(maybeUnboxedLayoutDontCheckGeneration());
if (maybePreliminaryObjectsDontCheckGeneration())
maybePreliminaryObjectsDontCheckGeneration()->clear();
fop->delete_(maybePreliminaryObjectsDontCheckGeneration());
@@ -83,8 +81,6 @@ ObjectGroup::sizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf) const
size_t n = 0;
if (TypeNewScript* newScript = newScriptDontCheckGeneration())
n += newScript->sizeOfIncludingThis(mallocSizeOf);
- if (UnboxedLayout* layout = maybeUnboxedLayoutDontCheckGeneration())
- n += layout->sizeOfIncludingThis(mallocSizeOf);
return n;
}
@@ -253,7 +249,7 @@ ObjectGroup::useSingletonForAllocationSite(JSScript* script, jsbytecode* pc, con
/////////////////////////////////////////////////////////////////////
bool
-JSObject::shouldSplicePrototype(JSContext* cx)
+JSObject::shouldSplicePrototype()
{
/*
* During bootstrapping, if inference is enabled we need to make sure not
@@ -266,33 +262,36 @@ JSObject::shouldSplicePrototype(JSContext* cx)
return isSingleton();
}
-bool
-JSObject::splicePrototype(JSContext* cx, const Class* clasp, Handle<TaggedProto> proto)
+/* static */ bool
+JSObject::splicePrototype(JSContext* cx, HandleObject obj, const Class* clasp,
+ Handle<TaggedProto> proto)
{
- MOZ_ASSERT(cx->compartment() == compartment());
-
- RootedObject self(cx, this);
+ MOZ_ASSERT(cx->compartment() == obj->compartment());
/*
* For singleton groups representing only a single JSObject, the proto
* can be rearranged as needed without destroying type information for
* the old or new types.
*/
- MOZ_ASSERT(self->isSingleton());
+ MOZ_ASSERT(obj->isSingleton());
// Windows may not appear on prototype chains.
MOZ_ASSERT_IF(proto.isObject(), !IsWindow(proto.toObject()));
- if (proto.isObject() && !proto.toObject()->setDelegate(cx))
- return false;
+ if (proto.isObject()) {
+ RootedObject protoObj(cx, proto.toObject());
+ if (!JSObject::setDelegate(cx, protoObj))
+ return false;
+ }
// Force type instantiation when splicing lazy group.
- RootedObjectGroup group(cx, self->getGroup(cx));
+ RootedObjectGroup group(cx, JSObject::getGroup(cx, obj));
if (!group)
return false;
RootedObjectGroup protoGroup(cx, nullptr);
if (proto.isObject()) {
- protoGroup = proto.toObject()->getGroup(cx);
+ RootedObject protoObj(cx, proto.toObject());
+ protoGroup = JSObject::getGroup(cx, protoObj);
if (!protoGroup)
return false;
}
@@ -311,7 +310,7 @@ JSObject::makeLazyGroup(JSContext* cx, HandleObject obj)
/* De-lazification of functions can GC, so we need to do it up here. */
if (obj->is<JSFunction>() && obj->as<JSFunction>().isInterpretedLazy()) {
RootedFunction fun(cx, &obj->as<JSFunction>());
- if (!fun->getOrCreateScript(cx))
+ if (!JSFunction::getOrCreateScript(cx, fun))
return nullptr;
}
@@ -350,7 +349,7 @@ JSObject::makeLazyGroup(JSContext* cx, HandleObject obj)
JSObject::setNewGroupUnknown(JSContext* cx, const js::Class* clasp, JS::HandleObject obj)
{
ObjectGroup::setDefaultNewGroupUnknown(cx, clasp, obj);
- return obj->setFlags(cx, BaseShape::NEW_GROUP_UNKNOWN);
+ return JSObject::setFlags(cx, obj, BaseShape::NEW_GROUP_UNKNOWN);
}
/////////////////////////////////////////////////////////////////////
@@ -495,13 +494,7 @@ ObjectGroup::defaultNewGroup(ExclusiveContext* cx, const Class* clasp,
if (associated->is<JSFunction>()) {
// Canonicalize new functions to use the original one associated with its script.
- JSFunction* fun = &associated->as<JSFunction>();
- if (fun->hasScript())
- associated = fun->nonLazyScript()->functionNonDelazifying();
- else if (fun->isInterpretedLazy() && !fun->isSelfHostedBuiltin())
- associated = fun->lazyScript()->functionNonDelazifying();
- else
- associated = nullptr;
+ associated = associated->as<JSFunction>().maybeCanonicalFunction();
// If we have previously cleared the 'new' script information for this
// function, don't try to construct another one.
@@ -518,7 +511,7 @@ ObjectGroup::defaultNewGroup(ExclusiveContext* cx, const Class* clasp,
if (proto.isObject() && !proto.toObject()->isDelegate()) {
RootedObject protoObj(cx, proto.toObject());
- if (!protoObj->setDelegate(cx))
+ if (!JSObject::setDelegate(cx, protoObj))
return nullptr;
// Objects which are prototypes of one another should be singletons, so
@@ -536,8 +529,7 @@ ObjectGroup::defaultNewGroup(ExclusiveContext* cx, const Class* clasp,
if (p) {
ObjectGroup* group = p->group;
MOZ_ASSERT_IF(clasp, group->clasp() == clasp);
- MOZ_ASSERT_IF(!clasp, group->clasp() == &PlainObject::class_ ||
- group->clasp() == &UnboxedPlainObject::class_);
+ MOZ_ASSERT_IF(!clasp, group->clasp() == &PlainObject::class_);
MOZ_ASSERT(group->proto() == proto);
return group;
}
@@ -780,7 +772,7 @@ GetValueTypeForTable(const Value& v)
return type;
}
-/* static */ JSObject*
+/* static */ ArrayObject*
ObjectGroup::newArrayObject(ExclusiveContext* cx,
const Value* vp, size_t length,
NewObjectKind newKind, NewArrayKind arrayKind)
@@ -844,56 +836,13 @@ ObjectGroup::newArrayObject(ExclusiveContext* cx,
AddTypePropertyId(cx, group, nullptr, JSID_VOID, elementType);
- if (elementType != TypeSet::UnknownType()) {
- // Keep track of the initial objects we create with this type.
- // If the initial ones have a consistent shape and property types, we
- // will try to use an unboxed layout for the group.
- PreliminaryObjectArrayWithTemplate* preliminaryObjects =
- cx->new_<PreliminaryObjectArrayWithTemplate>(nullptr);
- if (!preliminaryObjects)
- return nullptr;
- group->setPreliminaryObjects(preliminaryObjects);
- }
-
if (!p.add(cx, *table, ObjectGroupCompartment::ArrayObjectKey(elementType), group))
return nullptr;
}
// The type of the elements being added will already be reflected in type
- // information, but make sure when creating an unboxed array that the
- // common element type is suitable for the unboxed representation.
+ // information.
ShouldUpdateTypes updateTypes = ShouldUpdateTypes::DontUpdate;
- if (!MaybeAnalyzeBeforeCreatingLargeArray(cx, group, vp, length))
- return nullptr;
- if (group->maybePreliminaryObjects())
- group->maybePreliminaryObjects()->maybeAnalyze(cx, group);
- if (group->maybeUnboxedLayout()) {
- switch (group->unboxedLayout().elementType()) {
- case JSVAL_TYPE_BOOLEAN:
- if (elementType != TypeSet::BooleanType())
- updateTypes = ShouldUpdateTypes::Update;
- break;
- case JSVAL_TYPE_INT32:
- if (elementType != TypeSet::Int32Type())
- updateTypes = ShouldUpdateTypes::Update;
- break;
- case JSVAL_TYPE_DOUBLE:
- if (elementType != TypeSet::Int32Type() && elementType != TypeSet::DoubleType())
- updateTypes = ShouldUpdateTypes::Update;
- break;
- case JSVAL_TYPE_STRING:
- if (elementType != TypeSet::StringType())
- updateTypes = ShouldUpdateTypes::Update;
- break;
- case JSVAL_TYPE_OBJECT:
- if (elementType != TypeSet::NullType() && !elementType.get().isObjectUnchecked())
- updateTypes = ShouldUpdateTypes::Update;
- break;
- default:
- MOZ_CRASH();
- }
- }
-
return NewCopiedArrayTryUseGroup(cx, group, vp, length, newKind, updateTypes);
}
@@ -903,49 +852,15 @@ GiveObjectGroup(ExclusiveContext* cx, JSObject* source, JSObject* target)
{
MOZ_ASSERT(source->group() != target->group());
- if (!target->is<ArrayObject>() && !target->is<UnboxedArrayObject>())
- return true;
-
- if (target->group()->maybePreliminaryObjects()) {
- bool force = IsInsideNursery(source);
- target->group()->maybePreliminaryObjects()->maybeAnalyze(cx, target->group(), force);
- }
-
- if (target->is<ArrayObject>()) {
- ObjectGroup* sourceGroup = source->group();
-
- if (source->is<UnboxedArrayObject>()) {
- Shape* shape = target->as<ArrayObject>().lastProperty();
- if (!UnboxedArrayObject::convertToNativeWithGroup(cx, source, target->group(), shape))
- return false;
- } else if (source->is<ArrayObject>()) {
- source->setGroup(target->group());
- } else {
- return true;
- }
-
- if (sourceGroup->maybePreliminaryObjects())
- sourceGroup->maybePreliminaryObjects()->unregisterObject(source);
- if (target->group()->maybePreliminaryObjects())
- target->group()->maybePreliminaryObjects()->registerNewObject(source);
-
- for (size_t i = 0; i < source->as<ArrayObject>().getDenseInitializedLength(); i++) {
- Value v = source->as<ArrayObject>().getDenseElement(i);
- AddTypePropertyId(cx, source->group(), source, JSID_VOID, v);
- }
-
+ if (!target->is<ArrayObject>() || !source->is<ArrayObject>()) {
return true;
}
- if (target->is<UnboxedArrayObject>()) {
- if (!source->is<UnboxedArrayObject>())
- return true;
- if (source->as<UnboxedArrayObject>().elementType() != JSVAL_TYPE_INT32)
- return true;
- if (target->as<UnboxedArrayObject>().elementType() != JSVAL_TYPE_DOUBLE)
- return true;
+ source->setGroup(target->group());
- return source->as<UnboxedArrayObject>().convertInt32ToDouble(cx, target->group());
+ for (size_t i = 0; i < source->as<ArrayObject>().getDenseInitializedLength(); i++) {
+ Value v = source->as<ArrayObject>().getDenseElement(i);
+ AddTypePropertyId(cx, source->group(), source, JSID_VOID, v);
}
return true;
@@ -1054,46 +969,6 @@ js::CombinePlainObjectPropertyTypes(ExclusiveContext* cx, JSObject* newObj,
}
}
}
- } else if (newObj->is<UnboxedPlainObject>()) {
- const UnboxedLayout& layout = newObj->as<UnboxedPlainObject>().layout();
- const int32_t* traceList = layout.traceList();
- if (!traceList)
- return true;
-
- uint8_t* newData = newObj->as<UnboxedPlainObject>().data();
- uint8_t* oldData = oldObj->as<UnboxedPlainObject>().data();
-
- for (; *traceList != -1; traceList++) {}
- traceList++;
- for (; *traceList != -1; traceList++) {
- JSObject* newInnerObj = *reinterpret_cast<JSObject**>(newData + *traceList);
- JSObject* oldInnerObj = *reinterpret_cast<JSObject**>(oldData + *traceList);
-
- if (!newInnerObj || !oldInnerObj || SameGroup(oldInnerObj, newInnerObj))
- continue;
-
- if (!GiveObjectGroup(cx, newInnerObj, oldInnerObj))
- return false;
-
- if (SameGroup(oldInnerObj, newInnerObj))
- continue;
-
- if (!GiveObjectGroup(cx, oldInnerObj, newInnerObj))
- return false;
-
- if (SameGroup(oldInnerObj, newInnerObj)) {
- for (size_t i = 1; i < ncompare; i++) {
- if (compare[i].isObject() && SameGroup(&compare[i].toObject(), newObj)) {
- uint8_t* otherData = compare[i].toObject().as<UnboxedPlainObject>().data();
- JSObject* otherInnerObj = *reinterpret_cast<JSObject**>(otherData + *traceList);
- if (otherInnerObj && !SameGroup(otherInnerObj, newInnerObj)) {
- if (!GiveObjectGroup(cx, otherInnerObj, newInnerObj))
- return false;
- }
- }
- }
- }
- }
}
return true;
@@ -1317,12 +1192,6 @@ ObjectGroup::newPlainObject(ExclusiveContext* cx, IdValuePair* properties, size_
RootedObjectGroup group(cx, p->value().group);
- // Watch for existing groups which now use an unboxed layout.
- if (group->maybeUnboxedLayout()) {
- MOZ_ASSERT(group->unboxedLayout().properties().length() == nproperties);
- return UnboxedPlainObject::createWithProperties(cx, group, newKind, properties);
- }
-
// Update property types according to the properties we are about to add.
// Do this before we do anything which can GC, which might move or remove
// this table entry.
@@ -1509,18 +1378,6 @@ ObjectGroup::allocationSiteGroup(JSContext* cx, JSScript* scriptArg, jsbytecode*
}
}
- if (kind == JSProto_Array &&
- (JSOp(*pc) == JSOP_NEWARRAY || IsCallPC(pc)) &&
- cx->options().unboxedArrays())
- {
- PreliminaryObjectArrayWithTemplate* preliminaryObjects =
- cx->new_<PreliminaryObjectArrayWithTemplate>(nullptr);
- if (preliminaryObjects)
- res->setPreliminaryObjects(preliminaryObjects);
- else
- cx->recoverFromOutOfMemory();
- }
-
if (!table->add(p, key, res)) {
ReportOutOfMemory(cx);
return nullptr;
diff --git a/js/src/vm/ObjectGroup.h b/js/src/vm/ObjectGroup.h
index 4e24de9f1..0b6eaee51 100644
--- a/js/src/vm/ObjectGroup.h
+++ b/js/src/vm/ObjectGroup.h
@@ -20,7 +20,6 @@
namespace js {
class TypeDescr;
-class UnboxedLayout;
class PreliminaryObjectArrayWithTemplate;
class TypeNewScript;
@@ -154,16 +153,6 @@ class ObjectGroup : public gc::TenuredCell
// For some plain objects, the addendum stores a PreliminaryObjectArrayWithTemplate.
Addendum_PreliminaryObjects,
- // When objects in this group have an unboxed representation, the
- // addendum stores an UnboxedLayout (which might have a TypeNewScript
- // as well, if the group is also constructed using 'new').
- Addendum_UnboxedLayout,
-
- // If this group is used by objects that have been converted from an
- // unboxed representation and/or have the same allocation kind as such
- // objects, the addendum points to that unboxed group.
- Addendum_OriginalUnboxedGroup,
-
// When used by typed objects, the addendum stores a TypeDescr.
Addendum_TypeDescr
};
@@ -185,7 +174,6 @@ class ObjectGroup : public gc::TenuredCell
return nullptr;
}
- TypeNewScript* anyNewScript();
void detachNewScript(bool writeBarrier, ObjectGroup* replacement);
ObjectGroupFlags flagsDontCheckGeneration() const {
@@ -225,34 +213,6 @@ class ObjectGroup : public gc::TenuredCell
maybePreliminaryObjectsDontCheckGeneration();
}
- inline UnboxedLayout* maybeUnboxedLayout();
- inline UnboxedLayout& unboxedLayout();
-
- UnboxedLayout* maybeUnboxedLayoutDontCheckGeneration() const {
- if (addendumKind() == Addendum_UnboxedLayout)
- return reinterpret_cast<UnboxedLayout*>(addendum_);
- return nullptr;
- }
-
- UnboxedLayout& unboxedLayoutDontCheckGeneration() const {
- MOZ_ASSERT(addendumKind() == Addendum_UnboxedLayout);
- return *maybeUnboxedLayoutDontCheckGeneration();
- }
-
- void setUnboxedLayout(UnboxedLayout* layout) {
- setAddendum(Addendum_UnboxedLayout, layout);
- }
-
- ObjectGroup* maybeOriginalUnboxedGroup() const {
- if (addendumKind() == Addendum_OriginalUnboxedGroup)
- return reinterpret_cast<ObjectGroup*>(addendum_);
- return nullptr;
- }
-
- void setOriginalUnboxedGroup(ObjectGroup* group) {
- setAddendum(Addendum_OriginalUnboxedGroup, group);
- }
-
TypeDescr* maybeTypeDescr() {
// Note: there is no need to sweep when accessing the type descriptor
// of an object, as it is strongly held and immutable.
@@ -313,9 +273,8 @@ class ObjectGroup : public gc::TenuredCell
* that can be read out of that property in actual JS objects. In native
* objects, property types account for plain data properties (those with a
* slot and no getter or setter hook) and dense elements. In typed objects
- * and unboxed objects, property types account for object and value
- * properties and elements in the object, and expando properties in unboxed
- * objects.
+ * property types account for object and value properties and elements in
+ * the object.
*
* For accesses on these properties, the correspondence is as follows:
*
@@ -338,10 +297,9 @@ class ObjectGroup : public gc::TenuredCell
* 2. Array lengths are special cased by the compiler and VM and are not
* reflected in property types.
*
- * 3. In typed objects (but not unboxed objects), the initial values of
- * properties (null pointers and undefined values) are not reflected in
- * the property types. These values are always possible when reading the
- * property.
+ * 3. In typed objects, the initial values of properties (null pointers and
+ * undefined values) are not reflected in the property types. These
+ * values are always possible when reading the property.
*
* We establish these by using write barriers on calls to setProperty and
* defineProperty which are on native properties, and on any jitcode which
@@ -455,12 +413,6 @@ class ObjectGroup : public gc::TenuredCell
return &flags_;
}
- // Get the bit pattern stored in an object's addendum when it has an
- // original unboxed group.
- static inline int32_t addendumOriginalUnboxedGroupValue() {
- return Addendum_OriginalUnboxedGroup << OBJECT_FLAG_ADDENDUM_SHIFT;
- }
-
inline uint32_t basePropertyCount();
private:
@@ -505,14 +457,14 @@ class ObjectGroup : public gc::TenuredCell
UnknownIndex // Make an array with an unknown element type.
};
- // Create an ArrayObject or UnboxedArrayObject with the specified elements
- // and a group specialized for the elements.
- static JSObject* newArrayObject(ExclusiveContext* cx, const Value* vp, size_t length,
- NewObjectKind newKind,
- NewArrayKind arrayKind = NewArrayKind::Normal);
+ // Create an ArrayObject with the specified elements and a group specialized
+ // for the elements.
+ static ArrayObject* newArrayObject(ExclusiveContext* cx, const Value* vp, size_t length,
+ NewObjectKind newKind,
+ NewArrayKind arrayKind = NewArrayKind::Normal);
- // Create a PlainObject or UnboxedPlainObject with the specified properties
- // and a group specialized for those properties.
+ // Create a PlainObject with the specified properties and a group specialized
+ // for those properties.
static JSObject* newPlainObject(ExclusiveContext* cx,
IdValuePair* properties, size_t nproperties,
NewObjectKind newKind);
diff --git a/js/src/vm/Opcodes.h b/js/src/vm/Opcodes.h
index 4b044c8d8..3c4d61a67 100644
--- a/js/src/vm/Opcodes.h
+++ b/js/src/vm/Opcodes.h
@@ -1281,17 +1281,7 @@
* Stack: receiver, obj, propval => obj[propval]
*/ \
macro(JSOP_GETELEM_SUPER, 125, "getelem-super", NULL, 1, 3, 1, JOF_BYTE |JOF_ELEM|JOF_LEFTASSOC) \
- /*
- * Pushes newly created array for a spread call onto the stack. This has
- * the same semantics as JSOP_NEWARRAY, but is distinguished to avoid
- * using unboxed arrays in spread calls, which would make compiling spread
- * calls in baseline more complex.
- * Category: Literals
- * Type: Array
- * Operands: uint32_t length
- * Stack: => obj
- */ \
- macro(JSOP_SPREADCALLARRAY, 126, "spreadcallarray", NULL, 5, 0, 1, JOF_UINT32) \
+ macro(JSOP_UNUSED126, 126, "unused126", NULL, 5, 0, 1, JOF_UINT32) \
\
/*
* Defines the given function on the current scope.
@@ -2292,14 +2282,23 @@
* Operands:
* Stack: =>
*/ \
- macro(JSOP_JUMPTARGET, 230, "jumptarget", NULL, 1, 0, 0, JOF_BYTE)
+ macro(JSOP_JUMPTARGET, 230, "jumptarget", NULL, 1, 0, 0, JOF_BYTE)\
+ /*
+ * Like JSOP_CALL, but tells the function that the return value is ignored.
+ * stack.
+ * Category: Statements
+ * Type: Function
+ * Operands: uint16_t argc
+ * Stack: callee, this, args[0], ..., args[argc-1] => rval
+ * nuses: (argc+2)
+ */ \
+ macro(JSOP_CALL_IGNORES_RV, 231, "call-ignores-rv", NULL, 3, -1, 1, JOF_UINT16|JOF_INVOKE|JOF_TYPESET)
/*
* In certain circumstances it may be useful to "pad out" the opcode space to
* a power of two. Use this macro to do so.
*/
#define FOR_EACH_TRAILING_UNUSED_OPCODE(macro) \
- macro(231) \
macro(232) \
macro(233) \
macro(234) \
diff --git a/js/src/vm/ProxyObject.h b/js/src/vm/ProxyObject.h
index a0a929b20..d86d72cc9 100644
--- a/js/src/vm/ProxyObject.h
+++ b/js/src/vm/ProxyObject.h
@@ -104,7 +104,7 @@ class ProxyObject : public ShapedObject
public:
static unsigned grayLinkExtraSlot(JSObject* obj);
- void renew(JSContext* cx, const BaseProxyHandler* handler, const Value& priv);
+ void renew(const BaseProxyHandler* handler, const Value& priv);
static void trace(JSTracer* trc, JSObject* obj);
diff --git a/js/src/vm/ReceiverGuard.cpp b/js/src/vm/ReceiverGuard.cpp
index 97df908c3..e95e8a208 100644
--- a/js/src/vm/ReceiverGuard.cpp
+++ b/js/src/vm/ReceiverGuard.cpp
@@ -7,7 +7,6 @@
#include "vm/ReceiverGuard.h"
#include "builtin/TypedObject.h"
-#include "vm/UnboxedObject.h"
#include "jsobjinlines.h"
using namespace js;
@@ -16,11 +15,7 @@ ReceiverGuard::ReceiverGuard(JSObject* obj)
: group(nullptr), shape(nullptr)
{
if (obj) {
- if (obj->is<UnboxedPlainObject>()) {
- group = obj->group();
- if (UnboxedExpandoObject* expando = obj->as<UnboxedPlainObject>().maybeExpando())
- shape = expando->lastProperty();
- } else if (obj->is<UnboxedArrayObject>() || obj->is<TypedObject>()) {
+ if (obj->is<TypedObject>()) {
group = obj->group();
} else {
shape = obj->maybeShape();
@@ -33,9 +28,7 @@ ReceiverGuard::ReceiverGuard(ObjectGroup* group, Shape* shape)
{
if (group) {
const Class* clasp = group->clasp();
- if (clasp == &UnboxedPlainObject::class_) {
- // Keep both group and shape.
- } else if (clasp == &UnboxedArrayObject::class_ || IsTypedObjectClass(clasp)) {
+ if (IsTypedObjectClass(clasp)) {
this->shape = nullptr;
} else {
this->group = nullptr;
@@ -46,12 +39,8 @@ ReceiverGuard::ReceiverGuard(ObjectGroup* group, Shape* shape)
/* static */ int32_t
HeapReceiverGuard::keyBits(JSObject* obj)
{
- if (obj->is<UnboxedPlainObject>()) {
- // Both the group and shape need to be guarded for unboxed plain objects.
- return obj->as<UnboxedPlainObject>().maybeExpando() ? 0 : 1;
- }
- if (obj->is<UnboxedArrayObject>() || obj->is<TypedObject>()) {
- // Only the group needs to be guarded for unboxed arrays and typed objects.
+ if (obj->is<TypedObject>()) {
+ // Only the group needs to be guarded for typed objects.
return 2;
}
// Other objects only need the shape to be guarded.
diff --git a/js/src/vm/ReceiverGuard.h b/js/src/vm/ReceiverGuard.h
index 459cc0012..c14f0d83b 100644
--- a/js/src/vm/ReceiverGuard.h
+++ b/js/src/vm/ReceiverGuard.h
@@ -28,11 +28,6 @@ namespace js {
// TypedObject: The structure of a typed object is determined by its group.
// All typed objects with the same group have the same class, prototype, and
// own properties.
-//
-// UnboxedPlainObject: The structure of an unboxed plain object is determined
-// by its group and its expando object's shape, if there is one. All unboxed
-// plain objects with the same group and expando shape have the same
-// properties except those stored in the expando's dense elements.
class HeapReceiverGuard;
class RootedReceiverGuard;
diff --git a/js/src/vm/RegExpObject.cpp b/js/src/vm/RegExpObject.cpp
index e0b44e1eb..ef97ed816 100644
--- a/js/src/vm/RegExpObject.cpp
+++ b/js/src/vm/RegExpObject.cpp
@@ -129,10 +129,10 @@ RegExpSharedReadBarrier(JSContext* cx, RegExpShared* shared)
shared->unmarkGray();
}
-bool
-RegExpObject::getShared(JSContext* cx, RegExpGuard* g)
+/* static */ bool
+RegExpObject::getShared(JSContext* cx, Handle<RegExpObject*> regexp, RegExpGuard* g)
{
- if (RegExpShared* shared = maybeShared()) {
+ if (RegExpShared* shared = regexp->maybeShared()) {
// Fetching a RegExpShared from an object requires a read
// barrier, as the shared pointer might be weak.
RegExpSharedReadBarrier(cx, shared);
@@ -141,7 +141,7 @@ RegExpObject::getShared(JSContext* cx, RegExpGuard* g)
return true;
}
- return createShared(cx, g);
+ return createShared(cx, regexp, g);
}
/* static */ bool
@@ -199,7 +199,7 @@ RegExpObject::trace(JSTracer* trc, JSObject* obj)
static JSObject*
CreateRegExpPrototype(JSContext* cx, JSProtoKey key)
{
- return cx->global()->createBlankPrototype(cx, &RegExpObject::protoClass_);
+ return GlobalObject::createBlankPrototype(cx, cx->global(), &RegExpObject::protoClass_);
}
static const ClassOps RegExpObjectClassOps = {
@@ -279,16 +279,14 @@ RegExpObject::create(ExclusiveContext* cx, HandleAtom source, RegExpFlag flags,
return regexp;
}
-bool
-RegExpObject::createShared(JSContext* cx, RegExpGuard* g)
+/* static */ bool
+RegExpObject::createShared(JSContext* cx, Handle<RegExpObject*> regexp, RegExpGuard* g)
{
- Rooted<RegExpObject*> self(cx, this);
-
- MOZ_ASSERT(!maybeShared());
- if (!cx->compartment()->regExps.get(cx, getSource(), getFlags(), g))
+ MOZ_ASSERT(!regexp->maybeShared());
+ if (!cx->compartment()->regExps.get(cx, regexp->getSource(), regexp->getFlags(), g))
return false;
- self->setShared(**g);
+ regexp->setShared(**g);
return true;
}
@@ -300,7 +298,8 @@ RegExpObject::assignInitialShape(ExclusiveContext* cx, Handle<RegExpObject*> sel
JS_STATIC_ASSERT(LAST_INDEX_SLOT == 0);
/* The lastIndex property alone is writable but non-configurable. */
- return self->addDataProperty(cx, cx->names().lastIndex, LAST_INDEX_SLOT, JSPROP_PERMANENT);
+ return NativeObject::addDataProperty(cx, self, cx->names().lastIndex, LAST_INDEX_SLOT,
+ JSPROP_PERMANENT);
}
void
@@ -891,11 +890,12 @@ RegExpShared::dumpBytecode(JSContext* cx, bool match_only, HandleLinearString in
return true;
}
-bool
-RegExpObject::dumpBytecode(JSContext* cx, bool match_only, HandleLinearString input)
+/* static */ bool
+RegExpObject::dumpBytecode(JSContext* cx, Handle<RegExpObject*> regexp,
+ bool match_only, HandleLinearString input)
{
RegExpGuard g(cx);
- if (!getShared(cx, &g))
+ if (!getShared(cx, regexp, &g))
return false;
return g.re()->dumpBytecode(cx, match_only, input);
@@ -1430,7 +1430,7 @@ js::CloneRegExpObject(JSContext* cx, JSObject* obj_)
Rooted<JSAtom*> source(cx, regex->getSource());
RegExpGuard g(cx);
- if (!regex->getShared(cx, &g))
+ if (!RegExpObject::getShared(cx, regex, &g))
return nullptr;
clone->initAndZeroLastIndex(source, g->getFlags(), cx);
diff --git a/js/src/vm/RegExpObject.h b/js/src/vm/RegExpObject.h
index dc428a973..f1ea101ed 100644
--- a/js/src/vm/RegExpObject.h
+++ b/js/src/vm/RegExpObject.h
@@ -483,7 +483,8 @@ class RegExpObject : public NativeObject
static bool isOriginalFlagGetter(JSNative native, RegExpFlag* mask);
- bool getShared(JSContext* cx, RegExpGuard* g);
+ static MOZ_MUST_USE bool getShared(JSContext* cx, Handle<RegExpObject*> regexp,
+ RegExpGuard* g);
void setShared(RegExpShared& shared) {
MOZ_ASSERT(!maybeShared());
@@ -500,7 +501,8 @@ class RegExpObject : public NativeObject
void initAndZeroLastIndex(HandleAtom source, RegExpFlag flags, ExclusiveContext* cx);
#ifdef DEBUG
- bool dumpBytecode(JSContext* cx, bool match_only, HandleLinearString input);
+ static MOZ_MUST_USE bool dumpBytecode(JSContext* cx, Handle<RegExpObject*> regexp,
+ bool match_only, HandleLinearString input);
#endif
private:
@@ -508,7 +510,8 @@ class RegExpObject : public NativeObject
* Precondition: the syntax for |source| has already been validated.
* Side effect: sets the private field.
*/
- bool createShared(JSContext* cx, RegExpGuard* g);
+ static MOZ_MUST_USE bool createShared(JSContext* cx, Handle<RegExpObject*> regexp,
+ RegExpGuard* g);
RegExpShared* maybeShared() const {
return static_cast<RegExpShared*>(NativeObject::getPrivate(PRIVATE_SLOT));
}
@@ -531,7 +534,7 @@ inline bool
RegExpToShared(JSContext* cx, HandleObject obj, RegExpGuard* g)
{
if (obj->is<RegExpObject>())
- return obj->as<RegExpObject>().getShared(cx, g);
+ return RegExpObject::getShared(cx, obj.as<RegExpObject>(), g);
return Proxy::regexp_toShared(cx, obj, g);
}
diff --git a/js/src/vm/Runtime.cpp b/js/src/vm/Runtime.cpp
index 174e23594..284a4f3d7 100644
--- a/js/src/vm/Runtime.cpp
+++ b/js/src/vm/Runtime.cpp
@@ -34,7 +34,6 @@
#include "jsnativestack.h"
#include "jsobj.h"
#include "jsscript.h"
-#include "jswatchpoint.h"
#include "jswin.h"
#include "jswrapper.h"
@@ -147,7 +146,6 @@ JSRuntime::JSRuntime(JSRuntime* parentRuntime)
updateChildRuntimeCount(parentRuntime),
#endif
interrupt_(false),
- telemetryCallback(nullptr),
handlingSegFault(false),
handlingJitInterrupt_(false),
interruptCallbackDisabled(false),
@@ -452,19 +450,6 @@ JSRuntime::destroyRuntime()
}
void
-JSRuntime::addTelemetry(int id, uint32_t sample, const char* key)
-{
- if (telemetryCallback)
- (*telemetryCallback)(id, sample, key);
-}
-
-void
-JSRuntime::setTelemetryCallback(JSRuntime* rt, JSAccumulateTelemetryDataCallback callback)
-{
- rt->telemetryCallback = callback;
-}
-
-void
JSRuntime::addSizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf, JS::RuntimeSizes* rtSizes)
{
// Several tables in the runtime enumerated below can be used off thread.
