Move webrtc/{base => rtc_base}

webrtc/base/sequenced_task_checker_impl.cc

-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "webrtc/base/sequenced_task_checker_impl.h"
-
-#if defined(WEBRTC_MAC)
-#include <dispatch/dispatch.h>
-#endif
-
-#include "webrtc/base/platform_thread.h"
-#include "webrtc/base/sequenced_task_checker.h"
-#include "webrtc/base/task_queue.h"
-
-namespace rtc {
-
-SequencedTaskCheckerImpl::SequencedTaskCheckerImpl()
-    : attached_(true), valid_queue_(TaskQueue::Current()) {}
-
-SequencedTaskCheckerImpl::~SequencedTaskCheckerImpl() {}
-
-bool SequencedTaskCheckerImpl::CalledSequentially() const {
-  QueueId current_queue = TaskQueue::Current();
-#if defined(WEBRTC_MAC)
-  // If we're not running on a TaskQueue, use the system dispatch queue
-  // label as an identifier.
-  if (current_queue == nullptr)
-    current_queue = dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL);
-#endif
-  CritScope scoped_lock(&lock_);
-  if (!attached_) {  // true if previously detached.
-    valid_queue_ = current_queue;
-    attached_ = true;
-  }
-  if (!valid_queue_)
-    return thread_checker_.CalledOnValidThread();
-  return valid_queue_ == current_queue;
-}
-
-void SequencedTaskCheckerImpl::Detach() {
-  CritScope scoped_lock(&lock_);
-  attached_ = false;
-  valid_queue_ = nullptr;
-  thread_checker_.DetachFromThread();
-}
-
-namespace internal {
-
-SequencedTaskCheckerScope::SequencedTaskCheckerScope(
-    const SequencedTaskChecker* checker) {
-  RTC_DCHECK(checker->CalledSequentially());
-}
-
-SequencedTaskCheckerScope::~SequencedTaskCheckerScope() {}
-
-}  // namespace internal
-}  // namespace rtc