// Copyright 2010 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // // Tests of profiles generator and utilities. #include "src/v8.h" #include "include/v8-profiler.h" #include "src/base/platform/platform.h" #include "src/deoptimizer.h" #include "src/profiler/cpu-profiler-inl.h" #include "src/profiler/profiler-listener.h" #include "src/utils.h" #include "test/cctest/cctest.h" #include "test/cctest/profiler-extension.h" #include "include/libplatform/v8-tracing.h" #include "src/tracing/trace-event.h" using i::CodeEntry; using i::CpuProfile; using i::CpuProfiler; using i::CpuProfilesCollection; using i::Heap; using i::ProfileGenerator; using i::ProfileNode; using i::ProfilerEventsProcessor; using i::ProfilerListener; using i::ScopedVector; using i::Vector; // Helper methods static v8::Local GetFunction(v8::Local env, const char* name) { return v8::Local::Cast( env->Global()->Get(env, v8_str(name)).ToLocalChecked()); } static size_t offset(const char* src, const char* substring) { const char* it = strstr(src, substring); CHECK(it); return static_cast(it - src); } static const char* reason(const i::DeoptimizeReason reason) { return i::DeoptimizeReasonToString(reason); } TEST(StartStop) { i::Isolate* isolate = CcTest::i_isolate(); CpuProfilesCollection profiles(isolate); ProfileGenerator generator(isolate, &profiles); std::unique_ptr processor( new ProfilerEventsProcessor(isolate, &generator, v8::base::TimeDelta::FromMicroseconds(100))); processor->Start(); processor->StopSynchronously(); } static void EnqueueTickSampleEvent(ProfilerEventsProcessor* proc, i::Address frame1, i::Address frame2 = NULL, i::Address frame3 = NULL) { v8::TickSample* sample = proc->StartTickSample(); sample->pc = frame1; sample->tos = frame1; sample->frames_count = 0; if (frame2 != NULL) { sample->stack[0] = frame2; sample->frames_count = 1; } if (frame3 != NULL) { sample->stack[1] = frame3; sample->frames_count = 2; } proc->FinishTickSample(); } namespace { class TestSetup { public: TestSetup() : old_flag_prof_browser_mode_(i::FLAG_prof_browser_mode) { i::FLAG_prof_browser_mode = false; } ~TestSetup() { i::FLAG_prof_browser_mode = old_flag_prof_browser_mode_; } private: bool old_flag_prof_browser_mode_; }; } // namespace i::AbstractCode* CreateCode(LocalContext* env) { static int counter = 0; i::EmbeddedVector script; i::EmbeddedVector name; i::SNPrintF(name, "function_%d", ++counter); const char* name_start = name.start(); i::SNPrintF(script, "function %s() {\n" "var counter = 0;\n" "for (var i = 0; i < %d; ++i) counter += i;\n" "return '%s_' + counter;\n" "}\n" "%s();\n", name_start, counter, name_start, name_start); CompileRun(script.start()); i::Handle fun = i::Handle::cast( v8::Utils::OpenHandle(*GetFunction(env->local(), name_start))); return fun->abstract_code(); } TEST(CodeEvents) { CcTest::InitializeVM(); LocalContext env; i::Isolate* isolate = CcTest::i_isolate(); i::Factory* factory = isolate->factory(); TestSetup test_setup; i::HandleScope scope(isolate); i::AbstractCode* aaa_code = CreateCode(&env); i::AbstractCode* comment_code = CreateCode(&env); i::AbstractCode* args5_code = CreateCode(&env); i::AbstractCode* comment2_code = CreateCode(&env); i::AbstractCode* moved_code = CreateCode(&env); i::AbstractCode* args3_code = CreateCode(&env); i::AbstractCode* args4_code = CreateCode(&env); CpuProfilesCollection* profiles = new CpuProfilesCollection(isolate); ProfileGenerator* generator = new ProfileGenerator(isolate, profiles); ProfilerEventsProcessor* processor = new ProfilerEventsProcessor( isolate, generator, v8::base::TimeDelta::FromMicroseconds(100)); CpuProfiler profiler(isolate, profiles, generator, processor); profiles->StartProfiling("", false); processor->Start(); ProfilerListener profiler_listener(isolate); isolate->code_event_dispatcher()->AddListener(&profiler_listener); profiler_listener.AddObserver(&profiler); // Enqueue code creation events. const char* aaa_str = "aaa"; i::Handle aaa_name = factory->NewStringFromAsciiChecked(aaa_str); profiler_listener.CodeCreateEvent(i::Logger::FUNCTION_TAG, aaa_code, *aaa_name); profiler_listener.CodeCreateEvent(i::Logger::BUILTIN_TAG, comment_code, "comment"); profiler_listener.CodeCreateEvent(i::Logger::STUB_TAG, args5_code, 5); profiler_listener.CodeCreateEvent(i::Logger::BUILTIN_TAG, comment2_code, "comment2"); profiler_listener.CodeMoveEvent(comment2_code, moved_code->address()); profiler_listener.CodeCreateEvent(i::Logger::STUB_TAG, args3_code, 3); profiler_listener.CodeCreateEvent(i::Logger::STUB_TAG, args4_code, 4); // Enqueue a tick event to enable code events processing. EnqueueTickSampleEvent(processor, aaa_code->address()); profiler_listener.RemoveObserver(&profiler); isolate->code_event_dispatcher()->RemoveListener(&profiler_listener); processor->StopSynchronously(); // Check the state of profile generator. CodeEntry* aaa = generator->code_map()->FindEntry(aaa_code->address()); CHECK(aaa); CHECK_EQ(0, strcmp(aaa_str, aaa->name())); CodeEntry* comment = generator->code_map()->FindEntry(comment_code->address()); CHECK(comment); CHECK_EQ(0, strcmp("comment", comment->name())); CodeEntry* args5 = generator->code_map()->FindEntry(args5_code->address()); CHECK(args5); CHECK_EQ(0, strcmp("5", args5->name())); CHECK(!generator->code_map()->FindEntry(comment2_code->address())); CodeEntry* comment2 = generator->code_map()->FindEntry(moved_code->address()); CHECK(comment2); CHECK_EQ(0, strcmp("comment2", comment2->name())); } template static int CompareProfileNodes(const T* p1, const T* p2) { return strcmp((*p1)->entry()->name(), (*p2)->entry()->name()); } TEST(TickEvents) { TestSetup test_setup; LocalContext env; i::Isolate* isolate = CcTest::i_isolate(); i::HandleScope scope(isolate); i::AbstractCode* frame1_code = CreateCode(&env); i::AbstractCode* frame2_code = CreateCode(&env); i::AbstractCode* frame3_code = CreateCode(&env); CpuProfilesCollection* profiles = new CpuProfilesCollection(isolate); ProfileGenerator* generator = new ProfileGenerator(isolate, profiles); ProfilerEventsProcessor* processor = new ProfilerEventsProcessor(CcTest::i_isolate(), generator, v8::base::TimeDelta::FromMicroseconds(100)); CpuProfiler profiler(isolate, profiles, generator, processor); profiles->StartProfiling("", false); processor->Start(); ProfilerListener profiler_listener(isolate); isolate->code_event_dispatcher()->AddListener(&profiler_listener); profiler_listener.AddObserver(&profiler); profiler_listener.CodeCreateEvent(i::Logger::BUILTIN_TAG, frame1_code, "bbb"); profiler_listener.CodeCreateEvent(i::Logger::STUB_TAG, frame2_code, 5); profiler_listener.CodeCreateEvent(i::Logger::BUILTIN_TAG, frame3_code, "ddd"); EnqueueTickSampleEvent(processor, frame1_code->instruction_start()); EnqueueTickSampleEvent( processor, frame2_code->instruction_start() + frame2_code->ExecutableSize() / 2, frame1_code->instruction_start() + frame1_code->ExecutableSize() / 2); EnqueueTickSampleEvent(processor, frame3_code->instruction_end() - 1, frame2_code->instruction_end() - 1, frame1_code->instruction_end() - 1); profiler_listener.RemoveObserver(&profiler); isolate->code_event_dispatcher()->RemoveListener(&profiler_listener); processor->StopSynchronously(); CpuProfile* profile = profiles->StopProfiling(""); CHECK(profile); // Check call trees. const i::List* top_down_root_children = profile->top_down()->root()->children(); CHECK_EQ(1, top_down_root_children->length()); CHECK_EQ(0, strcmp("bbb", top_down_root_children->last()->entry()->name())); const i::List* top_down_bbb_children = top_down_root_children->last()->children(); CHECK_EQ(1, top_down_bbb_children->length()); CHECK_EQ(0, strcmp("5", top_down_bbb_children->last()->entry()->name())); const i::List* top_down_stub_children = top_down_bbb_children->last()->children(); CHECK_EQ(1, top_down_stub_children->length()); CHECK_EQ(0, strcmp("ddd", top_down_stub_children->last()->entry()->name())); const i::List* top_down_ddd_children = top_down_stub_children->last()->children(); CHECK_EQ(0, top_down_ddd_children->length()); isolate->code_event_dispatcher()->RemoveListener(&profiler_listener); } // http://crbug/51594 // This test must not crash. TEST(CrashIfStoppingLastNonExistentProfile) { CcTest::InitializeVM(); TestSetup test_setup; std::unique_ptr profiler(new CpuProfiler(CcTest::i_isolate())); profiler->StartProfiling("1"); profiler->StopProfiling("2"); profiler->StartProfiling("1"); profiler->StopProfiling(""); } // http://code.google.com/p/v8/issues/detail?id=1398 // Long stacks (exceeding max frames limit) must not be erased. TEST(Issue1398) { TestSetup test_setup; LocalContext env; i::Isolate* isolate = CcTest::i_isolate(); i::HandleScope scope(isolate); i::AbstractCode* code = CreateCode(&env); CpuProfilesCollection* profiles = new CpuProfilesCollection(isolate); ProfileGenerator* generator = new ProfileGenerator(isolate, profiles); ProfilerEventsProcessor* processor = new ProfilerEventsProcessor(CcTest::i_isolate(), generator, v8::base::TimeDelta::FromMicroseconds(100)); CpuProfiler profiler(isolate, profiles, generator, processor); profiles->StartProfiling("", false); processor->Start(); ProfilerListener profiler_listener(isolate); isolate->code_event_dispatcher()->AddListener(&profiler_listener); profiler_listener.AddObserver(&profiler); profiler_listener.CodeCreateEvent(i::Logger::BUILTIN_TAG, code, "bbb"); v8::TickSample* sample = processor->StartTickSample(); sample->pc = code->address(); sample->tos = 0; sample->frames_count = v8::TickSample::kMaxFramesCount; for (unsigned i = 0; i < sample->frames_count; ++i) { sample->stack[i] = code->address(); } processor->FinishTickSample(); profiler_listener.RemoveObserver(&profiler); isolate->code_event_dispatcher()->RemoveListener(&profiler_listener); processor->StopSynchronously(); CpuProfile* profile = profiles->StopProfiling(""); CHECK(profile); unsigned actual_depth = 0; const ProfileNode* node = profile->top_down()->root(); while (node->children()->length() > 0) { node = node->children()->last(); ++actual_depth; } CHECK_EQ(1 + v8::TickSample::kMaxFramesCount, actual_depth); // +1 for PC. } TEST(DeleteAllCpuProfiles) { CcTest::InitializeVM(); TestSetup test_setup; std::unique_ptr profiler(new CpuProfiler(CcTest::i_isolate())); CHECK_EQ(0, profiler->GetProfilesCount()); profiler->DeleteAllProfiles(); CHECK_EQ(0, profiler->GetProfilesCount()); profiler->StartProfiling("1"); profiler->StopProfiling("1"); CHECK_EQ(1, profiler->GetProfilesCount()); profiler->DeleteAllProfiles(); CHECK_EQ(0, profiler->GetProfilesCount()); profiler->StartProfiling("1"); profiler->StartProfiling("2"); profiler->StopProfiling("2"); profiler->StopProfiling("1"); CHECK_EQ(2, profiler->GetProfilesCount()); profiler->DeleteAllProfiles(); CHECK_EQ(0, profiler->GetProfilesCount()); // Test profiling cancellation by the 'delete' command. profiler->StartProfiling("1"); profiler->StartProfiling("2"); CHECK_EQ(0, profiler->GetProfilesCount()); profiler->DeleteAllProfiles(); CHECK_EQ(0, profiler->GetProfilesCount()); } static bool FindCpuProfile(v8::CpuProfiler* v8profiler, const v8::CpuProfile* v8profile) { i::CpuProfiler* profiler = reinterpret_cast(v8profiler); const i::CpuProfile* profile = reinterpret_cast(v8profile); int length = profiler->GetProfilesCount(); for (int i = 0; i < length; i++) { if (profile == profiler->GetProfile(i)) return true; } return false; } TEST(DeleteCpuProfile) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::CpuProfiler* cpu_profiler = v8::CpuProfiler::New(env->GetIsolate()); i::CpuProfiler* iprofiler = reinterpret_cast(cpu_profiler); CHECK_EQ(0, iprofiler->GetProfilesCount()); v8::Local name1 = v8_str("1"); cpu_profiler->StartProfiling(name1); v8::CpuProfile* p1 = cpu_profiler->StopProfiling(name1); CHECK(p1); CHECK_EQ(1, iprofiler->GetProfilesCount()); CHECK(FindCpuProfile(cpu_profiler, p1)); p1->Delete(); CHECK_EQ(0, iprofiler->GetProfilesCount()); v8::Local name2 = v8_str("2"); cpu_profiler->StartProfiling(name2); v8::CpuProfile* p2 = cpu_profiler->StopProfiling(name2); CHECK(p2); CHECK_EQ(1, iprofiler->GetProfilesCount()); CHECK(FindCpuProfile(cpu_profiler, p2)); v8::Local name3 = v8_str("3"); cpu_profiler->StartProfiling(name3); v8::CpuProfile* p3 = cpu_profiler->StopProfiling(name3); CHECK(p3); CHECK_EQ(2, iprofiler->GetProfilesCount()); CHECK_NE(p2, p3); CHECK(FindCpuProfile(cpu_profiler, p3)); CHECK(FindCpuProfile(cpu_profiler, p2)); p2->Delete(); CHECK_EQ(1, iprofiler->GetProfilesCount()); CHECK(!FindCpuProfile(cpu_profiler, p2)); CHECK(FindCpuProfile(cpu_profiler, p3)); p3->Delete(); CHECK_EQ(0, iprofiler->GetProfilesCount()); cpu_profiler->Dispose(); } TEST(ProfileStartEndTime) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::CpuProfiler* cpu_profiler = v8::CpuProfiler::New(env->GetIsolate()); v8::Local profile_name = v8_str("test"); cpu_profiler->StartProfiling(profile_name); const v8::CpuProfile* profile = cpu_profiler->StopProfiling(profile_name); CHECK(profile->GetStartTime() <= profile->GetEndTime()); cpu_profiler->Dispose(); } class ProfilerHelper { public: explicit ProfilerHelper(const v8::Local& context) : context_(context), profiler_(v8::CpuProfiler::New(context->GetIsolate())) { i::ProfilerExtension::set_profiler(profiler_); } ~ProfilerHelper() { i::ProfilerExtension::set_profiler(static_cast(nullptr)); profiler_->Dispose(); } v8::CpuProfile* Run(v8::Local function, v8::Local argv[], int argc, unsigned min_js_samples = 0, unsigned min_external_samples = 0, bool collect_samples = false); v8::CpuProfiler* profiler() { return profiler_; } private: v8::Local context_; v8::CpuProfiler* profiler_; }; v8::CpuProfile* ProfilerHelper::Run(v8::Local function, v8::Local argv[], int argc, unsigned min_js_samples, unsigned min_external_samples, bool collect_samples) { v8::Local profile_name = v8_str("my_profile"); profiler_->SetSamplingInterval(100); profiler_->StartProfiling(profile_name, collect_samples); v8::internal::CpuProfiler* iprofiler = reinterpret_cast(profiler_); v8::sampler::Sampler* sampler = iprofiler->processor()->sampler(); sampler->StartCountingSamples(); do { function->Call(context_, context_->Global(), argc, argv).ToLocalChecked(); } while (sampler->js_sample_count() < min_js_samples || sampler->external_sample_count() < min_external_samples); v8::CpuProfile* profile = profiler_->StopProfiling(profile_name); CHECK(profile); // Dump collected profile to have a better diagnostic in case of failure. reinterpret_cast(profile)->Print(); return profile; } static const v8::CpuProfileNode* FindChild(v8::Local context, const v8::CpuProfileNode* node, const char* name) { int count = node->GetChildrenCount(); v8::Local name_handle = v8_str(name); for (int i = 0; i < count; i++) { const v8::CpuProfileNode* child = node->GetChild(i); if (name_handle->Equals(context, child->GetFunctionName()).FromJust()) { return child; } } return NULL; } static const v8::CpuProfileNode* GetChild(v8::Local context, const v8::CpuProfileNode* node, const char* name) { const v8::CpuProfileNode* result = FindChild(context, node, name); if (!result) { char buffer[100]; i::SNPrintF(i::ArrayVector(buffer), "Failed to GetChild: %s", name); FATAL(buffer); } return result; } static void CheckSimpleBranch(v8::Local context, const v8::CpuProfileNode* node, const char* names[], int length) { for (int i = 0; i < length; i++) { const char* name = names[i]; node = GetChild(context, node, name); } } static const ProfileNode* GetSimpleBranch(v8::Local context, v8::CpuProfile* profile, const char* names[], int length) { const v8::CpuProfileNode* node = profile->GetTopDownRoot(); for (int i = 0; i < length; i++) { node = GetChild(context, node, names[i]); } return reinterpret_cast(node); } static const char* cpu_profiler_test_source = "%NeverOptimizeFunction(loop);\n" "%NeverOptimizeFunction(delay);\n" "%NeverOptimizeFunction(bar);\n" "%NeverOptimizeFunction(baz);\n" "%NeverOptimizeFunction(foo);\n" "%NeverOptimizeFunction(start);\n" "function loop(timeout) {\n" " this.mmm = 0;\n" " var start = Date.now();\n" " do {\n" " var n = 1000;\n" " while(n > 1) {\n" " n--;\n" " this.mmm += n * n * n;\n" " }\n" " } while (Date.now() - start < timeout);\n" "}\n" "function delay() { loop(10); }\n" "function bar() { delay(); }\n" "function baz() { delay(); }\n" "function foo() {\n" " delay();\n" " bar();\n" " delay();\n" " baz();\n" "}\n" "function start(duration) {\n" " var start = Date.now();\n" " do {\n" " foo();\n" " } while (Date.now() - start < duration);\n" "}\n"; // Check that the profile tree for the script above will look like the // following: // // [Top down]: // 1062 0 (root) [-1] // 1054 0 start [-1] // 1054 1 foo [-1] // 265 0 baz [-1] // 265 1 delay [-1] // 264 264 loop [-1] // 525 3 delay [-1] // 522 522 loop [-1] // 263 0 bar [-1] // 263 1 delay [-1] // 262 262 loop [-1] // 2 2 (program) [-1] // 6 6 (garbage collector) [-1] TEST(CollectCpuProfile) { i::FLAG_allow_natives_syntax = true; LocalContext env; v8::HandleScope scope(env->GetIsolate()); CompileRun(cpu_profiler_test_source); v8::Local function = GetFunction(env.local(), "start"); int32_t profiling_interval_ms = 200; v8::Local args[] = { v8::Integer::New(env->GetIsolate(), profiling_interval_ms)}; ProfilerHelper helper(env.local()); v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 1000); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start"); const v8::CpuProfileNode* foo_node = GetChild(env.local(), start_node, "foo"); const char* bar_branch[] = {"bar", "delay", "loop"}; CheckSimpleBranch(env.local(), foo_node, bar_branch, arraysize(bar_branch)); const char* baz_branch[] = {"baz", "delay", "loop"}; CheckSimpleBranch(env.local(), foo_node, baz_branch, arraysize(baz_branch)); const char* delay_branch[] = {"delay", "loop"}; CheckSimpleBranch(env.local(), foo_node, delay_branch, arraysize(delay_branch)); profile->Delete(); } static const char* hot_deopt_no_frame_entry_test_source = "%NeverOptimizeFunction(foo);\n" "%NeverOptimizeFunction(start);\n" "function foo(a, b) {\n" " return a + b;\n" "}\n" "function start(timeout) {\n" " var start = Date.now();\n" " do {\n" " for (var i = 1; i < 1000; ++i) foo(1, i);\n" " var duration = Date.now() - start;\n" " } while (duration < timeout);\n" " return duration;\n" "}\n"; // Check that the profile tree for the script above will look like the // following: // // [Top down]: // 1062 0 (root) [-1] // 1054 0 start [-1] // 1054 1 foo [-1] // 2 2 (program) [-1] // 6 6 (garbage collector) [-1] // // The test checks no FP ranges are present in a deoptimized function. // If 'foo' has no ranges the samples falling into the prologue will miss the // 'start' function on the stack, so 'foo' will be attached to the (root). TEST(HotDeoptNoFrameEntry) { i::FLAG_allow_natives_syntax = true; LocalContext env; v8::HandleScope scope(env->GetIsolate()); CompileRun(hot_deopt_no_frame_entry_test_source); v8::Local function = GetFunction(env.local(), "start"); int32_t profiling_interval_ms = 200; v8::Local args[] = { v8::Integer::New(env->GetIsolate(), profiling_interval_ms)}; ProfilerHelper helper(env.local()); v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 1000); function->Call(env.local(), env->Global(), arraysize(args), args) .ToLocalChecked(); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start"); GetChild(env.local(), start_node, "foo"); profile->Delete(); } TEST(CollectCpuProfileSamples) { i::FLAG_allow_natives_syntax = true; LocalContext env; v8::HandleScope scope(env->GetIsolate()); CompileRun(cpu_profiler_test_source); v8::Local function = GetFunction(env.local(), "start"); int32_t profiling_interval_ms = 200; v8::Local args[] = { v8::Integer::New(env->GetIsolate(), profiling_interval_ms)}; ProfilerHelper helper(env.local()); v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 1000, 0, true); CHECK_LE(200, profile->GetSamplesCount()); uint64_t end_time = profile->GetEndTime(); uint64_t current_time = profile->GetStartTime(); CHECK_LE(current_time, end_time); for (int i = 0; i < profile->GetSamplesCount(); i++) { CHECK(profile->GetSample(i)); uint64_t timestamp = profile->GetSampleTimestamp(i); CHECK_LE(current_time, timestamp); CHECK_LE(timestamp, end_time); current_time = timestamp; } profile->Delete(); } static const char* cpu_profiler_test_source2 = "%NeverOptimizeFunction(loop);\n" "%NeverOptimizeFunction(delay);\n" "%NeverOptimizeFunction(start);\n" "function loop() {}\n" "function delay() { loop(); }\n" "function start(duration) {\n" " var start = Date.now();\n" " do {\n" " for (var i = 0; i < 10000; ++i) delay();\n" " } while (Date.now() - start < duration);\n" "}"; // Check that the profile tree doesn't contain unexpected traces: // - 'loop' can be called only by 'delay' // - 'delay' may be called only by 'start' // The profile will look like the following: // // [Top down]: // 135 0 (root) [-1] #1 // 121 72 start [-1] #3 // 49 33 delay [-1] #4 // 16 16 loop [-1] #5 // 14 14 (program) [-1] #2 TEST(SampleWhenFrameIsNotSetup) { i::FLAG_allow_natives_syntax = true; LocalContext env; v8::HandleScope scope(env->GetIsolate()); CompileRun(cpu_profiler_test_source2); v8::Local function = GetFunction(env.local(), "start"); int32_t duration_ms = 100; v8::Local args[] = { v8::Integer::New(env->GetIsolate(), duration_ms)}; ProfilerHelper helper(env.local()); v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 1000); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start"); const v8::CpuProfileNode* delay_node = GetChild(env.local(), start_node, "delay"); GetChild(env.local(), delay_node, "loop"); profile->Delete(); } static const char* native_accessor_test_source = "function start(count) {\n" " for (var i = 0; i < count; i++) {\n" " var o = instance.foo;\n" " instance.foo = o + 1;\n" " }\n" "}\n"; class TestApiCallbacks { public: explicit TestApiCallbacks(int min_duration_ms) : min_duration_ms_(min_duration_ms), is_warming_up_(false) {} static void Getter(v8::Local name, const v8::PropertyCallbackInfo& info) { TestApiCallbacks* data = FromInfo(info); data->Wait(); } static void Setter(v8::Local name, v8::Local value, const v8::PropertyCallbackInfo& info) { TestApiCallbacks* data = FromInfo(info); data->Wait(); } static void Callback(const v8::FunctionCallbackInfo& info) { TestApiCallbacks* data = FromInfo(info); data->Wait(); } void set_warming_up(bool value) { is_warming_up_ = value; } private: void Wait() { if (is_warming_up_) return; double start = v8::base::OS::TimeCurrentMillis(); double duration = 0; while (duration < min_duration_ms_) { v8::base::OS::Sleep(v8::base::TimeDelta::FromMilliseconds(1)); duration = v8::base::OS::TimeCurrentMillis() - start; } } template static TestApiCallbacks* FromInfo(const T& info) { void* data = v8::External::Cast(*info.Data())->Value(); return reinterpret_cast(data); } int min_duration_ms_; bool is_warming_up_; }; // Test that native accessors are properly reported in the CPU profile. // This test checks the case when the long-running accessors are called // only once and the optimizer doesn't have chance to change the invocation // code. TEST(NativeAccessorUninitializedIC) { LocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Local func_template = v8::FunctionTemplate::New(isolate); v8::Local instance_template = func_template->InstanceTemplate(); TestApiCallbacks accessors(100); v8::Local data = v8::External::New(isolate, &accessors); instance_template->SetAccessor(v8_str("foo"), &TestApiCallbacks::Getter, &TestApiCallbacks::Setter, data); v8::Local func = func_template->GetFunction(env.local()).ToLocalChecked(); v8::Local instance = func->NewInstance(env.local()).ToLocalChecked(); env->Global()->Set(env.local(), v8_str("instance"), instance).FromJust(); CompileRun(native_accessor_test_source); v8::Local function = GetFunction(env.local(), "start"); ProfilerHelper helper(env.local()); int32_t repeat_count = 1; v8::Local args[] = {v8::Integer::New(isolate, repeat_count)}; v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 0, 100); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start"); GetChild(env.local(), start_node, "get foo"); GetChild(env.local(), start_node, "set foo"); profile->Delete(); } // Test that native accessors are properly reported in the CPU profile. // This test makes sure that the accessors are called enough times to become // hot and to trigger optimizations. TEST(NativeAccessorMonomorphicIC) { LocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Local func_template = v8::FunctionTemplate::New(isolate); v8::Local instance_template = func_template->InstanceTemplate(); TestApiCallbacks accessors(1); v8::Local data = v8::External::New(isolate, &accessors); instance_template->SetAccessor(v8_str("foo"), &TestApiCallbacks::Getter, &TestApiCallbacks::Setter, data); v8::Local func = func_template->GetFunction(env.local()).ToLocalChecked(); v8::Local instance = func->NewInstance(env.local()).ToLocalChecked(); env->Global()->Set(env.local(), v8_str("instance"), instance).FromJust(); CompileRun(native_accessor_test_source); v8::Local function = GetFunction(env.local(), "start"); { // Make sure accessors ICs are in monomorphic state before starting // profiling. accessors.set_warming_up(true); int32_t warm_up_iterations = 3; v8::Local args[] = { v8::Integer::New(isolate, warm_up_iterations)}; function->Call(env.local(), env->Global(), arraysize(args), args) .ToLocalChecked(); accessors.set_warming_up(false); } int32_t repeat_count = 100; v8::Local args[] = {v8::Integer::New(isolate, repeat_count)}; ProfilerHelper helper(env.local()); v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 0, 100); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start"); GetChild(env.local(), start_node, "get foo"); GetChild(env.local(), start_node, "set foo"); profile->Delete(); } static const char* native_method_test_source = "function start(count) {\n" " for (var i = 0; i < count; i++) {\n" " instance.fooMethod();\n" " }\n" "}\n"; TEST(NativeMethodUninitializedIC) { LocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); TestApiCallbacks callbacks(100); v8::Local data = v8::External::New(isolate, &callbacks); v8::Local func_template = v8::FunctionTemplate::New(isolate); func_template->SetClassName(v8_str("Test_InstanceConstructor")); v8::Local proto_template = func_template->PrototypeTemplate(); v8::Local signature = v8::Signature::New(isolate, func_template); proto_template->Set( v8_str("fooMethod"), v8::FunctionTemplate::New(isolate, &TestApiCallbacks::Callback, data, signature, 0)); v8::Local func = func_template->GetFunction(env.local()).ToLocalChecked(); v8::Local instance = func->NewInstance(env.local()).ToLocalChecked(); env->Global()->Set(env.local(), v8_str("instance"), instance).FromJust(); CompileRun(native_method_test_source); v8::Local function = GetFunction(env.local(), "start"); ProfilerHelper helper(env.local()); int32_t repeat_count = 1; v8::Local args[] = {v8::Integer::New(isolate, repeat_count)}; v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 0, 100); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start"); GetChild(env.local(), start_node, "fooMethod"); profile->Delete(); } TEST(NativeMethodMonomorphicIC) { LocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); TestApiCallbacks callbacks(1); v8::Local data = v8::External::New(isolate, &callbacks); v8::Local func_template = v8::FunctionTemplate::New(isolate); func_template->SetClassName(v8_str("Test_InstanceCostructor")); v8::Local proto_template = func_template->PrototypeTemplate(); v8::Local signature = v8::Signature::New(isolate, func_template); proto_template->Set( v8_str("fooMethod"), v8::FunctionTemplate::New(isolate, &TestApiCallbacks::Callback, data, signature, 0)); v8::Local func = func_template->GetFunction(env.local()).ToLocalChecked(); v8::Local instance = func->NewInstance(env.local()).ToLocalChecked(); env->Global()->Set(env.local(), v8_str("instance"), instance).FromJust(); CompileRun(native_method_test_source); v8::Local function = GetFunction(env.local(), "start"); { // Make sure method ICs are in monomorphic state before starting // profiling. callbacks.set_warming_up(true); int32_t warm_up_iterations = 3; v8::Local args[] = { v8::Integer::New(isolate, warm_up_iterations)}; function->Call(env.local(), env->Global(), arraysize(args), args) .ToLocalChecked(); callbacks.set_warming_up(false); } ProfilerHelper helper(env.local()); int32_t repeat_count = 100; v8::Local args[] = {v8::Integer::New(isolate, repeat_count)}; v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 0, 200); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); GetChild(env.local(), root, "start"); const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start"); GetChild(env.local(), start_node, "fooMethod"); profile->Delete(); } static const char* bound_function_test_source = "function foo() {\n" " startProfiling('my_profile');\n" "}\n" "function start() {\n" " var callback = foo.bind(this);\n" " callback();\n" "}"; TEST(BoundFunctionCall) { v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); CompileRun(bound_function_test_source); v8::Local function = GetFunction(env, "start"); ProfilerHelper helper(env); v8::CpuProfile* profile = helper.Run(function, nullptr, 0); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env, root, "start"); GetChild(env, start_node, "foo"); profile->Delete(); } // This tests checks distribution of the samples through the source lines. static void TickLines(bool optimize) { if (!optimize) i::FLAG_crankshaft = false; CcTest::InitializeVM(); LocalContext env; i::FLAG_allow_natives_syntax = true; i::Isolate* isolate = CcTest::i_isolate(); i::Factory* factory = isolate->factory(); i::HandleScope scope(isolate); i::EmbeddedVector script; i::EmbeddedVector optimize_call; const char* func_name = "func"; if (optimize) { i::SNPrintF(optimize_call, "%%OptimizeFunctionOnNextCall(%s);\n", func_name); } else { optimize_call[0] = '\0'; } i::SNPrintF(script, "function %s() {\n" " var n = 0;\n" " var m = 100*100;\n" " while (m > 1) {\n" " m--;\n" " n += m * m * m;\n" " }\n" "}\n" "%s();\n" "%s" "%s();\n", func_name, func_name, optimize_call.start(), func_name); CompileRun(script.start()); i::Handle func = i::Handle::cast( v8::Utils::OpenHandle(*GetFunction(env.local(), func_name))); CHECK(func->shared()); CHECK(func->shared()->abstract_code()); CHECK(!optimize || func->IsOptimized() || !CcTest::i_isolate()->use_crankshaft()); i::AbstractCode* code = func->abstract_code(); CHECK(code); i::Address code_address = code->instruction_start(); CHECK(code_address); CpuProfilesCollection* profiles = new CpuProfilesCollection(isolate); ProfileGenerator* generator = new ProfileGenerator(isolate, profiles); ProfilerEventsProcessor* processor = new ProfilerEventsProcessor(CcTest::i_isolate(), generator, v8::base::TimeDelta::FromMicroseconds(100)); CpuProfiler profiler(isolate, profiles, generator, processor); profiles->StartProfiling("", false); processor->Start(); ProfilerListener profiler_listener(isolate); isolate->code_event_dispatcher()->AddListener(&profiler_listener); profiler_listener.AddObserver(&profiler); // Enqueue