@@ -603,7 +588,7 @@ JSRuntime::requestInterrupt(InterruptMode mode)
// Atomics.wait().
fx.lock();
if (fx.isWaiting())
- fx.wake(FutexRuntime::WakeForJSInterrupt);
+ fx.notify(FutexRuntime::NotifyForJSInterrupt);
fx.unlock();
InterruptRunningJitCode(this);
}
diff --git a/js/src/vm/Runtime.h b/js/src/vm/Runtime.h
index 735adadf2..e60371e38 100644
--- a/js/src/vm/Runtime.h
+++ b/js/src/vm/Runtime.h
@@ -11,11 +11,11 @@
#include "mozilla/Attributes.h"
#include "mozilla/LinkedList.h"
#include "mozilla/MemoryReporting.h"
-#include "mozilla/PodOperations.h"
#include "mozilla/Scoped.h"
#include "mozilla/ThreadLocal.h"
#include "mozilla/Vector.h"
+#include <algorithm>
#include <setjmp.h>
#include "jsatom.h"
@@ -577,17 +577,7 @@ struct JSRuntime : public JS::shadow::Runtime,
#endif
mozilla::Atomic<uint32_t, mozilla::Relaxed> interrupt_;
-
- /* Call this to accumulate telemetry data. */
- JSAccumulateTelemetryDataCallback telemetryCallback;
public:
- // Accumulates data for Firefox telemetry. |id| is the ID of a JS_TELEMETRY_*
- // histogram. |key| provides an additional key to identify the histogram.
- // |sample| is the data to add to the histogram.
- void addTelemetry(int id, uint32_t sample, const char* key = nullptr);
-
- void setTelemetryCallback(JSRuntime* rt, JSAccumulateTelemetryDataCallback callback);
-
enum InterruptMode {
RequestInterruptUrgent,
RequestInterruptCanWait
@@ -1504,20 +1494,21 @@ PerThreadData::exclusiveThreadsPresent()
static MOZ_ALWAYS_INLINE void
MakeRangeGCSafe(Value* vec, size_t len)
{
- mozilla::PodZero(vec, len);
+ // Don't PodZero here because JS::Value is non-trivial.
+ for (size_t i = 0; i < len; i++)
+ vec[i].setDouble(+0.0);
}
static MOZ_ALWAYS_INLINE void
MakeRangeGCSafe(Value* beg, Value* end)
{
- mozilla::PodZero(beg, end - beg);
+ MakeRangeGCSafe(beg, end - beg);
}
static MOZ_ALWAYS_INLINE void
MakeRangeGCSafe(jsid* beg, jsid* end)
{
- for (jsid* id = beg; id != end; ++id)
- *id = INT_TO_JSID(0);
+ std::fill(beg, end, INT_TO_JSID(0));
}
static MOZ_ALWAYS_INLINE void
@@ -1529,13 +1520,13 @@ MakeRangeGCSafe(jsid* vec, size_t len)
static MOZ_ALWAYS_INLINE void
MakeRangeGCSafe(Shape** beg, Shape** end)
{
- mozilla::PodZero(beg, end - beg);
+ std::fill(beg, end, nullptr);
}
static MOZ_ALWAYS_INLINE void
MakeRangeGCSafe(Shape** vec, size_t len)
{
- mozilla::PodZero(vec, len);
+ MakeRangeGCSafe(vec, vec + len);
}
static MOZ_ALWAYS_INLINE void
diff --git a/js/src/vm/Scope.cpp b/js/src/vm/Scope.cpp
index 112b34586..0f80d7b69 100644
--- a/js/src/vm/Scope.cpp
+++ b/js/src/vm/Scope.cpp
@@ -191,12 +191,12 @@ template <typename ConcreteScope>
static UniquePtr<typename ConcreteScope::Data>
NewEmptyScopeData(ExclusiveContext* cx, uint32_t length = 0)
{
- uint8_t* bytes = cx->zone()->pod_calloc<uint8_t>(ConcreteScope::sizeOfData(length));
+ uint8_t* bytes = cx->zone()->pod_malloc<uint8_t>(ConcreteScope::sizeOfData(length));
if (!bytes)
ReportOutOfMemory(cx);
auto data = reinterpret_cast<typename ConcreteScope::Data*>(bytes);
if (data)
- new (data) typename ConcreteScope::Data();
+ new (data) typename ConcreteScope::Data(length);
return UniquePtr<typename ConcreteScope::Data>(data);
}
@@ -273,7 +273,7 @@ Scope::XDRSizedBindingNames(XDRState<mode>* xdr, Handle<ConcreteScope*> scope,
}
for (uint32_t i = 0; i < length; i++) {
- if (!XDRBindingName(xdr, &data->names[i])) {
+ if (!XDRBindingName(xdr, &data->trailingNames[i])) {
if (mode == XDR_DECODE) {
DeleteScopeData(data.get());
data.set(nullptr);
@@ -669,6 +669,14 @@ FunctionScope::script() const
return canonicalFunction()->nonLazyScript();
}
+/* static */ bool
+FunctionScope::isSpecialName(ExclusiveContext* cx, JSAtom* name)
+{
+ return name == cx->names().arguments ||
+ name == cx->names().dotThis ||
+ name == cx->names().dotGenerator;
+}
+
/* static */ Shape*
FunctionScope::getEmptyEnvironmentShape(ExclusiveContext* cx, bool hasParameterExprs)
{
@@ -1250,7 +1258,7 @@ BindingIter::init(LexicalScope::Data& data, uint32_t firstFrameSlot, uint8_t fla
init(0, 0, 0, 0, 0, 0,
CanHaveEnvironmentSlots | flags,
firstFrameSlot, JSSLOT_FREE(&LexicalEnvironmentObject::class_),
- data.names, data.length);
+ data.trailingNames.start(), data.length);
} else {
// imports - [0, 0)
// positional formals - [0, 0)
@@ -1262,7 +1270,7 @@ BindingIter::init(LexicalScope::Data& data, uint32_t firstFrameSlot, uint8_t fla
init(0, 0, 0, 0, 0, data.constStart,
CanHaveFrameSlots | CanHaveEnvironmentSlots | flags,
firstFrameSlot, JSSLOT_FREE(&LexicalEnvironmentObject::class_),
- data.names, data.length);
+ data.trailingNames.start(), data.length);
}
}
@@ -1283,7 +1291,7 @@ BindingIter::init(FunctionScope::Data& data, uint8_t flags)
init(0, data.nonPositionalFormalStart, data.varStart, data.varStart, data.length, data.length,
flags,
0, JSSLOT_FREE(&CallObject::class_),
- data.names, data.length);
+ data.trailingNames.start(), data.length);
}
void
@@ -1299,7 +1307,7 @@ BindingIter::init(VarScope::Data& data, uint32_t firstFrameSlot)
init(0, 0, 0, 0, data.length, data.length,
CanHaveFrameSlots | CanHaveEnvironmentSlots,
firstFrameSlot, JSSLOT_FREE(&VarEnvironmentObject::class_),
- data.names, data.length);
+ data.trailingNames.start(), data.length);
}
void
@@ -1315,7 +1323,7 @@ BindingIter::init(GlobalScope::Data& data)
init(0, 0, 0, data.varStart, data.letStart, data.constStart,
CannotHaveSlots,
UINT32_MAX, UINT32_MAX,
- data.names, data.length);
+ data.trailingNames.start(), data.length);
}
void
@@ -1343,7 +1351,7 @@ BindingIter::init(EvalScope::Data& data, bool strict)
// consts - [data.length, data.length)
init(0, 0, 0, data.varStart, data.length, data.length,
flags, firstFrameSlot, firstEnvironmentSlot,
- data.names, data.length);
+ data.trailingNames.start(), data.length);
}
void
@@ -1359,7 +1367,7 @@ BindingIter::init(ModuleScope::Data& data)
init(data.varStart, data.varStart, data.varStart, data.varStart, data.letStart, data.constStart,
CanHaveFrameSlots | CanHaveEnvironmentSlots,
0, JSSLOT_FREE(&ModuleEnvironmentObject::class_),
- data.names, data.length);
+ data.trailingNames.start(), data.length);
}
PositionalFormalParameterIter::PositionalFormalParameterIter(JSScript* script)
diff --git a/js/src/vm/Scope.h b/js/src/vm/Scope.h
index 5304d6713..4a4ae8090 100644
--- a/js/src/vm/Scope.h
+++ b/js/src/vm/Scope.h
@@ -12,6 +12,7 @@
#include "jsobj.h"
#include "jsopcode.h"
+#include "jsutil.h"
#include "gc/Heap.h"
#include "gc/Policy.h"
@@ -111,6 +112,47 @@ class BindingName
void trace(JSTracer* trc);
};
+/**
+ * The various {Global,Module,...}Scope::Data classes consist of always-present
+ * bits, then a trailing array of BindingNames. The various Data classes all
+ * end in a TrailingNamesArray that contains sized/aligned space for *one*
+ * BindingName. Data instances that contain N BindingNames, are then allocated
+ * in sizeof(Data) + (space for (N - 1) BindingNames). Because this class's
+ * |data_| field is properly sized/aligned, the N-BindingName array can start
+ * at |data_|.
+ *
+ * This is concededly a very low-level representation, but we want to only
+ * allocate once for data+bindings both, and this does so approximately as
+ * elegantly as C++ allows.
+ */
+class TrailingNamesArray
+{
+ private:
+ alignas(BindingName) unsigned char data_[sizeof(BindingName)];
+
+ private:
+ // Some versions of GCC treat it as a -Wstrict-aliasing violation (ergo a
+ // -Werror compile error) to reinterpret_cast<> |data_| to |T*|, even
+ // through |void*|. Placing the latter cast in these separate functions
+ // breaks the chain such that affected GCC versions no longer warn/error.
+ void* ptr() {
+ return data_;
+ }
+
+ public:
+ // Explicitly ensure no one accidentally allocates scope data without
+ // poisoning its trailing names.
+ TrailingNamesArray() = delete;
+
+ explicit TrailingNamesArray(size_t nameCount) {
+ if (nameCount)
+ JS_POISON(&data_, 0xCC, sizeof(BindingName) * nameCount);
+ }
+ BindingName* start() { return reinterpret_cast<BindingName*>(ptr()); }
+
+ BindingName& operator[](size_t i) { return start()[i]; }
+};
+
class BindingLocation
{
public:
@@ -337,16 +379,19 @@ class LexicalScope : public Scope
//
// lets - [0, constStart)
// consts - [constStart, length)
- uint32_t constStart;
- uint32_t length;
+ uint32_t constStart = 0;
+ uint32_t length = 0;
// Frame slots [0, nextFrameSlot) are live when this is the innermost
// scope.
- uint32_t nextFrameSlot;
+ uint32_t nextFrameSlot = 0;
// The array of tagged JSAtom* names, allocated beyond the end of the
// struct.
- BindingName names[1];
+ TrailingNamesArray trailingNames;
+
+ explicit Data(size_t nameCount) : trailingNames(nameCount) {}
+ Data() = delete;
void trace(JSTracer* trc);
};
@@ -401,10 +446,11 @@ Scope::is<LexicalScope>() const
}
//
-// Scope corresponding to a function. Holds formal parameter names and, if the
-// function parameters contain no expressions that might possibly be
-// evaluated, the function's var bindings. For example, in these functions,
-// the FunctionScope will store a/b/c bindings but not d/e/f bindings:
+// Scope corresponding to a function. Holds formal parameter names, special
+// internal names (see FunctionScope::isSpecialName), and, if the function
+// parameters contain no expressions that might possibly be evaluated, the
+// function's var bindings. For example, in these functions, the FunctionScope
+// will store a/b/c bindings but not d/e/f bindings:
//
// function f1(a, b) {
// var c;
@@ -433,11 +479,11 @@ class FunctionScope : public Scope
// The canonical function of the scope, as during a scope walk we
// often query properties of the JSFunction (e.g., is the function an
// arrow).
- GCPtrFunction canonicalFunction;
+ GCPtrFunction canonicalFunction = {};
// If parameter expressions are present, parameters act like lexical
// bindings.
- bool hasParameterExprs;
+ bool hasParameterExprs = false;
// Bindings are sorted by kind in both frames and environments.
//
@@ -452,17 +498,20 @@ class FunctionScope : public Scope
// positional formals - [0, nonPositionalFormalStart)
// other formals - [nonPositionalParamStart, varStart)
// vars - [varStart, length)
- uint16_t nonPositionalFormalStart;
- uint16_t varStart;
- uint32_t length;
+ uint16_t nonPositionalFormalStart = 0;
+ uint16_t varStart = 0;
+ uint32_t length = 0;
// Frame slots [0, nextFrameSlot) are live when this is the innermost
// scope.
- uint32_t nextFrameSlot;
+ uint32_t nextFrameSlot = 0;
// The array of tagged JSAtom* names, allocated beyond the end of the
// struct.
- BindingName names[1];
+ TrailingNamesArray trailingNames;
+
+ explicit Data(size_t nameCount) : trailingNames(nameCount) {}
+ Data() = delete;
void trace(JSTracer* trc);
};
@@ -514,6 +563,8 @@ class FunctionScope : public Scope
return data().nonPositionalFormalStart;
}
+ static bool isSpecialName(ExclusiveContext* cx, JSAtom* name);
+
static Shape* getEmptyEnvironmentShape(ExclusiveContext* cx, bool hasParameterExprs);
};
@@ -548,15 +599,18 @@ class VarScope : public Scope
struct Data
{
// All bindings are vars.
- uint32_t length;
+ uint32_t length = 0;
// Frame slots [firstFrameSlot(), nextFrameSlot) are live when this is
// the innermost scope.
- uint32_t nextFrameSlot;
+ uint32_t nextFrameSlot = 0;
// The array of tagged JSAtom* names, allocated beyond the end of the
// struct.
- BindingName names[1];
+ TrailingNamesArray trailingNames;
+
+ explicit Data(size_t nameCount) : trailingNames(nameCount) {}
+ Data() = delete;
void trace(JSTracer* trc);
};
@@ -638,14 +692,17 @@ class GlobalScope : public Scope
// vars - [varStart, letStart)
// lets - [letStart, constStart)
// consts - [constStart, length)
- uint32_t varStart;
- uint32_t letStart;
- uint32_t constStart;
- uint32_t length;
+ uint32_t varStart = 0;
+ uint32_t letStart = 0;
+ uint32_t constStart = 0;
+ uint32_t length = 0;
// The array of tagged JSAtom* names, allocated beyond the end of the
// struct.
- BindingName names[1];
+ TrailingNamesArray trailingNames;
+
+ explicit Data(size_t nameCount) : trailingNames(nameCount) {}
+ Data() = delete;
void trace(JSTracer* trc);
};
@@ -736,16 +793,19 @@ class EvalScope : public Scope
//
// top-level funcs - [0, varStart)
// vars - [varStart, length)
- uint32_t varStart;
- uint32_t length;
+ uint32_t varStart = 0;
+ uint32_t length = 0;
// Frame slots [0, nextFrameSlot) are live when this is the innermost
// scope.
- uint32_t nextFrameSlot;
+ uint32_t nextFrameSlot = 0;
// The array of tagged JSAtom* names, allocated beyond the end of the
// struct.
- BindingName names[1];
+ TrailingNamesArray trailingNames;
+
+ explicit Data(size_t nameCount) : trailingNames(nameCount) {}
+ Data() = delete;
void trace(JSTracer* trc);
};
@@ -827,7 +887,7 @@ class ModuleScope : public Scope
struct Data
{
// The module of the scope.
- GCPtr<ModuleObject*> module;
+ GCPtr<ModuleObject*> module = {};
// Bindings are sorted by kind.
//
@@ -835,18 +895,21 @@ class ModuleScope : public Scope
// vars - [varStart, letStart)
// lets - [letStart, constStart)
// consts - [constStart, length)
- uint32_t varStart;
- uint32_t letStart;
- uint32_t constStart;
- uint32_t length;
+ uint32_t varStart = 0;
+ uint32_t letStart = 0;
+ uint32_t constStart = 0;
+ uint32_t length = 0;
// Frame slots [0, nextFrameSlot) are live when this is the innermost
// scope.
- uint32_t nextFrameSlot;
+ uint32_t nextFrameSlot = 0;
// The array of tagged JSAtom* names, allocated beyond the end of the
// struct.
- BindingName names[1];
+ TrailingNamesArray trailingNames;
+
+ explicit Data(size_t nameCount) : trailingNames(nameCount) {}
+ Data() = delete;
void trace(JSTracer* trc);
};
diff --git a/js/src/vm/SelfHosting.cpp b/js/src/vm/SelfHosting.cpp
index 3e7baccad..82d2cde64 100644
--- a/js/src/vm/SelfHosting.cpp
+++ b/js/src/vm/SelfHosting.cpp
@@ -477,7 +477,7 @@ intrinsic_FinishBoundFunctionInit(JSContext* cx, unsigned argc, Value* vp)
// Try to avoid invoking the resolve hook.
if (targetObj->is<JSFunction>() && !targetObj->as<JSFunction>().hasResolvedLength()) {
RootedValue targetLength(cx);
- if (!targetObj->as<JSFunction>().getUnresolvedLength(cx, &targetLength))
+ if (!JSFunction::getUnresolvedLength(cx, targetObj.as<JSFunction>(), &targetLength))
return false;
length = Max(0.0, targetLength.toNumber() - argCount);
@@ -1873,23 +1873,6 @@ intrinsic_RuntimeDefaultLocale(JSContext* cx, unsigned argc, Value* vp)
}
static bool
-intrinsic_AddContentTelemetry(JSContext* cx, unsigned argc, Value* vp)
-{
- CallArgs args = CallArgsFromVp(argc, vp);
- MOZ_ASSERT(args.length() == 2);
-
- int id = args[0].toInt32();
- MOZ_ASSERT(id < JS_TELEMETRY_END);
- MOZ_ASSERT(id >= 0);
-
- if (!cx->compartment()->isProbablySystemOrAddonCode())
- cx->runtime()->addTelemetry(id, args[1].toInt32());
-
- args.rval().setUndefined();
- return true;
-}
-
-static bool
intrinsic_ConstructFunction(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
@@ -2140,7 +2123,7 @@ static const JSFunctionSpec intrinsic_functions[] = {
JS_INLINABLE_FN("std_Array_slice", array_slice, 2,0, ArraySlice),
JS_FN("std_Array_sort", array_sort, 1,0),
JS_FN("std_Array_reverse", array_reverse, 0,0),
- JS_INLINABLE_FN("std_Array_splice", array_splice, 2,0, ArraySplice),
+ JS_FNINFO("std_Array_splice", array_splice, &array_splice_info, 2,0),
JS_FN("std_Date_now", date_now, 0,0),
JS_FN("std_Date_valueOf", date_valueOf, 0,0),
@@ -2186,8 +2169,10 @@ static const JSFunctionSpec intrinsic_functions[] = {
JS_INLINABLE_FN("std_String_charAt", str_charAt, 1,0, StringCharAt),
JS_FN("std_String_endsWith", str_endsWith, 1,0),
JS_FN("std_String_trim", str_trim, 0,0),
- JS_FN("std_String_trimLeft", str_trimLeft, 0,0),
- JS_FN("std_String_trimRight", str_trimRight, 0,0),
+ JS_FN("std_String_trimLeft", str_trimStart, 0,0),
+ JS_FN("std_String_trimStart", str_trimStart, 0,0),
+ JS_FN("std_String_trimRight", str_trimEnd, 0,0),
+ JS_FN("std_String_trimEnd", str_trimEnd, 0,0),
JS_FN("std_String_toLocaleLowerCase", str_toLocaleLowerCase, 0,0),
JS_FN("std_String_toLocaleUpperCase", str_toLocaleUpperCase, 0,0),
JS_FN("std_String_normalize", str_normalize, 0,0),
@@ -2242,7 +2227,6 @@ static const JSFunctionSpec intrinsic_functions[] = {
JS_FN("DecompileArg", intrinsic_DecompileArg, 2,0),
JS_FN("_FinishBoundFunctionInit", intrinsic_FinishBoundFunctionInit, 3,0),
JS_FN("RuntimeDefaultLocale", intrinsic_RuntimeDefaultLocale, 0,0),
- JS_FN("AddContentTelemetry", intrinsic_AddContentTelemetry, 2,0),
JS_INLINABLE_FN("_IsConstructing", intrinsic_IsConstructing, 0,0,
IntrinsicIsConstructing),
@@ -2984,7 +2968,7 @@ JSRuntime::cloneSelfHostedFunctionScript(JSContext* cx, HandlePropertyName name,
MOZ_ASSERT(targetFun->isInterpretedLazy());
MOZ_ASSERT(targetFun->isSelfHostedBuiltin());
- RootedScript sourceScript(cx, sourceFun->getOrCreateScript(cx));
+ RootedScript sourceScript(cx, JSFunction::getOrCreateScript(cx, sourceFun));
if (!sourceScript)
return false;
diff --git a/js/src/vm/Shape.cpp b/js/src/vm/Shape.cpp
index 306a2c540..8fe2145e5 100644
--- a/js/src/vm/Shape.cpp
+++ b/js/src/vm/Shape.cpp
@@ -460,15 +460,13 @@ NativeObject::getChildProperty(ExclusiveContext* cx,
return shape;
}
-bool
-js::NativeObject::toDictionaryMode(ExclusiveContext* cx)
+/* static */ bool
+js::NativeObject::toDictionaryMode(ExclusiveContext* cx, HandleNativeObject obj)
{
- MOZ_ASSERT(!inDictionaryMode());
- MOZ_ASSERT(cx->isInsideCurrentCompartment(this));
-
- uint32_t span = slotSpan();
+ MOZ_ASSERT(!obj->inDictionaryMode());
+ MOZ_ASSERT(cx->isInsideCurrentCompartment(obj));
- Rooted<NativeObject*> self(cx, this);
+ uint32_t span = obj->slotSpan();
// Clone the shapes into a new dictionary list. Don't update the last
// property of this object until done, otherwise a GC triggered while
@@ -476,7 +474,7 @@ js::NativeObject::toDictionaryMode(ExclusiveContext* cx)
RootedShape root(cx);
RootedShape dictionaryShape(cx);
- RootedShape shape(cx, lastProperty());
+ RootedShape shape(cx, obj->lastProperty());
while (shape) {
MOZ_ASSERT(!shape->inDictionary());
@@ -488,7 +486,7 @@ js::NativeObject::toDictionaryMode(ExclusiveContext* cx)
GCPtrShape* listp = dictionaryShape ? &dictionaryShape->parent : nullptr;
StackShape child(shape);
- dprop->initDictionaryShape(child, self->numFixedSlots(), listp);
+ dprop->initDictionaryShape(child, obj->numFixedSlots(), listp);
if (!dictionaryShape)
root = dprop;
@@ -503,18 +501,18 @@ js::NativeObject::toDictionaryMode(ExclusiveContext* cx)
return false;
}
- if (IsInsideNursery(self) &&
- !cx->asJSContext()->gc.nursery.queueDictionaryModeObjectToSweep(self))
+ if (IsInsideNursery(obj) &&
+ !cx->asJSContext()->gc.nursery.queueDictionaryModeObjectToSweep(obj))
{
ReportOutOfMemory(cx);
return false;
}
MOZ_ASSERT(root->listp == nullptr);
- root->listp = &self->shape_;
- self->shape_ = root;
+ root->listp = &obj->shape_;
+ obj->shape_ = root;
- MOZ_ASSERT(self->inDictionaryMode());
+ MOZ_ASSERT(obj->inDictionaryMode());
root->base()->setSlotSpan(span);
return true;
@@ -534,7 +532,7 @@ NativeObject::addProperty(ExclusiveContext* cx, HandleNativeObject obj, HandleId
return nullptr;
if (!extensible) {
if (cx->isJSContext())
- obj->reportNotExtensible(cx->asJSContext());
+ JSObject::reportNotExtensible(cx->asJSContext(), obj);
return nullptr;
}
@@ -592,7 +590,7 @@ NativeObject::addPropertyInternal(ExclusiveContext* cx,
if (allowDictionary &&
(!stableSlot || ShouldConvertToDictionary(obj)))
{
- if (!obj->toDictionaryMode(cx))
+ if (!toDictionaryMode(cx, obj))
return nullptr;
table = obj->lastProperty()->maybeTable(keep);
entry = &table->search<MaybeAdding::Adding>(id, keep);
@@ -727,7 +725,7 @@ CheckCanChangeAttrs(ExclusiveContext* cx, JSObject* obj, Shape* shape, unsigned*
(*attrsp & (JSPROP_GETTER | JSPROP_SETTER | JSPROP_SHARED)))
{
if (cx->isJSContext())
- obj->reportNotConfigurable(cx->asJSContext(), shape->propid());
+ JSObject::reportNotConfigurable(cx->asJSContext(), shape->propid());
return false;
}
@@ -785,7 +783,7 @@ NativeObject::putProperty(ExclusiveContext* cx, HandleNativeObject obj, HandleId
if (!extensible) {
if (cx->isJSContext())
- obj->reportNotExtensible(cx->asJSContext());
+ JSObject::reportNotExtensible(cx->asJSContext(), obj);
return nullptr;
}
@@ -834,7 +832,7 @@ NativeObject::putProperty(ExclusiveContext* cx, HandleNativeObject obj, HandleId
* addPropertyInternal because a failure under add would lose data.
*/
if (shape != obj->lastProperty() && !obj->inDictionaryMode()) {
- if (!obj->toDictionaryMode(cx))
+ if (!toDictionaryMode(cx, obj))
return nullptr;
ShapeTable* table = obj->lastProperty()->maybeTable(keep);
MOZ_ASSERT(table);
@@ -853,10 +851,11 @@ NativeObject::putProperty(ExclusiveContext* cx, HandleNativeObject obj, HandleId
*/
bool updateLast = (shape == obj->lastProperty());
bool accessorShape = getter || setter || (attrs & (JSPROP_GETTER | JSPROP_SETTER));
- shape = obj->replaceWithNewEquivalentShape(cx, shape, nullptr, accessorShape);
+ shape = NativeObject::replaceWithNewEquivalentShape(cx, obj, shape, nullptr,
+ accessorShape);
if (!shape)
return nullptr;
- if (!updateLast && !obj->generateOwnShape(cx))
+ if (!updateLast && !NativeObject::generateOwnShape(cx, obj))
return nullptr;
/*
@@ -968,16 +967,15 @@ NativeObject::changeProperty(ExclusiveContext* cx, HandleNativeObject obj, Handl
return newShape;
}
-bool
-NativeObject::removeProperty(ExclusiveContext* cx, jsid id_)
+/* static */ bool
+NativeObject::removeProperty(ExclusiveContext* cx, HandleNativeObject obj, jsid id_)
{
RootedId id(cx, id_);
- RootedNativeObject self(cx, this);
AutoKeepShapeTables keep(cx);
ShapeTable::Entry* entry;
RootedShape shape(cx);
- if (!Shape::search(cx, lastProperty(), id, keep, shape.address(), &entry))
+ if (!Shape::search(cx, obj->lastProperty(), id, keep, shape.address(), &entry))
return false;
if (!shape)
@@ -987,10 +985,10 @@ NativeObject::removeProperty(ExclusiveContext* cx, jsid id_)
* If shape is not the last property added, or the last property cannot
* be removed, switch to dictionary mode.
*/
- if (!self->inDictionaryMode() && (shape != self->lastProperty() || !self->canRemoveLastProperty())) {
- if (!self->toDictionaryMode(cx))
+ if (!obj->inDictionaryMode() && (shape != obj->lastProperty() || !obj->canRemoveLastProperty())) {
+ if (!toDictionaryMode(cx, obj))
return false;
- ShapeTable* table = self->lastProperty()->maybeTable(keep);
+ ShapeTable* table = obj->lastProperty()->maybeTable(keep);
MOZ_ASSERT(table);
entry = &table->search<MaybeAdding::NotAdding>(shape->propid(), keep);
shape = entry->shape();
@@ -1004,21 +1002,21 @@ NativeObject::removeProperty(ExclusiveContext* cx, jsid id_)
* the object or table, so the remaining removal is infallible.
*/
RootedShape spare(cx);
- if (self->inDictionaryMode()) {
+ if (obj->inDictionaryMode()) {
/* For simplicity, always allocate an accessor shape for now. */
spare = Allocate<AccessorShape>(cx);
if (!spare)
return false;
new (spare) Shape(shape->base()->unowned(), 0);
- if (shape == self->lastProperty()) {
+ if (shape == obj->lastProperty()) {
/*
* Get an up to date unowned base shape for the new last property
* when removing the dictionary's last property. Information in
* base shapes for non-last properties may be out of sync with the
* object's state.
*/
- RootedShape previous(cx, self->lastProperty()->parent);
- StackBaseShape base(self->lastProperty()->base());
+ RootedShape previous(cx, obj->lastProperty()->parent);
+ StackBaseShape base(obj->lastProperty()->base());
BaseShape* nbase = BaseShape::getUnowned(cx, base);
if (!nbase)
return false;
@@ -1028,7 +1026,7 @@ NativeObject::removeProperty(ExclusiveContext* cx, jsid id_)
/* If shape has a slot, free its slot number. */
if (shape->hasSlot()) {
- self->freeSlot(cx, shape->slot());
+ obj->freeSlot(cx, shape->slot());
if (cx->isJSContext())
++cx->asJSContext()->runtime()->propertyRemovals;
}
@@ -1038,8 +1036,8 @@ NativeObject::removeProperty(ExclusiveContext* cx, jsid id_)
* doubly linked list, hashed by lastProperty()->table. So we can edit the
* list and hash in place.
*/
- if (self->inDictionaryMode()) {
- ShapeTable* table = self->lastProperty()->maybeTable(keep);
+ if (obj->inDictionaryMode()) {
+ ShapeTable* table = obj->lastProperty()->maybeTable(keep);
MOZ_ASSERT(table);
if (entry->hadCollision()) {
@@ -1056,23 +1054,23 @@ NativeObject::removeProperty(ExclusiveContext* cx, jsid id_)
* checks not to alter significantly the complexity of the
* delete in debug builds, see bug 534493.
*/
- Shape* aprop = self->lastProperty();
+ Shape* aprop = obj->lastProperty();
for (int n = 50; --n >= 0 && aprop->parent; aprop = aprop->parent)
- MOZ_ASSERT_IF(aprop != shape, self->contains(cx, aprop));
+ MOZ_ASSERT_IF(aprop != shape, obj->contains(cx, aprop));
#endif
}
{
/* Remove shape from its non-circular doubly linked list. */
- Shape* oldLastProp = self->lastProperty();
- shape->removeFromDictionary(self);
+ Shape* oldLastProp = obj->lastProperty();
+ shape->removeFromDictionary(obj);
/* Hand off table from the old to new last property. */
- oldLastProp->handoffTableTo(self->lastProperty());
+ oldLastProp->handoffTableTo(obj->lastProperty());
}
/* Generate a new shape for the object, infallibly. */
- JS_ALWAYS_TRUE(self->generateOwnShape(cx, spare));
+ JS_ALWAYS_TRUE(NativeObject::generateOwnShape(cx, obj, spare));
/* Consider shrinking table if its load factor is <= .25. */
uint32_t size = table->capacity();
@@ -1085,11 +1083,11 @@ NativeObject::removeProperty(ExclusiveContext* cx, jsid id_)
* lazily make via a later hashify the exact table for the new property
* lineage.
