| // Copyright (c) 2014 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 "content/renderer/devtools/v8_sampling_profiler.h" |
| |
| #include <stddef.h> |
| |
| #include <utility> |
| |
| #include "base/json/json_reader.h" |
| #include "base/memory/ref_counted_memory.h" |
| #include "base/run_loop.h" |
| #include "base/trace_event/trace_buffer.h" |
| #include "base/trace_event/trace_event.h" |
| #include "content/public/test/render_view_test.h" |
| |
| using base::DictionaryValue; |
| using base::ListValue; |
| using base::Value; |
| using base::trace_event::TraceConfig; |
| using base::trace_event::TraceLog; |
| using base::trace_event::TraceResultBuffer; |
| |
| namespace content { |
| |
| class V8SamplingProfilerTest : public RenderViewTest { |
| public: |
| void SetUp() override { |
| RenderViewTest::SetUp(); |
| sampling_profiler_.reset(new V8SamplingProfiler(true)); |
| trace_buffer_.SetOutputCallback(json_output_.GetCallback()); |
| } |
| |
| void TearDown() override { |
| sampling_profiler_.reset(); |
| RenderViewTest::TearDown(); |
| } |
| |
| void KickV8() { ExecuteJavaScriptForTests("1"); } |
| |
| void SyncFlush(TraceLog* trace_log) { |
| base::WaitableEvent flush_complete_event( |
| base::WaitableEvent::ResetPolicy::AUTOMATIC, |
| base::WaitableEvent::InitialState::NOT_SIGNALED); |
| trace_log->Flush( |
| base::Bind(&V8SamplingProfilerTest::OnTraceDataCollected, |
| base::Unretained(static_cast<V8SamplingProfilerTest*>(this)), |
| base::Unretained(&flush_complete_event))); |
| base::RunLoop().RunUntilIdle(); |
| flush_complete_event.Wait(); |
| } |
| |
| void OnTraceDataCollected( |
| base::WaitableEvent* flush_complete_event, |
| const scoped_refptr<base::RefCountedString>& events_str, |
| bool has_more_events) { |
| base::AutoLock lock(lock_); |
| json_output_.json_output.clear(); |
| trace_buffer_.Start(); |
| trace_buffer_.AddFragment(events_str->data()); |
| trace_buffer_.Finish(); |
| |
| std::unique_ptr<Value> root; |
| root = base::JSONReader::Read( |
| json_output_.json_output, |
| base::JSON_PARSE_RFC | base::JSON_DETACHABLE_CHILDREN); |
| |
| if (!root.get()) { |
| LOG(ERROR) << json_output_.json_output; |
| } |
| |
| ListValue* root_list = NULL; |
| ASSERT_TRUE(root.get()); |
| ASSERT_TRUE(root->GetAsList(&root_list)); |
| |
| // Move items into our aggregate collection |
| while (root_list->GetSize()) { |
| std::unique_ptr<Value> item; |
| root_list->Remove(0, &item); |
| trace_parsed_.Append(std::move(item)); |
| } |
| |
| if (!has_more_events) |
| flush_complete_event->Signal(); |
| } |
| |
| void CollectTrace(int code_added_events, int sample_events) { |
| TraceLog* trace_log = TraceLog::GetInstance(); |
| sampling_profiler_->EnableSamplingEventForTesting(code_added_events, |
| sample_events); |
| trace_log->SetEnabled( |
| TraceConfig(TRACE_DISABLED_BY_DEFAULT("v8.cpu_profile"), ""), |
| TraceLog::RECORDING_MODE); |
| base::RunLoop().RunUntilIdle(); |
| KickV8(); // Make a call to V8 so it can invoke interrupt request |
| // callbacks. |
| base::RunLoop().RunUntilIdle(); |
| sampling_profiler_->WaitSamplingEventForTesting(); |
| trace_log->SetDisabled(); |
| SyncFlush(trace_log); |
| } |
| |
| int CountEvents(const std::string& name) const { |
| size_t trace_parsed_count = trace_parsed_.GetSize(); |
| int events_count = 0; |
| for (size_t i = 0; i < trace_parsed_count; i++) { |
| const DictionaryValue* dict; |
| if (!trace_parsed_.GetDictionary(i, &dict)) |
| continue; |
| std::string value; |
| if (!dict->GetString("cat", &value) || |
| value != TRACE_DISABLED_BY_DEFAULT("v8.cpu_profile")) |
| continue; |
| if (!dict->GetString("name", &value) || value != name) |
| continue; |
| ++events_count; |
| } |
| return events_count; |
| } |
| |
| std::unique_ptr<V8SamplingProfiler> sampling_profiler_; |
| base::Lock lock_; |
| |
| ListValue trace_parsed_; |
| TraceResultBuffer trace_buffer_; |
| TraceResultBuffer::SimpleOutput json_output_; |
| }; |
| |
| TEST_F(V8SamplingProfilerTest, V8SamplingEventFired) { |
| sampling_profiler_->EnableSamplingEventForTesting(0, 0); |
| TraceLog::GetInstance()->SetEnabled( |
| TraceConfig(TRACE_DISABLED_BY_DEFAULT("v8.cpu_profile"), ""), |
| TraceLog::RECORDING_MODE); |
| base::RunLoop().RunUntilIdle(); |
| sampling_profiler_->WaitSamplingEventForTesting(); |
| TraceLog::GetInstance()->SetDisabled(); |
| base::RunLoop().RunUntilIdle(); |
| } |
| |
| TEST_F(V8SamplingProfilerTest, V8SamplingJitCodeEventsCollected) { |
| CollectTrace(1, 0); |
| int jit_code_added_events_count = CountEvents("JitCodeAdded"); |
| CHECK_LT(0, jit_code_added_events_count); |
| base::RunLoop().RunUntilIdle(); |
| } |
| |
| TEST_F(V8SamplingProfilerTest, V8SamplingSamplesCollected) { |
| CollectTrace(0, 1); |
| int sample_events_count = CountEvents("V8Sample"); |
| CHECK_LT(0, sample_events_count); |
| base::RunLoop().RunUntilIdle(); |
| } |
| |
| } // namespace content |