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comparison: ipc/chromium/src/base/lock_impl_posix.cc
ipc/chromium/src/base/lock_impl_posix.cc
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- 6474c204b198
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| -1:000000000000 | 0:fc0e55b0ae54 |
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| 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/lock_impl.h" | |
| 6 | |
| 7 #include <errno.h> | |
| 8 | |
| 9 #include "base/logging.h" | |
| 10 | |
| 11 LockImpl::LockImpl() { | |
| 12 #ifndef NDEBUG | |
| 13 // In debug, setup attributes for lock error checking. | |
| 14 pthread_mutexattr_t mta; | |
| 15 int rv = pthread_mutexattr_init(&mta); | |
| 16 DCHECK_EQ(rv, 0); | |
| 17 rv = pthread_mutexattr_settype(&mta, PTHREAD_MUTEX_ERRORCHECK); | |
| 18 DCHECK_EQ(rv, 0); | |
| 19 rv = pthread_mutex_init(&os_lock_, &mta); | |
| 20 DCHECK_EQ(rv, 0); | |
| 21 rv = pthread_mutexattr_destroy(&mta); | |
| 22 DCHECK_EQ(rv, 0); | |
| 23 #else | |
| 24 // In release, go with the default lock attributes. | |
| 25 pthread_mutex_init(&os_lock_, NULL); | |
| 26 #endif | |
| 27 } | |
| 28 | |
| 29 LockImpl::~LockImpl() { | |
| 30 int rv = pthread_mutex_destroy(&os_lock_); | |
| 31 DCHECK_EQ(rv, 0); | |
| 32 } | |
| 33 | |
| 34 bool LockImpl::Try() { | |
| 35 int rv = pthread_mutex_trylock(&os_lock_); | |
| 36 DCHECK(rv == 0 || rv == EBUSY); | |
| 37 return rv == 0; | |
| 38 } | |
| 39 | |
| 40 void LockImpl::Lock() { | |
| 41 int rv = pthread_mutex_lock(&os_lock_); | |
| 42 DCHECK_EQ(rv, 0); | |
| 43 } | |
| 44 | |
| 45 void LockImpl::Unlock() { | |
| 46 int rv = pthread_mutex_unlock(&os_lock_); | |
| 47 DCHECK_EQ(rv, 0); | |
| 48 } |