*/
- MOZ_ASSERT(shape == self->lastProperty());
- self->removeLastProperty(cx);
+ MOZ_ASSERT(shape == obj->lastProperty());
+ obj->removeLastProperty(cx);
}
- self->checkShapeConsistency();
+ obj->checkShapeConsistency();
return true;
}
@@ -1133,35 +1131,30 @@ NativeObject::rollbackProperties(ExclusiveContext* cx, HandleNativeObject obj, u
if (slot < slotSpan)
break;
}
- if (!obj->removeProperty(cx, obj->lastProperty()->propid()))
+ if (!NativeObject::removeProperty(cx, obj, obj->lastProperty()->propid()))
return false;
}
return true;
}
-Shape*
-NativeObject::replaceWithNewEquivalentShape(ExclusiveContext* cx, Shape* oldShape, Shape* newShape,
- bool accessorShape)
+/* static */ Shape*
+NativeObject::replaceWithNewEquivalentShape(ExclusiveContext* cx, HandleNativeObject obj,
+ Shape* oldShape, Shape* newShape, bool accessorShape)
{
MOZ_ASSERT(cx->isInsideCurrentZone(oldShape));
- MOZ_ASSERT_IF(oldShape != lastProperty(),
- inDictionaryMode() && lookup(cx, oldShape->propidRef()) == oldShape);
-
- NativeObject* self = this;
+ MOZ_ASSERT_IF(oldShape != obj->lastProperty(),
+ obj->inDictionaryMode() && obj->lookup(cx, oldShape->propidRef()) == oldShape);
- if (!inDictionaryMode()) {
- RootedNativeObject selfRoot(cx, self);
+ if (!obj->inDictionaryMode()) {
RootedShape newRoot(cx, newShape);
- if (!toDictionaryMode(cx))
+ if (!toDictionaryMode(cx, obj))
return nullptr;
- oldShape = selfRoot->lastProperty();
- self = selfRoot;
+ oldShape = obj->lastProperty();
newShape = newRoot;
}
if (!newShape) {
- RootedNativeObject selfRoot(cx, self);
RootedShape oldRoot(cx, oldShape);
newShape = (oldShape->isAccessorShape() || accessorShape)
? Allocate<AccessorShape>(cx)
@@ -1169,12 +1162,11 @@ NativeObject::replaceWithNewEquivalentShape(ExclusiveContext* cx, Shape* oldShap
if (!newShape)
return nullptr;
new (newShape) Shape(oldRoot->base()->unowned(), 0);
- self = selfRoot;
oldShape = oldRoot;
}
AutoCheckCannotGC nogc;
- ShapeTable* table = self->lastProperty()->ensureTableForDictionary(cx, nogc);
+ ShapeTable* table = obj->lastProperty()->ensureTableForDictionary(cx, nogc);
if (!table)
return nullptr;
@@ -1187,12 +1179,12 @@ NativeObject::replaceWithNewEquivalentShape(ExclusiveContext* cx, Shape* oldShap
* enumeration order (see bug 601399).
*/
StackShape nshape(oldShape);
- newShape->initDictionaryShape(nshape, self->numFixedSlots(), oldShape->listp);
+ newShape->initDictionaryShape(nshape, obj->numFixedSlots(), oldShape->listp);
MOZ_ASSERT(newShape->parent == oldShape);
- oldShape->removeFromDictionary(self);
+ oldShape->removeFromDictionary(obj);
- if (newShape == self->lastProperty())
+ if (newShape == obj->lastProperty())
oldShape->handoffTableTo(newShape);
if (entry)
@@ -1200,63 +1192,63 @@ NativeObject::replaceWithNewEquivalentShape(ExclusiveContext* cx, Shape* oldShap
return newShape;
}
-bool
-NativeObject::shadowingShapeChange(ExclusiveContext* cx, const Shape& shape)
+/* static */ bool
+NativeObject::shadowingShapeChange(ExclusiveContext* cx, HandleNativeObject obj, const Shape& shape)
{
- return generateOwnShape(cx);
+ return generateOwnShape(cx, obj);
}
-bool
-JSObject::setFlags(ExclusiveContext* cx, BaseShape::Flag flags, GenerateShape generateShape)
+/* static */ bool
+JSObject::setFlags(ExclusiveContext* cx, HandleObject obj, BaseShape::Flag flags,
+ GenerateShape generateShape)
{
- if (hasAllFlags(flags))
+ if (obj->hasAllFlags(flags))
return true;
- RootedObject self(cx, this);
-
- Shape* existingShape = self->ensureShape(cx);
+ Shape* existingShape = obj->ensureShape(cx);
if (!existingShape)
return false;
- if (isNative() && as<NativeObject>().inDictionaryMode()) {
- if (generateShape == GENERATE_SHAPE && !as<NativeObject>().generateOwnShape(cx))
- return false;
- StackBaseShape base(self->as<NativeObject>().lastProperty());
+ if (obj->isNative() && obj->as<NativeObject>().inDictionaryMode()) {
+ if (generateShape == GENERATE_SHAPE) {
+ if (!NativeObject::generateOwnShape(cx, obj.as<NativeObject>()))
+ return false;
+ }
+ StackBaseShape base(obj->as<NativeObject>().lastProperty());
base.flags |= flags;
UnownedBaseShape* nbase = BaseShape::getUnowned(cx, base);
if (!nbase)
return false;
- self->as<NativeObject>().lastProperty()->base()->adoptUnowned(nbase);
+ obj->as<NativeObject>().lastProperty()->base()->adoptUnowned(nbase);
return true;
}
- Shape* newShape = Shape::setObjectFlags(cx, flags, self->taggedProto(), existingShape);
+ Shape* newShape = Shape::setObjectFlags(cx, flags, obj->taggedProto(), existingShape);
if (!newShape)
return false;
- // The success of the |JSObject::ensureShape| call above means that |self|
+ // The success of the |JSObject::ensureShape| call above means that |obj|
// can be assumed to have a shape.
- self->as<ShapedObject>().setShape(newShape);
+ obj->as<ShapedObject>().setShape(newShape);
return true;
}
-bool
-NativeObject::clearFlag(ExclusiveContext* cx, BaseShape::Flag flag)
+/* static */ bool
+NativeObject::clearFlag(ExclusiveContext* cx, HandleNativeObject obj, BaseShape::Flag flag)
{
- MOZ_ASSERT(inDictionaryMode());
+ MOZ_ASSERT(obj->inDictionaryMode());
- RootedNativeObject self(cx, &as<NativeObject>());
- MOZ_ASSERT(self->lastProperty()->getObjectFlags() & flag);
+ MOZ_ASSERT(obj->lastProperty()->getObjectFlags() & flag);
- StackBaseShape base(self->lastProperty());
+ StackBaseShape base(obj->lastProperty());
base.flags &= ~flag;
UnownedBaseShape* nbase = BaseShape::getUnowned(cx, base);
if (!nbase)
return false;
- self->lastProperty()->base()->adoptUnowned(nbase);
+ obj->lastProperty()->base()->adoptUnowned(nbase);
return true;
}
diff --git a/js/src/vm/Shape.h b/js/src/vm/Shape.h
index 978798aaa..85bc044a5 100644
--- a/js/src/vm/Shape.h
+++ b/js/src/vm/Shape.h
@@ -387,7 +387,7 @@ class BaseShape : public gc::TenuredCell
INDEXED = 0x20,
/* (0x40 is unused) */
HAD_ELEMENTS_ACCESS = 0x80,
- WATCHED = 0x100,
+ /* (0x100 is unused) */
ITERATED_SINGLETON = 0x200,
NEW_GROUP_UNKNOWN = 0x400,
UNCACHEABLE_PROTO = 0x800,
@@ -905,9 +905,6 @@ class Shape : public gc::TenuredCell
setter() == rawSetter;
}
- bool set(JSContext* cx, HandleNativeObject obj, HandleObject receiver, MutableHandleValue vp,
- ObjectOpResult& result);
-
BaseShape* base() const { return base_.get(); }
bool hasSlot() const {
diff --git a/js/src/vm/SharedArrayObject.cpp b/js/src/vm/SharedArrayObject.cpp
index c69306aac..0dff41201 100644
--- a/js/src/vm/SharedArrayObject.cpp
+++ b/js/src/vm/SharedArrayObject.cpp
@@ -366,7 +366,8 @@ static const Class SharedArrayBufferObjectProtoClass = {
static JSObject*
CreateSharedArrayBufferPrototype(JSContext* cx, JSProtoKey key)
{
- return cx->global()->createBlankPrototype(cx, &SharedArrayBufferObjectProtoClass);
+ return GlobalObject::createBlankPrototype(cx, cx->global(),
+ &SharedArrayBufferObjectProtoClass);
}
static const ClassOps SharedArrayBufferObjectClassOps = {
diff --git a/js/src/vm/Stack-inl.h b/js/src/vm/Stack-inl.h
index a51c0aa14..11a19d175 100644
--- a/js/src/vm/Stack-inl.h
+++ b/js/src/vm/Stack-inl.h
@@ -306,7 +306,7 @@ InterpreterStack::pushInlineFrame(JSContext* cx, InterpreterRegs& regs, const Ca
MOZ_ASSERT(regs.sp == args.end());
MOZ_ASSERT(callee->nonLazyScript() == script);
- script->ensureNonLazyCanonicalFunction(cx);
+ script->ensureNonLazyCanonicalFunction();
InterpreterFrame* prev = regs.fp();
jsbytecode* prevpc = regs.pc;
@@ -336,13 +336,13 @@ InterpreterStack::resumeGeneratorCallFrame(JSContext* cx, InterpreterRegs& regs,
HandleObject envChain)
{
MOZ_ASSERT(callee->isGenerator());
- RootedScript script(cx, callee->getOrCreateScript(cx));
+ RootedScript script(cx, JSFunction::getOrCreateScript(cx, callee));
InterpreterFrame* prev = regs.fp();
jsbytecode* prevpc = regs.pc;
Value* prevsp = regs.sp;
MOZ_ASSERT(prev);
- script->ensureNonLazyCanonicalFunction(cx);
+ script->ensureNonLazyCanonicalFunction();
LifoAlloc::Mark mark = allocator_.mark();
diff --git a/js/src/vm/Stack.cpp b/js/src/vm/Stack.cpp
index 87e95c893..c5f2cf5f3 100644
--- a/js/src/vm/Stack.cpp
+++ b/js/src/vm/Stack.cpp
@@ -82,7 +82,7 @@ InterpreterFrame::isNonGlobalEvalFrame() const
return isEvalFrame() && script()->bodyScope()->as<EvalScope>().isNonGlobal();
}
-JSObject*
+ArrayObject*
InterpreterFrame::createRestParameter(JSContext* cx)
{
MOZ_ASSERT(script()->hasRest());
diff --git a/js/src/vm/Stack.h b/js/src/vm/Stack.h
index 552738d89..23e621344 100644
--- a/js/src/vm/Stack.h
+++ b/js/src/vm/Stack.h
@@ -523,7 +523,7 @@ class InterpreterFrame
ArgumentsObject& argsObj() const;
void initArgsObj(ArgumentsObject& argsobj);
- JSObject* createRestParameter(JSContext* cx);
+ ArrayObject* createRestParameter(JSContext* cx);
/*
* Environment chain
@@ -1006,6 +1006,17 @@ class InvokeArgs : public detail::GenericArgsBase<NO_CONSTRUCT>
explicit InvokeArgs(JSContext* cx) : Base(cx) {}
};
+/** Function call args of statically-unknown count. */
+class InvokeArgsMaybeIgnoresReturnValue : public detail::GenericArgsBase<NO_CONSTRUCT>
+{
+ using Base = detail::GenericArgsBase<NO_CONSTRUCT>;
+
+ public:
+ explicit InvokeArgsMaybeIgnoresReturnValue(JSContext* cx, bool ignoresReturnValue) : Base(cx) {
+ this->ignoresReturnValue_ = ignoresReturnValue;
+ }
+};
+
/** Function call args of statically-known count. */
template <size_t N>
class FixedInvokeArgs : public detail::FixedArgsBase<NO_CONSTRUCT, N>
diff --git a/js/src/vm/Stopwatch.cpp b/js/src/vm/Stopwatch.cpp
index 28632c2a1..684846f00 100644
--- a/js/src/vm/Stopwatch.cpp
+++ b/js/src/vm/Stopwatch.cpp
@@ -20,6 +20,7 @@
#include "gc/Zone.h"
#include "vm/Runtime.h"
+
namespace js {
bool
@@ -136,6 +137,9 @@ PerformanceMonitoring::start()
bool
PerformanceMonitoring::commit()
{
+ // Maximal initialization size, in elements for the vector of groups.
+ static const size_t MAX_GROUPS_INIT_CAPACITY = 1024;
+
#if !defined(MOZ_HAVE_RDTSC)
// The AutoStopwatch is only executed if `MOZ_HAVE_RDTSC`.
return false;
@@ -152,13 +156,24 @@ PerformanceMonitoring::commit()
return true;
}
- PerformanceGroupVector recentGroups;
- recentGroups_.swap(recentGroups);
+ // The move operation is generally constant time, unless
+ // `recentGroups_.length()` is very small, in which case
+ // it's fast just because it's small.
+ PerformanceGroupVector recentGroups(Move(recentGroups_));
+ recentGroups_ = PerformanceGroupVector(); // Reconstruct after `Move`.
bool success = true;
if (stopwatchCommitCallback)
success = stopwatchCommitCallback(iteration_, recentGroups, stopwatchCommitClosure);
+ // Heuristic: we expect to have roughly the same number of groups as in
+ // the previous iteration.
+ const size_t capacity = recentGroups.capacity() < MAX_GROUPS_INIT_CAPACITY ?
+ recentGroups.capacity() :
+ MAX_GROUPS_INIT_CAPACITY;
+ success = recentGroups_.reserve(capacity)
+ && success;
+
// Reset immediately, to make sure that we're not hit by the end
// of a nested event loop (which would cause `commit` to be called
// twice in succession).
@@ -227,7 +242,7 @@ AutoStopwatch::AutoStopwatch(JSContext* cx MOZ_GUARD_OBJECT_NOTIFIER_PARAM_IN_IM
MOZ_GUARD_OBJECT_NOTIFIER_INIT;
JSCompartment* compartment = cx_->compartment();
- if (compartment->scheduledForDestruction)
+ if (MOZ_UNLIKELY(compartment->scheduledForDestruction))
return;
JSRuntime* runtime = cx_->runtime();
@@ -266,11 +281,11 @@ AutoStopwatch::~AutoStopwatch()
}
JSCompartment* compartment = cx_->compartment();
- if (compartment->scheduledForDestruction)
+ if (MOZ_UNLIKELY(compartment->scheduledForDestruction))
return;
JSRuntime* runtime = cx_->runtime();
- if (iteration_ != runtime->performanceMonitoring.iteration()) {
+ if (MOZ_UNLIKELY(iteration_ != runtime->performanceMonitoring.iteration())) {
// We have entered a nested event loop at some point.
// Any information we may have is obsolete.
return;
@@ -319,11 +334,6 @@ AutoStopwatch::exit()
const uint64_t cyclesEnd = getCycles(runtime);
cyclesDelta = cyclesEnd - cyclesStart_; // Always >= 0 by definition of `getCycles`.
}
-#if WINVER >= 0x600
- updateTelemetry(cpuStart_, cpuEnd);
-#elif defined(__linux__)
- updateTelemetry(cpuStart_, cpuEnd);
-#endif // WINVER >= 0x600 || _linux__
}
uint64_t CPOWTimeDelta = 0;
@@ -335,17 +345,6 @@ AutoStopwatch::exit()
return addToGroups(cyclesDelta, CPOWTimeDelta);
}
-void
-AutoStopwatch::updateTelemetry(const cpuid_t& cpuStart_, const cpuid_t& cpuEnd)
-{
- JSRuntime* runtime = cx_->runtime();
-
- if (isSameCPU(cpuStart_, cpuEnd))
- runtime->performanceMonitoring.testCpuRescheduling.stayed += 1;
- else
- runtime->performanceMonitoring.testCpuRescheduling.moved += 1;
-}
-
PerformanceGroup*
AutoStopwatch::acquireGroup(PerformanceGroup* group)
{
@@ -638,13 +637,6 @@ GetStopwatchIsMonitoringCPOW(JSContext* cx)
}
JS_PUBLIC_API(void)
-GetPerfMonitoringTestCpuRescheduling(JSContext* cx, uint64_t* stayed, uint64_t* moved)
-{
- *stayed = cx->performanceMonitoring.testCpuRescheduling.stayed;
- *moved = cx->performanceMonitoring.testCpuRescheduling.moved;
-}
-
-JS_PUBLIC_API(void)
AddCPOWPerformanceDelta(JSContext* cx, uint64_t delta)
{
cx->performanceMonitoring.totalCPOWTime += delta;
diff --git a/js/src/vm/Stopwatch.h b/js/src/vm/Stopwatch.h
index 38a3eb801..d7f299594 100644
--- a/js/src/vm/Stopwatch.h
+++ b/js/src/vm/Stopwatch.h
@@ -217,33 +217,6 @@ struct PerformanceMonitoring {
*/
uint64_t monotonicReadTimestampCounter();
- /**
- * Data extracted by the AutoStopwatch to determine how often
- * we reschedule the process to a different CPU during the
- * execution of JS.
- *
- * Warning: These values are incremented *only* on platforms
- * that offer a syscall/libcall to check on which CPU a
- * process is currently executed.
- */
- struct TestCpuRescheduling
- {
- // Incremented once we have finished executing code
- // in a group, if the CPU on which we started
- // execution is the same as the CPU on which
- // we finished.
- uint64_t stayed;
- // Incremented once we have finished executing code
- // in a group, if the CPU on which we started
- // execution is different from the CPU on which
- // we finished.
- uint64_t moved;
- TestCpuRescheduling()
- : stayed(0),
- moved(0)
- { }
- };
- TestCpuRescheduling testCpuRescheduling;
private:
PerformanceMonitoring(const PerformanceMonitoring&) = delete;
PerformanceMonitoring& operator=(const PerformanceMonitoring&) = delete;
@@ -375,9 +348,6 @@ class AutoStopwatch final {
// Add recent changes to a single group. Mark the group as changed recently.
bool addToGroup(JSRuntime* runtime, uint64_t cyclesDelta, uint64_t CPOWTimeDelta, PerformanceGroup* group);
- // Update telemetry statistics.
- void updateTelemetry(const cpuid_t& a, const cpuid_t& b);
-
// Perform a subtraction for a quantity that should be monotonic
// but is not guaranteed to be so.
//
diff --git a/js/src/vm/String.h b/js/src/vm/String.h
index 1a0c58575..514e2c205 100644
--- a/js/src/vm/String.h
+++ b/js/src/vm/String.h
@@ -8,7 +8,6 @@
#define vm_String_h
#include "mozilla/MemoryReporting.h"
-#include "mozilla/PodOperations.h"
#include "mozilla/Range.h"
#include "jsapi.h"
@@ -1087,19 +1086,17 @@ class StaticStrings
static const size_t SMALL_CHAR_LIMIT = 128U;
static const size_t NUM_SMALL_CHARS = 64U;
- JSAtom* length2StaticTable[NUM_SMALL_CHARS * NUM_SMALL_CHARS];
+ JSAtom* length2StaticTable[NUM_SMALL_CHARS * NUM_SMALL_CHARS] = {}; // zeroes
public:
/* We keep these public for the JITs. */
static const size_t UNIT_STATIC_LIMIT = 256U;
- JSAtom* unitStaticTable[UNIT_STATIC_LIMIT];
+ JSAtom* unitStaticTable[UNIT_STATIC_LIMIT] = {}; // zeroes
static const size_t INT_STATIC_LIMIT = 256U;
- JSAtom* intStaticTable[INT_STATIC_LIMIT];
+ JSAtom* intStaticTable[INT_STATIC_LIMIT] = {}; // zeroes
- StaticStrings() {
- mozilla::PodZero(this);
- }
+ StaticStrings() = default;
bool init(JSContext* cx);
void trace(JSTracer* trc);
diff --git a/js/src/vm/StringObject-inl.h b/js/src/vm/StringObject-inl.h
index 5fc1656f6..38191fc7a 100644
--- a/js/src/vm/StringObject-inl.h
+++ b/js/src/vm/StringObject-inl.h
@@ -15,31 +15,29 @@
namespace js {
-inline bool
-StringObject::init(JSContext* cx, HandleString str)
+/* static */ inline bool
+StringObject::init(JSContext* cx, Handle<StringObject*> obj, HandleString str)
{
- MOZ_ASSERT(numFixedSlots() == 2);
+ MOZ_ASSERT(obj->numFixedSlots() == 2);
- Rooted<StringObject*> self(cx, this);
-
- if (!EmptyShape::ensureInitialCustomShape<StringObject>(cx, self))
+ if (!EmptyShape::ensureInitialCustomShape<StringObject>(cx, obj))
return false;
- MOZ_ASSERT(self->lookup(cx, NameToId(cx->names().length))->slot() == LENGTH_SLOT);
+ MOZ_ASSERT(obj->lookup(cx, NameToId(cx->names().length))->slot() == LENGTH_SLOT);
- self->setStringThis(str);
+ obj->setStringThis(str);
return true;
}
-inline StringObject*
+/* static */ inline StringObject*
StringObject::create(JSContext* cx, HandleString str, HandleObject proto, NewObjectKind newKind)
{
JSObject* obj = NewObjectWithClassProto(cx, &class_, proto, newKind);
if (!obj)
return nullptr;
Rooted<StringObject*> strobj(cx, &obj->as<StringObject>());
- if (!strobj->init(cx, str))
+ if (!StringObject::init(cx, strobj, str))
return nullptr;
return strobj;
}
diff --git a/js/src/vm/StringObject.h b/js/src/vm/StringObject.h
index 119e3d9fa..561e0478a 100644
--- a/js/src/vm/StringObject.h
+++ b/js/src/vm/StringObject.h
@@ -56,7 +56,7 @@ class StringObject : public NativeObject
}
private:
- inline bool init(JSContext* cx, HandleString str);
+ static inline bool init(JSContext* cx, Handle<StringObject*> obj, HandleString str);
void setStringThis(JSString* str) {
MOZ_ASSERT(getReservedSlot(PRIMITIVE_VALUE_SLOT).isUndefined());
diff --git a/js/src/vm/Time.cpp b/js/src/vm/Time.cpp
index 69e2cc41d..a9a5b7f0f 100644
--- a/js/src/vm/Time.cpp
+++ b/js/src/vm/Time.cpp
@@ -11,9 +11,10 @@
#include "mozilla/DebugOnly.h"
#include "mozilla/MathAlgorithms.h"
-#ifdef SOLARIS
+#ifdef XP_SOLARIS
#define _REENTRANT 1
#endif
+
#include <string.h>
#include <time.h>
@@ -33,7 +34,7 @@
#ifdef XP_UNIX
-#ifdef _SVID_GETTOD /* Defined only on Solaris, see Solaris <sys/types.h> */
+#ifdef _SVID_GETTOD /* Defined only on Solaris, see Solaris <sys/types.h> */
extern int gettimeofday(struct timeval* tv);
#endif
@@ -49,11 +50,11 @@ PRMJ_Now()
{
struct timeval tv;
-#ifdef _SVID_GETTOD /* Defined only on Solaris, see Solaris <sys/types.h> */
+#ifdef _SVID_GETTOD /* Defined only on Solaris, see Solaris <sys/types.h> */
gettimeofday(&tv);
#else
gettimeofday(&tv, 0);
-#endif /* _SVID_GETTOD */
+#endif /* _SVID_GETTOD */
return int64_t(tv.tv_sec) * PRMJ_USEC_PER_SEC + int64_t(tv.tv_usec);
}
diff --git a/js/src/vm/TypeInference-inl.h b/js/src/vm/TypeInference-inl.h
index da47fa898..2af252cea 100644
--- a/js/src/vm/TypeInference-inl.h
+++ b/js/src/vm/TypeInference-inl.h
@@ -23,7 +23,6 @@
#include "vm/SharedArrayObject.h"
#include "vm/StringObject.h"
#include "vm/TypedArrayObject.h"
-#include "vm/UnboxedObject.h"
#include "jscntxtinlines.h"
@@ -285,10 +284,6 @@ TypeIdString(jsid id)
*/
struct AutoEnterAnalysis
{
- // For use when initializing an UnboxedLayout. The UniquePtr's destructor
- // must run when GC is not suppressed.
- UniquePtr<UnboxedLayout> unboxedLayoutToCleanUp;
-
// Prevent GC activity in the middle of analysis.
gc::AutoSuppressGC suppressGC;
diff --git a/js/src/vm/TypeInference.cpp b/js/src/vm/TypeInference.cpp
index 3d09c7464..2b1fa0e3b 100644
--- a/js/src/vm/TypeInference.cpp
+++ b/js/src/vm/TypeInference.cpp
@@ -12,6 +12,8 @@
#include "mozilla/SizePrintfMacros.h"
#include "mozilla/Sprintf.h"
+#include <new>
+
#include "jsapi.h"
#include "jscntxt.h"
#include "jsgc.h"
@@ -33,7 +35,6 @@
#include "vm/Opcodes.h"
#include "vm/Shape.h"
#include "vm/Time.h"
-#include "vm/UnboxedObject.h"
#include "jsatominlines.h"
#include "jsscriptinlines.h"
@@ -295,9 +296,6 @@ js::ObjectGroupHasProperty(JSContext* cx, ObjectGroup* group, jsid id, const Val
return true;
}
}
- JSObject* obj = &value.toObject();
- if (!obj->hasLazyGroup() && obj->group()->maybeOriginalUnboxedGroup())
- return true;
}
if (!types->hasType(type)) {
@@ -859,10 +857,8 @@ TypeSet::IsTypeAboutToBeFinalized(TypeSet::Type* v)
}
bool
-TypeSet::clone(LifoAlloc* alloc, TemporaryTypeSet* result) const
+TypeSet::cloneIntoUninitialized(LifoAlloc* alloc, TemporaryTypeSet* result) const
{
- MOZ_ASSERT(result->empty());
-
unsigned objectCount = baseObjectCount();
unsigned capacity = (objectCount >= 2) ? TypeHashSet::Capacity(objectCount) : 0;
@@ -874,15 +870,15 @@ TypeSet::clone(LifoAlloc* alloc, TemporaryTypeSet* result) const
PodCopy(newSet, objectSet, capacity);
}
- new(result) TemporaryTypeSet(flags, capacity ? newSet : objectSet);
+ new (result) TemporaryTypeSet(flags, capacity ? newSet : objectSet);
return true;
}
TemporaryTypeSet*
TypeSet::clone(LifoAlloc* alloc) const
{
- TemporaryTypeSet* res = alloc->new_<TemporaryTypeSet>();
- if (!res || !clone(alloc, res))
+ TemporaryTypeSet* res = alloc->pod_malloc<TemporaryTypeSet>();
+ if (!res || !cloneIntoUninitialized(alloc, res))
return nullptr;
return res;
}
@@ -1150,10 +1146,9 @@ TypeScript::FreezeTypeSets(CompilerConstraintList* constraints, JSScript* script
TemporaryTypeSet* types = alloc->newArrayUninitialized<TemporaryTypeSet>(count);
if (!types)
return false;
- PodZero(types, count);
for (size_t i = 0; i < count; i++) {
- if (!existing[i].clone(alloc, &types[i]))
+ if (!existing[i].cloneIntoUninitialized(alloc, &types[i]))
return false;
}
@@ -1324,7 +1319,8 @@ js::EnsureTrackPropertyTypes(JSContext* cx, JSObject* obj, jsid id)
AutoEnterAnalysis enter(cx);
if (obj->hasLazyGroup()) {
AutoEnterOOMUnsafeRegion oomUnsafe;
- if (!obj->getGroup(cx)) {
+ RootedObject objRoot(cx, obj);
+ if (!JSObject::getGroup(cx, objRoot)) {
oomUnsafe.crash("Could not allocate ObjectGroup in EnsureTrackPropertyTypes");
return;
}
@@ -1343,9 +1339,12 @@ HeapTypeSetKey::instantiate(JSContext* cx)
{
if (maybeTypes())
return true;
- if (object()->isSingleton() && !object()->singleton()->getGroup(cx)) {
- cx->clearPendingException();
- return false;
+ if (object()->isSingleton()) {
+ RootedObject obj(cx, object()->singleton());
+ if (!JSObject::getGroup(cx, obj)) {
+ cx->clearPendingException();
+ return false;
+ }
}
JSObject* obj = object()->isSingleton() ? object()->singleton() : nullptr;
maybeTypes_ = object()->maybeGroup()->getProperty(cx, obj, id());
@@ -1945,33 +1944,6 @@ class ConstraintDataFreezeObjectForTypedArrayData
}
};
-// Constraint which triggers recompilation if an unboxed object in some group
-// is converted to a native object.
-class ConstraintDataFreezeObjectForUnboxedConvertedToNative
-{
- public:
- ConstraintDataFreezeObjectForUnboxedConvertedToNative()
- {}
-
- const char* kind() { return "freezeObjectForUnboxedConvertedToNative"; }
-
- bool invalidateOnNewType(TypeSet::Type type) { return false; }
- bool invalidateOnNewPropertyState(TypeSet* property) { return false; }
- bool invalidateOnNewObjectState(ObjectGroup* group) {
- return group->unboxedLayout().nativeGroup() != nullptr;
- }
-
- bool constraintHolds(JSContext* cx,
- const HeapTypeSetKey& property, TemporaryTypeSet* expected)
- {
- return !invalidateOnNewObjectState(property.object()->maybeGroup());
- }
-
- bool shouldSweep() { return false; }
-
- JSCompartment* maybeCompartment() { return nullptr; }
-};
-
} /* anonymous namespace */
void
@@ -1996,17 +1968,6 @@ TypeSet::ObjectKey::watchStateChangeForTypedArrayData(CompilerConstraintList* co
ConstraintDataFreezeObjectForTypedArrayData(tarray)));
}
-void
-TypeSet::ObjectKey::watchStateChangeForUnboxedConvertedToNative(CompilerConstraintList* constraints)
-{
- HeapTypeSetKey objectProperty = property(JSID_EMPTY);
- LifoAlloc* alloc = constraints->alloc();
-
- typedef CompilerConstraintInstance<ConstraintDataFreezeObjectForUnboxedConvertedToNative> T;
- constraints->add(alloc->new_<T>(alloc, objectProperty,
- ConstraintDataFreezeObjectForUnboxedConvertedToNative()));
-}
-
static void
ObjectStateChange(ExclusiveContext* cxArg, ObjectGroup* group, bool markingUnknown)
{
@@ -2517,8 +2478,6 @@ TemporaryTypeSet::propertyNeedsBarrier(CompilerConstraintList* constraints, jsid
bool
js::ClassCanHaveExtraProperties(const Class* clasp)
{
- if (clasp == &UnboxedPlainObject::class_ || clasp == &UnboxedArrayObject::class_)
- return false;
return clasp->getResolve()
|| clasp->getOpsLookupProperty()
|| clasp->getOpsGetProperty()
@@ -2711,14 +2670,6 @@ ObjectGroup::updateNewPropertyTypes(ExclusiveContext* cx, JSObject* objArg, jsid
if (shape)
UpdatePropertyType(cx, types, obj, shape, false);
}
-
- if (obj->watched()) {
- /*
- * Mark the property as non-data, to inhibit optimizations on it
- * and avoid bypassing the watchpoint handler.
