blob: 0d2ae3ee34604ce049eeaacb46d8f0992acafb0f [file] [log] [blame]
* 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/rtc_base/sequenced_task_checker_impl.h"
#if defined(WEBRTC_MAC)
#include <dispatch/dispatch.h>
#include "webrtc/rtc_base/platform_thread.h"
#include "webrtc/rtc_base/sequenced_task_checker.h"
#include "webrtc/rtc_base/task_queue.h"
namespace rtc {
: 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);
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;
namespace internal {
const SequencedTaskChecker* checker) {
SequencedTaskCheckerScope::~SequencedTaskCheckerScope() {}
} // namespace internal
} // namespace rtc