Revert 107895 - Fully enable about:tracking by default

base/threading/worker_pool_posix.cc

 // Copyright (c) 2011 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/threading/worker_pool_posix.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 70 matching lines @@
   PlatformThread::SetName(name.c_str());
 
   for (;;) {
     PosixDynamicThreadPool::PendingTask pending_task = pool_->WaitForTask();
     if (pending_task.task.is_null())
       break;
     UNSHIPPED_TRACE_EVENT2("task", "WorkerThread::ThreadMain::Run",
         "src_file", pending_task.posted_from.file_name(),
         "src_func", pending_task.posted_from.function_name());
 
-    tracked_objects::TrackedTime start_time =
-        tracked_objects::ThreadData::Now();
-
+#if defined(TRACK_ALL_TASK_OBJECTS)
+    TimeTicks start_of_run = tracked_objects::ThreadData::Now();
+#endif  // defined(TRACK_ALL_TASK_OBJECTS)
     pending_task.task.Run();
-
-    tracked_objects::ThreadData::TallyRunOnWorkerThreadIfTracking(
-        pending_task.birth_tally, pending_task.time_posted,
-        start_time, tracked_objects::ThreadData::Now());
+#if defined(TRACK_ALL_TASK_OBJECTS)
+    tracked_objects::ThreadData::TallyADeathIfActive(pending_task.post_births,
+        pending_task.time_posted, TimeTicks(), start_of_run,
+        tracked_objects::ThreadData::Now());
+#endif  // defined(TRACK_ALL_TASK_OBJECTS)
   }
 
   // The WorkerThread is non-joinable, so it deletes itself.
   delete this;
 }
 
 }  // namespace
 
 bool WorkerPool::PostTask(const tracked_objects::Location& from_here,
                           Task* task, bool task_is_slow) {
   g_lazy_worker_pool.Pointer()->PostTask(from_here, task, task_is_slow);
   return true;
 }
 
 bool WorkerPool::PostTask(const tracked_objects::Location& from_here,
                           const base::Closure& task, bool task_is_slow) {
   g_lazy_worker_pool.Pointer()->PostTask(from_here, task, task_is_slow);
   return true;
 }
 
 PosixDynamicThreadPool::PendingTask::PendingTask(
     const tracked_objects::Location& posted_from,
     const base::Closure& task)
     : posted_from(posted_from),
       task(task) {
-  birth_tally = tracked_objects::ThreadData::TallyABirthIfActive(posted_from);
+#if defined(TRACK_ALL_TASK_OBJECTS)
+  post_births = tracked_objects::ThreadData::TallyABirthIfActive(posted_from);
   time_posted = tracked_objects::ThreadData::Now();
+#endif  // defined(TRACK_ALL_TASK_OBJECTS)
 }
 
 PosixDynamicThreadPool::PendingTask::~PendingTask() {
 }
 
 PosixDynamicThreadPool::PosixDynamicThreadPool(
     const std::string& name_prefix,
     int idle_seconds_before_exit)
     : name_prefix_(name_prefix),
       idle_seconds_before_exit_(idle_seconds_before_exit),
@@ skipping 81 matching lines @@
       return PendingTask(FROM_HERE, base::Closure());
     }
   }
 
   PendingTask pending_task = pending_tasks_.front();
   pending_tasks_.pop();
   return pending_task;
 }
 
 }  // namespace base