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| 1 /* | 1 /* |
| 2 * Copyright (C) 2007, 2009 Apple Inc. All rights reserved. | 2 * Copyright (C) 2007, 2009 Apple Inc. All rights reserved. |
| 3 * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com) | 3 * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com) |
| 4 * Copyright (C) 2011 Research In Motion Limited. All rights reserved. | 4 * Copyright (C) 2011 Research In Motion Limited. All rights reserved. |
| 5 * | 5 * |
| 6 * Redistribution and use in source and binary forms, with or without | 6 * Redistribution and use in source and binary forms, with or without |
| 7 * modification, are permitted provided that the following conditions | 7 * modification, are permitted provided that the following conditions |
| 8 * are met: | 8 * are met: |
| 9 * | 9 * |
| 10 * 1. Redistributions of source code must retain the above copyright | 10 * 1. Redistributions of source code must retain the above copyright |
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| 98 #endif | 98 #endif |
| 99 } | 99 } |
| 100 | 100 |
| 101 MutexBase::MutexBase(bool recursive) { | 101 MutexBase::MutexBase(bool recursive) { |
| 102 pthread_mutexattr_t attr; | 102 pthread_mutexattr_t attr; |
| 103 pthread_mutexattr_init(&attr); | 103 pthread_mutexattr_init(&attr); |
| 104 pthread_mutexattr_settype( | 104 pthread_mutexattr_settype( |
| 105 &attr, recursive ? PTHREAD_MUTEX_RECURSIVE : PTHREAD_MUTEX_NORMAL); | 105 &attr, recursive ? PTHREAD_MUTEX_RECURSIVE : PTHREAD_MUTEX_NORMAL); |
| 106 | 106 |
| 107 int result = pthread_mutex_init(&m_mutex.m_internalMutex, &attr); | 107 int result = pthread_mutex_init(&m_mutex.m_internalMutex, &attr); |
| 108 ASSERT_UNUSED(result, !result); | 108 DCHECK_EQ(result, 0); |
| 109 #if ENABLE(ASSERT) | 109 #if ENABLE(ASSERT) |
| 110 m_mutex.m_recursionCount = 0; | 110 m_mutex.m_recursionCount = 0; |
| 111 #endif | 111 #endif |
| 112 | 112 |
| 113 pthread_mutexattr_destroy(&attr); | 113 pthread_mutexattr_destroy(&attr); |
| 114 } | 114 } |
| 115 | 115 |
| 116 MutexBase::~MutexBase() { | 116 MutexBase::~MutexBase() { |
| 117 int result = pthread_mutex_destroy(&m_mutex.m_internalMutex); | 117 int result = pthread_mutex_destroy(&m_mutex.m_internalMutex); |
| 118 ASSERT_UNUSED(result, !result); | 118 DCHECK_EQ(result, 0); |
| 119 } | 119 } |
| 120 | 120 |
| 121 void MutexBase::lock() { | 121 void MutexBase::lock() { |
| 122 int result = pthread_mutex_lock(&m_mutex.m_internalMutex); | 122 int result = pthread_mutex_lock(&m_mutex.m_internalMutex); |
| 123 ASSERT_UNUSED(result, !result); | 123 DCHECK_EQ(result, 0); |
| 124 #if ENABLE(ASSERT) | 124 #if ENABLE(ASSERT) |
| 125 ++m_mutex.m_recursionCount; | 125 ++m_mutex.m_recursionCount; |
| 126 #endif | 126 #endif |
| 127 } | 127 } |
| 128 | 128 |
| 129 void MutexBase::unlock() { | 129 void MutexBase::unlock() { |
| 130 #if ENABLE(ASSERT) | 130 #if ENABLE(ASSERT) |
| 131 ASSERT(m_mutex.m_recursionCount); | 131 ASSERT(m_mutex.m_recursionCount); |
| 132 --m_mutex.m_recursionCount; | 132 --m_mutex.m_recursionCount; |
| 133 #endif | 133 #endif |
| 134 int result = pthread_mutex_unlock(&m_mutex.m_internalMutex); | 134 int result = pthread_mutex_unlock(&m_mutex.m_internalMutex); |
| 135 ASSERT_UNUSED(result, !result); | 135 DCHECK_EQ(result, 0); |
| 136 } | 136 } |
| 137 | 137 |
| 138 // There is a separate tryLock implementation for the Mutex and the | 138 // There is a separate tryLock implementation for the Mutex and the |
| 139 // RecursiveMutex since on Windows we need to manually check if tryLock should | 139 // RecursiveMutex since on Windows we need to manually check if tryLock should |
| 140 // succeed or not for the non-recursive mutex. On Linux the two implementations | 140 // succeed or not for the non-recursive mutex. On Linux the two implementations |
