base/profiler/scoped_profile.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/profiler/scoped_profile.h"
   6
   7 #include "base/location.h"
   8 #include "base/tracked_objects.h"
   9
  10
  11 namespace tracked_objects {
  12
  13
  14 ScopedProfile::ScopedProfile(const Location& location)
  15     : birth_(ThreadData::TallyABirthIfActive(location)),
  16       start_of_run_(ThreadData::NowForStartOfRun(birth_)) {
  17 }
  18
  19 ScopedProfile::~ScopedProfile() {
  20   StopClockAndTally();
  21 }
  22
  23 void ScopedProfile::StopClockAndTally() {
  24   if (!birth_)
  25     return;
  26   ThreadData::TallyRunInAScopedRegionIfTracking(birth_, start_of_run_,
  27                                                 ThreadData::NowForEndOfRun());
  28   birth_ = NULL;
  29 }
  30
  31 }  // namespace tracked_objects