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- // Copyright 2015 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "gin/v8_isolate_memory_dump_provider.h"
- #include <memory>
- #include "base/task/thread_pool/thread_pool_instance.h"
- #include "base/threading/thread_task_runner_handle.h"
- #include "base/trace_event/process_memory_dump.h"
- #include "base/trace_event/trace_event.h"
- #include "build/build_config.h"
- #include "gin/public/isolate_holder.h"
- #include "gin/test/v8_test.h"
- #include "v8/include/v8-initialization.h"
- namespace gin {
- class V8MemoryDumpProviderTest : public V8Test {
- void SetUp() override {
- // Sets the track objects flag for dumping object statistics. Set this
- // before initializing V8, because flags should not be modified after
- // initialization. Also, setting the flag as early as possible ensures more
- // precise numbers.
- v8::V8::SetFlagsFromString("--track-gc-object-stats");
- V8Test::SetUp();
- }
- };
- class V8MemoryDumpProviderWorkerTest : public V8MemoryDumpProviderTest {
- protected:
- std::unique_ptr<IsolateHolder> CreateIsolateHolder() const override {
- return std::make_unique<gin::IsolateHolder>(
- base::ThreadTaskRunnerHandle::Get(),
- gin::IsolateHolder::IsolateType::kBlinkWorkerThread);
- }
- };
- // Checks if the dump provider runs without crashing and dumps root objects.
- TEST_F(V8MemoryDumpProviderTest, DumpStatistics) {
- base::trace_event::MemoryDumpArgs dump_args = {
- base::trace_event::MemoryDumpLevelOfDetail::DETAILED};
- std::unique_ptr<base::trace_event::ProcessMemoryDump> process_memory_dump(
- new base::trace_event::ProcessMemoryDump(dump_args));
- instance_->isolate_memory_dump_provider_for_testing()->OnMemoryDump(
- dump_args, process_memory_dump.get());
- const base::trace_event::ProcessMemoryDump::AllocatorDumpsMap&
- allocator_dumps = process_memory_dump->allocator_dumps();
- bool did_dump_isolate_stats = false;
- bool did_dump_space_stats = false;
- bool did_dump_objects_stats = false;
- for (const auto& name_dump : allocator_dumps) {
- const std::string& name = name_dump.first;
- if (name.find("v8/main") != std::string::npos) {
- did_dump_isolate_stats = true;
- }
- if (name.find("v8/main/heap") != std::string::npos) {
- did_dump_space_stats = true;
- }
- if (name.find("v8/main/heap_objects") != std::string::npos) {
- did_dump_objects_stats = true;
- }
- }
- ASSERT_TRUE(did_dump_isolate_stats);
- ASSERT_TRUE(did_dump_space_stats);
- ASSERT_TRUE(did_dump_objects_stats);
- }
- TEST_F(V8MemoryDumpProviderTest, DumpGlobalHandlesSize) {
- base::trace_event::MemoryDumpArgs dump_args = {
- base::trace_event::MemoryDumpLevelOfDetail::BACKGROUND};
- std::unique_ptr<base::trace_event::ProcessMemoryDump> process_memory_dump(
- new base::trace_event::ProcessMemoryDump(dump_args));
- instance_->isolate_memory_dump_provider_for_testing()->OnMemoryDump(
- dump_args, process_memory_dump.get());
- const base::trace_event::ProcessMemoryDump::AllocatorDumpsMap&
- allocator_dumps = process_memory_dump->allocator_dumps();
- bool did_dump_global_handles = false;
- for (const auto& name_dump : allocator_dumps) {
- const std::string& name = name_dump.first;
- if (name.find("v8/main/global_handles") != std::string::npos) {
- did_dump_global_handles = true;
- }
- }
- ASSERT_TRUE(did_dump_global_handles);
- }
- TEST_F(V8MemoryDumpProviderTest, DumpContextStatistics) {
- base::trace_event::MemoryDumpArgs dump_args = {
- base::trace_event::MemoryDumpLevelOfDetail::LIGHT};
- std::unique_ptr<base::trace_event::ProcessMemoryDump> process_memory_dump(
- new base::trace_event::ProcessMemoryDump(dump_args));
- instance_->isolate_memory_dump_provider_for_testing()->OnMemoryDump(
- dump_args, process_memory_dump.get());
- const base::trace_event::ProcessMemoryDump::AllocatorDumpsMap&
- allocator_dumps = process_memory_dump->allocator_dumps();
- bool did_dump_detached_contexts = false;
- bool did_dump_native_contexts = false;
- for (const auto& name_dump : allocator_dumps) {
- const std::string& name = name_dump.first;
- if (name.find("main/contexts/detached_context") != std::string::npos) {
- did_dump_detached_contexts = true;
- }
- if (name.find("main/contexts/native_context") != std::string::npos) {
- did_dump_native_contexts = true;
- }
- }
- ASSERT_TRUE(did_dump_detached_contexts);
- ASSERT_TRUE(did_dump_native_contexts);
- }
- TEST_F(V8MemoryDumpProviderWorkerTest, DumpContextStatistics) {
- base::trace_event::MemoryDumpArgs dump_args = {
- base::trace_event::MemoryDumpLevelOfDetail::LIGHT};
- std::unique_ptr<base::trace_event::ProcessMemoryDump> process_memory_dump(
- new base::trace_event::ProcessMemoryDump(dump_args));
- instance_->isolate_memory_dump_provider_for_testing()->OnMemoryDump(
- dump_args, process_memory_dump.get());
- const base::trace_event::ProcessMemoryDump::AllocatorDumpsMap&
- allocator_dumps = process_memory_dump->allocator_dumps();
- bool did_dump_detached_contexts = false;
- bool did_dump_native_contexts = false;
- for (const auto& name_dump : allocator_dumps) {
- const std::string& name = name_dump.first;
- if (name.find("workers/contexts/detached_context/isolate_0x") !=
- std::string::npos) {
- did_dump_detached_contexts = true;
- }
- if (name.find("workers/contexts/native_context/isolate_0x") !=
- std::string::npos) {
- did_dump_native_contexts = true;
- }
- }
- ASSERT_TRUE(did_dump_detached_contexts);
- ASSERT_TRUE(did_dump_native_contexts);
- }
- TEST_F(V8MemoryDumpProviderTest, DumpCodeStatistics) {
- // Code stats are disabled unless this category is enabled.