- */
- types->setNonDataProperty(cx);
- }
}
void
@@ -2817,15 +2768,6 @@ js::AddTypePropertyId(ExclusiveContext* cx, ObjectGroup* group, JSObject* obj, j
// from acquiring the fully initialized group.
if (group->newScript() && group->newScript()->initializedGroup())
AddTypePropertyId(cx, group->newScript()->initializedGroup(), nullptr, id, type);
-
- // Maintain equivalent type information for unboxed object groups and their
- // corresponding native group. Since type sets might contain the unboxed
- // group but not the native group, this ensures optimizations based on the
- // unboxed group are valid for the native group.
- if (group->maybeUnboxedLayout() && group->maybeUnboxedLayout()->nativeGroup())
- AddTypePropertyId(cx, group->maybeUnboxedLayout()->nativeGroup(), nullptr, id, type);
- if (ObjectGroup* unboxedGroup = group->maybeOriginalUnboxedGroup())
- AddTypePropertyId(cx, unboxedGroup, nullptr, id, type);
}
void
@@ -2897,12 +2839,6 @@ ObjectGroup::setFlags(ExclusiveContext* cx, ObjectGroupFlags flags)
// acquired properties analysis.
if (newScript() && newScript()->initializedGroup())
newScript()->initializedGroup()->setFlags(cx, flags);
-
- // Propagate flag changes between unboxed and corresponding native groups.
- if (maybeUnboxedLayout() && maybeUnboxedLayout()->nativeGroup())
- maybeUnboxedLayout()->nativeGroup()->setFlags(cx, flags);
- if (ObjectGroup* unboxedGroup = maybeOriginalUnboxedGroup())
- unboxedGroup->setFlags(cx, flags);
}
void
@@ -2935,23 +2871,6 @@ ObjectGroup::markUnknown(ExclusiveContext* cx)
prop->types.setNonDataProperty(cx);
}
}
-
- if (ObjectGroup* unboxedGroup = maybeOriginalUnboxedGroup())
- MarkObjectGroupUnknownProperties(cx, unboxedGroup);
- if (maybeUnboxedLayout() && maybeUnboxedLayout()->nativeGroup())
- MarkObjectGroupUnknownProperties(cx, maybeUnboxedLayout()->nativeGroup());
- if (ObjectGroup* unboxedGroup = maybeOriginalUnboxedGroup())
- MarkObjectGroupUnknownProperties(cx, unboxedGroup);
-}
-
-TypeNewScript*
-ObjectGroup::anyNewScript()
-{
- if (newScript())
- return newScript();
- if (maybeUnboxedLayout())
- return unboxedLayout().newScript();
- return nullptr;
}
void
@@ -2961,7 +2880,7 @@ ObjectGroup::detachNewScript(bool writeBarrier, ObjectGroup* replacement)
// analyzed, remove it from the newObjectGroups table so that it will not be
// produced by calling 'new' on the associated function anymore.
// The TypeNewScript is not actually destroyed.
- TypeNewScript* newScript = anyNewScript();
+ TypeNewScript* newScript = this->newScript();
MOZ_ASSERT(newScript);
if (newScript->analyzed()) {
@@ -2980,10 +2899,7 @@ ObjectGroup::detachNewScript(bool writeBarrier, ObjectGroup* replacement)
MOZ_ASSERT(!replacement);
}
- if (this->newScript())
- setAddendum(Addendum_None, nullptr, writeBarrier);
- else
- unboxedLayout().setNewScript(nullptr, writeBarrier);
+ setAddendum(Addendum_None, nullptr, writeBarrier);
}
void
@@ -2994,7 +2910,7 @@ ObjectGroup::maybeClearNewScriptOnOOM()
if (!isMarked())
return;
- TypeNewScript* newScript = anyNewScript();
+ TypeNewScript* newScript = this->newScript();
if (!newScript)
return;
@@ -3009,7 +2925,7 @@ ObjectGroup::maybeClearNewScriptOnOOM()
void
ObjectGroup::clearNewScript(ExclusiveContext* cx, ObjectGroup* replacement /* = nullptr*/)
{
- TypeNewScript* newScript = anyNewScript();
+ TypeNewScript* newScript = this->newScript();
if (!newScript)
return;
@@ -3021,7 +2937,8 @@ ObjectGroup::clearNewScript(ExclusiveContext* cx, ObjectGroup* replacement /* =
// Mark the constructing function as having its 'new' script cleared, so we
// will not try to construct another one later.
- if (!newScript->function()->setNewScriptCleared(cx))
+ RootedFunction fun(cx, newScript->function());
+ if (!JSObject::setNewScriptCleared(cx, fun))
cx->recoverFromOutOfMemory();
}
@@ -3159,29 +3076,39 @@ class TypeConstraintClearDefiniteGetterSetter : public TypeConstraint
};
bool
-js::AddClearDefiniteGetterSetterForPrototypeChain(JSContext* cx, ObjectGroup* group, HandleId id)
+js::AddClearDefiniteGetterSetterForPrototypeChain(JSContext* cx,
+ DPAConstraintInfo& constraintInfo,
+ ObjectGroup* group,
+ HandleId id,
+ bool* added)
{
/*
* Ensure that if the properties named here could have a getter, setter or
* a permanent property in any transitive prototype, the definite
* properties get cleared from the group.
*/
+
+ *added = false;
+
RootedObject proto(cx, group->proto().toObjectOrNull());
while (proto) {
- ObjectGroup* protoGroup = proto->getGroup(cx);
+ ObjectGroup* protoGroup = JSObject::getGroup(cx, proto);
if (!protoGroup) {
- cx->recoverFromOutOfMemory();
return false;
}
if (protoGroup->unknownProperties())
- return false;
+ return true;
HeapTypeSet* protoTypes = protoGroup->getProperty(cx, proto, id);
- if (!protoTypes || protoTypes->nonDataProperty() || protoTypes->nonWritableProperty())
+ if (!protoTypes)
return false;
- if (!protoTypes->addConstraint(cx, cx->typeLifoAlloc().new_<TypeConstraintClearDefiniteGetterSetter>(group)))
+ if (protoTypes->nonDataProperty() || protoTypes->nonWritableProperty())
+ return true;
+ if (!constraintInfo.addProtoConstraint(proto, id))
return false;
proto = proto->staticPrototype();
}
+
+ *added = true;
return true;
}
@@ -3405,7 +3332,7 @@ JSFunction::setTypeForScriptedFunction(ExclusiveContext* cx, HandleFunction fun,
/////////////////////////////////////////////////////////////////////
void
-PreliminaryObjectArray::registerNewObject(JSObject* res)
+PreliminaryObjectArray::registerNewObject(PlainObject* res)
{
// The preliminary object pointers are weak, and won't be swept properly
// during nursery collections, so the preliminary objects need to be
@@ -3423,7 +3350,7 @@ PreliminaryObjectArray::registerNewObject(JSObject* res)
}
void
-PreliminaryObjectArray::unregisterObject(JSObject* obj)
+PreliminaryObjectArray::unregisterObject(PlainObject* obj)
{
for (size_t i = 0; i < COUNT; i++) {
if (objects[i] == obj) {
@@ -3463,22 +3390,6 @@ PreliminaryObjectArray::sweep()
for (size_t i = 0; i < COUNT; i++) {
JSObject** ptr = &objects[i];
if (*ptr && IsAboutToBeFinalizedUnbarriered(ptr)) {
- // Before we clear this reference, change the object's group to the
- // Object.prototype group. This is done to ensure JSObject::finalize
- // sees a NativeObject Class even if we change the current group's
- // Class to one of the unboxed object classes in the meantime. If
- // the compartment's global is dead, we don't do anything as the
- // group's Class is not going to change in that case.
- JSObject* obj = *ptr;
- GlobalObject* global = obj->compartment()->unsafeUnbarrieredMaybeGlobal();
- if (global && !obj->isSingleton()) {
- JSObject* objectProto = GetBuiltinPrototypePure(global, JSProto_Object);
- obj->setGroup(objectProto->groupRaw());
- MOZ_ASSERT(obj->is<NativeObject>());
- MOZ_ASSERT(obj->getClass() == objectProto->getClass());
- MOZ_ASSERT(!obj->getClass()->hasFinalize());
- }
-
*ptr = nullptr;
}
}
@@ -3578,17 +3489,11 @@ PreliminaryObjectArrayWithTemplate::maybeAnalyze(ExclusiveContext* cx, ObjectGro
}
}
- TryConvertToUnboxedLayout(cx, enter, shape(), group, preliminaryObjects);
- if (group->maybeUnboxedLayout())
- return;
-
- if (shape()) {
- // We weren't able to use an unboxed layout, but since the preliminary
- // objects still reflect the template object's properties, and all
- // objects in the future will be created with those properties, the
- // properties can be marked as definite for objects in the group.
- group->addDefiniteProperties(cx, shape());
- }
+ // Since the preliminary objects still reflect the template object's
+ // properties, and all objects in the future will be created with those
+ // properties, the properties can be marked as definitive for objects in
+ // the group.
+ group->addDefiniteProperties(cx, shape());
}
/////////////////////////////////////////////////////////////////////
@@ -3602,7 +3507,10 @@ TypeNewScript::make(JSContext* cx, ObjectGroup* group, JSFunction* fun)
{
MOZ_ASSERT(cx->zone()->types.activeAnalysis);
MOZ_ASSERT(!group->newScript());
- MOZ_ASSERT(!group->maybeUnboxedLayout());
+
+ // rollbackPartiallyInitializedObjects expects function_ to be
+ // canonicalized.
+ MOZ_ASSERT(fun->maybeCanonicalFunction() == fun);
if (group->unknownProperties())
return true;
@@ -3706,6 +3614,43 @@ struct DestroyTypeNewScript
} // namespace
+bool DPAConstraintInfo::finishConstraints(JSContext* cx, ObjectGroup* group) {
+ for (const ProtoConstraint& constraint : protoConstraints_) {
+ ObjectGroup* protoGroup = constraint.proto->group();
+
+ // Note: we rely on the group's type information being unchanged since
+ // AddClearDefiniteGetterSetterForPrototypeChain.
+
+ bool unknownProperties = protoGroup->unknownProperties();
+ MOZ_RELEASE_ASSERT(!unknownProperties);
+
+ HeapTypeSet* protoTypes =
+ protoGroup->getProperty(cx, constraint.proto, constraint.id);
+ MOZ_RELEASE_ASSERT(protoTypes);
+
+ MOZ_ASSERT(!protoTypes->nonDataProperty());
+ MOZ_ASSERT(!protoTypes->nonWritableProperty());
+
+ if (!protoTypes->addConstraint(
+ cx,
+ cx->typeLifoAlloc().new_<TypeConstraintClearDefiniteGetterSetter>(
+ group))) {
+ ReportOutOfMemory(cx);
+ return false;
+ }
+ }
+
+ for (const InliningConstraint& constraint : inliningConstraints_) {
+ if (!AddClearDefiniteFunctionUsesInScript(cx, group, constraint.caller,
+ constraint.callee)) {
+ ReportOutOfMemory(cx);
+ return false;
+ }
+ }
+
+ return true;
+}
+
bool
TypeNewScript::maybeAnalyze(JSContext* cx, ObjectGroup* group, bool* regenerate, bool force)
{
@@ -3809,9 +3754,17 @@ TypeNewScript::maybeAnalyze(JSContext* cx, ObjectGroup* group, bool* regenerate,
return false;
Vector<Initializer> initializerVector(cx);
+
+ DPAConstraintInfo constraintInfo(cx);
RootedPlainObject templateRoot(cx, templateObject());
- if (!jit::AnalyzeNewScriptDefiniteProperties(cx, function(), group, templateRoot, &initializerVector))
+ RootedFunction fun(cx, function());
+ if (!jit::AnalyzeNewScriptDefiniteProperties(cx,
+ constraintInfo,
+ fun,
+ group,
+ templateRoot,
+ &initializerVector))
return false;
if (!group->newScript())
@@ -3858,38 +3811,21 @@ TypeNewScript::maybeAnalyze(JSContext* cx, ObjectGroup* group, bool* regenerate,
PodCopy(initializerList, initializerVector.begin(), initializerVector.length());
}
- // Try to use an unboxed representation for the group.
- if (!TryConvertToUnboxedLayout(cx, enter, templateObject()->lastProperty(), group, preliminaryObjects))
- return false;
-
js_delete(preliminaryObjects);
preliminaryObjects = nullptr;
- if (group->maybeUnboxedLayout()) {
- // An unboxed layout was constructed for the group, and this has already
- // been hooked into it.
- MOZ_ASSERT(group->unboxedLayout().newScript() == this);
- destroyNewScript.group = nullptr;
-
- // Clear out the template object, which is not used for TypeNewScripts
- // with an unboxed layout. Currently it is a mutant object with a
- // non-native group and native shape, so make it safe for GC by changing
- // its group to the default for its prototype.
- AutoEnterOOMUnsafeRegion oomUnsafe;
- ObjectGroup* plainGroup = ObjectGroup::defaultNewGroup(cx, &PlainObject::class_,
- group->proto());
- if (!plainGroup)
- oomUnsafe.crash("TypeNewScript::maybeAnalyze");
- templateObject_->setGroup(plainGroup);
- templateObject_ = nullptr;
-
- return true;
- }
-
if (prefixShape->slotSpan() == templateObject()->slotSpan()) {
// The definite properties analysis found exactly the properties that
// are held in common by the preliminary objects. No further analysis
// is needed.
+
+ if (!constraintInfo.finishConstraints(cx, group)) {
+ return false;
+ }
+ if (!group->newScript()) {
+ return true;
+ }
+
group->addDefiniteProperties(cx, templateObject()->lastProperty());
destroyNewScript.group = nullptr;
@@ -3911,6 +3847,16 @@ TypeNewScript::maybeAnalyze(JSContext* cx, ObjectGroup* group, bool* regenerate,
if (!initialGroup)
return false;
+ // Add the constraints. Use the initialGroup as group referenced by the
+ // constraints because that's the group that will have the TypeNewScript
+ // associated with it. See the detachNewScript and setNewScript calls below.
+ if (!constraintInfo.finishConstraints(cx, initialGroup)) {
+ return false;
+ }
+ if (!group->newScript()) {
+ return true;
+ }
+
initialGroup->addDefiniteProperties(cx, templateObject()->lastProperty());
group->addDefiniteProperties(cx, prefixShape);
@@ -3959,8 +3905,15 @@ TypeNewScript::rollbackPartiallyInitializedObjects(JSContext* cx, ObjectGroup* g
oomUnsafe.crash("rollbackPartiallyInitializedObjects");
}
- if (!iter.isConstructing() || !iter.matchCallee(cx, function))
+ if (!iter.isConstructing()) {
continue;
+ }
+
+ MOZ_ASSERT(iter.calleeTemplate()->maybeCanonicalFunction());
+
+ if (iter.calleeTemplate()->maybeCanonicalFunction() != function) {
+ continue;
+ }
// Derived class constructors initialize their this-binding later and
// we shouldn't run the definite properties analysis on them.
@@ -3974,12 +3927,6 @@ TypeNewScript::rollbackPartiallyInitializedObjects(JSContext* cx, ObjectGroup* g
continue;
}
- if (thisv.toObject().is<UnboxedPlainObject>()) {
- AutoEnterOOMUnsafeRegion oomUnsafe;
- if (!UnboxedPlainObject::convertToNative(cx, &thisv.toObject()))
- oomUnsafe.crash("rollbackPartiallyInitializedObjects");
- }
-
// Found a matching frame.
RootedPlainObject obj(cx, &thisv.toObject().as<PlainObject>());
@@ -4173,12 +4120,6 @@ ConstraintTypeSet::sweep(Zone* zone, AutoClearTypeInferenceStateOnOOM& oom)
// Object sets containing objects with unknown properties might
// not be complete. Mark the type set as unknown, which it will
// be treated as during Ion compilation.
- //
- // Note that we don't have to do this when the type set might
- // be missing the native group corresponding to an unboxed
- // object group. In this case, the native group points to the
- // unboxed object group via its addendum, so as long as objects
- // with either group exist, neither group will be finalized.
flags |= TYPE_FLAG_ANYOBJECT;
clearObjects();
objectCount = 0;
@@ -4262,21 +4203,6 @@ ObjectGroup::sweep(AutoClearTypeInferenceStateOnOOM* oom)
Maybe<AutoClearTypeInferenceStateOnOOM> fallbackOOM;
EnsureHasAutoClearTypeInferenceStateOnOOM(oom, zone(), fallbackOOM);
- if (maybeUnboxedLayout()) {
- // Remove unboxed layouts that are about to be finalized from the
- // compartment wide list while we are still on the main thread.
- ObjectGroup* group = this;
- if (IsAboutToBeFinalizedUnbarriered(&group))
- unboxedLayout().detachFromCompartment();
-
- if (unboxedLayout().newScript())
- unboxedLayout().newScript()->sweep();
-
- // Discard constructor code to avoid holding onto ExecutablePools.
- if (zone()->isGCCompacting())
- unboxedLayout().setConstructorCode(nullptr);
- }
-
if (maybePreliminaryObjects())
maybePreliminaryObjects()->sweep();
diff --git a/js/src/vm/TypeInference.h b/js/src/vm/TypeInference.h
index 9ba1c3cc8..fd021fc96 100644
--- a/js/src/vm/TypeInference.h
+++ b/js/src/vm/TypeInference.h
@@ -262,7 +262,6 @@ class TypeSet
bool hasStableClassAndProto(CompilerConstraintList* constraints);
void watchStateChangeForInlinedCall(CompilerConstraintList* constraints);
void watchStateChangeForTypedArrayData(CompilerConstraintList* constraints);
- void watchStateChangeForUnboxedConvertedToNative(CompilerConstraintList* constraints);
HeapTypeSetKey property(jsid id);
void ensureTrackedProperty(JSContext* cx, jsid id);
@@ -498,7 +497,10 @@ class TypeSet
// Clone a type set into an arbitrary allocator.
TemporaryTypeSet* clone(LifoAlloc* alloc) const;
- bool clone(LifoAlloc* alloc, TemporaryTypeSet* result) const;
+
+ // |*result| is not even partly initialized when this function is called:
+ // this function placement-new's its contents into existence.
+ bool cloneIntoUninitialized(LifoAlloc* alloc, TemporaryTypeSet* result) const;
// Create a new TemporaryTypeSet where undefined and/or null has been filtered out.
TemporaryTypeSet* filter(LifoAlloc* alloc, bool filterUndefined, bool filterNull) const;
@@ -787,8 +789,65 @@ class TemporaryTypeSet : public TypeSet
TypedArraySharedness* sharedness);
};
+// Stack class to record information about constraints that need to be added
+// after finishing the Definite Properties Analysis. When the analysis succeeds,
+// the |finishConstraints| method must be called to add the constraints to the
+// TypeSets.
+//
+// There are two constraint types managed here:
+//
+// 1. Proto constraints for HeapTypeSets, to guard against things like getters
+// and setters on the proto chain.
+//
+// 2. Inlining constraints for StackTypeSets, to invalidate when additional
+// functions could be called at call sites where we inlined a function.
+//
+// This class uses bare GC-thing pointers because GC is suppressed when the
+// analysis runs.
+class MOZ_RAII DPAConstraintInfo {
+ struct ProtoConstraint {
+ JSObject* proto;
+ jsid id;
+ ProtoConstraint(JSObject* proto, jsid id) : proto(proto), id(id) {}
+ };
+ struct InliningConstraint {
+ JSScript* caller;
+ JSScript* callee;
+ InliningConstraint(JSScript* caller, JSScript* callee)
+ : caller(caller), callee(callee) {}
+ };
+
+ JS::AutoCheckCannotGC nogc_;
+ Vector<ProtoConstraint, 8> protoConstraints_;
+ Vector<InliningConstraint, 4> inliningConstraints_;
+
+public:
+ explicit DPAConstraintInfo(JSContext* cx)
+ : nogc_(cx)
+ , protoConstraints_(cx)
+ , inliningConstraints_(cx)
+ {
+ }
+
+ DPAConstraintInfo(const DPAConstraintInfo&) = delete;
+ void operator=(const DPAConstraintInfo&) = delete;
+
+ MOZ_MUST_USE bool addProtoConstraint(JSObject* proto, jsid id) {
+ return protoConstraints_.emplaceBack(proto, id);
+ }
+ MOZ_MUST_USE bool addInliningConstraint(JSScript* caller, JSScript* callee) {
+ return inliningConstraints_.emplaceBack(caller, callee);
+ }
+
+ MOZ_MUST_USE bool finishConstraints(JSContext* cx, ObjectGroup* group);
+};
+
bool
-AddClearDefiniteGetterSetterForPrototypeChain(JSContext* cx, ObjectGroup* group, HandleId id);
+AddClearDefiniteGetterSetterForPrototypeChain(JSContext* cx,
+ DPAConstraintInfo& constraintInfo,
+ ObjectGroup* group,
+ HandleId id,
+ bool* added);
bool
AddClearDefiniteFunctionUsesInScript(JSContext* cx, ObjectGroup* group,
@@ -807,15 +866,13 @@ class PreliminaryObjectArray
private:
// All objects with the type which have been allocated. The pointers in
// this array are weak.
- JSObject* objects[COUNT];
+ JSObject* objects[COUNT] = {}; // zeroes
public:
- PreliminaryObjectArray() {
- mozilla::PodZero(this);
- }
+ PreliminaryObjectArray() = default;
- void registerNewObject(JSObject* res);
- void unregisterObject(JSObject* obj);
+ void registerNewObject(PlainObject* res);
+ void unregisterObject(PlainObject* obj);
JSObject* get(size_t i) const {
MOZ_ASSERT(i < COUNT);
@@ -906,11 +963,11 @@ class TypeNewScript
private:
// Scripted function which this information was computed for.
- HeapPtr<JSFunction*> function_;
+ HeapPtr<JSFunction*> function_ = {};
// Any preliminary objects with the type. The analyses are not performed
// until this array is cleared.
- PreliminaryObjectArray* preliminaryObjects;
+ PreliminaryObjectArray* preliminaryObjects = nullptr;
// After the new script properties analyses have been performed, a template
// object to use for newly constructed objects. The shape of this object
@@ -918,7 +975,7 @@ class TypeNewScript
// allocation kind to use. This is null if the new objects have an unboxed
// layout, in which case the UnboxedLayout provides the initial structure
// of the object.
- HeapPtr<PlainObject*> templateObject_;
+ HeapPtr<PlainObject*> templateObject_ = {};
// Order in which definite properties become initialized. We need this in
// case the definite properties are invalidated (such as by adding a setter
@@ -928,21 +985,21 @@ class TypeNewScript
// shape. Property assignments in inner frames are preceded by a series of
// SETPROP_FRAME entries specifying the stack down to the frame containing
// the write.
- Initializer* initializerList;
+ Initializer* initializerList = nullptr;
// If there are additional properties found by the acquired properties
// analysis which were not found by the definite properties analysis, this
// shape contains all such additional properties (plus the definite
// properties). When an object of this group acquires this shape, it is
// fully initialized and its group can be changed to initializedGroup.
- HeapPtr<Shape*> initializedShape_;
+ HeapPtr<Shape*> initializedShape_ = {};
// Group with definite properties set for all properties found by
// both the definite and acquired properties analyses.
- HeapPtr<ObjectGroup*> initializedGroup_;
+ HeapPtr<ObjectGroup*> initializedGroup_ = {};
public:
- TypeNewScript() { mozilla::PodZero(this); }
+ TypeNewScript() = default;
~TypeNewScript() {
js_delete(preliminaryObjects);
js_free(initializerList);
diff --git a/js/src/vm/TypedArrayCommon.h b/js/src/vm/TypedArrayCommon.h
index d29c93a65..f59419b28 100644
--- a/js/src/vm/TypedArrayCommon.h
+++ b/js/src/vm/TypedArrayCommon.h
@@ -11,7 +11,8 @@
#include "mozilla/Assertions.h"
#include "mozilla/FloatingPoint.h"
-#include "mozilla/PodOperations.h"
+
+#include <algorithm>
#include "jsarray.h"
#include "jscntxt.h"
@@ -245,12 +246,24 @@ class UnsharedOps
template<typename T>
static void podCopy(SharedMem<T*> dest, SharedMem<T*> src, size_t nelem) {
- mozilla::PodCopy(dest.unwrapUnshared(), src.unwrapUnshared(), nelem);
+ // std::copy_n better matches the argument values/types of this
+ // function, but as noted below it allows the input/output ranges to
+ // overlap. std::copy does not, so use it so the compiler has extra
+ // ability to optimize.
+ const auto* first = src.unwrapUnshared();
+ const auto* last = first + nelem;
+ auto* result = dest.unwrapUnshared();
+ std::copy(first, last, result);
}
template<typename T>
- static void podMove(SharedMem<T*> dest, SharedMem<T*> src, size_t nelem) {
- mozilla::PodMove(dest.unwrapUnshared(), src.unwrapUnshared(), nelem);
+ static void podMove(SharedMem<T*> dest, SharedMem<T*> src, size_t n) {
+ // std::copy_n copies from |src| to |dest| starting from |src|, so
+ // input/output ranges *may* permissibly overlap, as this function
+ // allows.
+ const auto* start = src.unwrapUnshared();
+ auto* result = dest.unwrapUnshared();
+ std::copy_n(start, n, result);
}
static SharedMem<void*> extract(TypedArrayObject* obj) {
diff --git a/js/src/vm/TypedArrayObject.cpp b/js/src/vm/TypedArrayObject.cpp
index ae97be0de..8b0302917 100644
--- a/js/src/vm/TypedArrayObject.cpp
+++ b/js/src/vm/TypedArrayObject.cpp
@@ -361,7 +361,7 @@ class TypedArrayObjectTemplate : public TypedArrayObject
return nullptr;
const Class* clasp = TypedArrayObject::protoClassForType(ArrayTypeID());
- return global->createBlankPrototypeInheriting(cx, clasp, typedArrayProto);
+ return GlobalObject::createBlankPrototypeInheriting(cx, global, clasp, typedArrayProto);
}
static JSObject*
@@ -1892,7 +1892,7 @@ DataViewObject::constructWrapped(JSContext* cx, HandleObject bufobj, const CallA
Rooted<GlobalObject*> global(cx, cx->compartment()->maybeGlobal());
if (!proto) {
- proto = global->getOrCreateDataViewPrototype(cx);
+ proto = GlobalObject::getOrCreateDataViewPrototype(cx, global);
if (!proto)
return false;
}
@@ -2892,12 +2892,13 @@ DataViewObject::initClass(JSContext* cx)
if (global->isStandardClassResolved(JSProto_DataView))
return true;
- RootedNativeObject proto(cx, global->createBlankPrototype(cx, &DataViewObject::protoClass));
+ RootedNativeObject proto(cx, GlobalObject::createBlankPrototype(cx, global,
+ &DataViewObject::protoClass));
if (!proto)
return false;
- RootedFunction ctor(cx, global->createConstructor(cx, DataViewObject::class_constructor,
- cx->names().DataView, 3));
+ RootedFunction ctor(cx, GlobalObject::createConstructor(cx, DataViewObject::class_constructor,
+ cx->names().DataView, 3));
if (!ctor)
return false;
diff --git a/js/src/vm/UnboxedObject-inl.h b/js/src/vm/UnboxedObject-inl.h
deleted file mode 100644
index 93ad7bf28..000000000
--- a/js/src/vm/UnboxedObject-inl.h
+++ /dev/null
@@ -1,840 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- * vim: set ts=8 sts=4 et sw=4 tw=99:
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef vm_UnboxedObject_inl_h
-#define vm_UnboxedObject_inl_h
-
-#include "vm/UnboxedObject.h"
-
-#include "gc/StoreBuffer-inl.h"
-#include "vm/ArrayObject-inl.h"
-#include "vm/NativeObject-inl.h"
-
-namespace js {
-
-static inline Value
-GetUnboxedValue(uint8_t* p, JSValueType type, bool maybeUninitialized)
-{
- switch (type) {
- case JSVAL_TYPE_BOOLEAN:
- return BooleanValue(*p != 0);
-
- case JSVAL_TYPE_INT32:
- return Int32Value(*reinterpret_cast<int32_t*>(p));
-
- case JSVAL_TYPE_DOUBLE: {
- // During unboxed plain object creation, non-GC thing properties are
- // left uninitialized. This is normally fine, since the properties will
- // be filled in shortly, but if they are read before that happens we
- // need to make sure that doubles are canonical.
- double d = *reinterpret_cast<double*>(p);
- if (maybeUninitialized)
- return DoubleValue(JS::CanonicalizeNaN(d));
- return DoubleValue(d);
- }
-
- case JSVAL_TYPE_STRING:
- return StringValue(*reinterpret_cast<JSString**>(p));
-
- case JSVAL_TYPE_OBJECT:
- return ObjectOrNullValue(*reinterpret_cast<JSObject**>(p));
-
- default:
- MOZ_CRASH("Invalid type for unboxed value");
- }
-}
-
-static inline void
-SetUnboxedValueNoTypeChange(JSObject* unboxedObject,
- uint8_t* p, JSValueType type, const Value& v,
- bool preBarrier)
-{
- switch (type) {
- case JSVAL_TYPE_BOOLEAN:
- *p = v.toBoolean();
- return;
-
- case JSVAL_TYPE_INT32:
- *reinterpret_cast<int32_t*>(p) = v.toInt32();
- return;
-
- case JSVAL_TYPE_DOUBLE:
- *reinterpret_cast<double*>(p) = v.toNumber();
- return;
-
- case JSVAL_TYPE_STRING: {
- MOZ_ASSERT(!IsInsideNursery(v.toString()));
- JSString** np = reinterpret_cast<JSString**>(p);
- if (preBarrier)
- JSString::writeBarrierPre(*np);
- *np = v.toString();
- return;
- }
-
- case JSVAL_TYPE_OBJECT: {
- JSObject** np = reinterpret_cast<JSObject**>(p);
-
- // Manually trigger post barriers on the whole object. If we treat
- // the pointer as a HeapPtrObject we will get confused later if the
- // object is converted to its native representation.
- JSObject* obj = v.toObjectOrNull();
- if (IsInsideNursery(obj) && !IsInsideNursery(unboxedObject)) {
- JSRuntime* rt = unboxedObject->runtimeFromMainThread();
- rt->gc.storeBuffer.putWholeCell(unboxedObject);
- }
-
- if (preBarrier)
- JSObject::writeBarrierPre(*np);
- *np = obj;
- return;
- }
-
- default:
- MOZ_CRASH("Invalid type for unboxed value");
- }
-}
-
-static inline bool
-SetUnboxedValue(ExclusiveContext* cx, JSObject* unboxedObject, jsid id,
- uint8_t* p, JSValueType type, const Value& v, bool preBarrier)
-{
- switch (type) {
- case JSVAL_TYPE_BOOLEAN:
- if (v.isBoolean()) {
- *p = v.toBoolean();
- return true;
- }
- return false;
-
- case JSVAL_TYPE_INT32:
- if (v.isInt32()) {
- *reinterpret_cast<int32_t*>(p) = v.toInt32();
- return true;
- }
- return false;
-
- case JSVAL_TYPE_DOUBLE:
- if (v.isNumber()) {
- *reinterpret_cast<double*>(p) = v.toNumber();
- return true;
- }
- return false;
-
- case JSVAL_TYPE_STRING:
- if (v.isString()) {
- MOZ_ASSERT(!IsInsideNursery(v.toString()));
- JSString** np = reinterpret_cast<JSString**>(p);
- if (preBarrier)
- JSString::writeBarrierPre(*np);
- *np = v.toString();
- return true;
- }
- return false;
-
- case JSVAL_TYPE_OBJECT:
- if (v.isObjectOrNull()) {
- JSObject** np = reinterpret_cast<JSObject**>(p);
-
- // Update property types when writing object properties. Types for
- // other properties were captured when the unboxed layout was
- // created.
