Add m-esr52 at 52.6.0

1 files changed, 274 insertions, 0 deletions

diff --git a/js/src/jsapi-tests/testProfileStrings.cpp b/js/src/jsapi-tests/testProfileStrings.cpp
new file mode 100644
index 000000000..f283161b5
--- /dev/null
+++ b/js/src/jsapi-tests/testProfileStrings.cpp
@@ -0,0 +1,274 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ *
+ * Tests the stack-based instrumentation profiler on a JSRuntime
+ */
+/* 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 "jscntxt.h"
+
+#include "jsapi-tests/tests.h"
+
+static js::ProfileEntry pstack[10];
+static uint32_t psize = 0;
+static uint32_t max_stack = 0;
+
+static void
+reset(JSContext* cx)
+{
+    psize = max_stack = 0;
+    memset(pstack, 0, sizeof(pstack));
+    cx->spsProfiler.stringsReset();
+    cx->spsProfiler.enableSlowAssertions(true);
+    js::EnableContextProfilingStack(cx, true);
+}
+
+static const JSClass ptestClass = {
+    "Prof", 0
+};
+
+static bool
+test_fn(JSContext* cx, unsigned argc, JS::Value* vp)
+{
+    max_stack = psize;
+    return true;
+}
+
+static bool
+test_fn2(JSContext* cx, unsigned argc, JS::Value* vp)
+{
+    JS::RootedValue r(cx);
+    JS::RootedObject global(cx, JS::CurrentGlobalOrNull(cx));
+    return JS_CallFunctionName(cx, global, "d", JS::HandleValueArray::empty(), &r);
+}
+
+static bool
+enable(JSContext* cx, unsigned argc, JS::Value* vp)
+{
+    js::EnableContextProfilingStack(cx, true);
+    return true;
+}
+
+static bool
+disable(JSContext* cx, unsigned argc, JS::Value* vp)
+{
+    js::EnableContextProfilingStack(cx, false);
+    return true;
+}
+
+static bool
+Prof(JSContext* cx, unsigned argc, JS::Value* vp)
+{
+    JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
+    JSObject* obj = JS_NewObjectForConstructor(cx, &ptestClass, args);
+    if (!obj)
+        return false;
+    args.rval().setObject(*obj);
+    return true;
+}
+
+static const JSFunctionSpec ptestFunctions[] = {
+    JS_FS("test_fn", test_fn, 0, 0),
+    JS_FS("test_fn2", test_fn2, 0, 0),
+    JS_FS("enable", enable, 0, 0),
+    JS_FS("disable", disable, 0, 0),
+    JS_FS_END
+};
+
+static JSObject*
+initialize(JSContext* cx)
+{
+    js::SetContextProfilingStack(cx, pstack, &psize, 10);
+    JS::RootedObject global(cx, JS::CurrentGlobalOrNull(cx));
+    return JS_InitClass(cx, global, nullptr, &ptestClass, Prof, 0,
+                        nullptr, ptestFunctions, nullptr, nullptr);
+}
+
+BEGIN_TEST(testProfileStrings_isCalledWithInterpreter)
+{
+    CHECK(initialize(cx));
+
+    EXEC("function g() { var p = new Prof(); p.test_fn(); }");
+    EXEC("function f() { g(); }");
+    EXEC("function e() { f(); }");
+    EXEC("function d() { e(); }");
+    EXEC("function c() { d(); }");
+    EXEC("function b() { c(); }");
+    EXEC("function a() { b(); }");
+    EXEC("function check() { var p = new Prof(); p.test_fn(); a(); }");
+    EXEC("function check2() { var p = new Prof(); p.test_fn2(); }");
+
+    reset(cx);
+    {
+        JS::RootedValue rval(cx);
+        /* Make sure the stack resets and we have an entry for each stack */
+        CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
+                                  &rval));
+        CHECK(psize == 0);
+        CHECK(max_stack >= 8);
+        CHECK(cx->runtime()->spsProfiler.stringsCount() == 8);
+        /* Make sure the stack resets and we added no new entries */
+        max_stack = 0;
+        CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
+                                  &rval));
+        CHECK(psize == 0);
+        CHECK(max_stack >= 8);
+        CHECK(cx->runtime()->spsProfiler.stringsCount() == 8);
+    }
+    reset(cx);
+    {
+        JS::RootedValue rval(cx);
+        CHECK(JS_CallFunctionName(cx, global, "check2", JS::HandleValueArray::empty(),
+                                  &rval));
+        CHECK(cx->runtime()->spsProfiler.stringsCount() == 5);
+        CHECK(max_stack >= 6);
+        CHECK(psize == 0);
+    }
+    js::EnableContextProfilingStack(cx, false);
+    js::SetContextProfilingStack(cx, pstack, &psize, 3);
+    reset(cx);
+    {
+        JS::RootedValue rval(cx);
+        pstack[3].setLabel((char*) 1234);
+        CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
+                                  &rval));
+        CHECK((size_t) pstack[3].label() == 1234);
+        CHECK(max_stack >= 8);
+        CHECK(psize == 0);
+    }
+    return true;
+}
+END_TEST(testProfileStrings_isCalledWithInterpreter)
+
+BEGIN_TEST(testProfileStrings_isCalledWithJIT)
+{
+    CHECK(initialize(cx));
