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-rw-r--r--js/src/vm/UnboxedObject.h207
1 files changed, 1 insertions, 206 deletions
diff --git a/js/src/vm/UnboxedObject.h b/js/src/vm/UnboxedObject.h
index 779dd14c7..ba66434bc 100644
--- a/js/src/vm/UnboxedObject.h
+++ b/js/src/vm/UnboxedObject.h
@@ -96,17 +96,11 @@ class UnboxedLayout : public mozilla::LinkedListElement<UnboxedLayout>
// 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)
+ size_(0), newScript_(nullptr), traceList_(nullptr), constructorCode_(nullptr)
{}
bool initProperties(const PropertyVector& properties, size_t size) {
@@ -114,10 +108,6 @@ class UnboxedLayout : public mozilla::LinkedListElement<UnboxedLayout>
return properties_.appendAll(properties);
}
- void initArray(JSValueType elementType) {
- elementType_ = elementType;
- }
-
~UnboxedLayout() {
if (newScript_)
newScript_->clear();
@@ -130,10 +120,6 @@ class UnboxedLayout : public mozilla::LinkedListElement<UnboxedLayout>
constructorCode_.init(nullptr);
}
- bool isArray() const {
- return elementType_ != JSVAL_TYPE_MAGIC;
- }
-
void detachFromCompartment();
const PropertyVector& properties() const {
@@ -201,10 +187,6 @@ class UnboxedLayout : public mozilla::LinkedListElement<UnboxedLayout>
constructorCode_ = code;
}
- JSValueType elementType() const {
- return elementType_;
- }
-
inline gc::AllocKind getAllocKind() const;
void trace(JSTracer* trc);
@@ -324,193 +306,6 @@ UnboxedLayout::getAllocKind() const
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 {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 22:01:25 +0000