- AddTypePropertyId(cx, unboxedObject, id, v);
-
- // As above, trigger post barriers on the whole object.
- JSObject* obj = v.toObjectOrNull();
- if (IsInsideNursery(v.toObjectOrNull()) && !IsInsideNursery(unboxedObject)) {
- JSRuntime* rt = unboxedObject->runtimeFromMainThread();
- rt->gc.storeBuffer.putWholeCell(unboxedObject);
- }
-
- if (preBarrier)
- JSObject::writeBarrierPre(*np);
- *np = obj;
- return true;
- }
- return false;
-
- default:
- MOZ_CRASH("Invalid type for unboxed value");
- }
-}
-
-/////////////////////////////////////////////////////////////////////
-// UnboxedPlainObject
-/////////////////////////////////////////////////////////////////////
-
-inline const UnboxedLayout&
-UnboxedPlainObject::layout() const
-{
- return group()->unboxedLayout();
-}
-
-/////////////////////////////////////////////////////////////////////
-// UnboxedArrayObject
-/////////////////////////////////////////////////////////////////////
-
-inline const UnboxedLayout&
-UnboxedArrayObject::layout() const
-{
- return group()->unboxedLayout();
-}
-
-inline void
-UnboxedArrayObject::setLength(ExclusiveContext* cx, uint32_t length)
-{
- if (length > INT32_MAX) {
- // Track objects with overflowing lengths in type information.
- MarkObjectGroupFlags(cx, this, OBJECT_FLAG_LENGTH_OVERFLOW);
- }
-
- length_ = length;
-}
-
-inline void
-UnboxedArrayObject::setInitializedLength(uint32_t initlen)
-{
- if (initlen < initializedLength()) {
- switch (elementType()) {
- case JSVAL_TYPE_STRING:
- for (size_t i = initlen; i < initializedLength(); i++)
- triggerPreBarrier<JSVAL_TYPE_STRING>(i);
- break;
- case JSVAL_TYPE_OBJECT:
- for (size_t i = initlen; i < initializedLength(); i++)
- triggerPreBarrier<JSVAL_TYPE_OBJECT>(i);
- break;
- default:
- MOZ_ASSERT(!UnboxedTypeNeedsPreBarrier(elementType()));
- }
- }
- setInitializedLengthNoBarrier(initlen);
-}
-
-template <JSValueType Type>
-inline bool
-UnboxedArrayObject::setElementSpecific(ExclusiveContext* cx, size_t index, const Value& v)
-{
- MOZ_ASSERT(index < initializedLength());
- MOZ_ASSERT(Type == elementType());
- uint8_t* p = elements() + index * UnboxedTypeSize(Type);
- return SetUnboxedValue(cx, this, JSID_VOID, p, elementType(), v, /* preBarrier = */ true);
-}
-
-template <JSValueType Type>
-inline void
-UnboxedArrayObject::setElementNoTypeChangeSpecific(size_t index, const Value& v)
-{
- MOZ_ASSERT(index < initializedLength());
- MOZ_ASSERT(Type == elementType());
- uint8_t* p = elements() + index * UnboxedTypeSize(Type);
- return SetUnboxedValueNoTypeChange(this, p, elementType(), v, /* preBarrier = */ true);
-}
-
-template <JSValueType Type>
-inline bool
-UnboxedArrayObject::initElementSpecific(ExclusiveContext* cx, size_t index, const Value& v)
-{
- MOZ_ASSERT(index < initializedLength());
- MOZ_ASSERT(Type == elementType());
- uint8_t* p = elements() + index * UnboxedTypeSize(Type);
- return SetUnboxedValue(cx, this, JSID_VOID, p, elementType(), v, /* preBarrier = */ false);
-}
-
-template <JSValueType Type>
-inline void
-UnboxedArrayObject::initElementNoTypeChangeSpecific(size_t index, const Value& v)
-{
- MOZ_ASSERT(index < initializedLength());
- MOZ_ASSERT(Type == elementType());
- uint8_t* p = elements() + index * UnboxedTypeSize(Type);
- return SetUnboxedValueNoTypeChange(this, p, elementType(), v, /* preBarrier = */ false);
-}
-
-template <JSValueType Type>
-inline Value
-UnboxedArrayObject::getElementSpecific(size_t index)
-{
- MOZ_ASSERT(index < initializedLength());
- MOZ_ASSERT(Type == elementType());
- uint8_t* p = elements() + index * UnboxedTypeSize(Type);
- return GetUnboxedValue(p, Type, /* maybeUninitialized = */ false);
-}
-
-template <JSValueType Type>
-inline void
-UnboxedArrayObject::triggerPreBarrier(size_t index)
-{
- MOZ_ASSERT(UnboxedTypeNeedsPreBarrier(Type));
-
- uint8_t* p = elements() + index * UnboxedTypeSize(Type);
-
- switch (Type) {
- case JSVAL_TYPE_STRING: {
- JSString** np = reinterpret_cast<JSString**>(p);
- JSString::writeBarrierPre(*np);
- break;
- }
-
- case JSVAL_TYPE_OBJECT: {
- JSObject** np = reinterpret_cast<JSObject**>(p);
- JSObject::writeBarrierPre(*np);
- break;
- }
-
- default:
- MOZ_CRASH("Bad type");
- }
-}
-
-/////////////////////////////////////////////////////////////////////
-// Combined methods for NativeObject and UnboxedArrayObject accesses.
-/////////////////////////////////////////////////////////////////////
-
-static inline bool
-HasAnyBoxedOrUnboxedDenseElements(JSObject* obj)
-{
- return obj->isNative() || obj->is<UnboxedArrayObject>();
-}
-
-static inline size_t
-GetAnyBoxedOrUnboxedInitializedLength(JSObject* obj)
-{
- if (obj->isNative())
- return obj->as<NativeObject>().getDenseInitializedLength();
- if (obj->is<UnboxedArrayObject>())
- return obj->as<UnboxedArrayObject>().initializedLength();
- return 0;
-}
-
-static inline size_t
-GetAnyBoxedOrUnboxedCapacity(JSObject* obj)
-{
- if (obj->isNative())
- return obj->as<NativeObject>().getDenseCapacity();
- if (obj->is<UnboxedArrayObject>())
- return obj->as<UnboxedArrayObject>().capacity();
- return 0;
-}
-
-static inline Value
-GetAnyBoxedOrUnboxedDenseElement(JSObject* obj, size_t index)
-{
- if (obj->isNative())
- return obj->as<NativeObject>().getDenseElement(index);
- return obj->as<UnboxedArrayObject>().getElement(index);
-}
-
-static inline size_t
-GetAnyBoxedOrUnboxedArrayLength(JSObject* obj)
-{
- if (obj->is<ArrayObject>())
- return obj->as<ArrayObject>().length();
- return obj->as<UnboxedArrayObject>().length();
-}
-
-static inline void
-SetAnyBoxedOrUnboxedArrayLength(JSContext* cx, JSObject* obj, size_t length)
-{
- if (obj->is<ArrayObject>()) {
- MOZ_ASSERT(length >= obj->as<ArrayObject>().length());
- obj->as<ArrayObject>().setLength(cx, length);
- } else {
- MOZ_ASSERT(length >= obj->as<UnboxedArrayObject>().length());
- obj->as<UnboxedArrayObject>().setLength(cx, length);
- }
-}
-
-static inline bool
-SetAnyBoxedOrUnboxedDenseElement(JSContext* cx, JSObject* obj, size_t index, const Value& value)
-{
- if (obj->isNative()) {
- obj->as<NativeObject>().setDenseElementWithType(cx, index, value);
- return true;
- }
- return obj->as<UnboxedArrayObject>().setElement(cx, index, value);
-}
-
-static inline bool
-InitAnyBoxedOrUnboxedDenseElement(JSContext* cx, JSObject* obj, size_t index, const Value& value)
-{
- if (obj->isNative()) {
- obj->as<NativeObject>().initDenseElementWithType(cx, index, value);
- return true;
- }
- return obj->as<UnboxedArrayObject>().initElement(cx, index, value);
-}
-
-/////////////////////////////////////////////////////////////////////
-// Template methods for NativeObject and UnboxedArrayObject accesses.
-/////////////////////////////////////////////////////////////////////
-
-static inline JSValueType
-GetBoxedOrUnboxedType(JSObject* obj)
-{
- if (obj->isNative())
- return JSVAL_TYPE_MAGIC;
- return obj->as<UnboxedArrayObject>().elementType();
-}
-
-template <JSValueType Type>
-static inline bool
-HasBoxedOrUnboxedDenseElements(JSObject* obj)
-{
- if (Type == JSVAL_TYPE_MAGIC)
- return obj->isNative();
- return obj->is<UnboxedArrayObject>() && obj->as<UnboxedArrayObject>().elementType() == Type;
-}
-
-template <JSValueType Type>
-static inline size_t
-GetBoxedOrUnboxedInitializedLength(JSObject* obj)
-{
- if (Type == JSVAL_TYPE_MAGIC)
- return obj->as<NativeObject>().getDenseInitializedLength();
- return obj->as<UnboxedArrayObject>().initializedLength();
-}
-
-template <JSValueType Type>
-static inline DenseElementResult
-SetBoxedOrUnboxedInitializedLength(JSContext* cx, JSObject* obj, size_t initlen)
-{
- size_t oldInitlen = GetBoxedOrUnboxedInitializedLength<Type>(obj);
- if (Type == JSVAL_TYPE_MAGIC) {
- obj->as<NativeObject>().setDenseInitializedLength(initlen);
- if (initlen < oldInitlen)
- obj->as<NativeObject>().shrinkElements(cx, initlen);
- } else {
- obj->as<UnboxedArrayObject>().setInitializedLength(initlen);
- if (initlen < oldInitlen)
- obj->as<UnboxedArrayObject>().shrinkElements(cx, initlen);
- }
- return DenseElementResult::Success;
-}
-
-template <JSValueType Type>
-static inline size_t
-GetBoxedOrUnboxedCapacity(JSObject* obj)
-{
- if (Type == JSVAL_TYPE_MAGIC)
- return obj->as<NativeObject>().getDenseCapacity();
- return obj->as<UnboxedArrayObject>().capacity();
-}
-
-template <JSValueType Type>
-static inline Value
-GetBoxedOrUnboxedDenseElement(JSObject* obj, size_t index)
-{
- if (Type == JSVAL_TYPE_MAGIC)
- return obj->as<NativeObject>().getDenseElement(index);
- return obj->as<UnboxedArrayObject>().getElementSpecific<Type>(index);
-}
-
-template <JSValueType Type>
-static inline void
-SetBoxedOrUnboxedDenseElementNoTypeChange(JSObject* obj, size_t index, const Value& value)
-{
- if (Type == JSVAL_TYPE_MAGIC)
- obj->as<NativeObject>().setDenseElement(index, value);
- else
- obj->as<UnboxedArrayObject>().setElementNoTypeChangeSpecific<Type>(index, value);
-}
-
-template <JSValueType Type>
-static inline bool
-SetBoxedOrUnboxedDenseElement(JSContext* cx, JSObject* obj, size_t index, const Value& value)
-{
- if (Type == JSVAL_TYPE_MAGIC) {
- obj->as<NativeObject>().setDenseElementWithType(cx, index, value);
- return true;
- }
- return obj->as<UnboxedArrayObject>().setElementSpecific<Type>(cx, index, value);
-}
-
-template <JSValueType Type>
-static inline DenseElementResult
-EnsureBoxedOrUnboxedDenseElements(JSContext* cx, JSObject* obj, size_t count)
-{
- if (Type == JSVAL_TYPE_MAGIC) {
- if (!obj->as<ArrayObject>().ensureElements(cx, count))
- return DenseElementResult::Failure;
- } else {
- if (obj->as<UnboxedArrayObject>().capacity() < count) {
- if (!obj->as<UnboxedArrayObject>().growElements(cx, count))
- return DenseElementResult::Failure;
- }
- }
- return DenseElementResult::Success;
-}
-
-template <JSValueType Type>
-static inline DenseElementResult
-SetOrExtendBoxedOrUnboxedDenseElements(ExclusiveContext* cx, JSObject* obj,
- uint32_t start, const Value* vp, uint32_t count,
- ShouldUpdateTypes updateTypes = ShouldUpdateTypes::Update)
-{
- if (Type == JSVAL_TYPE_MAGIC) {
- NativeObject* nobj = &obj->as<NativeObject>();
-
- if (nobj->denseElementsAreFrozen())
- return DenseElementResult::Incomplete;
-
- if (obj->is<ArrayObject>() &&
- !obj->as<ArrayObject>().lengthIsWritable() &&
- start + count >= obj->as<ArrayObject>().length())
- {
- return DenseElementResult::Incomplete;
- }
-
- DenseElementResult result = nobj->ensureDenseElements(cx, start, count);
- if (result != DenseElementResult::Success)
- return result;
-
- if (obj->is<ArrayObject>() && start + count >= obj->as<ArrayObject>().length())
- obj->as<ArrayObject>().setLengthInt32(start + count);
-
- if (updateTypes == ShouldUpdateTypes::DontUpdate && !nobj->shouldConvertDoubleElements()) {
- nobj->copyDenseElements(start, vp, count);
- } else {
- for (size_t i = 0; i < count; i++)
- nobj->setDenseElementWithType(cx, start + i, vp[i]);
- }
-
- return DenseElementResult::Success;
- }
-
- UnboxedArrayObject* nobj = &obj->as<UnboxedArrayObject>();
-
- if (start > nobj->initializedLength())
- return DenseElementResult::Incomplete;
-
- if (start + count >= UnboxedArrayObject::MaximumCapacity)
- return DenseElementResult::Incomplete;
-
- if (start + count > nobj->capacity() && !nobj->growElements(cx, start + count))
- return DenseElementResult::Failure;
-
- size_t oldInitlen = nobj->initializedLength();
-
- // Overwrite any existing elements covered by the new range. If we fail
- // after this point due to some incompatible type being written to the
- // object's elements, afterwards the contents will be different from when
- // we started. The caller must retry the operation using a generic path,
- // which will overwrite the already-modified elements as well as the ones
- // that were left alone.
- size_t i = 0;
- if (updateTypes == ShouldUpdateTypes::DontUpdate) {
- for (size_t j = start; i < count && j < oldInitlen; i++, j++)
- nobj->setElementNoTypeChangeSpecific<Type>(j, vp[i]);
- } else {
- for (size_t j = start; i < count && j < oldInitlen; i++, j++) {
- if (!nobj->setElementSpecific<Type>(cx, j, vp[i]))
- return DenseElementResult::Incomplete;
- }
- }
-
- if (i != count) {
- obj->as<UnboxedArrayObject>().setInitializedLength(start + count);
- if (updateTypes == ShouldUpdateTypes::DontUpdate) {
- for (; i < count; i++)
- nobj->initElementNoTypeChangeSpecific<Type>(start + i, vp[i]);
- } else {
- for (; i < count; i++) {
- if (!nobj->initElementSpecific<Type>(cx, start + i, vp[i])) {
- nobj->setInitializedLengthNoBarrier(oldInitlen);
- return DenseElementResult::Incomplete;
- }
- }
- }
- }
-
- if (start + count >= nobj->length())
- nobj->setLength(cx, start + count);
-
- return DenseElementResult::Success;
-}
-
-template <JSValueType Type>
-static inline DenseElementResult
-MoveBoxedOrUnboxedDenseElements(JSContext* cx, JSObject* obj, uint32_t dstStart, uint32_t srcStart,
- uint32_t length)
-{
- MOZ_ASSERT(HasBoxedOrUnboxedDenseElements<Type>(obj));
-
- if (Type == JSVAL_TYPE_MAGIC) {
- if (obj->as<NativeObject>().denseElementsAreFrozen())
- return DenseElementResult::Incomplete;
-
- if (!obj->as<NativeObject>().maybeCopyElementsForWrite(cx))
- return DenseElementResult::Failure;
- obj->as<NativeObject>().moveDenseElements(dstStart, srcStart, length);
- } else {
- uint8_t* data = obj->as<UnboxedArrayObject>().elements();
- size_t elementSize = UnboxedTypeSize(Type);
-
- if (UnboxedTypeNeedsPreBarrier(Type) &&
- JS::shadow::Zone::asShadowZone(obj->zone())->needsIncrementalBarrier())
- {
- // Trigger pre barriers on any elements we are overwriting. See
- // NativeObject::moveDenseElements. No post barrier is needed as
- // only whole cell post barriers are used with unboxed objects.
- for (size_t i = 0; i < length; i++)
- obj->as<UnboxedArrayObject>().triggerPreBarrier<Type>(dstStart + i);
- }
-
- memmove(data + dstStart * elementSize,
- data + srcStart * elementSize,
- length * elementSize);
- }
-
- return DenseElementResult::Success;
-}
-
-template <JSValueType DstType, JSValueType SrcType>
-static inline DenseElementResult
-CopyBoxedOrUnboxedDenseElements(JSContext* cx, JSObject* dst, JSObject* src,
- uint32_t dstStart, uint32_t srcStart, uint32_t length)
-{
- MOZ_ASSERT(HasBoxedOrUnboxedDenseElements<SrcType>(src));
- MOZ_ASSERT(HasBoxedOrUnboxedDenseElements<DstType>(dst));
- MOZ_ASSERT(GetBoxedOrUnboxedInitializedLength<DstType>(dst) == dstStart);
- MOZ_ASSERT(GetBoxedOrUnboxedInitializedLength<SrcType>(src) >= srcStart + length);
- MOZ_ASSERT(GetBoxedOrUnboxedCapacity<DstType>(dst) >= dstStart + length);
-
- SetBoxedOrUnboxedInitializedLength<DstType>(cx, dst, dstStart + length);
-
- if (DstType == JSVAL_TYPE_MAGIC) {
- if (SrcType == JSVAL_TYPE_MAGIC) {
- const Value* vp = src->as<NativeObject>().getDenseElements() + srcStart;
- dst->as<NativeObject>().initDenseElements(dstStart, vp, length);
- } else {
- for (size_t i = 0; i < length; i++) {
- Value v = GetBoxedOrUnboxedDenseElement<SrcType>(src, srcStart + i);
- dst->as<NativeObject>().initDenseElement(dstStart + i, v);
- }
- }
- } else if (DstType == SrcType) {
- uint8_t* dstData = dst->as<UnboxedArrayObject>().elements();
- uint8_t* srcData = src->as<UnboxedArrayObject>().elements();
- size_t elementSize = UnboxedTypeSize(DstType);
-
- memcpy(dstData + dstStart * elementSize,
- srcData + srcStart * elementSize,
- length * elementSize);
-
- // Add a store buffer entry if we might have copied a nursery pointer to dst.
- if (UnboxedTypeNeedsPostBarrier(DstType) && !IsInsideNursery(dst))
- dst->runtimeFromMainThread()->gc.storeBuffer.putWholeCell(dst);
- } else if (DstType == JSVAL_TYPE_DOUBLE && SrcType == JSVAL_TYPE_INT32) {
- uint8_t* dstData = dst->as<UnboxedArrayObject>().elements();
- uint8_t* srcData = src->as<UnboxedArrayObject>().elements();
-
- for (size_t i = 0; i < length; i++) {
- int32_t v = *reinterpret_cast<int32_t*>(srcData + (srcStart + i) * sizeof(int32_t));
- *reinterpret_cast<double*>(dstData + (dstStart + i) * sizeof(double)) = v;
- }
- } else {
- for (size_t i = 0; i < length; i++) {
- Value v = GetBoxedOrUnboxedDenseElement<SrcType>(src, srcStart + i);
- dst->as<UnboxedArrayObject>().initElementNoTypeChangeSpecific<DstType>(dstStart + i, v);
- }
- }
-
- return DenseElementResult::Success;
-}
-
-/////////////////////////////////////////////////////////////////////
-// Dispatch to specialized methods based on the type of an object.
-/////////////////////////////////////////////////////////////////////
-
-// Goop to fix MSVC. See DispatchTraceKindTyped in TraceKind.h.
-// The clang-cl front end defines _MSC_VER, but still requires the explicit
-// template declaration, so we must test for __clang__ here as well.
-#if defined(_MSC_VER) && !defined(__clang__)
-# define DEPENDENT_TEMPLATE_HINT
-#else
-# define DEPENDENT_TEMPLATE_HINT template
-#endif
-
-// Function to dispatch a method specialized to whatever boxed or unboxed dense
-// elements which an input object has.
-template <typename F>
-DenseElementResult
-CallBoxedOrUnboxedSpecialization(F f, JSObject* obj)
-{
- if (!HasAnyBoxedOrUnboxedDenseElements(obj))
- return DenseElementResult::Incomplete;
- switch (GetBoxedOrUnboxedType(obj)) {
- case JSVAL_TYPE_MAGIC:
- return f. DEPENDENT_TEMPLATE_HINT operator()<JSVAL_TYPE_MAGIC>();
- case JSVAL_TYPE_BOOLEAN:
- return f. DEPENDENT_TEMPLATE_HINT operator()<JSVAL_TYPE_BOOLEAN>();
- case JSVAL_TYPE_INT32:
- return f. DEPENDENT_TEMPLATE_HINT operator()<JSVAL_TYPE_INT32>();
- case JSVAL_TYPE_DOUBLE:
- return f. DEPENDENT_TEMPLATE_HINT operator()<JSVAL_TYPE_DOUBLE>();
- case JSVAL_TYPE_STRING:
- return f. DEPENDENT_TEMPLATE_HINT operator()<JSVAL_TYPE_STRING>();
- case JSVAL_TYPE_OBJECT:
- return f. DEPENDENT_TEMPLATE_HINT operator()<JSVAL_TYPE_OBJECT>();
- default:
- MOZ_CRASH();
- }
-}
-
-// As above, except the specialization can reflect the unboxed type of two objects.
-template <typename F>
-DenseElementResult
-CallBoxedOrUnboxedSpecialization(F f, JSObject* obj1, JSObject* obj2)
-{
- if (!HasAnyBoxedOrUnboxedDenseElements(obj1) || !HasAnyBoxedOrUnboxedDenseElements(obj2))
- return DenseElementResult::Incomplete;
-
-#define SPECIALIZE_OBJ2(TYPE) \
- switch (GetBoxedOrUnboxedType(obj2)) { \
- case JSVAL_TYPE_MAGIC: \
- return f. DEPENDENT_TEMPLATE_HINT operator()<TYPE, JSVAL_TYPE_MAGIC>(); \
- case JSVAL_TYPE_BOOLEAN: \
- return f. DEPENDENT_TEMPLATE_HINT operator()<TYPE, JSVAL_TYPE_BOOLEAN>(); \
- case JSVAL_TYPE_INT32: \
- return f. DEPENDENT_TEMPLATE_HINT operator()<TYPE, JSVAL_TYPE_INT32>(); \
- case JSVAL_TYPE_DOUBLE: \
- return f. DEPENDENT_TEMPLATE_HINT operator()<TYPE, JSVAL_TYPE_DOUBLE>(); \
- case JSVAL_TYPE_STRING: \
- return f. DEPENDENT_TEMPLATE_HINT operator()<TYPE, JSVAL_TYPE_STRING>(); \
- case JSVAL_TYPE_OBJECT: \
- return f. DEPENDENT_TEMPLATE_HINT operator()<TYPE, JSVAL_TYPE_OBJECT>(); \
- default: \
- MOZ_CRASH(); \
- }
-
- switch (GetBoxedOrUnboxedType(obj1)) {
- case JSVAL_TYPE_MAGIC:
- SPECIALIZE_OBJ2(JSVAL_TYPE_MAGIC)
- case JSVAL_TYPE_BOOLEAN:
- SPECIALIZE_OBJ2(JSVAL_TYPE_BOOLEAN)
- case JSVAL_TYPE_INT32:
- SPECIALIZE_OBJ2(JSVAL_TYPE_INT32)
- case JSVAL_TYPE_DOUBLE:
- SPECIALIZE_OBJ2(JSVAL_TYPE_DOUBLE)
- case JSVAL_TYPE_STRING:
- SPECIALIZE_OBJ2(JSVAL_TYPE_STRING)
- case JSVAL_TYPE_OBJECT:
- SPECIALIZE_OBJ2(JSVAL_TYPE_OBJECT)
- default:
- MOZ_CRASH();
- }
-
-#undef SPECIALIZE_OBJ2
-}
-
-#undef DEPENDENT_TEMPLATE_HINT
-
-#define DefineBoxedOrUnboxedFunctor1(Signature, A) \
-struct Signature ## Functor { \
- A a; \
- explicit Signature ## Functor(A a) \
- : a(a) \
- {} \
- template <JSValueType Type> \
- DenseElementResult operator()() { \
- return Signature<Type>(a); \
- } \
-}
-
-#define DefineBoxedOrUnboxedFunctor3(Signature, A, B, C) \
-struct Signature ## Functor { \
- A a; B b; C c; \
- Signature ## Functor(A a, B b, C c) \
- : a(a), b(b), c(c) \
- {} \
- template <JSValueType Type> \
- DenseElementResult operator()() { \
- return Signature<Type>(a, b, c); \
- } \
-}
-
-#define DefineBoxedOrUnboxedFunctor4(Signature, A, B, C, D) \
-struct Signature ## Functor { \
- A a; B b; C c; D d; \
- Signature ## Functor(A a, B b, C c, D d) \
- : a(a), b(b), c(c), d(d) \
- {} \
- template <JSValueType Type> \
- DenseElementResult operator()() { \
- return Signature<Type>(a, b, c, d); \
- } \
-}
-
-#define DefineBoxedOrUnboxedFunctorPair4(Signature, A, B, C, D) \
-struct Signature ## Functor { \
- A a; B b; C c; D d; \
- Signature ## Functor(A a, B b, C c, D d) \
- : a(a), b(b), c(c), d(d) \
- {} \
- template <JSValueType TypeOne, JSValueType TypeTwo> \
- DenseElementResult operator()() { \
- return Signature<TypeOne, TypeTwo>(a, b, c, d); \
- } \
-}
-
-#define DefineBoxedOrUnboxedFunctor5(Signature, A, B, C, D, E) \
-struct Signature ## Functor { \
- A a; B b; C c; D d; E e; \
- Signature ## Functor(A a, B b, C c, D d, E e) \
- : a(a), b(b), c(c), d(d), e(e) \
- {} \
- template <JSValueType Type> \
- DenseElementResult operator()() { \
- return Signature<Type>(a, b, c, d, e); \
- } \
-}
-
-#define DefineBoxedOrUnboxedFunctor6(Signature, A, B, C, D, E, F) \
-struct Signature ## Functor { \
- A a; B b; C c; D d; E e; F f; \
- Signature ## Functor(A a, B b, C c, D d, E e, F f) \
- : a(a), b(b), c(c), d(d), e(e), f(f) \
- {} \
- template <JSValueType Type> \
- DenseElementResult operator()() { \
- return Signature<Type>(a, b, c, d, e, f); \
- } \
-}
-
-#define DefineBoxedOrUnboxedFunctorPair6(Signature, A, B, C, D, E, F) \
-struct Signature ## Functor { \
- A a; B b; C c; D d; E e; F f; \
- Signature ## Functor(A a, B b, C c, D d, E e, F f) \
- : a(a), b(b), c(c), d(d), e(e), f(f) \
- {} \
- template <JSValueType TypeOne, JSValueType TypeTwo> \
- DenseElementResult operator()() { \
- return Signature<TypeOne, TypeTwo>(a, b, c, d, e, f); \
- } \
-}
-
-DenseElementResult
-SetOrExtendAnyBoxedOrUnboxedDenseElements(ExclusiveContext* cx, JSObject* obj,
- uint32_t start, const Value* vp, uint32_t count,
- ShouldUpdateTypes updateTypes = ShouldUpdateTypes::Update);
-
-DenseElementResult
-MoveAnyBoxedOrUnboxedDenseElements(JSContext* cx, JSObject* obj,
- uint32_t dstStart, uint32_t srcStart, uint32_t length);
-
-DenseElementResult
-CopyAnyBoxedOrUnboxedDenseElements(JSContext* cx, JSObject* dst, JSObject* src,
- uint32_t dstStart, uint32_t srcStart, uint32_t length);
-
-void
-SetAnyBoxedOrUnboxedInitializedLength(JSContext* cx, JSObject* obj, size_t initlen);
-
-DenseElementResult
-EnsureAnyBoxedOrUnboxedDenseElements(JSContext* cx, JSObject* obj, size_t count);
-
-} // namespace js
-
-#endif // vm_UnboxedObject_inl_h
diff --git a/js/src/vm/UnboxedObject.cpp b/js/src/vm/UnboxedObject.cpp
deleted file mode 100644
index 3018ace67..000000000
--- a/js/src/vm/UnboxedObject.cpp
+++ /dev/null
@@ -1,2152 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- * vim: set ts=8 sts=4 et sw=4 tw=99:
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "vm/UnboxedObject-inl.h"
-
-#include "jit/BaselineIC.h"
-#include "jit/ExecutableAllocator.h"
-#include "jit/JitCommon.h"
-#include "jit/Linker.h"
-
-#include "jsobjinlines.h"
-
-#include "gc/Nursery-inl.h"
-#include "jit/MacroAssembler-inl.h"
-#include "vm/Shape-inl.h"
-
-using mozilla::ArrayLength;
-using mozilla::DebugOnly;
-using mozilla::PodCopy;
-
-using namespace js;
-
-/////////////////////////////////////////////////////////////////////
-// UnboxedLayout
-/////////////////////////////////////////////////////////////////////
-
-void
-UnboxedLayout::trace(JSTracer* trc)
-{
- for (size_t i = 0; i < properties_.length(); i++)
- TraceManuallyBarrieredEdge(trc, &properties_[i].name, "unboxed_layout_name");
-
- if (newScript())
- newScript()->trace(trc);
-
- TraceNullableEdge(trc, &nativeGroup_, "unboxed_layout_nativeGroup");
- TraceNullableEdge(trc, &nativeShape_, "unboxed_layout_nativeShape");
- TraceNullableEdge(trc, &allocationScript_, "unboxed_layout_allocationScript");
- TraceNullableEdge(trc, &replacementGroup_, "unboxed_layout_replacementGroup");
- TraceNullableEdge(trc, &constructorCode_, "unboxed_layout_constructorCode");
-}
-
-size_t
-UnboxedLayout::sizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf)
-{
- return mallocSizeOf(this)
- + properties_.sizeOfExcludingThis(mallocSizeOf)
- + (newScript() ? newScript()->sizeOfIncludingThis(mallocSizeOf) : 0)
- + mallocSizeOf(traceList());
-}
-
-void
-UnboxedLayout::setNewScript(TypeNewScript* newScript, bool writeBarrier /* = true */)
-{
- if (newScript_ && writeBarrier)
- TypeNewScript::writeBarrierPre(newScript_);
- newScript_ = newScript;
-}
-
-// Constructor code returns a 0x1 value to indicate the constructor code should
-// be cleared.
-static const uintptr_t CLEAR_CONSTRUCTOR_CODE_TOKEN = 0x1;
-
-/* static */ bool
-UnboxedLayout::makeConstructorCode(JSContext* cx, HandleObjectGroup group)
-{
- gc::AutoSuppressGC suppress(cx);
-
- using namespace jit;
-
- if (!cx->compartment()->ensureJitCompartmentExists(cx))
- return false;
-
- UnboxedLayout& layout = group->unboxedLayout();
- MOZ_ASSERT(!layout.constructorCode());
-
- UnboxedPlainObject* templateObject = UnboxedPlainObject::create(cx, group, TenuredObject);
- if (!templateObject)
- return false;
-
- JitContext jitContext(cx, nullptr);
-
- MacroAssembler masm;
-
- Register propertiesReg, newKindReg;
-#ifdef JS_CODEGEN_X86
- propertiesReg = eax;
- newKindReg = ecx;
- masm.loadPtr(Address(masm.getStackPointer(), sizeof(void*)), propertiesReg);
- masm.loadPtr(Address(masm.getStackPointer(), 2 * sizeof(void*)), newKindReg);
-#else
- propertiesReg = IntArgReg0;
- newKindReg = IntArgReg1;
-#endif
-
-#ifdef JS_CODEGEN_ARM64
- // ARM64 communicates stack address via sp, but uses a pseudo-sp for addressing.
