blob: 5ad15bb5158a7a6997e9f1f5b1887dcc0048ebec [file] [log] [blame]
* Copyright (c) 2014 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.
// Borrowed from Chromium's src/base/threading/thread_checker_impl.h.
#if defined(WEBRTC_POSIX)
#include <pthread.h>
#include <unistd.h>
#include "webrtc/base/criticalsection.h"
namespace rtc {
// Used for identifying the current thread. Always an integer value.
#if defined(WEBRTC_WIN)
typedef DWORD PlatformThreadId;
typedef DWORD PlatformThreadRef;
#elif defined(WEBRTC_POSIX)
typedef pid_t PlatformThreadId;
typedef pthread_t PlatformThreadRef;
// TODO(tommi): This+PlatformThreadId belongs in a common thread related header.
PlatformThreadId CurrentThreadId();
PlatformThreadRef CurrentThreadRef();
// Compares two thread identifiers for equality.
bool IsThreadRefEqual(const PlatformThreadRef& a, const PlatformThreadRef& b);
// Real implementation of ThreadChecker, for use in debug mode, or
// for temporary use in release mode (e.g. to CHECK on a threading issue
// seen only in the wild).
// Note: You should almost always use the ThreadChecker class to get the
// right version for your build configuration.
class ThreadCheckerImpl {
bool CalledOnValidThread() const;
// Changes the thread that is checked for in CalledOnValidThread. This may
// be useful when an object may be created on one thread and then used
// exclusively on another thread.
void DetachFromThread();
mutable CriticalSection lock_;
// This is mutable so that CalledOnValidThread can set it.
// It's guarded by |lock_|.
mutable PlatformThreadRef valid_thread_;
} // namespace rtc