code creation events. i::Handle str = factory->NewStringFromAsciiChecked(func_name); int line = 1; int column = 1; profiler_listener.CodeCreateEvent(i::Logger::FUNCTION_TAG, code, func->shared(), *str, line, column); // Enqueue a tick event to enable code events processing. EnqueueTickSampleEvent(processor, code_address); profiler_listener.RemoveObserver(&profiler); isolate->code_event_dispatcher()->RemoveListener(&profiler_listener); processor->StopSynchronously(); CpuProfile* profile = profiles->StopProfiling(""); CHECK(profile); // Check the state of profile generator. CodeEntry* func_entry = generator->code_map()->FindEntry(code_address); CHECK(func_entry); CHECK_EQ(0, strcmp(func_name, func_entry->name())); const i::JITLineInfoTable* line_info = func_entry->line_info(); CHECK(line_info); CHECK(!line_info->empty()); // Check the hit source lines using V8 Public APIs. const i::ProfileTree* tree = profile->top_down(); ProfileNode* root = tree->root(); CHECK(root); ProfileNode* func_node = root->FindChild(func_entry); CHECK(func_node); // Add 10 faked ticks to source line #5. int hit_line = 5; int hit_count = 10; for (int i = 0; i < hit_count; i++) func_node->IncrementLineTicks(hit_line); unsigned int line_count = func_node->GetHitLineCount(); CHECK_EQ(2u, line_count); // Expect two hit source lines - #1 and #5. ScopedVector entries(line_count); CHECK(func_node->GetLineTicks(&entries[0], line_count)); int value = 0; for (int i = 0; i < entries.length(); i++) if (entries[i].line == hit_line) { value = entries[i].hit_count; break; } CHECK_EQ(hit_count, value); } TEST(TickLinesBaseline) { TickLines(false); } TEST(TickLinesOptimized) { TickLines(true); } static const char* call_function_test_source = "%NeverOptimizeFunction(bar);\n" "%NeverOptimizeFunction(start);\n" "function bar(n) {\n" " var s = 0;\n" " for (var i = 0; i < n; i++) s += i * i * i;\n" " return s;\n" "}\n" "function start(duration) {\n" " var start = Date.now();\n" " do {\n" " for (var i = 0; i < 100; ++i)\n" " bar.call(this, 1000);\n" " } while (Date.now() - start < duration);\n" "}"; // Test that if we sampled thread when it was inside FunctionCall buitin then // its caller frame will be '(unresolved function)' as we have no reliable way // to resolve it. // // [Top down]: // 96 0 (root) [-1] #1 // 1 1 (garbage collector) [-1] #4 // 5 0 (unresolved function) [-1] #5 // 5 5 call [-1] #6 // 71 70 start [-1] #3 // 1 1 bar [-1] #7 // 19 19 (program) [-1] #2 TEST(FunctionCallSample) { i::FLAG_allow_natives_syntax = true; LocalContext env; v8::HandleScope scope(env->GetIsolate()); // Collect garbage that might have be generated while installing // extensions. CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask); CompileRun(call_function_test_source); v8::Local function = GetFunction(env.local(), "start"); ProfilerHelper helper(env.local()); int32_t duration_ms = 100; v8::Local args[] = { v8::Integer::New(env->GetIsolate(), duration_ms)}; v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 1000); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start"); GetChild(env.local(), start_node, "bar"); const v8::CpuProfileNode* unresolved_node = FindChild(env.local(), root, i::CodeEntry::kUnresolvedFunctionName); CHECK(!unresolved_node || GetChild(env.local(), unresolved_node, "call")); profile->Delete(); } static const char* function_apply_test_source = "%NeverOptimizeFunction(bar);\n" "%NeverOptimizeFunction(test);\n" "%NeverOptimizeFunction(start);\n" "function bar(n) {\n" " var s = 0;\n" " for (var i = 0; i < n; i++) s += i * i * i;\n" " return s;\n" "}\n" "function test() {\n" " bar.apply(this, [1000]);\n" "}\n" "function start(duration) {\n" " var start = Date.now();\n" " do {\n" " for (var i = 0; i < 100; ++i) test();\n" " } while (Date.now() - start < duration);\n" "}"; // [Top down]: // 94 0 (root) [-1] #0 1 // 2 2 (garbage collector) [-1] #0 7 // 82 49 start [-1] #16 3 // 1 0 (unresolved function) [-1] #0 8 // 1 1 apply [-1] #0 9 // 32 21 test [-1] #16 4 // 2 2 bar [-1] #16 6 // 10 10 (program) [-1] #0 2 TEST(FunctionApplySample) { i::FLAG_allow_natives_syntax = true; LocalContext env; v8::HandleScope scope(env->GetIsolate()); CompileRun(function_apply_test_source); v8::Local function = GetFunction(env.local(), "start"); ProfilerHelper helper(env.local()); int32_t duration_ms = 100; v8::Local args[] = { v8::Integer::New(env->GetIsolate(), duration_ms)}; v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 1000); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start"); const v8::CpuProfileNode* test_node = GetChild(env.local(), start_node, "test"); GetChild(env.local(), test_node, "bar"); const v8::CpuProfileNode* unresolved_node = FindChild(env.local(), start_node, CodeEntry::kUnresolvedFunctionName); CHECK(!unresolved_node || GetChild(env.local(), unresolved_node, "apply")); profile->Delete(); } static const char* cpu_profiler_deep_stack_test_source = "function foo(n) {\n" " if (n)\n" " foo(n - 1);\n" " else\n" " collectSample();\n" "}\n" "function start() {\n" " startProfiling('my_profile');\n" " foo(250);\n" "}\n"; // Check a deep stack // // [Top down]: // 0 (root) 0 #1 // 2 (program) 0 #2 // 0 start 21 #3 no reason // 0 foo 21 #4 no reason // 0 foo 21 #5 no reason // .... // 0 foo 21 #254 no reason TEST(CpuProfileDeepStack) { v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); ProfilerHelper helper(env); CompileRun(cpu_profiler_deep_stack_test_source); v8::Local function = GetFunction(env, "start"); v8::Local profile_name = v8_str("my_profile"); function->Call(env, env->Global(), 0, NULL).ToLocalChecked(); v8::CpuProfile* profile = helper.profiler()->StopProfiling(profile_name); CHECK(profile); // Dump collected profile to have a better diagnostic in case of failure. reinterpret_cast(profile)->Print(); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* node = GetChild(env, root, "start"); for (int i = 0; i <= 250; ++i) { node = GetChild(env, node, "foo"); } CHECK(!FindChild(env, node, "foo")); profile->Delete(); } static const char* js_native_js_test_source = "%NeverOptimizeFunction(foo);\n" "%NeverOptimizeFunction(bar);\n" "%NeverOptimizeFunction(start);\n" "function foo(n) {\n" " var s = 0;\n" " for (var i = 0; i < n; i++) s += i * i * i;\n" " return s;\n" "}\n" "function bar() {\n" " foo(1000);\n" "}\n" "function start() {\n" " CallJsFunction(bar);\n" "}"; static void CallJsFunction(const v8::FunctionCallbackInfo& info) { v8::Local function = info[0].As(); v8::Local argv[] = {info[1]}; function->Call(info.GetIsolate()->GetCurrentContext(), info.This(), arraysize(argv), argv) .ToLocalChecked(); } // [Top down]: // 58 0 (root) #0 1 // 2 2 (program) #0 2 // 56 1 start #16 3 // 55 0 CallJsFunction #0 4 // 55 1 bar #16 5 // 54 54 foo #16 6 TEST(JsNativeJsSample) { i::FLAG_allow_natives_syntax = true; v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); v8::Local func_template = v8::FunctionTemplate::New( env->GetIsolate(), CallJsFunction); v8::Local func = func_template->GetFunction(env).ToLocalChecked(); func->SetName(v8_str("CallJsFunction")); env->Global()->Set(env, v8_str("CallJsFunction"), func).FromJust(); CompileRun(js_native_js_test_source); v8::Local function = GetFunction(env, "start"); ProfilerHelper helper(env); v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 1000); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env, root, "start"); const v8::CpuProfileNode* native_node = GetChild(env, start_node, "CallJsFunction"); const v8::CpuProfileNode* bar_node = GetChild(env, native_node, "bar"); GetChild(env, bar_node, "foo"); profile->Delete(); } static const char* js_native_js_runtime_js_test_source = "%NeverOptimizeFunction(foo);\n" "%NeverOptimizeFunction(bar);\n" "%NeverOptimizeFunction(start);\n" "function