- masm.initStackPtr();
-#endif
-
- MOZ_ASSERT(propertiesReg.volatile_());
- MOZ_ASSERT(newKindReg.volatile_());
-
- AllocatableGeneralRegisterSet regs(GeneralRegisterSet::All());
- regs.take(propertiesReg);
- regs.take(newKindReg);
- Register object = regs.takeAny(), scratch1 = regs.takeAny(), scratch2 = regs.takeAny();
-
- LiveGeneralRegisterSet savedNonVolatileRegisters = SavedNonVolatileRegisters(regs);
- masm.PushRegsInMask(savedNonVolatileRegisters);
-
- // The scratch double register might be used by MacroAssembler methods.
- if (ScratchDoubleReg.volatile_())
- masm.push(ScratchDoubleReg);
-
- Label failure, tenuredObject, allocated;
- masm.branch32(Assembler::NotEqual, newKindReg, Imm32(GenericObject), &tenuredObject);
- masm.branchTest32(Assembler::NonZero, AbsoluteAddress(group->addressOfFlags()),
- Imm32(OBJECT_FLAG_PRE_TENURE), &tenuredObject);
-
- // Allocate an object in the nursery
- masm.createGCObject(object, scratch1, templateObject, gc::DefaultHeap, &failure,
- /* initFixedSlots = */ false);
-
- masm.jump(&allocated);
- masm.bind(&tenuredObject);
-
- // Allocate an object in the tenured heap.
- masm.createGCObject(object, scratch1, templateObject, gc::TenuredHeap, &failure,
- /* initFixedSlots = */ false);
-
- // If any of the properties being stored are in the nursery, add a store
- // buffer entry for the new object.
- Label postBarrier;
- for (size_t i = 0; i < layout.properties().length(); i++) {
- const UnboxedLayout::Property& property = layout.properties()[i];
- if (property.type == JSVAL_TYPE_OBJECT) {
- Address valueAddress(propertiesReg, i * sizeof(IdValuePair) + offsetof(IdValuePair, value));
- Label notObject;
- masm.branchTestObject(Assembler::NotEqual, valueAddress, &notObject);
- Register valueObject = masm.extractObject(valueAddress, scratch1);
- masm.branchPtrInNurseryChunk(Assembler::Equal, valueObject, scratch2, &postBarrier);
- masm.bind(&notObject);
- }
- }
-
- masm.jump(&allocated);
- masm.bind(&postBarrier);
-
- LiveGeneralRegisterSet liveVolatileRegisters;
- liveVolatileRegisters.add(propertiesReg);
- if (object.volatile_())
- liveVolatileRegisters.add(object);
- masm.PushRegsInMask(liveVolatileRegisters);
-
- masm.mov(ImmPtr(cx->runtime()), scratch1);
- masm.setupUnalignedABICall(scratch2);
- masm.passABIArg(scratch1);
- masm.passABIArg(object);
- masm.callWithABI(JS_FUNC_TO_DATA_PTR(void*, PostWriteBarrier));
-
- masm.PopRegsInMask(liveVolatileRegisters);
-
- masm.bind(&allocated);
-
- ValueOperand valueOperand;
-#ifdef JS_NUNBOX32
- valueOperand = ValueOperand(scratch1, scratch2);
-#else
- valueOperand = ValueOperand(scratch1);
-#endif
-
- Label failureStoreOther, failureStoreObject;
-
- for (size_t i = 0; i < layout.properties().length(); i++) {
- const UnboxedLayout::Property& property = layout.properties()[i];
- Address valueAddress(propertiesReg, i * sizeof(IdValuePair) + offsetof(IdValuePair, value));
- Address targetAddress(object, UnboxedPlainObject::offsetOfData() + property.offset);
-
- masm.loadValue(valueAddress, valueOperand);
-
- if (property.type == JSVAL_TYPE_OBJECT) {
- HeapTypeSet* types = group->maybeGetProperty(IdToTypeId(NameToId(property.name)));
-
- Label notObject;
- masm.branchTestObject(Assembler::NotEqual, valueOperand,
- types->mightBeMIRType(MIRType::Null) ? &notObject : &failureStoreObject);
-
- Register payloadReg = masm.extractObject(valueOperand, scratch1);
-
- if (!types->hasType(TypeSet::AnyObjectType())) {
- Register scratch = (payloadReg == scratch1) ? scratch2 : scratch1;
- masm.guardObjectType(payloadReg, types, scratch, &failureStoreObject);
- }
-
- masm.storeUnboxedProperty(targetAddress, JSVAL_TYPE_OBJECT,
- TypedOrValueRegister(MIRType::Object,
- AnyRegister(payloadReg)), nullptr);
-
- if (notObject.used()) {
- Label done;
- masm.jump(&done);
- masm.bind(&notObject);
- masm.branchTestNull(Assembler::NotEqual, valueOperand, &failureStoreOther);
- masm.storeUnboxedProperty(targetAddress, JSVAL_TYPE_OBJECT, NullValue(), nullptr);
- masm.bind(&done);
- }
- } else {
- masm.storeUnboxedProperty(targetAddress, property.type,
- ConstantOrRegister(valueOperand), &failureStoreOther);
- }
- }
-
- Label done;
- masm.bind(&done);
-
- if (object != ReturnReg)
- masm.movePtr(object, ReturnReg);
-
- // Restore non-volatile registers which were saved on entry.
- if (ScratchDoubleReg.volatile_())
- masm.pop(ScratchDoubleReg);
- masm.PopRegsInMask(savedNonVolatileRegisters);
-
- masm.abiret();
-
- masm.bind(&failureStoreOther);
-
- // There was a failure while storing a value which cannot be stored at all
- // in the unboxed object. Initialize the object so it is safe for GC and
- // return null.
- masm.initUnboxedObjectContents(object, templateObject);
-
- masm.bind(&failure);
-
- masm.movePtr(ImmWord(0), object);
- masm.jump(&done);
-
- masm.bind(&failureStoreObject);
-
- // There was a failure while storing a value to an object slot of the
- // unboxed object. If the value is storable, the failure occurred due to
- // incomplete type information in the object, so return a token to trigger
- // regeneration of the jitcode after a new object is created in the VM.
- {
- Label isObject;
- masm.branchTestObject(Assembler::Equal, valueOperand, &isObject);
- masm.branchTestNull(Assembler::NotEqual, valueOperand, &failureStoreOther);
- masm.bind(&isObject);
- }
-
- // Initialize the object so it is safe for GC.
- masm.initUnboxedObjectContents(object, templateObject);
-
- masm.movePtr(ImmWord(CLEAR_CONSTRUCTOR_CODE_TOKEN), object);
- masm.jump(&done);
-
- Linker linker(masm);
- AutoFlushICache afc("UnboxedObject");
- JitCode* code = linker.newCode<NoGC>(cx, OTHER_CODE);
- if (!code)
- return false;
-
- layout.setConstructorCode(code);
- return true;
-}
-
-void
-UnboxedLayout::detachFromCompartment()
-{
- if (isInList())
- remove();
-}
-
-/////////////////////////////////////////////////////////////////////
-// UnboxedPlainObject
-/////////////////////////////////////////////////////////////////////
-
-bool
-UnboxedPlainObject::setValue(ExclusiveContext* cx, const UnboxedLayout::Property& property,
- const Value& v)
-{
- uint8_t* p = &data_[property.offset];
- return SetUnboxedValue(cx, this, NameToId(property.name), p, property.type, v,
- /* preBarrier = */ true);
-}
-
-Value
-UnboxedPlainObject::getValue(const UnboxedLayout::Property& property,
- bool maybeUninitialized /* = false */)
-{
- uint8_t* p = &data_[property.offset];
- return GetUnboxedValue(p, property.type, maybeUninitialized);
-}
-
-void
-UnboxedPlainObject::trace(JSTracer* trc, JSObject* obj)
-{
- if (obj->as<UnboxedPlainObject>().expando_) {
- TraceManuallyBarrieredEdge(trc,
- reinterpret_cast<NativeObject**>(&obj->as<UnboxedPlainObject>().expando_),
- "unboxed_expando");
- }
-
- const UnboxedLayout& layout = obj->as<UnboxedPlainObject>().layoutDontCheckGeneration();
- const int32_t* list = layout.traceList();
- if (!list)
- return;
-
- uint8_t* data = obj->as<UnboxedPlainObject>().data();
- while (*list != -1) {
- GCPtrString* heap = reinterpret_cast<GCPtrString*>(data + *list);
- TraceEdge(trc, heap, "unboxed_string");
- list++;
- }
- list++;
- while (*list != -1) {
- GCPtrObject* heap = reinterpret_cast<GCPtrObject*>(data + *list);
- TraceNullableEdge(trc, heap, "unboxed_object");
- list++;
- }
-
- // Unboxed objects don't have Values to trace.
- MOZ_ASSERT(*(list + 1) == -1);
-}
-
-/* static */ UnboxedExpandoObject*
-UnboxedPlainObject::ensureExpando(JSContext* cx, Handle<UnboxedPlainObject*> obj)
-{
- if (obj->expando_)
- return obj->expando_;
-
- UnboxedExpandoObject* expando =
- NewObjectWithGivenProto<UnboxedExpandoObject>(cx, nullptr, gc::AllocKind::OBJECT4);
- if (!expando)
- return nullptr;
-
- // Don't track property types for expando objects. This allows Baseline
- // and Ion AddSlot ICs to guard on the unboxed group without guarding on
- // the expando group.
- MarkObjectGroupUnknownProperties(cx, expando->group());
-
- // If the expando is tenured then the original object must also be tenured.
- // Otherwise barriers triggered on the original object for writes to the
- // expando (as can happen in the JIT) won't see the tenured->nursery edge.
- // See WholeCellEdges::mark.
- MOZ_ASSERT_IF(!IsInsideNursery(expando), !IsInsideNursery(obj));
-
- // As with setValue(), we need to manually trigger post barriers on the
- // whole object. If we treat the field as a GCPtrObject and later
- // convert the object to its native representation, we will end up with a
- // corrupted store buffer entry.
- if (IsInsideNursery(expando) && !IsInsideNursery(obj))
- cx->runtime()->gc.storeBuffer.putWholeCell(obj);
-
- obj->expando_ = expando;
- return expando;
-}
-
-bool
-UnboxedPlainObject::containsUnboxedOrExpandoProperty(ExclusiveContext* cx, jsid id) const
-{
- if (layout().lookup(id))
- return true;
-
- if (maybeExpando() && maybeExpando()->containsShapeOrElement(cx, id))
- return true;
-
- return false;
-}
-
-static bool
-PropagatePropertyTypes(JSContext* cx, jsid id, ObjectGroup* oldGroup, ObjectGroup* newGroup)
-{
- HeapTypeSet* typeProperty = oldGroup->maybeGetProperty(id);
- TypeSet::TypeList types;
- if (!typeProperty->enumerateTypes(&types)) {
- ReportOutOfMemory(cx);
- return false;
- }
- for (size_t j = 0; j < types.length(); j++)
- AddTypePropertyId(cx, newGroup, nullptr, id, types[j]);
- return true;
-}
-
-static PlainObject*
-MakeReplacementTemplateObject(JSContext* cx, HandleObjectGroup group, const UnboxedLayout &layout)
-{
- PlainObject* obj = NewObjectWithGroup<PlainObject>(cx, group, layout.getAllocKind(),
- TenuredObject);
- if (!obj)
- return nullptr;
-
- for (size_t i = 0; i < layout.properties().length(); i++) {
- const UnboxedLayout::Property& property = layout.properties()[i];
- if (!obj->addDataProperty(cx, NameToId(property.name), i, JSPROP_ENUMERATE))
- return nullptr;
- MOZ_ASSERT(obj->slotSpan() == i + 1);
- MOZ_ASSERT(!obj->inDictionaryMode());
- }
-
- return obj;
-}
-
-/* static */ bool
-UnboxedLayout::makeNativeGroup(JSContext* cx, ObjectGroup* group)
-{
- AutoEnterAnalysis enter(cx);
-
- UnboxedLayout& layout = group->unboxedLayout();
- Rooted<TaggedProto> proto(cx, group->proto());
-
- MOZ_ASSERT(!layout.nativeGroup());
-
- RootedObjectGroup replacementGroup(cx);
-
- const Class* clasp = layout.isArray() ? &ArrayObject::class_ : &PlainObject::class_;
-
- // Immediately clear any new script on the group. This is done by replacing
- // the existing new script with one for a replacement default new group.
- // This is done so that the size of the replacment group's objects is the
- // same as that for the unboxed group, so that we do not see polymorphic
- // slot accesses later on for sites that see converted objects from this
- // group and objects that were allocated using the replacement new group.
- if (layout.newScript()) {
- MOZ_ASSERT(!layout.isArray());
-
- replacementGroup = ObjectGroupCompartment::makeGroup(cx, &PlainObject::class_, proto);
- if (!replacementGroup)
- return false;
-
- PlainObject* templateObject = MakeReplacementTemplateObject(cx, replacementGroup, layout);
- if (!templateObject)
- return false;
-
- TypeNewScript* replacementNewScript =
- TypeNewScript::makeNativeVersion(cx, layout.newScript(), templateObject);
- if (!replacementNewScript)
- return false;
-
- replacementGroup->setNewScript(replacementNewScript);
- gc::TraceTypeNewScript(replacementGroup);
-
- group->clearNewScript(cx, replacementGroup);
- }
-
- // Similarly, if this group is keyed to an allocation site, replace its
- // entry with a new group that has no unboxed layout.
- if (layout.allocationScript()) {
- RootedScript script(cx, layout.allocationScript());
- jsbytecode* pc = layout.allocationPc();
-
- replacementGroup = ObjectGroupCompartment::makeGroup(cx, clasp, proto);
- if (!replacementGroup)
- return false;
-
- PlainObject* templateObject = &script->getObject(pc)->as<PlainObject>();
- replacementGroup->addDefiniteProperties(cx, templateObject->lastProperty());
-
- JSProtoKey key = layout.isArray() ? JSProto_Array : JSProto_Object;
- cx->compartment()->objectGroups.replaceAllocationSiteGroup(script, pc, key,
- replacementGroup);
-
- // Clear any baseline information at this opcode which might use the old group.
- if (script->hasBaselineScript()) {
- jit::ICEntry& entry = script->baselineScript()->icEntryFromPCOffset(script->pcToOffset(pc));
- jit::ICFallbackStub* fallback = entry.fallbackStub();
- for (jit::ICStubIterator iter = fallback->beginChain(); !iter.atEnd(); iter++)
- iter.unlink(cx);
- if (fallback->isNewObject_Fallback())
- fallback->toNewObject_Fallback()->setTemplateObject(nullptr);
- else if (fallback->isNewArray_Fallback())
- fallback->toNewArray_Fallback()->setTemplateGroup(replacementGroup);
- }
- }
-
- size_t nfixed = layout.isArray() ? 0 : gc::GetGCKindSlots(layout.getAllocKind());
-
- if (layout.isArray()) {
- // The length shape to use for arrays is cached via a modified initial
- // shape for array objects. Create an array now to make sure this entry
- // is instantiated.
- if (!NewDenseEmptyArray(cx))
- return false;
- }
-
- RootedShape shape(cx, EmptyShape::getInitialShape(cx, clasp, proto, nfixed, 0));
- if (!shape)
- return false;
-
- MOZ_ASSERT_IF(layout.isArray(), !shape->isEmptyShape() && shape->slotSpan() == 0);
-
- // Add shapes for each property, if this is for a plain object.
- for (size_t i = 0; i < layout.properties().length(); i++) {
- const UnboxedLayout::Property& property = layout.properties()[i];
-
- Rooted<StackShape> child(cx, StackShape(shape->base()->unowned(), NameToId(property.name),
- i, JSPROP_ENUMERATE, 0));
- shape = cx->zone()->propertyTree.getChild(cx, shape, child);
- if (!shape)
- return false;
- }
-
- ObjectGroup* nativeGroup =
- ObjectGroupCompartment::makeGroup(cx, clasp, proto,
- group->flags() & OBJECT_FLAG_DYNAMIC_MASK);
- if (!nativeGroup)
- return false;
-
- // No sense propagating if we don't know what we started with.
- if (!group->unknownProperties()) {
- // Propagate all property types from the old group to the new group.
- if (layout.isArray()) {
- if (!PropagatePropertyTypes(cx, JSID_VOID, group, nativeGroup))
- return false;
- } else {
- for (size_t i = 0; i < layout.properties().length(); i++) {
- const UnboxedLayout::Property& property = layout.properties()[i];
- jsid id = NameToId(property.name);
- if (!PropagatePropertyTypes(cx, id, group, nativeGroup))
- return false;
-
- // If we are OOM we may not be able to propagate properties.
- if (nativeGroup->unknownProperties())
- break;
-
- HeapTypeSet* nativeProperty = nativeGroup->maybeGetProperty(id);
- if (nativeProperty && nativeProperty->canSetDefinite(i))
- nativeProperty->setDefinite(i);
- }
- }
- } else {
- // If we skip, though, the new group had better agree.
- MOZ_ASSERT(nativeGroup->unknownProperties());
- }
-
- layout.nativeGroup_ = nativeGroup;
- layout.nativeShape_ = shape;
- layout.replacementGroup_ = replacementGroup;
-
- nativeGroup->setOriginalUnboxedGroup(group);
-
- group->markStateChange(cx);
-
- return true;
-}
-
-/* static */ bool
-UnboxedPlainObject::convertToNative(JSContext* cx, JSObject* obj)
-{
- const UnboxedLayout& layout = obj->as<UnboxedPlainObject>().layout();
- UnboxedExpandoObject* expando = obj->as<UnboxedPlainObject>().maybeExpando();
-
- if (!layout.nativeGroup()) {
- if (!UnboxedLayout::makeNativeGroup(cx, obj->group()))
- return false;
-
- // makeNativeGroup can reentrantly invoke this method.
- if (obj->is<PlainObject>())
- return true;
- }
-
- AutoValueVector values(cx);
- for (size_t i = 0; i < layout.properties().length(); i++) {
- // We might be reading properties off the object which have not been
- // initialized yet. Make sure any double values we read here are
- // canonicalized.
- if (!values.append(obj->as<UnboxedPlainObject>().getValue(layout.properties()[i], true)))
- return false;
- }
-
- // We are eliminating the expando edge with the conversion, so trigger a
- // pre barrier.
- JSObject::writeBarrierPre(expando);
-
- // Additionally trigger a post barrier on the expando itself. Whole cell
- // store buffer entries can be added on the original unboxed object for
- // writes to the expando (see WholeCellEdges::trace), so after conversion
- // we need to make sure the expando itself will still be traced.
- if (expando && !IsInsideNursery(expando))
- cx->runtime()->gc.storeBuffer.putWholeCell(expando);
-
- obj->setGroup(layout.nativeGroup());
- obj->as<PlainObject>().setLastPropertyMakeNative(cx, layout.nativeShape());
-
- for (size_t i = 0; i < values.length(); i++)
- obj->as<PlainObject>().initSlotUnchecked(i, values[i]);
-
- if (expando) {
- // Add properties from the expando object to the object, in order.
- // Suppress GC here, so that callers don't need to worry about this
- // method collecting. The stuff below can only fail due to OOM, in
- // which case the object will not have been completely filled back in.
- gc::AutoSuppressGC suppress(cx);
-
- Vector<jsid> ids(cx);
- for (Shape::Range<NoGC> r(expando->lastProperty()); !r.empty(); r.popFront()) {
- if (!ids.append(r.front().propid()))
- return false;
- }
- for (size_t i = 0; i < expando->getDenseInitializedLength(); i++) {
- if (!expando->getDenseElement(i).isMagic(JS_ELEMENTS_HOLE)) {
- if (!ids.append(INT_TO_JSID(i)))
- return false;
- }
- }
- ::Reverse(ids.begin(), ids.end());
-
- RootedPlainObject nobj(cx, &obj->as<PlainObject>());
- Rooted<UnboxedExpandoObject*> nexpando(cx, expando);
- RootedId id(cx);
- Rooted<PropertyDescriptor> desc(cx);
- for (size_t i = 0; i < ids.length(); i++) {
- id = ids[i];
- if (!GetOwnPropertyDescriptor(cx, nexpando, id, &desc))
- return false;
- ObjectOpResult result;
- if (!DefineProperty(cx, nobj, id, desc, result))
- return false;
- MOZ_ASSERT(result.ok());
- }
- }
-
- return true;
-}
-
-/* static */
-UnboxedPlainObject*
-UnboxedPlainObject::create(ExclusiveContext* cx, HandleObjectGroup group, NewObjectKind newKind)
-{
- AutoSetNewObjectMetadata metadata(cx);
-
- MOZ_ASSERT(group->clasp() == &class_);
- gc::AllocKind allocKind = group->unboxedLayout().getAllocKind();
-
- UnboxedPlainObject* res =
- NewObjectWithGroup<UnboxedPlainObject>(cx, group, allocKind, newKind);
- if (!res)
- return nullptr;
-
- // Overwrite the dummy shape which was written to the object's expando field.
- res->initExpando();
-
- // Initialize reference fields of the object. All fields in the object will
- // be overwritten shortly, but references need to be safe for the GC.
- const int32_t* list = res->layout().traceList();
- if (list) {
- uint8_t* data = res->data();
- while (*list != -1) {
- GCPtrString* heap = reinterpret_cast<GCPtrString*>(data + *list);
- heap->init(cx->names().empty);
- list++;
- }
- list++;
- while (*list != -1) {
- GCPtrObject* heap = reinterpret_cast<GCPtrObject*>(data + *list);
- heap->init(nullptr);
- list++;
- }
- // Unboxed objects don't have Values to initialize.
- MOZ_ASSERT(*(list + 1) == -1);
- }
-
- return res;
-}
-
-/* static */ JSObject*
-UnboxedPlainObject::createWithProperties(ExclusiveContext* cx, HandleObjectGroup group,
- NewObjectKind newKind, IdValuePair* properties)
-{
- MOZ_ASSERT(newKind == GenericObject || newKind == TenuredObject);
-
- UnboxedLayout& layout = group->unboxedLayout();
-
- if (layout.constructorCode()) {
- MOZ_ASSERT(cx->isJSContext());
-
- typedef JSObject* (*ConstructorCodeSignature)(IdValuePair*, NewObjectKind);
- ConstructorCodeSignature function =
- reinterpret_cast<ConstructorCodeSignature>(layout.constructorCode()->raw());
-
- JSObject* obj;
- {
- JS::AutoSuppressGCAnalysis nogc;
- obj = reinterpret_cast<JSObject*>(CALL_GENERATED_2(function, properties, newKind));
- }
- if (obj > reinterpret_cast<JSObject*>(CLEAR_CONSTRUCTOR_CODE_TOKEN))
- return obj;
-
- if (obj == reinterpret_cast<JSObject*>(CLEAR_CONSTRUCTOR_CODE_TOKEN))
- layout.setConstructorCode(nullptr);
- }
-
- UnboxedPlainObject* obj = UnboxedPlainObject::create(cx, group, newKind);
- if (!obj)
- return nullptr;
-
- for (size_t i = 0; i < layout.properties().length(); i++) {
- if (!obj->setValue(cx, layout.properties()[i], properties[i].value))
- return NewPlainObjectWithProperties(cx, properties, layout.properties().length(), newKind);
- }
-
-#ifndef JS_CODEGEN_NONE
- if (cx->isJSContext() &&
- !group->unknownProperties() &&
- !layout.constructorCode() &&
- cx->asJSContext()->runtime()->jitSupportsFloatingPoint &&
- jit::CanLikelyAllocateMoreExecutableMemory())
- {
- if (!UnboxedLayout::makeConstructorCode(cx->asJSContext(), group))
- return nullptr;
- }
-#endif
-
- return obj;
-}
-
-/* static */ bool
-UnboxedPlainObject::obj_lookupProperty(JSContext* cx, HandleObject obj,
- HandleId id, MutableHandleObject objp,
- MutableHandleShape propp)
-{
- if (obj->as<UnboxedPlainObject>().containsUnboxedOrExpandoProperty(cx, id)) {
- MarkNonNativePropertyFound<CanGC>(propp);
- objp.set(obj);
- return true;
- }
-
- RootedObject proto(cx, obj->staticPrototype());
- if (!proto) {
- objp.set(nullptr);
- propp.set(nullptr);
- return true;
- }
-
- return LookupProperty(cx, proto, id, objp, propp);
-}
-
-/* static */ bool
-UnboxedPlainObject::obj_defineProperty(JSContext* cx, HandleObject obj, HandleId id,
- Handle<PropertyDescriptor> desc,
- ObjectOpResult& result)
-{
- const UnboxedLayout& layout = obj->as<UnboxedPlainObject>().layout();
-
- if (const UnboxedLayout::Property* property = layout.lookup(id)) {
- if (!desc.getter() && !desc.setter() && desc.attributes() == JSPROP_ENUMERATE) {
- // This define is equivalent to setting an existing property.
- if (obj->as<UnboxedPlainObject>().setValue(cx, *property, desc.value()))
- return result.succeed();
- }
-
- // Trying to incompatibly redefine an existing property requires the
- // object to be converted to a native object.
- if (!convertToNative(cx, obj))
- return false;
-
- return DefineProperty(cx, obj, id, desc, result);
- }
-
- // Define the property on the expando object.
- Rooted<UnboxedExpandoObject*> expando(cx, ensureExpando(cx, obj.as<UnboxedPlainObject>()));
- if (!expando)
- return false;
-
- // Update property types on the unboxed object as well.
- AddTypePropertyId(cx, obj, id, desc.value());
-
- return DefineProperty(cx, expando, id, desc, result);
-}
-
-/* static */ bool
-UnboxedPlainObject::obj_hasProperty(JSContext* cx, HandleObject obj, HandleId id, bool* foundp)
-{
- if (obj->as<UnboxedPlainObject>().containsUnboxedOrExpandoProperty(cx, id)) {
- *foundp = true;
- return true;
- }
-
- RootedObject proto(cx, obj->staticPrototype());
- if (!proto) {
- *foundp = false;
- return true;
- }
-
- return HasProperty(cx, proto, id, foundp);
-}
-
-/* static */ bool
-UnboxedPlainObject::obj_getProperty(JSContext* cx, HandleObject obj, HandleValue receiver,
- HandleId id, MutableHandleValue vp)
-{
- const UnboxedLayout& layout = obj->as<UnboxedPlainObject>().layout();
-
- if (const UnboxedLayout::Property* property = layout.lookup(id)) {
- vp.set(obj->as<UnboxedPlainObject>().getValue(*property));
- return true;
- }
-
- if (UnboxedExpandoObject* expando = obj->as<UnboxedPlainObject>().maybeExpando()) {
- if (expando->containsShapeOrElement(cx, id)) {
- RootedObject nexpando(cx, expando);
- return GetProperty(cx, nexpando, receiver, id, vp);
- }
- }
-
- RootedObject proto(cx, obj->staticPrototype());
- if (!proto) {
- vp.setUndefined();
- return true;
- }
-
- return GetProperty(cx, proto, receiver, id, vp);
-}
-
-/* static */ bool
-UnboxedPlainObject::obj_setProperty(JSContext* cx, HandleObject obj, HandleId id, HandleValue v,
- HandleValue receiver, ObjectOpResult& result)
-{
- const UnboxedLayout& layout = obj->as<UnboxedPlainObject>().layout();
-
- if (const UnboxedLayout::Property* property = layout.lookup(id)) {
- if (receiver.isObject() && obj == &receiver.toObject()) {
- if (obj->as<UnboxedPlainObject>().setValue(cx, *property, v))
- return result.succeed();
-
- if (!convertToNative(cx, obj))
- return false;
- return SetProperty(cx, obj, id, v, receiver, result);
- }
-
- return SetPropertyByDefining(cx, id, v, receiver, result);
- }
-
- if (UnboxedExpandoObject* expando = obj->as<UnboxedPlainObject>().maybeExpando()) {
- if (expando->containsShapeOrElement(cx, id)) {
- // Update property types on the unboxed object as well.
- AddTypePropertyId(cx, obj, id, v);
-
- RootedObject nexpando(cx, expando);
- return SetProperty(cx, nexpando, id, v, receiver, result);
- }
- }
-
- return SetPropertyOnProto(cx, obj, id, v, receiver, result);
-}
-
-/* static */ bool
-UnboxedPlainObject::obj_getOwnPropertyDescriptor(JSContext* cx, HandleObject obj, HandleId id,
- MutableHandle<PropertyDescriptor> desc)
-{
- const UnboxedLayout& layout = obj->as<UnboxedPlainObject>().layout();
-
- if (const UnboxedLayout::Property* property = layout.lookup(id)) {
- desc.value().set(obj->as<UnboxedPlainObject>().getValue(*property));
- desc.setAttributes(JSPROP_ENUMERATE);
- desc.object().set(obj);
- return true;
- }
-
- if (UnboxedExpandoObject* expando = obj->as<UnboxedPlainObject>().maybeExpando()) {
- if (expando->containsShapeOrElement(cx, id)) {
- RootedObject nexpando(cx, expando);
- if (!GetOwnPropertyDescriptor(cx, nexpando, id, desc))
- return false;
- if (desc.object() == nexpando)
- desc.object().set(obj);
- return true;
- }
- }
-
- desc.object().set(nullptr);
- return true;
-}
-
-/* static */ bool
-UnboxedPlainObject::obj_deleteProperty(JSContext* cx, HandleObject obj, HandleId id,
- ObjectOpResult& result)
-{
- if (!convertToNative(cx, obj))
- return false;
- return DeleteProperty(cx, obj, id, result);
-}
-
-/* static */ bool
-UnboxedPlainObject::obj_watch(JSContext* cx, HandleObject obj, HandleId id, HandleObject callable)
-{
- if (!convertToNative(cx, obj))
- return false;
- return WatchProperty(cx, obj, id, callable);
-}
-
-/* static */ bool
-UnboxedPlainObject::obj_enumerate(JSContext* cx, HandleObject obj, AutoIdVector& properties,
- bool enumerableOnly)
-{
- // Ignore expando properties here, they are special-cased by the property
- // enumeration code.
