1/*
2 *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11// Borrowed from Chromium's src/base/threading/thread_checker_impl.cc.
12
13#include "webrtc/base/thread_checker_impl.h"
14
15#include "webrtc/base/platform_thread.h"
16
17namespace rtc {
18
19ThreadCheckerImpl::ThreadCheckerImpl() : valid_thread_(CurrentThreadRef()) {
20}
21
22ThreadCheckerImpl::~ThreadCheckerImpl() {
23}
24
25bool ThreadCheckerImpl::CalledOnValidThread() const {
26  const PlatformThreadRef current_thread = CurrentThreadRef();
27  CritScope scoped_lock(&lock_);
28  if (!valid_thread_)  // Set if previously detached.
29    valid_thread_ = current_thread;
30  return IsThreadRefEqual(valid_thread_, current_thread);
31}
32
33void ThreadCheckerImpl::DetachFromThread() {
34  CritScope scoped_lock(&lock_);
35  valid_thread_ = 0;
36}
37
38}  // namespace rtc
39