foo(n) {\n" " var s = 0;\n" " for (var i = 0; i < n; i++) s += i * i * i;\n" " return s;\n" "}\n" "var bound = foo.bind(this);\n" "function bar() {\n" " bound(1000);\n" "}\n" "function start() {\n" " CallJsFunction(bar);\n" "}"; // [Top down]: // 57 0 (root) #0 1 // 55 1 start #16 3 // 54 0 CallJsFunction #0 4 // 54 3 bar #16 5 // 51 51 foo #16 6 // 2 2 (program) #0 2 TEST(JsNativeJsRuntimeJsSample) { i::FLAG_allow_natives_syntax = true; v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); v8::Local func_template = v8::FunctionTemplate::New( env->GetIsolate(), CallJsFunction); v8::Local func = func_template->GetFunction(env).ToLocalChecked(); func->SetName(v8_str("CallJsFunction")); env->Global()->Set(env, v8_str("CallJsFunction"), func).FromJust(); CompileRun(js_native_js_runtime_js_test_source); ProfilerHelper helper(env); v8::Local function = GetFunction(env, "start"); v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 1000); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env, root, "start"); const v8::CpuProfileNode* native_node = GetChild(env, start_node, "CallJsFunction"); const v8::CpuProfileNode* bar_node = GetChild(env, native_node, "bar"); GetChild(env, bar_node, "foo"); profile->Delete(); } static void CallJsFunction2(const v8::FunctionCallbackInfo& info) { v8::base::OS::Print("In CallJsFunction2\n"); CallJsFunction(info); } static const char* js_native1_js_native2_js_test_source = "%NeverOptimizeFunction(foo);\n" "%NeverOptimizeFunction(bar);\n" "%NeverOptimizeFunction(start);\n" "function foo() {\n" " var s = 0;\n" " for (var i = 0; i < 1000; i++) s += i * i * i;\n" " return s;\n" "}\n" "function bar() {\n" " CallJsFunction2(foo);\n" "}\n" "function start() {\n" " CallJsFunction1(bar);\n" "}"; // [Top down]: // 57 0 (root) #0 1 // 55 1 start #16 3 // 54 0 CallJsFunction1 #0 4 // 54 0 bar #16 5 // 54 0 CallJsFunction2 #0 6 // 54 54 foo #16 7 // 2 2 (program) #0 2 TEST(JsNative1JsNative2JsSample) { i::FLAG_allow_natives_syntax = true; v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); v8::Local func1 = v8::FunctionTemplate::New(env->GetIsolate(), CallJsFunction) ->GetFunction(env) .ToLocalChecked(); func1->SetName(v8_str("CallJsFunction1")); env->Global()->Set(env, v8_str("CallJsFunction1"), func1).FromJust(); v8::Local func2 = v8::FunctionTemplate::New(env->GetIsolate(), CallJsFunction2) ->GetFunction(env) .ToLocalChecked(); func2->SetName(v8_str("CallJsFunction2")); env->Global()->Set(env, v8_str("CallJsFunction2"), func2).FromJust(); CompileRun(js_native1_js_native2_js_test_source); ProfilerHelper helper(env); v8::Local function = GetFunction(env, "start"); v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 1000); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env, root, "start"); const v8::CpuProfileNode* native_node1 = GetChild(env, start_node, "CallJsFunction1"); const v8::CpuProfileNode* bar_node = GetChild(env, native_node1, "bar"); const v8::CpuProfileNode* native_node2 = GetChild(env, bar_node, "CallJsFunction2"); GetChild(env, native_node2, "foo"); profile->Delete(); } static const char* js_force_collect_sample_source = "function start() {\n" " CallCollectSample();\n" "}"; static void CallCollectSample(const v8::FunctionCallbackInfo& info) { i::ProfilerExtension::profiler()->CollectSample(); } TEST(CollectSampleAPI) { v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); v8::Local func_template = v8::FunctionTemplate::New(env->GetIsolate(), CallCollectSample); v8::Local func = func_template->GetFunction(env).ToLocalChecked(); func->SetName(v8_str("CallCollectSample")); env->Global()->Set(env, v8_str("CallCollectSample"), func).FromJust(); CompileRun(js_force_collect_sample_source); ProfilerHelper helper(env); v8::Local function = GetFunction(env, "start"); v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 0); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env, root, "start"); CHECK_LE(1, start_node->GetChildrenCount()); GetChild(env, start_node, "CallCollectSample"); profile->Delete(); } static const char* js_native_js_runtime_multiple_test_source = "%NeverOptimizeFunction(foo);\n" "%NeverOptimizeFunction(bar);\n" "%NeverOptimizeFunction(start);\n" "function foo() {\n" " return Math.sin(Math.random());\n" "}\n" "var bound = foo.bind(this);\n" "function bar() {\n" " return bound();\n" "}\n" "function start() {\n" " startProfiling('my_profile');\n" " var startTime = Date.now();\n" " do {\n" " CallJsFunction(bar);\n" " } while (Date.now() - startTime < 200);\n" "}"; // The test check multiple entrances/exits between JS and native code. // // [Top down]: // (root) #0 1 // start #16 3 // CallJsFunction #0 4 // bar #16 5 // foo #16 6 // (program) #0 2 TEST(JsNativeJsRuntimeJsSampleMultiple) { i::FLAG_allow_natives_syntax = true; v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); v8::Local func_template = v8::FunctionTemplate::New(env->GetIsolate(), CallJsFunction); v8::Local func = func_template->GetFunction(env).ToLocalChecked(); func->SetName(v8_str("CallJsFunction")); env->Global()->Set(env, v8_str("CallJsFunction"), func).FromJust(); CompileRun(js_native_js_runtime_multiple_test_source); ProfilerHelper helper(env); v8::Local function = GetFunction(env, "start"); v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 500, 500); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env, root, "start"); const v8::CpuProfileNode* native_node = GetChild(env, start_node, "CallJsFunction"); const v8::CpuProfileNode* bar_node = GetChild(env, native_node, "bar"); GetChild(env, bar_node, "foo"); profile->Delete(); } static const char* inlining_test_source = "%NeverOptimizeFunction(action);\n" "%NeverOptimizeFunction(start);\n" "%OptimizeFunctionOnNextCall(level1);\n" "%OptimizeFunctionOnNextCall(level2);\n" "%OptimizeFunctionOnNextCall(level3);\n" "var finish = false;\n" "function action(n) {\n" " var s = 0;\n" " for (var i = 0; i < n; ++i) s += i*i*i;\n" " if (finish)\n" " startProfiling('my_profile');\n" " return s;\n" "}\n" "function level3() { return action(100); }\n" "function level2() { return level3() * 2; }\n" "function level1() { return level2(); }\n" "function start() {\n" " var n = 100;\n" " while (--n)\n" " level1();\n" " finish = true;\n" " level1();\n" "}"; // The test check multiple entrances/exits between JS and native code. // // [Top down]: // (root) #0 1 // start #16 3 // level1 #0 4 // level2 #16 5 // level3 #16 6 // action #16 7 // (program) #0 2 TEST(Inlining) { i::FLAG_allow_natives_syntax = true; v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); ProfilerHelper helper(env); CompileRun(inlining_test_source); v8::Local function = GetFunction(env, "start"); v8::Local profile_name = v8_str("my_profile"); function->Call(env, env->Global(), 0, NULL).ToLocalChecked(); v8::CpuProfile* profile = helper.profiler()->StopProfiling(profile_name); CHECK(profile); // Dump collected profile to have a better diagnostic in case of failure. reinterpret_cast(profile)->Print(); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* start_node = GetChild(env, root, "start"); const v8::CpuProfileNode* level1_node = GetChild(env, start_node, "level1"); const v8::CpuProfileNode* level2_node = GetChild(env, level1_node, "level2"); const v8::CpuProfileNode* level3_node = GetChild(env, level2_node, "level3"); GetChild(env, level3_node, "action"); profile->Delete(); } // [Top down]: // 0 (root) #0 1 // 2 (program) #0 2 // 3 (idle) #0 3 TEST(IdleTime) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::CpuProfiler* cpu_profiler = v8::CpuProfiler::New(env->GetIsolate()); v8::Local profile_name = v8_str("my_profile"); cpu_profiler->StartProfiling(profile_name); i::Isolate* isolate = CcTest::i_isolate(); i::ProfilerEventsProcessor* processor = reinterpret_cast(cpu_profiler)->processor(); processor->AddCurrentStack(isolate, true); cpu_profiler->SetIdle(true); for (int i = 0; i < 3; i++) { processor->AddCurrentStack(isolate, true); } cpu_profiler->SetIdle(false); processor->AddCurrentStack(isolate, true); v8::CpuProfile* profile = cpu_profiler->StopProfiling(profile_name); CHECK(profile); // Dump collected profile to have a better diagnostic in case of failure. reinterpret_cast(profile)->Print(); const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* program_node = GetChild(env.local(), root, CodeEntry::kProgramEntryName); CHECK_EQ(0, program_node->GetChildrenCount()); CHECK_GE(program_node->GetHitCount(), 2u); const v8::CpuProfileNode* idle_node = GetChild(env.local(), root, CodeEntry::kIdleEntryName); CHECK_EQ(0, idle_node->GetChildrenCount()); CHECK_GE(idle_node->GetHitCount(), 3u); profile->Delete(); cpu_profiler->Dispose(); } static void CheckFunctionDetails(v8::Isolate* isolate, const v8::CpuProfileNode* node, const char* name, const char* script_name, int script_id, int line, int column) { v8::Local context = isolate->GetCurrentContext(); CHECK(v8_str(name)->Equals(context, node->GetFunctionName()).FromJust()); CHECK_EQ(0, strcmp(name, node->GetFunctionNameStr())); CHECK(v8_str(script_name) ->Equals(context, node->GetScriptResourceName()) .FromJust()); CHECK_EQ(0, strcmp(script_name, node->GetScriptResourceNameStr())); CHECK_EQ(script_id, node->GetScriptId()); CHECK_EQ(line, node->GetLineNumber()); CHECK_EQ(column, node->GetColumnNumber()); } TEST(FunctionDetails) { i::FLAG_allow_natives_syntax = true; v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); ProfilerHelper helper(env); v8::Local script_a = CompileWithOrigin( "%NeverOptimizeFunction(foo);\n" "%NeverOptimizeFunction(bar);\n" " function foo\n() { bar(); }\n" " function bar() { startProfiling(); }\n", "script_a"); script_a->Run(env).ToLocalChecked(); v8::Local script_b = CompileWithOrigin( "%NeverOptimizeFunction(baz);" "\n\n function baz() { foo(); }\n" "\n\nbaz();\n" "stopProfiling();\n", "script_b"); script_b->Run(env).ToLocalChecked(); const v8::CpuProfile* profile = i::ProfilerExtension::last_profile; const v8::CpuProfileNode* current = profile->GetTopDownRoot(); reinterpret_cast( const_cast(current))->Print(0); // The tree should look like this: // 0 (root) 0 #1 // 0 "" 19 #2 no reason script_b:1 // 0 baz 19 #3 TryCatchStatement script_b:3 // 0 foo 18 #4 TryCatchStatement script_a:2 // 1 bar 18 #5 no reason script_a:3 const v8::CpuProfileNode* root = profile->GetTopDownRoot(); const v8::CpuProfileNode* script = GetChild(env, root, ""); CheckFunctionDetails(env->GetIsolate(), script, "", "script_b", script_b->GetUnboundScript()->GetId(), 1, 1); const v8::CpuProfileNode* baz = GetChild(env, script, "baz"); CheckFunctionDetails(env->GetIsolate(), baz, "baz", "script_b", script_b->GetUnboundScript()->GetId(), 3, 16); const v8::CpuProfileNode* foo = GetChild(env, baz, "foo"); CheckFunctionDetails(env->GetIsolate(), foo, "foo", "script_a", script_a->GetUnboundScript()->GetId(), 4, 1); const v8::CpuProfileNode* bar = GetChild(env, foo, "bar"); CheckFunctionDetails(env->GetIsolate(), bar, "bar", "script_a", script_a->GetUnboundScript()->GetId(), 5, 14); } TEST(DontStopOnFinishedProfileDelete) { v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); v8::CpuProfiler* profiler = v8::CpuProfiler::New(env->GetIsolate()); i::CpuProfiler* iprofiler = reinterpret_cast(profiler); CHECK_EQ(0, iprofiler->GetProfilesCount()); v8::Local outer = v8_str("outer"); profiler->StartProfiling(outer); CHECK_EQ(0, iprofiler->GetProfilesCount()); v8::Local inner = v8_str("inner"); profiler->StartProfiling(inner); CHECK_EQ(0, iprofiler->GetProfilesCount()); v8::CpuProfile* inner_profile = profiler->StopProfiling(inner); CHECK(inner_profile); CHECK_EQ(1, iprofiler->GetProfilesCount()); inner_profile->Delete(); inner_profile = NULL; CHECK_EQ(0, iprofiler->GetProfilesCount()); v8::CpuProfile* outer_profile = profiler->StopProfiling(outer); CHECK(outer_profile); CHECK_EQ(1, iprofiler->GetProfilesCount()); outer_profile->Delete(); outer_profile = NULL; CHECK_EQ(0, iprofiler->GetProfilesCount()); profiler->Dispose(); } const char* GetBranchDeoptReason(v8::Local context, i::CpuProfile* iprofile, const char* branch[], int length) { v8::CpuProfile* profile = reinterpret_cast(iprofile); const ProfileNode* iopt_function = NULL; iopt_function = GetSimpleBranch(context, profile, branch, length); CHECK_EQ(1U, iopt_function->deopt_infos().size()); return iopt_function->deopt_infos()[0].deopt_reason; } // deopt at top function TEST(CollectDeoptEvents) { if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return; i::FLAG_allow_natives_syntax = true; v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); ProfilerHelper helper(env); i::CpuProfiler* iprofiler = reinterpret_cast(helper.profiler()); const char opt_source[] = "function opt_function%d(value, depth) {\n" " if (depth) return opt_function%d(value, depth - 1);\n" "\n" " return 10 / value;\n" "}\n" "\n"; for (int i = 0; i < 3; ++i) { i::EmbeddedVector buffer; i::SNPrintF(buffer, opt_source, i, i); v8::Script::Compile(env, v8_str(buffer.start())) .ToLocalChecked() ->Run(env) .ToLocalChecked(); } const char* source = "startProfiling();\n" "\n" "opt_function0(1, 1);\n" "\n" "%OptimizeFunctionOnNextCall(opt_function0)\n" "\n" "opt_function0(1, 1);\n" "\n" "opt_function0(undefined, 1);\n" "\n" "opt_function1(1, 1);\n" "\n" "%OptimizeFunctionOnNextCall(opt_function1)\n" "\n" "opt_function1(1, 1);\n" "\n" "opt_function1(NaN, 1);\n" "\n" "opt_function2(1, 1);\n" "\n" "%OptimizeFunctionOnNextCall(opt_function2)\n" "\n" "opt_function2(1, 1);\n" "\n" "opt_function2(0, 1);\n" "\n" "stopProfiling();\n" "\n"; v8::Script::Compile(env, v8_str(source)) .ToLocalChecked() ->Run(env) .ToLocalChecked(); i::CpuProfile* iprofile = iprofiler->GetProfile(0); iprofile->Print(); /* The expected profile [Top down]: 0 (root) 0 #1 23 32 #2 1 opt_function2 31 #7 1 opt_function2 31 #8 ;;; deopted at script_id: 31 position: 106 with reason 'division by zero'. 2 opt_function0 29 #3 4 opt_function0 29 #4 ;;; deopted at script_id: 29 position: 108 with reason 'not a heap number'. 0 opt_function1 30 #5 1 opt_function1 30 #6 ;;; deopted at script_id: 30 position: 108 with reason 'lost precision or NaN'. */ { const char* branch[] = {"", "opt_function0", "opt_function0"}; CHECK_EQ(reason(i::DeoptimizeReason::kNotAHeapNumber), GetBranchDeoptReason(env, iprofile, branch, arraysize(branch))); } { const char* branch[] = {"", "opt_function1", "opt_function1"}; const char* deopt_reason = GetBranchDeoptReason(env, iprofile, branch, arraysize(branch)); if (deopt_reason != reason(i::DeoptimizeReason::kNaN) && deopt_reason != reason(i::DeoptimizeReason::kLostPrecisionOrNaN)) { FATAL(deopt_reason); } } { const char* branch[] = {"", "opt_function2", "opt_function2"}; CHECK_EQ(reason(i::DeoptimizeReason::kDivisionByZero), GetBranchDeoptReason(env, iprofile, branch, arraysize(branch))); } iprofiler->DeleteProfile(iprofile); } TEST(SourceLocation) { i::FLAG_always_opt = true; i::FLAG_hydrogen_track_positions = true; LocalContext env; v8::HandleScope scope(CcTest::isolate()); const char* source = "function CompareStatementWithThis() {\n" " if (this === 1) {}\n" "}\n" "CompareStatementWithThis();\n"; v8::Script::Compile(env.local(), v8_str(source)) .ToLocalChecked() ->Run(env.local()) .ToLocalChecked(); } static const char* inlined_source = "function opt_function(left, right) { var k = left / 10; var r = 10 / " "right; return k + r; }\n"; // 0.........1.........2.........3.........4....*....5.........6......