-
- const UnboxedLayout::PropertyVector& unboxed = obj->as<UnboxedPlainObject>().layout().properties();
- for (size_t i = 0; i < unboxed.length(); i++) {
- if (!properties.append(NameToId(unboxed[i].name)))
- return false;
- }
-
- return true;
-}
-
-const Class UnboxedExpandoObject::class_ = {
- "UnboxedExpandoObject",
- 0
-};
-
-static const ClassOps UnboxedPlainObjectClassOps = {
- nullptr, /* addProperty */
- nullptr, /* delProperty */
- nullptr, /* getProperty */
- nullptr, /* setProperty */
- nullptr, /* enumerate */
- nullptr, /* resolve */
- nullptr, /* mayResolve */
- nullptr, /* finalize */
- nullptr, /* call */
- nullptr, /* hasInstance */
- nullptr, /* construct */
- UnboxedPlainObject::trace,
-};
-
-static const ObjectOps UnboxedPlainObjectObjectOps = {
- UnboxedPlainObject::obj_lookupProperty,
- UnboxedPlainObject::obj_defineProperty,
- UnboxedPlainObject::obj_hasProperty,
- UnboxedPlainObject::obj_getProperty,
- UnboxedPlainObject::obj_setProperty,
- UnboxedPlainObject::obj_getOwnPropertyDescriptor,
- UnboxedPlainObject::obj_deleteProperty,
- UnboxedPlainObject::obj_watch,
- nullptr, /* No unwatch needed, as watch() converts the object to native */
- nullptr, /* getElements */
- UnboxedPlainObject::obj_enumerate,
- nullptr /* funToString */
-};
-
-const Class UnboxedPlainObject::class_ = {
- js_Object_str,
- Class::NON_NATIVE |
- JSCLASS_HAS_CACHED_PROTO(JSProto_Object) |
- JSCLASS_DELAY_METADATA_BUILDER,
- &UnboxedPlainObjectClassOps,
- JS_NULL_CLASS_SPEC,
- JS_NULL_CLASS_EXT,
- &UnboxedPlainObjectObjectOps
-};
-
-/////////////////////////////////////////////////////////////////////
-// UnboxedArrayObject
-/////////////////////////////////////////////////////////////////////
-
-template <JSValueType Type>
-DenseElementResult
-AppendUnboxedDenseElements(UnboxedArrayObject* obj, uint32_t initlen,
- MutableHandle<GCVector<Value>> values)
-{
- for (size_t i = 0; i < initlen; i++)
- values.infallibleAppend(obj->getElementSpecific<Type>(i));
- return DenseElementResult::Success;
-}
-
-DefineBoxedOrUnboxedFunctor3(AppendUnboxedDenseElements,
- UnboxedArrayObject*, uint32_t, MutableHandle<GCVector<Value>>);
-
-/* static */ bool
-UnboxedArrayObject::convertToNativeWithGroup(ExclusiveContext* cx, JSObject* obj,
- ObjectGroup* group, Shape* shape)
-{
- size_t length = obj->as<UnboxedArrayObject>().length();
- size_t initlen = obj->as<UnboxedArrayObject>().initializedLength();
-
- Rooted<GCVector<Value>> values(cx, GCVector<Value>(cx));
- if (!values.reserve(initlen))
- return false;
-
- AppendUnboxedDenseElementsFunctor functor(&obj->as<UnboxedArrayObject>(), initlen, &values);
- DebugOnly<DenseElementResult> result = CallBoxedOrUnboxedSpecialization(functor, obj);
- MOZ_ASSERT(result.value == DenseElementResult::Success);
-
- obj->setGroup(group);
-
- ArrayObject* aobj = &obj->as<ArrayObject>();
- aobj->setLastPropertyMakeNative(cx, shape);
-
- // Make sure there is at least one element, so that this array does not
- // use emptyObjectElements / emptyObjectElementsShared.
- if (!aobj->ensureElements(cx, Max<size_t>(initlen, 1)))
- return false;
-
- MOZ_ASSERT(!aobj->getDenseInitializedLength());
- aobj->setDenseInitializedLength(initlen);
- aobj->initDenseElements(0, values.begin(), initlen);
- aobj->setLengthInt32(length);
-
- return true;
-}
-
-/* static */ bool
-UnboxedArrayObject::convertToNative(JSContext* cx, JSObject* obj)
-{
- const UnboxedLayout& layout = obj->as<UnboxedArrayObject>().layout();
-
- if (!layout.nativeGroup()) {
- if (!UnboxedLayout::makeNativeGroup(cx, obj->group()))
- return false;
- }
-
- return convertToNativeWithGroup(cx, obj, layout.nativeGroup(), layout.nativeShape());
-}
-
-bool
-UnboxedArrayObject::convertInt32ToDouble(ExclusiveContext* cx, ObjectGroup* group)
-{
- MOZ_ASSERT(elementType() == JSVAL_TYPE_INT32);
- MOZ_ASSERT(group->unboxedLayout().elementType() == JSVAL_TYPE_DOUBLE);
-
- Vector<int32_t> values(cx);
- if (!values.reserve(initializedLength()))
- return false;
- for (size_t i = 0; i < initializedLength(); i++)
- values.infallibleAppend(getElementSpecific<JSVAL_TYPE_INT32>(i).toInt32());
-
- uint8_t* newElements;
- if (hasInlineElements()) {
- newElements = AllocateObjectBuffer<uint8_t>(cx, this, capacity() * sizeof(double));
- } else {
- newElements = ReallocateObjectBuffer<uint8_t>(cx, this, elements(),
- capacity() * sizeof(int32_t),
- capacity() * sizeof(double));
- }
- if (!newElements)
- return false;
-
- setGroup(group);
- elements_ = newElements;
-
- for (size_t i = 0; i < initializedLength(); i++)
- setElementNoTypeChangeSpecific<JSVAL_TYPE_DOUBLE>(i, DoubleValue(values[i]));
-
- return true;
-}
-
-/* static */ UnboxedArrayObject*
-UnboxedArrayObject::create(ExclusiveContext* cx, HandleObjectGroup group, uint32_t length,
- NewObjectKind newKind, uint32_t maxLength)
-{
- MOZ_ASSERT(length <= MaximumCapacity);
-
- MOZ_ASSERT(group->clasp() == &class_);
- uint32_t elementSize = UnboxedTypeSize(group->unboxedLayout().elementType());
- uint32_t capacity = Min(length, maxLength);
- uint32_t nbytes = offsetOfInlineElements() + elementSize * capacity;
-
- UnboxedArrayObject* res;
- if (nbytes <= JSObject::MAX_BYTE_SIZE) {
- gc::AllocKind allocKind = gc::GetGCObjectKindForBytes(nbytes);
-
- // If there was no provided length information, pick an allocation kind
- // to accommodate small arrays (as is done for normal native arrays).
- if (capacity == 0)
- allocKind = gc::AllocKind::OBJECT8;
-
- res = NewObjectWithGroup<UnboxedArrayObject>(cx, group, allocKind, newKind);
- if (!res)
- return nullptr;
- res->setInitializedLengthNoBarrier(0);
- res->setInlineElements();
-
- size_t actualCapacity = (GetGCKindBytes(allocKind) - offsetOfInlineElements()) / elementSize;
- MOZ_ASSERT(actualCapacity >= capacity);
- res->setCapacityIndex(exactCapacityIndex(actualCapacity));
- } else {
- res = NewObjectWithGroup<UnboxedArrayObject>(cx, group, gc::AllocKind::OBJECT0, newKind);
- if (!res)
- return nullptr;
- res->setInitializedLengthNoBarrier(0);
-
- uint32_t capacityIndex = (capacity == length)
- ? CapacityMatchesLengthIndex
- : chooseCapacityIndex(capacity, length);
- uint32_t actualCapacity = computeCapacity(capacityIndex, length);
-
- res->elements_ = AllocateObjectBuffer<uint8_t>(cx, res, actualCapacity * elementSize);
- if (!res->elements_) {
- // Make the object safe for GC.
- res->setInlineElements();
- return nullptr;
- }
-
- res->setCapacityIndex(capacityIndex);
- }
-
- res->setLength(cx, length);
- return res;
-}
-
-bool
-UnboxedArrayObject::setElement(ExclusiveContext* cx, size_t index, const Value& v)
-{
- MOZ_ASSERT(index < initializedLength());
- uint8_t* p = elements() + index * elementSize();
- return SetUnboxedValue(cx, this, JSID_VOID, p, elementType(), v, /* preBarrier = */ true);
-}
-
-bool
-UnboxedArrayObject::initElement(ExclusiveContext* cx, size_t index, const Value& v)
-{
- MOZ_ASSERT(index < initializedLength());
- uint8_t* p = elements() + index * elementSize();
- return SetUnboxedValue(cx, this, JSID_VOID, p, elementType(), v, /* preBarrier = */ false);
-}
-
-void
-UnboxedArrayObject::initElementNoTypeChange(size_t index, const Value& v)
-{
- MOZ_ASSERT(index < initializedLength());
- uint8_t* p = elements() + index * elementSize();
- if (UnboxedTypeNeedsPreBarrier(elementType()))
- *reinterpret_cast<void**>(p) = nullptr;
- SetUnboxedValueNoTypeChange(this, p, elementType(), v, /* preBarrier = */ false);
-}
-
-Value
-UnboxedArrayObject::getElement(size_t index)
-{
- MOZ_ASSERT(index < initializedLength());
- uint8_t* p = elements() + index * elementSize();
- return GetUnboxedValue(p, elementType(), /* maybeUninitialized = */ false);
-}
-
-/* static */ void
-UnboxedArrayObject::trace(JSTracer* trc, JSObject* obj)
-{
- JSValueType type = obj->as<UnboxedArrayObject>().elementType();
- if (!UnboxedTypeNeedsPreBarrier(type))
- return;
-
- MOZ_ASSERT(obj->as<UnboxedArrayObject>().elementSize() == sizeof(uintptr_t));
- size_t initlen = obj->as<UnboxedArrayObject>().initializedLength();
- void** elements = reinterpret_cast<void**>(obj->as<UnboxedArrayObject>().elements());
-
- switch (type) {
- case JSVAL_TYPE_OBJECT:
- for (size_t i = 0; i < initlen; i++) {
- GCPtrObject* heap = reinterpret_cast<GCPtrObject*>(elements + i);
- TraceNullableEdge(trc, heap, "unboxed_object");
- }
- break;
-
- case JSVAL_TYPE_STRING:
- for (size_t i = 0; i < initlen; i++) {
- GCPtrString* heap = reinterpret_cast<GCPtrString*>(elements + i);
- TraceEdge(trc, heap, "unboxed_string");
- }
- break;
-
- default:
- MOZ_CRASH();
- }
-}
-
-/* static */ void
-UnboxedArrayObject::objectMoved(JSObject* obj, const JSObject* old)
-{
- UnboxedArrayObject& dst = obj->as<UnboxedArrayObject>();
- const UnboxedArrayObject& src = old->as<UnboxedArrayObject>();
-
- // Fix up possible inline data pointer.
- if (src.hasInlineElements())
- dst.setInlineElements();
-}
-
-/* static */ void
-UnboxedArrayObject::finalize(FreeOp* fop, JSObject* obj)
-{
- MOZ_ASSERT(!IsInsideNursery(obj));
- if (!obj->as<UnboxedArrayObject>().hasInlineElements())
- js_free(obj->as<UnboxedArrayObject>().elements());
-}
-
-/* static */ size_t
-UnboxedArrayObject::objectMovedDuringMinorGC(JSTracer* trc, JSObject* dst, JSObject* src,
- gc::AllocKind allocKind)
-{
- UnboxedArrayObject* ndst = &dst->as<UnboxedArrayObject>();
- UnboxedArrayObject* nsrc = &src->as<UnboxedArrayObject>();
- MOZ_ASSERT(ndst->elements() == nsrc->elements());
-
- Nursery& nursery = trc->runtime()->gc.nursery;
-
- if (!nursery.isInside(nsrc->elements())) {
- nursery.removeMallocedBuffer(nsrc->elements());
- return 0;
- }
-
- // Determine if we can use inline data for the target array. If this is
- // possible, the nursery will have picked an allocation size that is large
- // enough.
- size_t nbytes = nsrc->capacity() * nsrc->elementSize();
- if (offsetOfInlineElements() + nbytes <= GetGCKindBytes(allocKind)) {
- ndst->setInlineElements();
- } else {
- MOZ_ASSERT(allocKind == gc::AllocKind::OBJECT0);
-
- AutoEnterOOMUnsafeRegion oomUnsafe;
- uint8_t* data = nsrc->zone()->pod_malloc<uint8_t>(nbytes);
- if (!data)
- oomUnsafe.crash("Failed to allocate unboxed array elements while tenuring.");
- ndst->elements_ = data;
- }
-
- PodCopy(ndst->elements(), nsrc->elements(), nsrc->initializedLength() * nsrc->elementSize());
-
- // Set a forwarding pointer for the element buffers in case they were
- // preserved on the stack by Ion.
- bool direct = nsrc->capacity() * nsrc->elementSize() >= sizeof(uintptr_t);
- nursery.maybeSetForwardingPointer(trc, nsrc->elements(), ndst->elements(), direct);
-
- return ndst->hasInlineElements() ? 0 : nbytes;
-}
-
-// Possible capacities for unboxed arrays. Some of these capacities might seem
-// a little weird, but were chosen to allow the inline data of objects of each
-// size to be fully utilized for arrays of the various types on both 32 bit and
-// 64 bit platforms.
-//
-// To find the possible inline capacities, the following script was used:
-//
-// var fixedSlotCapacities = [0, 2, 4, 8, 12, 16];
-// var dataSizes = [1, 4, 8];
-// var header32 = 4 * 2 + 4 * 2;
-// var header64 = 8 * 2 + 4 * 2;
-//
-// for (var i = 0; i < fixedSlotCapacities.length; i++) {
-// var nfixed = fixedSlotCapacities[i];
-// var size32 = 4 * 4 + 8 * nfixed - header32;
-// var size64 = 8 * 4 + 8 * nfixed - header64;
-// for (var j = 0; j < dataSizes.length; j++) {
-// print(size32 / dataSizes[j]);
-// print(size64 / dataSizes[j]);
-// }
-// }
-//
-/* static */ const uint32_t
-UnboxedArrayObject::CapacityArray[] = {
- UINT32_MAX, // For CapacityMatchesLengthIndex.
- 0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 16, 17, 18, 24, 26, 32, 34, 40, 64, 72, 96, 104, 128, 136,
- 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288,
- 1048576, 2097152, 3145728, 4194304, 5242880, 6291456, 7340032, 8388608, 9437184, 11534336,
- 13631488, 15728640, 17825792, 20971520, 24117248, 27262976, 31457280, 35651584, 40894464,
- 46137344, 52428800, 59768832, MaximumCapacity
-};
-
-static const uint32_t
-Pow2CapacityIndexes[] = {
- 2, // 1
- 3, // 2
- 5, // 4
- 8, // 8
- 13, // 16
- 18, // 32
- 21, // 64
- 25, // 128
- 27, // 256
- 28, // 512
- 29, // 1024
- 30, // 2048
- 31, // 4096
- 32, // 8192
- 33, // 16384
- 34, // 32768
- 35, // 65536
- 36, // 131072
- 37, // 262144
- 38, // 524288
- 39 // 1048576
-};
-
-static const uint32_t MebiCapacityIndex = 39;
-
-/* static */ uint32_t
-UnboxedArrayObject::chooseCapacityIndex(uint32_t capacity, uint32_t length)
-{
- // Note: the structure and behavior of this method follow along with
- // NativeObject::goodAllocated. Changes to the allocation strategy in one
- // should generally be matched by the other.
-
- // Make sure we have enough space to store all possible values for the capacity index.
- // This ought to be a static_assert, but MSVC doesn't like that.
- MOZ_ASSERT(mozilla::ArrayLength(CapacityArray) - 1 <= (CapacityMask >> CapacityShift));
-
- // The caller should have ensured the capacity is possible for an unboxed array.
- MOZ_ASSERT(capacity <= MaximumCapacity);
-
- static const uint32_t Mebi = 1024 * 1024;
-
- if (capacity <= Mebi) {
- capacity = mozilla::RoundUpPow2(capacity);
-
- // When the required capacity is close to the array length, then round
- // up to the array length itself, as for NativeObject.
- if (length >= capacity && capacity > (length / 3) * 2)
- return CapacityMatchesLengthIndex;
-
- if (capacity < MinimumDynamicCapacity)
- capacity = MinimumDynamicCapacity;
-
- uint32_t bit = mozilla::FloorLog2Size(capacity);
- MOZ_ASSERT(capacity == uint32_t(1 << bit));
- MOZ_ASSERT(bit <= 20);
- MOZ_ASSERT(mozilla::ArrayLength(Pow2CapacityIndexes) == 21);
-
- uint32_t index = Pow2CapacityIndexes[bit];
- MOZ_ASSERT(CapacityArray[index] == capacity);
-
- return index;
- }
-
- MOZ_ASSERT(CapacityArray[MebiCapacityIndex] == Mebi);
-
- for (uint32_t i = MebiCapacityIndex + 1;; i++) {
- if (CapacityArray[i] >= capacity)
- return i;
- }
-
- MOZ_CRASH("Invalid capacity");
-}
-
-/* static */ uint32_t
-UnboxedArrayObject::exactCapacityIndex(uint32_t capacity)
-{
- for (size_t i = CapacityMatchesLengthIndex + 1; i < ArrayLength(CapacityArray); i++) {
- if (CapacityArray[i] == capacity)
- return i;
- }
- MOZ_CRASH();
-}
-
-bool
-UnboxedArrayObject::growElements(ExclusiveContext* cx, size_t cap)
-{
- // The caller should have checked if this capacity is possible for an
- // unboxed array, so the only way this call can fail is from OOM.
- MOZ_ASSERT(cap <= MaximumCapacity);
-
- uint32_t oldCapacity = capacity();
- uint32_t newCapacityIndex = chooseCapacityIndex(cap, length());
- uint32_t newCapacity = computeCapacity(newCapacityIndex, length());
-
- MOZ_ASSERT(oldCapacity < cap);
- MOZ_ASSERT(cap <= newCapacity);
-
- // The allocation size computation below cannot have integer overflows.
- JS_STATIC_ASSERT(MaximumCapacity < UINT32_MAX / sizeof(double));
-
- uint8_t* newElements;
- if (hasInlineElements()) {
- newElements = AllocateObjectBuffer<uint8_t>(cx, this, newCapacity * elementSize());
- if (!newElements)
- return false;
- js_memcpy(newElements, elements(), initializedLength() * elementSize());
- } else {
- newElements = ReallocateObjectBuffer<uint8_t>(cx, this, elements(),
- oldCapacity * elementSize(),
- newCapacity * elementSize());
- if (!newElements)
- return false;
- }
-
- elements_ = newElements;
- setCapacityIndex(newCapacityIndex);
-
- return true;
-}
-
-void
-UnboxedArrayObject::shrinkElements(ExclusiveContext* cx, size_t cap)
-{
- if (hasInlineElements())
- return;
-
- uint32_t oldCapacity = capacity();
- uint32_t newCapacityIndex = chooseCapacityIndex(cap, 0);
- uint32_t newCapacity = computeCapacity(newCapacityIndex, 0);
-
- MOZ_ASSERT(cap < oldCapacity);
- MOZ_ASSERT(cap <= newCapacity);
-
- if (newCapacity >= oldCapacity)
- return;
-
- uint8_t* newElements = ReallocateObjectBuffer<uint8_t>(cx, this, elements(),
- oldCapacity * elementSize(),
- newCapacity * elementSize());
- if (!newElements)
- return;
-
- elements_ = newElements;
- setCapacityIndex(newCapacityIndex);
-}
-
-bool
-UnboxedArrayObject::containsProperty(ExclusiveContext* cx, jsid id)
-{
- if (JSID_IS_INT(id) && uint32_t(JSID_TO_INT(id)) < initializedLength())
- return true;
- if (JSID_IS_ATOM(id) && JSID_TO_ATOM(id) == cx->names().length)
- return true;
- return false;
-}
-
-/* static */ bool
-UnboxedArrayObject::obj_lookupProperty(JSContext* cx, HandleObject obj,
- HandleId id, MutableHandleObject objp,
- MutableHandleShape propp)
-{
- if (obj->as<UnboxedArrayObject>().containsProperty(cx, id)) {
- MarkNonNativePropertyFound<CanGC>(propp);
- objp.set(obj);
- return true;
- }
-
- RootedObject proto(cx, obj->staticPrototype());
- if (!proto) {
- objp.set(nullptr);
- propp.set(nullptr);
- return true;
- }
-
- return LookupProperty(cx, proto, id, objp, propp);
-}
-
-/* static */ bool
-UnboxedArrayObject::obj_defineProperty(JSContext* cx, HandleObject obj, HandleId id,
- Handle<PropertyDescriptor> desc,
- ObjectOpResult& result)
-{
- if (JSID_IS_INT(id) && !desc.getter() && !desc.setter() && desc.attributes() == JSPROP_ENUMERATE) {
- UnboxedArrayObject* nobj = &obj->as<UnboxedArrayObject>();
-
- uint32_t index = JSID_TO_INT(id);
- if (index < nobj->initializedLength()) {
- if (nobj->setElement(cx, index, desc.value()))
- return result.succeed();
- } else if (index == nobj->initializedLength() && index < MaximumCapacity) {
- if (nobj->initializedLength() == nobj->capacity()) {
- if (!nobj->growElements(cx, index + 1))
- return false;
- }
- nobj->setInitializedLength(index + 1);
- if (nobj->initElement(cx, index, desc.value())) {
- if (nobj->length() <= index)
- nobj->setLengthInt32(index + 1);
- return result.succeed();
- }
- nobj->setInitializedLengthNoBarrier(index);
- }
- }
-
- if (!convertToNative(cx, obj))
- return false;
-
- return DefineProperty(cx, obj, id, desc, result);
-}
-
-/* static */ bool
-UnboxedArrayObject::obj_hasProperty(JSContext* cx, HandleObject obj, HandleId id, bool* foundp)
-{
- if (obj->as<UnboxedArrayObject>().containsProperty(cx, id)) {
- *foundp = true;
- return true;
- }
-
- RootedObject proto(cx, obj->staticPrototype());
- if (!proto) {
- *foundp = false;
- return true;
- }
-
- return HasProperty(cx, proto, id, foundp);
-}
-
-/* static */ bool
-UnboxedArrayObject::obj_getProperty(JSContext* cx, HandleObject obj, HandleValue receiver,
- HandleId id, MutableHandleValue vp)
-{
- if (obj->as<UnboxedArrayObject>().containsProperty(cx, id)) {
- if (JSID_IS_INT(id))
- vp.set(obj->as<UnboxedArrayObject>().getElement(JSID_TO_INT(id)));
- else
- vp.set(Int32Value(obj->as<UnboxedArrayObject>().length()));
- return true;
- }
-
- RootedObject proto(cx, obj->staticPrototype());
- if (!proto) {
- vp.setUndefined();
- return true;
- }
-
- return GetProperty(cx, proto, receiver, id, vp);
-}
-
-/* static */ bool
-UnboxedArrayObject::obj_setProperty(JSContext* cx, HandleObject obj, HandleId id, HandleValue v,
- HandleValue receiver, ObjectOpResult& result)
-{
- if (obj->as<UnboxedArrayObject>().containsProperty(cx, id)) {
- if (receiver.isObject() && obj == &receiver.toObject()) {
- if (JSID_IS_INT(id)) {
- if (obj->as<UnboxedArrayObject>().setElement(cx, JSID_TO_INT(id), v))
- return result.succeed();
- } else {
- uint32_t len;
- if (!CanonicalizeArrayLengthValue(cx, v, &len))
- return false;
- UnboxedArrayObject* nobj = &obj->as<UnboxedArrayObject>();
- if (len < nobj->initializedLength()) {
- nobj->setInitializedLength(len);
- nobj->shrinkElements(cx, len);
- }
- nobj->setLength(cx, len);
- return result.succeed();
- }
-
- if (!convertToNative(cx, obj))
- return false;
- return SetProperty(cx, obj, id, v, receiver, result);
- }
-
- return SetPropertyByDefining(cx, id, v, receiver, result);
- }
-
- return SetPropertyOnProto(cx, obj, id, v, receiver, result);
-}
-
-/* static */ bool
-UnboxedArrayObject::obj_getOwnPropertyDescriptor(JSContext* cx, HandleObject obj, HandleId id,
- MutableHandle<PropertyDescriptor> desc)
-{
- if (obj->as<UnboxedArrayObject>().containsProperty(cx, id)) {
- if (JSID_IS_INT(id)) {
- desc.value().set(obj->as<UnboxedArrayObject>().getElement(JSID_TO_INT(id)));
- desc.setAttributes(JSPROP_ENUMERATE);
- } else {
- desc.value().set(Int32Value(obj->as<UnboxedArrayObject>().length()));
- desc.setAttributes(JSPROP_PERMANENT);
- }
- desc.object().set(obj);
- return true;
- }
-
- desc.object().set(nullptr);
- return true;
-}
-
-/* static */ bool
-UnboxedArrayObject::obj_deleteProperty(JSContext* cx, HandleObject obj, HandleId id,
- ObjectOpResult& result)
-{
- if (obj->as<UnboxedArrayObject>().containsProperty(cx, id)) {
- size_t initlen = obj->as<UnboxedArrayObject>().initializedLength();
- if (JSID_IS_INT(id) && JSID_TO_INT(id) == int32_t(initlen - 1)) {
- obj->as<UnboxedArrayObject>().setInitializedLength(initlen - 1);
- obj->as<UnboxedArrayObject>().shrinkElements(cx, initlen - 1);
- return result.succeed();
- }
- }
-
- if (!convertToNative(cx, obj))
- return false;
- return DeleteProperty(cx, obj, id, result);
-}
-
-/* static */ bool
-UnboxedArrayObject::obj_watch(JSContext* cx, HandleObject obj, HandleId id, HandleObject callable)
-{
- if (!convertToNative(cx, obj))
- return false;
- return WatchProperty(cx, obj, id, callable);
-}
-
-/* static */ bool
-UnboxedArrayObject::obj_enumerate(JSContext* cx, HandleObject obj, AutoIdVector& properties,
- bool enumerableOnly)
-{
- for (size_t i = 0; i < obj->as<UnboxedArrayObject>().initializedLength(); i++) {
- if (!properties.append(INT_TO_JSID(i)))
- return false;
- }
-
- if (!enumerableOnly && !properties.append(NameToId(cx->names().length)))
- return false;
-
- return true;
-}
-
-static const ClassOps UnboxedArrayObjectClassOps = {
- nullptr, /* addProperty */
- nullptr, /* delProperty */
- nullptr, /* getProperty */
- nullptr, /* setProperty */
- nullptr, /* enumerate */
- nullptr, /* resolve */
- nullptr, /* mayResolve */
- UnboxedArrayObject::finalize,
- nullptr, /* call */
- nullptr, /* hasInstance */
- nullptr, /* construct */
- UnboxedArrayObject::trace,
-};
-
-static const ClassExtension UnboxedArrayObjectClassExtension = {
- nullptr, /* weakmapKeyDelegateOp */
- UnboxedArrayObject::objectMoved
-};
-
-static const ObjectOps UnboxedArrayObjectObjectOps = {
- UnboxedArrayObject::obj_lookupProperty,
- UnboxedArrayObject::obj_defineProperty,
- UnboxedArrayObject::obj_hasProperty,
- UnboxedArrayObject::obj_getProperty,
- UnboxedArrayObject::obj_setProperty,
- UnboxedArrayObject::obj_getOwnPropertyDescriptor,
- UnboxedArrayObject::obj_deleteProperty,
- UnboxedArrayObject::obj_watch,
- nullptr, /* No unwatch needed, as watch() converts the object to native */
- nullptr, /* getElements */
- UnboxedArrayObject::obj_enumerate,
- nullptr /* funToString */
-};
-
-const Class UnboxedArrayObject::class_ = {
- "Array",
- Class::NON_NATIVE |
- JSCLASS_SKIP_NURSERY_FINALIZE |
- JSCLASS_BACKGROUND_FINALIZE,
- &UnboxedArrayObjectClassOps,
- JS_NULL_CLASS_SPEC,
- &UnboxedArrayObjectClassExtension,
- &UnboxedArrayObjectObjectOps
-};
-
-/////////////////////////////////////////////////////////////////////
-// API
-/////////////////////////////////////////////////////////////////////
-
-static bool
-UnboxedTypeIncludes(JSValueType supertype, JSValueType subtype)
-{
- if (supertype == JSVAL_TYPE_DOUBLE && subtype == JSVAL_TYPE_INT32)
- return true;
- if (supertype == JSVAL_TYPE_OBJECT && subtype == JSVAL_TYPE_NULL)
- return true;
- return false;
-}
-
-static bool
-CombineUnboxedTypes(const Value& value, JSValueType* existing)
-{
- JSValueType type = value.isDouble() ? JSVAL_TYPE_DOUBLE : value.extractNonDoubleType();
-
- if (*existing == JSVAL_TYPE_MAGIC || *existing == type || UnboxedTypeIncludes(type, *existing)) {
- *existing = type;
- return true;
- }
- if (UnboxedTypeIncludes(*existing, type))
- return true;
- return false;
-}
-
-// Return whether the property names and types in layout are a subset of the
-// specified vector.
-static bool
-PropertiesAreSuperset(const UnboxedLayout::PropertyVector& properties, UnboxedLayout* layout)
-{
- for (size_t i = 0; i < layout->properties().length(); i++) {
- const UnboxedLayout::Property& layoutProperty = layout->properties()[i];
- bool found = false;
- for (size_t j = 0; j < properties.length(); j++) {
- if (layoutProperty.name == properties[j].name) {
- found = (layoutProperty.type == properties[j].type);
- break;
- }
- }
- if (!found)
- return false;
- }
- return true;
-}
-
-static bool
-CombinePlainObjectProperties(PlainObject* obj, Shape* templateShape,
- UnboxedLayout::PropertyVector& properties)
-{
- // All preliminary objects must have been created with enough space to
- // fill in their unboxed data inline. This is ensured either by using
- // the largest allocation kind (which limits the maximum size of an
- // unboxed object), or by using an allocation kind that covers all
- // properties in the template, as the space used by unboxed properties
- // is less than or equal to that used by boxed properties.
- MOZ_ASSERT(gc::GetGCKindSlots(obj->asTenured().getAllocKind()) >=
- Min(NativeObject::MAX_FIXED_SLOTS, templateShape->slotSpan()));
-
- if (obj->lastProperty() != templateShape || obj->hasDynamicElements()) {
- // Only use an unboxed representation if all created objects match
- // the template shape exactly.
- return false;
- }
-
- for (size_t i = 0; i < templateShape->slotSpan(); i++) {
- Value val = obj->getSlot(i);
-
- JSValueType& existing = properties[i].type;
- if (!CombineUnboxedTypes(val, &existing))
- return false;
- }
-
- return true;
-}
-
-static bool
-CombineArrayObjectElements(ExclusiveContext* cx, ArrayObject* obj, JSValueType* elementType)
-{
- if (obj->inDictionaryMode() ||
- obj->lastProperty()->propid() != AtomToId(cx->names().length) ||
- !obj->lastProperty()->previous()->isEmptyShape())
- {
- // Only use an unboxed representation if the object has no properties.
- return false;
- }
-
- for (size_t i = 0; i < obj->getDenseInitializedLength(); i++) {
- Value val = obj->getDenseElement(i);
-
- // For now, unboxed arrays cannot have holes.
- if (val.isMagic(JS_ELEMENTS_HOLE))
- return false;
-
- if (!CombineUnboxedTypes(val, elementType))
- return false;
- }
-
- return true;
-}
-
-static size_t
-ComputePlainObjectLayout(ExclusiveContext* cx, Shape* templateShape,
- UnboxedLayout::PropertyVector& properties)
-{
- // Fill in the names for all the object's properties.
- for (Shape::Range<NoGC> r(templateShape); !r.empty(); r.popFront()) {
- size_t slot = r.front().slot();
- MOZ_ASSERT(!properties[slot].name);
- properties[slot].name = JSID_TO_ATOM(r.front().propid())->asPropertyName();
- }
-
- // Fill in all the unboxed object's property offsets.
- uint32_t offset = 0;
-
- // Search for an existing unboxed layout which is a subset of this one.
- // If there are multiple such layouts, use the largest one. If we're able
- // to find such a layout, use the same property offsets for the shared
- // properties, which will allow us to generate better code if the objects
- // have a subtype/supertype relation and are accessed at common sites.
