base/sequence_checker_impl.cc

   1 // Copyright (c) 2012 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/sequence_checker_impl.h"
   6
   7 #include "base/sequenced_task_runner.h"
   8
   9 namespace base {
  10
  11 SequenceCheckerImpl::SequenceCheckerImpl(
  12     const scoped_refptr<SequencedTaskRunner>& sequenced_task_runner)
  13     : sequenced_task_runner_(sequenced_task_runner) {}
  14
  15 SequenceCheckerImpl::~SequenceCheckerImpl() {}
  16
  17 bool SequenceCheckerImpl::CalledOnValidSequence() const {
  18   AutoLock auto_lock(lock_);
  19   return sequenced_task_runner_.get() ?
  20       sequenced_task_runner_->RunsTasksOnCurrentThread() :
  21       thread_checker_.CalledOnValidThread();
  22 }
  23
  24 void SequenceCheckerImpl::ChangeSequence(
  25     const scoped_refptr<SequencedTaskRunner>& sequenced_task_runner) {
  26   AutoLock auto_lock(lock_);
  27   sequenced_task_runner_ = sequenced_task_runner;
  28   thread_checker_.DetachFromThread();
  29 }
  30
  31 }  // namespace base