- base::trace_event::TraceLog::GetInstance()->SetEnabled(
- base::trace_event::TraceConfig(
- TRACE_DISABLED_BY_DEFAULT("memory-infra.v8.code_stats"), ""),
- base::trace_event::TraceLog::RECORDING_MODE);
- base::trace_event::MemoryDumpArgs dump_args = {
- base::trace_event::MemoryDumpLevelOfDetail::LIGHT};
- std::unique_ptr<base::trace_event::ProcessMemoryDump> process_memory_dump(
- new base::trace_event::ProcessMemoryDump(dump_args));
- instance_->isolate_memory_dump_provider_for_testing()->OnMemoryDump(
- dump_args, process_memory_dump.get());
- const base::trace_event::ProcessMemoryDump::AllocatorDumpsMap&
- allocator_dumps = process_memory_dump->allocator_dumps();
- bool did_dump_bytecode_size = false;
- bool did_dump_code_size = false;
- bool did_dump_external_scripts_size = false;
- bool did_dump_cpu_profiler_metadata_size = false;
- for (const auto& name_dump : allocator_dumps) {
- const std::string& name = name_dump.first;
- if (name.find("code_stats") != std::string::npos) {
- for (const base::trace_event::MemoryAllocatorDump::Entry& entry :
- name_dump.second->entries()) {
- if (entry.name == "bytecode_and_metadata_size") {
- did_dump_bytecode_size = true;
- } else if (entry.name == "code_and_metadata_size") {
- did_dump_code_size = true;
- } else if (entry.name == "external_script_source_size") {
- did_dump_external_scripts_size = true;
- } else if (entry.name == "cpu_profiler_metadata_size") {
- did_dump_cpu_profiler_metadata_size = true;
- }
- }
- }
- }
- base::trace_event::TraceLog::GetInstance()->SetDisabled();
- ASSERT_TRUE(did_dump_bytecode_size);
- ASSERT_TRUE(did_dump_code_size);
- ASSERT_TRUE(did_dump_external_scripts_size);
- ASSERT_TRUE(did_dump_cpu_profiler_metadata_size);
- }
- // Tests that a deterministic memory dump request performs a GC.
- // TODO(crbug.com/1318974): Fix the flakiness on Linux.
- // TODO(crbug.com/1342599): Fix the falkiness on linux-chromeos-dbg.
- #if BUILDFLAG(IS_LINUX) || (BUILDFLAG(IS_CHROMEOS) && !defined(NDEBUG))
- #define MAYBE_Deterministic DISABLED_Deterministic
- #else
- #define MAYBE_Deterministic Deterministic
- #endif
- TEST_F(V8MemoryDumpProviderTest, MAYBE_Deterministic) {
- base::trace_event::MemoryDumpArgs dump_args = {
- base::trace_event::MemoryDumpLevelOfDetail::LIGHT,
- base::trace_event::MemoryDumpDeterminism::FORCE_GC};
- std::unique_ptr<base::trace_event::ProcessMemoryDump> process_memory_dump(
- new base::trace_event::ProcessMemoryDump(dump_args));
- // Allocate an object that has only a weak reference.
- v8::Global<v8::Object> weak_ref;
- {
- v8::HandleScope scope(instance_->isolate());
- v8::Local<v8::Object> object = v8::Object::New(instance_->isolate());
- weak_ref.Reset(instance_->isolate(), object);
- weak_ref.SetWeak();
- }
- // Deterministic memory dump should trigger GC.
- instance_->isolate_memory_dump_provider_for_testing()->OnMemoryDump(
- dump_args, process_memory_dump.get());
- // GC reclaimed the object.
- ASSERT_TRUE(weak_ref.IsEmpty());
- }
- } // namespace gin
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