- UnboxedLayout* bestExisting = nullptr;
- for (UnboxedLayout* existing : cx->compartment()->unboxedLayouts) {
- if (PropertiesAreSuperset(properties, existing)) {
- if (!bestExisting ||
- existing->properties().length() > bestExisting->properties().length())
- {
- bestExisting = existing;
- }
- }
- }
- if (bestExisting) {
- for (size_t i = 0; i < bestExisting->properties().length(); i++) {
- const UnboxedLayout::Property& existingProperty = bestExisting->properties()[i];
- for (size_t j = 0; j < templateShape->slotSpan(); j++) {
- if (existingProperty.name == properties[j].name) {
- MOZ_ASSERT(existingProperty.type == properties[j].type);
- properties[j].offset = existingProperty.offset;
- }
- }
- }
- offset = bestExisting->size();
- }
-
- // Order remaining properties from the largest down for the best space
- // utilization.
- static const size_t typeSizes[] = { 8, 4, 1 };
-
- for (size_t i = 0; i < ArrayLength(typeSizes); i++) {
- size_t size = typeSizes[i];
- for (size_t j = 0; j < templateShape->slotSpan(); j++) {
- if (properties[j].offset != UINT32_MAX)
- continue;
- JSValueType type = properties[j].type;
- if (UnboxedTypeSize(type) == size) {
- offset = JS_ROUNDUP(offset, size);
- properties[j].offset = offset;
- offset += size;
- }
- }
- }
-
- // The final offset is the amount of data needed by the object.
- return offset;
-}
-
-static bool
-SetLayoutTraceList(ExclusiveContext* cx, UnboxedLayout* layout)
-{
- // Figure out the offsets of any objects or string properties.
- Vector<int32_t, 8, SystemAllocPolicy> objectOffsets, stringOffsets;
- for (size_t i = 0; i < layout->properties().length(); i++) {
- const UnboxedLayout::Property& property = layout->properties()[i];
- MOZ_ASSERT(property.offset != UINT32_MAX);
- if (property.type == JSVAL_TYPE_OBJECT) {
- if (!objectOffsets.append(property.offset))
- return false;
- } else if (property.type == JSVAL_TYPE_STRING) {
- if (!stringOffsets.append(property.offset))
- return false;
- }
- }
-
- // Construct the layout's trace list.
- if (!objectOffsets.empty() || !stringOffsets.empty()) {
- Vector<int32_t, 8, SystemAllocPolicy> entries;
- if (!entries.appendAll(stringOffsets) ||
- !entries.append(-1) ||
- !entries.appendAll(objectOffsets) ||
- !entries.append(-1) ||
- !entries.append(-1))
- {
- return false;
- }
- int32_t* traceList = cx->zone()->pod_malloc<int32_t>(entries.length());
- if (!traceList)
- return false;
- PodCopy(traceList, entries.begin(), entries.length());
- layout->setTraceList(traceList);
- }
-
- return true;
-}
-
-static inline Value
-NextValue(Handle<GCVector<Value>> values, size_t* valueCursor)
-{
- return values[(*valueCursor)++];
-}
-
-static bool
-GetValuesFromPreliminaryArrayObject(ArrayObject* obj, MutableHandle<GCVector<Value>> values)
-{
- if (!values.append(Int32Value(obj->length())))
- return false;
- if (!values.append(Int32Value(obj->getDenseInitializedLength())))
- return false;
- for (size_t i = 0; i < obj->getDenseInitializedLength(); i++) {
- if (!values.append(obj->getDenseElement(i)))
- return false;
- }
- return true;
-}
-
-void
-UnboxedArrayObject::fillAfterConvert(ExclusiveContext* cx,
- Handle<GCVector<Value>> values, size_t* valueCursor)
-{
- MOZ_ASSERT(CapacityArray[1] == 0);
- setCapacityIndex(1);
- setInitializedLengthNoBarrier(0);
- setInlineElements();
-
- setLength(cx, NextValue(values, valueCursor).toInt32());
-
- int32_t initlen = NextValue(values, valueCursor).toInt32();
- if (!initlen)
- return;
-
- AutoEnterOOMUnsafeRegion oomUnsafe;
- if (!growElements(cx, initlen))
- oomUnsafe.crash("UnboxedArrayObject::fillAfterConvert");
-
- setInitializedLength(initlen);
-
- for (size_t i = 0; i < size_t(initlen); i++)
- JS_ALWAYS_TRUE(initElement(cx, i, NextValue(values, valueCursor)));
-}
-
-static bool
-GetValuesFromPreliminaryPlainObject(PlainObject* obj, MutableHandle<GCVector<Value>> values)
-{
- for (size_t i = 0; i < obj->slotSpan(); i++) {
- if (!values.append(obj->getSlot(i)))
- return false;
- }
- return true;
-}
-
-void
-UnboxedPlainObject::fillAfterConvert(ExclusiveContext* cx,
- Handle<GCVector<Value>> values, size_t* valueCursor)
-{
- initExpando();
- memset(data(), 0, layout().size());
- for (size_t i = 0; i < layout().properties().length(); i++)
- JS_ALWAYS_TRUE(setValue(cx, layout().properties()[i], NextValue(values, valueCursor)));
-}
-
-bool
-js::TryConvertToUnboxedLayout(ExclusiveContext* cx, AutoEnterAnalysis& enter, Shape* templateShape,
- ObjectGroup* group, PreliminaryObjectArray* objects)
-{
- bool isArray = !templateShape;
-
- // Unboxed arrays are nightly only for now. The getenv() call will be
- // removed when they are on by default. See bug 1153266.
- if (isArray) {
-#ifdef NIGHTLY_BUILD
- if (!getenv("JS_OPTION_USE_UNBOXED_ARRAYS")) {
- if (!cx->options().unboxedArrays())
- return true;
- }
-#else
- return true;
-#endif
- } else {
- if (jit::JitOptions.disableUnboxedObjects)
- return true;
- }
-
- MOZ_ASSERT_IF(templateShape, !templateShape->getObjectFlags());
-
- if (group->runtimeFromAnyThread()->isSelfHostingGlobal(cx->global()))
- return true;
-
- if (!isArray && templateShape->slotSpan() == 0)
- return true;
-
- UnboxedLayout::PropertyVector properties;
- if (!isArray) {
- if (!properties.appendN(UnboxedLayout::Property(), templateShape->slotSpan()))
- return false;
- }
- JSValueType elementType = JSVAL_TYPE_MAGIC;
-
- size_t objectCount = 0;
- for (size_t i = 0; i < PreliminaryObjectArray::COUNT; i++) {
- JSObject* obj = objects->get(i);
- if (!obj)
- continue;
-
- if (obj->isSingleton() || obj->group() != group)
- return true;
-
- objectCount++;
-
- if (isArray) {
- if (!CombineArrayObjectElements(cx, &obj->as<ArrayObject>(), &elementType))
- return true;
- } else {
- if (!CombinePlainObjectProperties(&obj->as<PlainObject>(), templateShape, properties))
- return true;
- }
- }
-
- size_t layoutSize = 0;
- if (isArray) {
- // Don't use an unboxed representation if we couldn't determine an
- // element type for the objects.
- if (UnboxedTypeSize(elementType) == 0)
- return true;
- } else {
- if (objectCount <= 1) {
- // If only one of the objects has been created, it is more likely
- // to have new properties added later. This heuristic is not used
- // for array objects, where we might want an unboxed representation
- // even if there is only one large array.
- return true;
- }
-
- for (size_t i = 0; i < templateShape->slotSpan(); i++) {
- // We can't use an unboxed representation if e.g. all the objects have
- // a null value for one of the properties, as we can't decide what type
- // it is supposed to have.
- if (UnboxedTypeSize(properties[i].type) == 0)
- return true;
- }
-
- // Make sure that all properties on the template shape are property
- // names, and not indexes.
- for (Shape::Range<NoGC> r(templateShape); !r.empty(); r.popFront()) {
- jsid id = r.front().propid();
- uint32_t dummy;
- if (!JSID_IS_ATOM(id) || JSID_TO_ATOM(id)->isIndex(&dummy))
- return true;
- }
-
- layoutSize = ComputePlainObjectLayout(cx, templateShape, properties);
-
- // The entire object must be allocatable inline.
- if (UnboxedPlainObject::offsetOfData() + layoutSize > JSObject::MAX_BYTE_SIZE)
- return true;
- }
-
- UniquePtr<UnboxedLayout>& layout = enter.unboxedLayoutToCleanUp;
- MOZ_ASSERT(!layout);
- layout = group->zone()->make_unique<UnboxedLayout>();
- if (!layout)
- return false;
-
- if (isArray) {
- layout->initArray(elementType);
- } else {
- if (!layout->initProperties(properties, layoutSize))
- return false;
-
- // The unboxedLayouts list only tracks layouts for plain objects.
- cx->compartment()->unboxedLayouts.insertFront(layout.get());
-
- if (!SetLayoutTraceList(cx, layout.get()))
- return false;
- }
-
- // We've determined that all the preliminary objects can use the new layout
- // just constructed, so convert the existing group to use the unboxed class,
- // and update the preliminary objects to use the new layout. Do the
- // fallible stuff first before modifying any objects.
-
- // Get an empty shape which we can use for the preliminary objects.
- const Class* clasp = isArray ? &UnboxedArrayObject::class_ : &UnboxedPlainObject::class_;
- Shape* newShape = EmptyShape::getInitialShape(cx, clasp, group->proto(), 0);
- if (!newShape) {
- cx->recoverFromOutOfMemory();
- return false;
- }
-
- // Accumulate a list of all the values in each preliminary object, and
- // update their shapes.
- Rooted<GCVector<Value>> values(cx, GCVector<Value>(cx));
- for (size_t i = 0; i < PreliminaryObjectArray::COUNT; i++) {
- JSObject* obj = objects->get(i);
- if (!obj)
- continue;
-
- bool ok;
- if (isArray)
- ok = GetValuesFromPreliminaryArrayObject(&obj->as<ArrayObject>(), &values);
- else
- ok = GetValuesFromPreliminaryPlainObject(&obj->as<PlainObject>(), &values);
-
- if (!ok) {
- cx->recoverFromOutOfMemory();
- return false;
- }
- }
-
- if (TypeNewScript* newScript = group->newScript())
- layout->setNewScript(newScript);
-
- for (size_t i = 0; i < PreliminaryObjectArray::COUNT; i++) {
- if (JSObject* obj = objects->get(i))
- obj->as<NativeObject>().setLastPropertyMakeNonNative(newShape);
- }
-
- group->setClasp(clasp);
- group->setUnboxedLayout(layout.release());
-
- size_t valueCursor = 0;
- for (size_t i = 0; i < PreliminaryObjectArray::COUNT; i++) {
- JSObject* obj = objects->get(i);
- if (!obj)
- continue;
-
- if (isArray)
- obj->as<UnboxedArrayObject>().fillAfterConvert(cx, values, &valueCursor);
- else
- obj->as<UnboxedPlainObject>().fillAfterConvert(cx, values, &valueCursor);
- }
-
- MOZ_ASSERT(valueCursor == values.length());
- return true;
-}
-
-DefineBoxedOrUnboxedFunctor6(SetOrExtendBoxedOrUnboxedDenseElements,
- ExclusiveContext*, JSObject*, uint32_t, const Value*, uint32_t,
- ShouldUpdateTypes);
-
-DenseElementResult
-js::SetOrExtendAnyBoxedOrUnboxedDenseElements(ExclusiveContext* cx, JSObject* obj,
- uint32_t start, const Value* vp, uint32_t count,
- ShouldUpdateTypes updateTypes)
-{
- SetOrExtendBoxedOrUnboxedDenseElementsFunctor functor(cx, obj, start, vp, count, updateTypes);
- return CallBoxedOrUnboxedSpecialization(functor, obj);
-};
-
-DefineBoxedOrUnboxedFunctor5(MoveBoxedOrUnboxedDenseElements,
- JSContext*, JSObject*, uint32_t, uint32_t, uint32_t);
-
-DenseElementResult
-js::MoveAnyBoxedOrUnboxedDenseElements(JSContext* cx, JSObject* obj,
- uint32_t dstStart, uint32_t srcStart, uint32_t length)
-{
- MoveBoxedOrUnboxedDenseElementsFunctor functor(cx, obj, dstStart, srcStart, length);
- return CallBoxedOrUnboxedSpecialization(functor, obj);
-}
-
-DefineBoxedOrUnboxedFunctorPair6(CopyBoxedOrUnboxedDenseElements,
- JSContext*, JSObject*, JSObject*, uint32_t, uint32_t, uint32_t);
-
-DenseElementResult
-js::CopyAnyBoxedOrUnboxedDenseElements(JSContext* cx, JSObject* dst, JSObject* src,
- uint32_t dstStart, uint32_t srcStart, uint32_t length)
-{
- CopyBoxedOrUnboxedDenseElementsFunctor functor(cx, dst, src, dstStart, srcStart, length);
- return CallBoxedOrUnboxedSpecialization(functor, dst, src);
-}
-
-DefineBoxedOrUnboxedFunctor3(SetBoxedOrUnboxedInitializedLength,
- JSContext*, JSObject*, size_t);
-
-void
-js::SetAnyBoxedOrUnboxedInitializedLength(JSContext* cx, JSObject* obj, size_t initlen)
-{
- SetBoxedOrUnboxedInitializedLengthFunctor functor(cx, obj, initlen);
- JS_ALWAYS_TRUE(CallBoxedOrUnboxedSpecialization(functor, obj) == DenseElementResult::Success);
-}
-
-DefineBoxedOrUnboxedFunctor3(EnsureBoxedOrUnboxedDenseElements,
- JSContext*, JSObject*, size_t);
-
-DenseElementResult
-js::EnsureAnyBoxedOrUnboxedDenseElements(JSContext* cx, JSObject* obj, size_t initlen)
-{
- EnsureBoxedOrUnboxedDenseElementsFunctor functor(cx, obj, initlen);
- return CallBoxedOrUnboxedSpecialization(functor, obj);
-}
diff --git a/js/src/vm/UnboxedObject.h b/js/src/vm/UnboxedObject.h
deleted file mode 100644
index ecff8be5b..000000000
--- a/js/src/vm/UnboxedObject.h
+++ /dev/null
@@ -1,531 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- * vim: set ts=8 sts=4 et sw=4 tw=99:
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef vm_UnboxedObject_h
-#define vm_UnboxedObject_h
-
-#include "jsgc.h"
-#include "jsobj.h"
-
-#include "vm/Runtime.h"
-#include "vm/TypeInference.h"
-
-namespace js {
-
-// Memory required for an unboxed value of a given type. Returns zero for types
-// which can't be used for unboxed objects.
-static inline size_t
-UnboxedTypeSize(JSValueType type)
-{
- switch (type) {
- case JSVAL_TYPE_BOOLEAN: return 1;
- case JSVAL_TYPE_INT32: return 4;
- case JSVAL_TYPE_DOUBLE: return 8;
- case JSVAL_TYPE_STRING: return sizeof(void*);
- case JSVAL_TYPE_OBJECT: return sizeof(void*);
- default: return 0;
- }
-}
-
-static inline bool
-UnboxedTypeNeedsPreBarrier(JSValueType type)
-{
- return type == JSVAL_TYPE_STRING || type == JSVAL_TYPE_OBJECT;
-}
-
-static inline bool
-UnboxedTypeNeedsPostBarrier(JSValueType type)
-{
- return type == JSVAL_TYPE_OBJECT;
-}
-
-// Class tracking information specific to unboxed objects.
-class UnboxedLayout : public mozilla::LinkedListElement<UnboxedLayout>
-{
- public:
- struct Property {
- PropertyName* name;
- uint32_t offset;
- JSValueType type;
-
- Property()
- : name(nullptr), offset(UINT32_MAX), type(JSVAL_TYPE_MAGIC)
- {}
- };
-
- typedef Vector<Property, 0, SystemAllocPolicy> PropertyVector;
-
- private:
- // If objects in this group have ever been converted to native objects,
- // these store the corresponding native group and initial shape for such
- // objects. Type information for this object is reflected in nativeGroup.
- GCPtrObjectGroup nativeGroup_;
- GCPtrShape nativeShape_;
-
- // Any script/pc which the associated group is created for.
- GCPtrScript allocationScript_;
- jsbytecode* allocationPc_;
-
- // If nativeGroup is set and this object originally had a TypeNewScript or
- // was keyed to an allocation site, this points to the group which replaced
- // this one. This link is only needed to keep the replacement group from
- // being GC'ed. If it were GC'ed and a new one regenerated later, that new
- // group might have a different allocation kind from this group.
- GCPtrObjectGroup replacementGroup_;
-
- // The following members are only used for unboxed plain objects.
-
- // All properties on objects with this layout, in enumeration order.
- PropertyVector properties_;
-
- // Byte size of the data for objects with this layout.
- size_t size_;
-
- // Any 'new' script information associated with this layout.
- TypeNewScript* newScript_;
-
- // List for use in tracing objects with this layout. This has the same
- // structure as the trace list on a TypeDescr.
- int32_t* traceList_;
-
- // If this layout has been used to construct script or JSON constant
- // objects, this code might be filled in to more quickly fill in objects
- // from an array of values.
- GCPtrJitCode constructorCode_;
-
- // The following members are only used for unboxed arrays.
-
- // The type of array elements.
- JSValueType elementType_;
-
- public:
- UnboxedLayout()
- : nativeGroup_(nullptr), nativeShape_(nullptr),
- allocationScript_(nullptr), allocationPc_(nullptr), replacementGroup_(nullptr),
- size_(0), newScript_(nullptr), traceList_(nullptr), constructorCode_(nullptr),
- elementType_(JSVAL_TYPE_MAGIC)
- {}
-
- bool initProperties(const PropertyVector& properties, size_t size) {
- size_ = size;
- return properties_.appendAll(properties);
- }
-
- void initArray(JSValueType elementType) {
- elementType_ = elementType;
- }
-
- ~UnboxedLayout() {
- if (newScript_)
- newScript_->clear();
- js_delete(newScript_);
- js_free(traceList_);
-
- nativeGroup_.init(nullptr);
- nativeShape_.init(nullptr);
- replacementGroup_.init(nullptr);
- constructorCode_.init(nullptr);
- }
-
- bool isArray() const {
- return elementType_ != JSVAL_TYPE_MAGIC;
- }
-
- void detachFromCompartment();
-
- const PropertyVector& properties() const {
- return properties_;
- }
-
- TypeNewScript* newScript() const {
- return newScript_;
- }
-
- void setNewScript(TypeNewScript* newScript, bool writeBarrier = true);
-
- JSScript* allocationScript() const {
- return allocationScript_;
- }
-
- jsbytecode* allocationPc() const {
- return allocationPc_;
- }
-
- void setAllocationSite(JSScript* script, jsbytecode* pc) {
- allocationScript_ = script;
- allocationPc_ = pc;
- }
-
- const int32_t* traceList() const {
- return traceList_;
- }
-
- void setTraceList(int32_t* traceList) {
- traceList_ = traceList;
- }
-
- const Property* lookup(JSAtom* atom) const {
- for (size_t i = 0; i < properties_.length(); i++) {
- if (properties_[i].name == atom)
- return &properties_[i];
- }
- return nullptr;
- }
-
- const Property* lookup(jsid id) const {
- if (JSID_IS_STRING(id))
- return lookup(JSID_TO_ATOM(id));
- return nullptr;
- }
-
- size_t size() const {
- return size_;
- }
-
- ObjectGroup* nativeGroup() const {
- return nativeGroup_;
- }
-
- Shape* nativeShape() const {
- return nativeShape_;
- }
-
- jit::JitCode* constructorCode() const {
- return constructorCode_;
- }
-
- void setConstructorCode(jit::JitCode* code) {
- constructorCode_ = code;
- }
-
- JSValueType elementType() const {
- return elementType_;
- }
-
- inline gc::AllocKind getAllocKind() const;
-
- void trace(JSTracer* trc);
-
- size_t sizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf);
-
- static bool makeNativeGroup(JSContext* cx, ObjectGroup* group);
- static bool makeConstructorCode(JSContext* cx, HandleObjectGroup group);
-};
-
-// Class for expando objects holding extra properties given to an unboxed plain
-// object. These objects behave identically to normal native plain objects, and
-// have a separate Class to distinguish them for memory usage reporting.
-class UnboxedExpandoObject : public NativeObject
-{
- public:
- static const Class class_;
-};
-
-// Class for a plain object using an unboxed representation. The physical
-// layout of these objects is identical to that of an InlineTypedObject, though
-// these objects use an UnboxedLayout instead of a TypeDescr to keep track of
-// how their properties are stored.
-class UnboxedPlainObject : public JSObject
-{
- // Optional object which stores extra properties on this object. This is
- // not automatically barriered to avoid problems if the object is converted
- // to a native. See ensureExpando().
- UnboxedExpandoObject* expando_;
-
- // Start of the inline data, which immediately follows the group and extra properties.
- uint8_t data_[1];
-
- public:
- static const Class class_;
-
- static bool obj_lookupProperty(JSContext* cx, HandleObject obj,
- HandleId id, MutableHandleObject objp,
- MutableHandleShape propp);
-
- static bool obj_defineProperty(JSContext* cx, HandleObject obj, HandleId id,
- Handle<PropertyDescriptor> desc,
- ObjectOpResult& result);
-
- static bool obj_hasProperty(JSContext* cx, HandleObject obj, HandleId id, bool* foundp);
-
- static bool obj_getProperty(JSContext* cx, HandleObject obj, HandleValue receiver,
- HandleId id, MutableHandleValue vp);
-
- static bool obj_setProperty(JSContext* cx, HandleObject obj, HandleId id, HandleValue v,
- HandleValue receiver, ObjectOpResult& result);
-
- static bool obj_getOwnPropertyDescriptor(JSContext* cx, HandleObject obj, HandleId id,
- MutableHandle<PropertyDescriptor> desc);
-
- static bool obj_deleteProperty(JSContext* cx, HandleObject obj, HandleId id,
- ObjectOpResult& result);
-
- static bool obj_enumerate(JSContext* cx, HandleObject obj, AutoIdVector& properties,
- bool enumerableOnly);
- static bool obj_watch(JSContext* cx, HandleObject obj, HandleId id, HandleObject callable);
-
- inline const UnboxedLayout& layout() const;
-
- const UnboxedLayout& layoutDontCheckGeneration() const {
- return group()->unboxedLayoutDontCheckGeneration();
- }
-
- uint8_t* data() {
- return &data_[0];
- }
-
- UnboxedExpandoObject* maybeExpando() const {
- return expando_;
- }
-
- void initExpando() {
- expando_ = nullptr;
- }
-
- // For use during GC.
- JSObject** addressOfExpando() {
- return reinterpret_cast<JSObject**>(&expando_);
- }
-
- bool containsUnboxedOrExpandoProperty(ExclusiveContext* cx, jsid id) const;
-
- static UnboxedExpandoObject* ensureExpando(JSContext* cx, Handle<UnboxedPlainObject*> obj);
-
- bool setValue(ExclusiveContext* cx, const UnboxedLayout::Property& property, const Value& v);
- Value getValue(const UnboxedLayout::Property& property, bool maybeUninitialized = false);
-
- static bool convertToNative(JSContext* cx, JSObject* obj);
- static UnboxedPlainObject* create(ExclusiveContext* cx, HandleObjectGroup group,
- NewObjectKind newKind);
- static JSObject* createWithProperties(ExclusiveContext* cx, HandleObjectGroup group,
- NewObjectKind newKind, IdValuePair* properties);
-
- void fillAfterConvert(ExclusiveContext* cx,
- Handle<GCVector<Value>> values, size_t* valueCursor);
-
- static void trace(JSTracer* trc, JSObject* object);
-
- static size_t offsetOfExpando() {
- return offsetof(UnboxedPlainObject, expando_);
- }
-
- static size_t offsetOfData() {
- return offsetof(UnboxedPlainObject, data_[0]);
- }
-};
-
-// Try to construct an UnboxedLayout for each of the preliminary objects,
-// provided they all match the template shape. If successful, converts the
-// preliminary objects and their group to the new unboxed representation.
-bool
-TryConvertToUnboxedLayout(ExclusiveContext* cx, AutoEnterAnalysis& enter, Shape* templateShape,
- ObjectGroup* group, PreliminaryObjectArray* objects);
-
-inline gc::AllocKind
-UnboxedLayout::getAllocKind() const
-{
- MOZ_ASSERT(size());
- return gc::GetGCObjectKindForBytes(UnboxedPlainObject::offsetOfData() + size());
-}
-
-// Class for an array object using an unboxed representation.
-class UnboxedArrayObject : public JSObject
-{
- // Elements pointer for the object.
- uint8_t* elements_;
-
- // The nominal array length. This always fits in an int32_t.
- uint32_t length_;
-
- // Value indicating the allocated capacity and initialized length of the
- // array. The top CapacityBits bits are an index into CapacityArray, which
- // indicates the elements capacity. The low InitializedLengthBits store the
- // initialized length of the array.
- uint32_t capacityIndexAndInitializedLength_;
-
- // If the elements are inline, they will point here.
- uint8_t inlineElements_[1];
-
- public:
- static const uint32_t CapacityBits = 6;
- static const uint32_t CapacityShift = 26;
-
- static const uint32_t CapacityMask = uint32_t(-1) << CapacityShift;
- static const uint32_t InitializedLengthMask = (1 << CapacityShift) - 1;
-
- static const uint32_t MaximumCapacity = InitializedLengthMask;
- static const uint32_t MinimumDynamicCapacity = 8;
-
- static const uint32_t CapacityArray[];
-
- // Capacity index which indicates the array's length is also its capacity.
- static const uint32_t CapacityMatchesLengthIndex = 0;
-
- private:
- static inline uint32_t computeCapacity(uint32_t index, uint32_t length) {
- if (index == CapacityMatchesLengthIndex)
- return length;
- return CapacityArray[index];
- }
-
- static uint32_t chooseCapacityIndex(uint32_t capacity, uint32_t length);
- static uint32_t exactCapacityIndex(uint32_t capacity);
-
- public:
- static const Class class_;
-
- static bool obj_lookupProperty(JSContext* cx, HandleObject obj,
- HandleId id, MutableHandleObject objp,
- MutableHandleShape propp);
-
- static bool obj_defineProperty(JSContext* cx, HandleObject obj, HandleId id,
- Handle<PropertyDescriptor> desc,
- ObjectOpResult& result);
-
- static bool obj_hasProperty(JSContext* cx, HandleObject obj, HandleId id, bool* foundp);
-
- static bool obj_getProperty(JSContext* cx, HandleObject obj, HandleValue receiver,
- HandleId id, MutableHandleValue vp);
-
- static bool obj_setProperty(JSContext* cx, HandleObject obj, HandleId id, HandleValue v,
- HandleValue receiver, ObjectOpResult& result);
-
- static bool obj_getOwnPropertyDescriptor(JSContext* cx, HandleObject obj, HandleId id,
- MutableHandle<PropertyDescriptor> desc);
-
- static bool obj_deleteProperty(JSContext* cx, HandleObject obj, HandleId id,
- ObjectOpResult& result);
-
- static bool obj_enumerate(JSContext* cx, HandleObject obj, AutoIdVector& properties,
- bool enumerableOnly);
- static bool obj_watch(JSContext* cx, HandleObject obj, HandleId id, HandleObject callable);
-
- inline const UnboxedLayout& layout() const;
-
- const UnboxedLayout& layoutDontCheckGeneration() const {
- return group()->unboxedLayoutDontCheckGeneration();
- }
-
- JSValueType elementType() const {
- return layoutDontCheckGeneration().elementType();
- }
-
- uint32_t elementSize() const {
- return UnboxedTypeSize(elementType());
- }
-
- static bool convertToNative(JSContext* cx, JSObject* obj);
- static UnboxedArrayObject* create(ExclusiveContext* cx, HandleObjectGroup group,
- uint32_t length, NewObjectKind newKind,
- uint32_t maxLength = MaximumCapacity);
-
- static bool convertToNativeWithGroup(ExclusiveContext* cx, JSObject* obj,
- ObjectGroup* group, Shape* shape);
- bool convertInt32ToDouble(ExclusiveContext* cx, ObjectGroup* group);
-
- void fillAfterConvert(ExclusiveContext* cx,
- Handle<GCVector<Value>> values, size_t* valueCursor);
-
- static void trace(JSTracer* trc, JSObject* object);
- static void objectMoved(JSObject* obj, const JSObject* old);
- static void finalize(FreeOp* fop, JSObject* obj);
-
- static size_t objectMovedDuringMinorGC(JSTracer* trc, JSObject* dst, JSObject* src,
- gc::AllocKind allocKind);
-
- uint8_t* elements() {
- return elements_;
- }
-
- bool hasInlineElements() const {
- return elements_ == &inlineElements_[0];
- }
-
- uint32_t length() const {
- return length_;
- }
-
- uint32_t initializedLength() const {
- return capacityIndexAndInitializedLength_ & InitializedLengthMask;
- }
-
- uint32_t capacityIndex() const {
- return (capacityIndexAndInitializedLength_ & CapacityMask) >> CapacityShift;
- }
-
- uint32_t capacity() const {
- return computeCapacity(capacityIndex(), length());
- }
-
- bool containsProperty(ExclusiveContext* cx, jsid id);
-
- bool setElement(ExclusiveContext* cx, size_t index, const Value& v);
- bool initElement(ExclusiveContext* cx, size_t index, const Value& v);
- void initElementNoTypeChange(size_t index, const Value& v);
- Value getElement(size_t index);
-
- template <JSValueType Type> inline bool setElementSpecific(ExclusiveContext* cx, size_t index,
- const Value& v);
- template <JSValueType Type> inline void setElementNoTypeChangeSpecific(size_t index, const Value& v);
- template <JSValueType Type> inline bool initElementSpecific(ExclusiveContext* cx, size_t index,
- const Value& v);
- template <JSValueType Type> inline void initElementNoTypeChangeSpecific(size_t index, const Value& v);
- template <JSValueType Type> inline Value getElementSpecific(size_t index);
- template <JSValueType Type> inline void triggerPreBarrier(size_t index);
-
- bool growElements(ExclusiveContext* cx, size_t cap);
- void shrinkElements(ExclusiveContext* cx, size_t cap);
-
- static uint32_t offsetOfElements() {
- return offsetof(UnboxedArrayObject, elements_);
- }
- static uint32_t offsetOfLength() {
- return offsetof(UnboxedArrayObject, length_);
- }
- static uint32_t offsetOfCapacityIndexAndInitializedLength() {
- return offsetof(UnboxedArrayObject, capacityIndexAndInitializedLength_);
- }
- static uint32_t offsetOfInlineElements() {
- return offsetof(UnboxedArrayObject, inlineElements_);
- }
-
- void setLengthInt32(uint32_t length) {
- MOZ_ASSERT(length <= INT32_MAX);
- length_ = length;
- }
-
- inline void setLength(ExclusiveContext* cx, uint32_t len);
- inline void setInitializedLength(uint32_t initlen);
-
- inline void setInitializedLengthNoBarrier(uint32_t initlen) {
- MOZ_ASSERT(initlen <= InitializedLengthMask);
- capacityIndexAndInitializedLength_ =
- (capacityIndexAndInitializedLength_ & CapacityMask) | initlen;
- }
-
- private:
- void setInlineElements() {
- elements_ = &inlineElements_[0];
- }
-
- void setCapacityIndex(uint32_t index) {
- MOZ_ASSERT(index <= (CapacityMask >> CapacityShift));
- capacityIndexAndInitializedLength_ =
- (index << CapacityShift) | initializedLength();
- }
-};
-
-} // namespace js
-
-namespace JS {
-
-template <>
-struct DeletePolicy<js::UnboxedLayout> : public js::GCManagedDeletePolicy<js::UnboxedLayout>
-{};
-
-} /* namespace JS */
-
-#endif /* vm_UnboxedObject_h */