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1 /*
2  *  Copyright (c) 2011 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 #include "webrtc/system_wrappers/source/rw_lock_posix.h"
12 
13 namespace webrtc {
14 
RWLockPosix()15 RWLockPosix::RWLockPosix() : lock_() {
16 }
17 
~RWLockPosix()18 RWLockPosix::~RWLockPosix() {
19   pthread_rwlock_destroy(&lock_);
20 }
21 
Create()22 RWLockPosix* RWLockPosix::Create() {
23   RWLockPosix* ret_val = new RWLockPosix();
24   if (!ret_val->Init()) {
25     delete ret_val;
26     return NULL;
27   }
28   return ret_val;
29 }
30 
Init()31 bool RWLockPosix::Init() {
32   return pthread_rwlock_init(&lock_, 0) == 0;
33 }
34 
AcquireLockExclusive()35 void RWLockPosix::AcquireLockExclusive() {
36   pthread_rwlock_wrlock(&lock_);
37 }
38 
ReleaseLockExclusive()39 void RWLockPosix::ReleaseLockExclusive() {
40   pthread_rwlock_unlock(&lock_);
41 }
42 
AcquireLockShared()43 void RWLockPosix::AcquireLockShared() {
44   pthread_rwlock_rdlock(&lock_);
45 }
46 
ReleaseLockShared()47 void RWLockPosix::ReleaseLockShared() {
48   pthread_rwlock_unlock(&lock_);
49 }
50 
51 }  // namespace webrtc
52