+    JS::ContextOptionsRef(cx).setBaseline(true)
+                             .setIon(true);
+
+    EXEC("function g() { var p = new Prof(); p.test_fn(); }");
+    EXEC("function f() { g(); }");
+    EXEC("function e() { f(); }");
+    EXEC("function d() { e(); }");
+    EXEC("function c() { d(); }");
+    EXEC("function b() { c(); }");
+    EXEC("function a() { b(); }");
+    EXEC("function check() { var p = new Prof(); p.test_fn(); a(); }");
+    EXEC("function check2() { var p = new Prof(); p.test_fn2(); }");
+
+    reset(cx);
+    {
+        JS::RootedValue rval(cx);
+        /* Make sure the stack resets and we have an entry for each stack */
+        CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
+                                  &rval));
+        CHECK(psize == 0);
+        CHECK(max_stack >= 8);
+
+        /* Make sure the stack resets and we added no new entries */
+        uint32_t cnt = cx->runtime()->spsProfiler.stringsCount();
+        max_stack = 0;
+        CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
+                                  &rval));
+        CHECK(psize == 0);
+        CHECK(cx->runtime()->spsProfiler.stringsCount() == cnt);
+        CHECK(max_stack >= 8);
+    }
+
+    js::EnableContextProfilingStack(cx, false);
+    js::SetContextProfilingStack(cx, pstack, &psize, 3);
+    reset(cx);
+    {
+        /* Limit the size of the stack and make sure we don't overflow */
+        JS::RootedValue rval(cx);
+        pstack[3].setLabel((char*) 1234);
+        CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
+                                  &rval));
+        CHECK(psize == 0);
+        CHECK(max_stack >= 8);
+        CHECK((size_t) pstack[3].label() == 1234);
+    }
+    return true;
+}
+END_TEST(testProfileStrings_isCalledWithJIT)
+
+BEGIN_TEST(testProfileStrings_isCalledWhenError)
+{
+    CHECK(initialize(cx));
+    JS::ContextOptionsRef(cx).setBaseline(true)
+                             .setIon(true);
+
+    EXEC("function check2() { throw 'a'; }");
+
+    reset(cx);
+    {
+        JS::RootedValue rval(cx);
+        /* Make sure the stack resets and we have an entry for each stack */
+        bool ok = JS_CallFunctionName(cx, global, "check2", JS::HandleValueArray::empty(),
+                                      &rval);
+        CHECK(!ok);
+        CHECK(psize == 0);
+        CHECK(cx->runtime()->spsProfiler.stringsCount() == 1);
+
+        JS_ClearPendingException(cx);
+    }
+    return true;
+}
+END_TEST(testProfileStrings_isCalledWhenError)
+
+BEGIN_TEST(testProfileStrings_worksWhenEnabledOnTheFly)
+{
+    CHECK(initialize(cx));
+    JS::ContextOptionsRef(cx).setBaseline(true)
+                             .setIon(true);
+
+    EXEC("function b(p) { p.test_fn(); }");
+    EXEC("function a() { var p = new Prof(); p.enable(); b(p); }");
+    reset(cx);
+    js::EnableContextProfilingStack(cx, false);
+    {
+        /* enable it in the middle of JS and make sure things check out */
+        JS::RootedValue rval(cx);
+        JS_CallFunctionName(cx, global, "a", JS::HandleValueArray::empty(), &rval);
+        CHECK(psize == 0);
+        CHECK(max_stack >= 1);
+        CHECK(cx->runtime()->spsProfiler.stringsCount() == 1);
+    }
+
+    EXEC("function d(p) { p.disable(); }");
+    EXEC("function c() { var p = new Prof(); d(p); }");
+    reset(cx);
+    {
+        /* now disable in the middle of js */
+        JS::RootedValue rval(cx);
+        JS_CallFunctionName(cx, global, "c", JS::HandleValueArray::empty(), &rval);
+        CHECK(psize == 0);
+    }
+
+    EXEC("function e() { var p = new Prof(); d(p); p.enable(); b(p); }");
+    reset(cx);
+    {
+        /* now disable in the middle of js, but re-enable before final exit */
+        JS::RootedValue rval(cx);
+        JS_CallFunctionName(cx, global, "e", JS::HandleValueArray::empty(), &rval);
+        CHECK(psize == 0);
+        CHECK(max_stack >= 3);
+    }
+
+    EXEC("function h() { }");
+    EXEC("function g(p) { p.disable(); for (var i = 0; i < 100; i++) i++; }");
+    EXEC("function f() { g(new Prof()); }");
+    reset(cx);
+    cx->runtime()->spsProfiler.enableSlowAssertions(false);
+    {
+        JS::RootedValue rval(cx);
+        /* disable, and make sure that if we try to re-enter the JIT the pop
+         * will still happen */
+        JS_CallFunctionName(cx, global, "f", JS::HandleValueArray::empty(), &rval);
+        CHECK(psize == 0);
+    }
+    return true;
+}
+END_TEST(testProfileStrings_worksWhenEnabledOnTheFly)