TRACE_TASK_EXECUTION case for tracing_perftests.

components/tracing/test/trace_event_perftest.cc

 // Copyright 2016 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 "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted_memory.h"
+#include "base/pending_task.h"
 #include "base/run_loop.h"
 #include "base/threading/thread.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "perf_test_helpers.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace tracing {
 namespace {
 
 using base::Bind;
+using base::Closure;
+using base::RunLoop;
 using base::Thread;
 using base::Unretained;
 using base::WaitableEvent;
 using base::trace_event::TraceConfig;
 using base::trace_event::TraceLog;
 using base::trace_event::TraceRecordMode;
 using base::trace_event::TracedValue;
 
 const int kNumRuns = 10;
 
 class TraceEventPerfTest : public ::testing::Test {
  public:
   void BeginTrace() {
     TraceConfig config("*", "");
     config.SetTraceRecordMode(TraceRecordMode::RECORD_CONTINUOUSLY);
     TraceLog::GetInstance()->SetEnabled(config, TraceLog::RECORDING_MODE);
   }
 
   void EndTraceAndFlush() {
     ScopedStopwatch stopwatch("flush");
     base::RunLoop run_loop;
     TraceLog::GetInstance()->SetDisabled();
     TraceLog::GetInstance()->Flush(
         Bind(&OnTraceDataCollected, run_loop.QuitClosure()));
     run_loop.Run();
   }
 
   static void OnTraceDataCollected(
-      base::Closure quit_closure,
+      Closure quit_closure,
       const scoped_refptr<base::RefCountedString>& events_str,
       bool has_more_events) {
 
     if (!has_more_events)
       quit_closure.Run();
   }
 
   std::unique_ptr<TracedValue> MakeTracedValue(int counter) {
     auto value = base::MakeUnique<TracedValue>();
     value->SetInteger("counter", counter);
@@ skipping 12 matching lines @@
     return value;
   }
 
   static void SubmitTraceEventsAndSignal(WaitableEvent* complete_event) {
     for (int i = 0; i < 10000; i++) {
       TRACE_EVENT0("test_category", "some call");
     }
     complete_event->Signal();
   }
 
+  static void SubmitTraceEvents(int count) {
+    for (int i = 0; i < count; i++) {
+      TRACE_EVENT0("test_category", "some call");
+    }
+  }
+
  private:
   base::MessageLoop _message_loop;
 };
 
 TEST_F(TraceEventPerfTest, Submit_10000_TRACE_EVENT0) {
   BeginTrace();
   IterableStopwatch stopwatch("events");
   for (int lap = 0; lap < kNumRuns; lap++) {
-    for (int i = 0; i < 10000; i++) {
-      TRACE_EVENT0("test_category", "TRACE_EVENT0 call");
-    }
+    SubmitTraceEvents(10000);
     stopwatch.NextLap();
   }
   EndTraceAndFlush();
 }
 
 TEST_F(TraceEventPerfTest, Long_TRACE_EVENT0) {
   BeginTrace();
   IterableStopwatch stopwatch("long_event");
   for (int lap = 0; lap < kNumRuns; lap++) {
     TRACE_EVENT0("test_category", "Outer event");
-    for (int i = 0; i < 10000; i++) {
-      TRACE_EVENT0("test_category", "TRACE_EVENT0 call");
-    }
+    SubmitTraceEvents(10000);
     stopwatch.NextLap();
   }
   EndTraceAndFlush();
 }
 
 TEST_F(TraceEventPerfTest, Create_10000_TracedValue) {
   std::unique_ptr<TracedValue> value;
   {
     ScopedStopwatch value_sw("create_traced_values");
     for (int i = 0; i < 10000; i++) {
@@ skipping 44 matching lines @@
       complete_events[i]->Wait();
     }
   }
 
   EndTraceAndFlush();
   for (int i = 0; i < kNumThreads; i++) {
     threads[i]->Stop();
   }
 }
 
+TEST_F(TraceEventPerfTest, Submit_10000_TRACE_EVENT0_in_traceable_tasks) {
+  BeginTrace();
+  IterableStopwatch task_sw("events_in_task");
+  for (int i = 0; i < 100; i++) {
+    base::PendingTask pending_task(FROM_HERE, Bind(&SubmitTraceEvents, 10000));
+    TRACE_TASK_EXECUTION("TraceEventPerfTest::PendingTask", pending_task);
+    std::move(pending_task.task).Run();
+    task_sw.NextLap();
+  }
+  EndTraceAndFlush();
+}
+
+TEST_F(TraceEventPerfTest, Submit_10000_TRACE_EVENT0_with_tracing_disabled) {
+  ScopedStopwatch stopwatch("events");
+  SubmitTraceEvents(10000);
+}
+
 }  // namespace
 }  // namespace tracing