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, Mode mode)
  15     : birth_(NULL) {
  16   if (mode == DISABLED)
  17     return;
  18
  19   birth_ = ThreadData::TallyABirthIfActive(location);
  20   if (!birth_)
  21     return;
  22
  23   ThreadData::PrepareForStartOfRun(birth_);
  24   stopwatch_.Start();
  25 }
  26
  27 ScopedProfile::~ScopedProfile() {
  28   if (!birth_)
  29     return;
  30
  31   stopwatch_.Stop();
  32   ThreadData::TallyRunInAScopedRegionIfTracking(birth_, stopwatch_);
  33 }
  34
  35 }  // namespace tracked_objects