chromium/third_party/webrtc/rtc_base/deprecated/recursive_critical_section.h

/*
 *  Copyright 2004 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.
 */

#ifndef RTC_BASE_DEPRECATED_RECURSIVE_CRITICAL_SECTION_H_
#define RTC_BASE_DEPRECATED_RECURSIVE_CRITICAL_SECTION_H_

#include <atomic>

#include "rtc_base/platform_thread_types.h"
#include "rtc_base/thread_annotations.h"

#if defined(WEBRTC_WIN)
// clang-format off
// clang formating would change include order.

// Include winsock2.h before including <windows.h> to maintain consistency with
// win32.h. To include win32.h directly, it must be broken out into its own
// build target.
#include <winsock2.h>
#include <windows.h>
#include <sal.h>  // must come after windows headers.
// clang-format on
#endif  // defined(WEBRTC_WIN)

#if defined(WEBRTC_POSIX)
#include <pthread.h>
#endif

// See notes in the 'Performance' unit test for the effects of this flag.
#define RTC_USE_NATIVE_MUTEX_ON_MAC …

#if defined(WEBRTC_MAC) && !RTC_USE_NATIVE_MUTEX_ON_MAC
#include <dispatch/dispatch.h>
#endif

namespace rtc {

// NOTE: This class is deprecated. Please use webrtc::Mutex instead!
// Search using https://www.google.com/?q=recursive+lock+considered+harmful
// to find the reasons.
//
// Locking methods (Enter, TryEnter, Leave)are const to permit protecting
// members inside a const context without requiring mutable
// RecursiveCriticalSections everywhere. RecursiveCriticalSection is
// reentrant lock.
class RTC_LOCKABLE RecursiveCriticalSection { … };

// CritScope, for serializing execution through a scope.
class RTC_SCOPED_LOCKABLE CritScope { … };

}  // namespace rtc

#endif  // RTC_BASE_DEPRECATED_RECURSIVE_CRITICAL_SECTION_H_