*..7 // deopt at the first level inlined function TEST(DeoptAtFirstLevelInlinedSource) { if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return; i::FLAG_allow_natives_syntax = true; v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); ProfilerHelper helper(env); i::CpuProfiler* iprofiler = reinterpret_cast(helper.profiler()); // 0.........1.........2.........3.........4.........5.........6.........7 const char* source = "function test(left, right) { return opt_function(left, right); }\n" "\n" "startProfiling();\n" "\n" "test(10, 10);\n" "\n" "%OptimizeFunctionOnNextCall(test)\n" "\n" "test(10, 10);\n" "\n" "test(undefined, 10);\n" "\n" "stopProfiling();\n" "\n"; v8::Local inlined_script = v8_compile(inlined_source); inlined_script->Run(env).ToLocalChecked(); int inlined_script_id = inlined_script->GetUnboundScript()->GetId(); v8::Local script = v8_compile(source); script->Run(env).ToLocalChecked(); int script_id = script->GetUnboundScript()->GetId(); i::CpuProfile* iprofile = iprofiler->GetProfile(0); iprofile->Print(); /* The expected profile output [Top down]: 0 (root) 0 #1 10 30 #2 1 test 30 #3 ;;; deopted at script_id: 29 position: 45 with reason 'not a heap number'. ;;; Inline point: script_id 30 position: 36. 4 opt_function 29 #4 */ v8::CpuProfile* profile = reinterpret_cast(iprofile); const char* branch[] = {"", "test"}; const ProfileNode* itest_node = GetSimpleBranch(env, profile, branch, arraysize(branch)); const std::vector& deopt_infos = itest_node->deopt_infos(); CHECK_EQ(1U, deopt_infos.size()); const v8::CpuProfileDeoptInfo& info = deopt_infos[0]; CHECK_EQ(reason(i::DeoptimizeReason::kNotAHeapNumber), info.deopt_reason); CHECK_EQ(2U, info.stack.size()); CHECK_EQ(inlined_script_id, info.stack[0].script_id); CHECK_EQ(offset(inlined_source, "left /"), info.stack[0].position); CHECK_EQ(script_id, info.stack[1].script_id); CHECK_EQ(offset(source, "opt_function(left,"), info.stack[1].position); iprofiler->DeleteProfile(iprofile); } // deopt at the second level inlined function TEST(DeoptAtSecondLevelInlinedSource) { if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return; i::FLAG_allow_natives_syntax = true; v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); ProfilerHelper helper(env); i::CpuProfiler* iprofiler = reinterpret_cast(helper.profiler()); // 0.........1.........2.........3.........4.........5.........6.........7 const char* source = "function test2(left, right) { return opt_function(left, right); }\n" "function test1(left, right) { return test2(left, right); }\n" "\n" "startProfiling();\n" "\n" "test1(10, 10);\n" "\n" "%OptimizeFunctionOnNextCall(test1)\n" "\n" "test1(10, 10);\n" "\n" "test1(undefined, 10);\n" "\n" "stopProfiling();\n" "\n"; v8::Local inlined_script = v8_compile(inlined_source); inlined_script->Run(env).ToLocalChecked(); int inlined_script_id = inlined_script->GetUnboundScript()->GetId(); v8::Local script = v8_compile(source); script->Run(env).ToLocalChecked(); int script_id = script->GetUnboundScript()->GetId(); i::CpuProfile* iprofile = iprofiler->GetProfile(0); iprofile->Print(); /* The expected profile output [Top down]: 0 (root) 0 #1 11 30 #2 1 test1 30 #3 ;;; deopted at script_id: 29 position: 45 with reason 'not a heap number'. ;;; Inline point: script_id 30 position: 37. ;;; Inline point: script_id 30 position: 103. 1 test2 30 #4 3 opt_function 29 #5 */ v8::CpuProfile* profile = reinterpret_cast(iprofile); const char* branch[] = {"", "test1"}; const ProfileNode* itest_node = GetSimpleBranch(env, profile, branch, arraysize(branch)); const std::vector& deopt_infos = itest_node->deopt_infos(); CHECK_EQ(1U, deopt_infos.size()); const v8::CpuProfileDeoptInfo info = deopt_infos[0]; CHECK_EQ(reason(i::DeoptimizeReason::kNotAHeapNumber), info.deopt_reason); CHECK_EQ(3U, info.stack.size()); CHECK_EQ(inlined_script_id, info.stack[0].script_id); CHECK_EQ(offset(inlined_source, "left /"), info.stack[0].position); CHECK_EQ(script_id, info.stack[1].script_id); CHECK_EQ(offset(source, "opt_function(left,"), info.stack[1].position); CHECK_EQ(offset(source, "test2(left, right);"), info.stack[2].position); iprofiler->DeleteProfile(iprofile); } // deopt in untracked function TEST(DeoptUntrackedFunction) { if (!CcTest::i_isolate()->use_crankshaft() || i::FLAG_always_opt) return; i::FLAG_allow_natives_syntax = true; v8::HandleScope scope(CcTest::isolate()); v8::Local env = CcTest::NewContext(PROFILER_EXTENSION); v8::Context::Scope context_scope(env); ProfilerHelper helper(env); i::CpuProfiler* iprofiler = reinterpret_cast(helper.profiler()); // 0.........1.........2.........3.........4.........5.........6.........7 const char* source = "function test(left, right) { return opt_function(left, right); }\n" "\n" "test(10, 10);\n" "\n" "%OptimizeFunctionOnNextCall(test)\n" "\n" "test(10, 10);\n" "\n" "startProfiling();\n" // profiler started after compilation. "\n" "test(undefined, 10);\n" "\n" "stopProfiling();\n" "\n"; v8::Local inlined_script = v8_compile(inlined_source); inlined_script->Run(env).ToLocalChecked(); v8::Local script = v8_compile(source); script->Run(env).ToLocalChecked(); i::CpuProfile* iprofile = iprofiler->GetProfile(0); iprofile->Print(); v8::CpuProfile* profile = reinterpret_cast(iprofile); const char* branch[] = {"", "test"}; const ProfileNode* itest_node = GetSimpleBranch(env, profile, branch, arraysize(branch)); CHECK_EQ(0U, itest_node->deopt_infos().size()); iprofiler->DeleteProfile(iprofile); } using v8::platform::tracing::TraceBuffer; using v8::platform::tracing::TraceConfig; using v8::platform::tracing::TraceObject; namespace { class CpuProfileEventChecker : public v8::platform::tracing::TraceWriter { public: void AppendTraceEvent(TraceObject* trace_event) override { if (trace_event->name() != std::string("Profile") && trace_event->name() != std::string("ProfileChunk")) return; CHECK(!profile_id_ || trace_event->id() == profile_id_); CHECK_EQ(1, trace_event->num_args()); CHECK_EQ(TRACE_VALUE_TYPE_CONVERTABLE, trace_event->arg_types()[0]); profile_id_ = trace_event->id(); v8::ConvertableToTraceFormat* arg = trace_event->arg_convertables()[0].get(); arg->AppendAsTraceFormat(&result_json_); } void Flush() override {} std::string result_json() const { return result_json_; } private: std::string result_json_; uint64_t profile_id_ = 0; }; } // namespace TEST(TracingCpuProfiler) { v8::Platform* old_platform = i::V8::GetCurrentPlatform(); v8::Platform* default_platform = v8::platform::CreateDefaultPlatform(); i::V8::SetPlatformForTesting(default_platform); v8::platform::tracing::TracingController tracing_controller; v8::platform::SetTracingController(default_platform, &tracing_controller); CpuProfileEventChecker* event_checker = new CpuProfileEventChecker(); TraceBuffer* ring_buffer = TraceBuffer::CreateTraceBufferRingBuffer(1, event_checker); tracing_controller.Initialize(ring_buffer); TraceConfig* trace_config = new TraceConfig(); trace_config->AddIncludedCategory( TRACE_DISABLED_BY_DEFAULT("v8.cpu_profiler")); LocalContext env; v8::HandleScope scope(env->GetIsolate()); { tracing_controller.StartTracing(trace_config); auto profiler = v8::TracingCpuProfiler::Create(env->GetIsolate()); CompileRun("function foo() { } foo();"); tracing_controller.StopTracing(); CompileRun("function bar() { } bar();"); } const char* profile_checker = "function checkProfile(profile) {\n" " if (typeof profile['startTime'] !== 'number') return 'startTime';\n" " return '';\n" "}\n" "checkProfile("; std::string profile_json = event_checker->result_json(); CHECK_LT(0u, profile_json.length()); printf("Profile JSON: %s\n", profile_json.c_str()); std::string code = profile_checker + profile_json + ")"; v8::Local result = CompileRunChecked(CcTest::isolate(), code.c_str()); v8::String::Utf8Value value(result); printf("Check result: %*s\n", value.length(), *value); CHECK_EQ(0, value.length()); i::V8::SetPlatformForTesting(old_platform); }