| 141 // are equal except we can assert the recursion count is always zero for the | 141 // are equal except we can assert the recursion count is always zero for the |
| 142 // non-recursive mutex. | 142 // non-recursive mutex. |
| 143 bool Mutex::tryLock() { | 143 bool Mutex::tryLock() { |
| 144 int result = pthread_mutex_trylock(&m_mutex.m_internalMutex); | 144 int result = pthread_mutex_trylock(&m_mutex.m_internalMutex); |
| 145 if (result == 0) { | 145 if (result == 0) { |
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| 177 pthread_cond_init(&m_condition, nullptr); | 177 pthread_cond_init(&m_condition, nullptr); |
| 178 } | 178 } |
| 179 | 179 |
| 180 ThreadCondition::~ThreadCondition() { | 180 ThreadCondition::~ThreadCondition() { |
| 181 pthread_cond_destroy(&m_condition); | 181 pthread_cond_destroy(&m_condition); |
| 182 } | 182 } |
| 183 | 183 |
| 184 void ThreadCondition::wait(MutexBase& mutex) { | 184 void ThreadCondition::wait(MutexBase& mutex) { |
| 185 PlatformMutex& platformMutex = mutex.impl(); | 185 PlatformMutex& platformMutex = mutex.impl(); |
| 186 int result = pthread_cond_wait(&m_condition, &platformMutex.m_internalMutex); | 186 int result = pthread_cond_wait(&m_condition, &platformMutex.m_internalMutex); |
| 187 ASSERT_UNUSED(result, !result); | 187 DCHECK_EQ(result, 0); |
| 188 #if ENABLE(ASSERT) | 188 #if ENABLE(ASSERT) |
| 189 ++platformMutex.m_recursionCount; | 189 ++platformMutex.m_recursionCount; |
| 190 #endif | 190 #endif |
| 191 } | 191 } |
| 192 | 192 |
| 193 bool ThreadCondition::timedWait(MutexBase& mutex, double absoluteTime) { | 193 bool ThreadCondition::timedWait(MutexBase& mutex, double absoluteTime) { |
| 194 if (absoluteTime < currentTime()) | 194 if (absoluteTime < currentTime()) |
| 195 return false; | 195 return false; |
| 196 | 196 |
| 197 if (absoluteTime > INT_MAX) { | 197 if (absoluteTime > INT_MAX) { |
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| 210 int result = pthread_cond_timedwait( | 210 int result = pthread_cond_timedwait( |
| 211 &m_condition, &platformMutex.m_internalMutex, &targetTime); | 211 &m_condition, &platformMutex.m_internalMutex, &targetTime); |
| 212 #if ENABLE(ASSERT) | 212 #if ENABLE(ASSERT) |
| 213 ++platformMutex.m_recursionCount; | 213 ++platformMutex.m_recursionCount; |
| 214 #endif | 214 #endif |
| 215 return result == 0; | 215 return result == 0; |
| 216 } | 216 } |
| 217 | 217 |
| 218 void ThreadCondition::signal() { | 218 void ThreadCondition::signal() { |
| 219 int result = pthread_cond_signal(&m_condition); | 219 int result = pthread_cond_signal(&m_condition); |
| 220 ASSERT_UNUSED(result, !result); | 220 DCHECK_EQ(result, 0); |
| 221 } | 221 } |
| 222 | 222 |
| 223 void ThreadCondition::broadcast() { | 223 void ThreadCondition::broadcast() { |
| 224 int result = pthread_cond_broadcast(&m_condition); | 224 int result = pthread_cond_broadcast(&m_condition); |
| 225 ASSERT_UNUSED(result, !result); | 225 DCHECK_EQ(result, 0); |
| 226 } | 226 } |
| 227 | 227 |
| 228 #if ENABLE(ASSERT) | 228 #if ENABLE(ASSERT) |
| 229 static bool s_threadCreated = false; | 229 static bool s_threadCreated = false; |
| 230 | 230 |
| 231 bool isAtomicallyInitializedStaticMutexLockHeld() { | 231 bool isAtomicallyInitializedStaticMutexLockHeld() { |
| 232 return atomicallyInitializedStaticMutex && | 232 return atomicallyInitializedStaticMutex && |
| 233 atomicallyInitializedStaticMutex->locked(); | 233 atomicallyInitializedStaticMutex->locked(); |
| 234 } | 234 } |
| 235 | 235 |
| 236 bool isBeforeThreadCreated() { | 236 bool isBeforeThreadCreated() { |
| 237 return !s_threadCreated; | 237 return !s_threadCreated; |
| 238 } | 238 } |
| 239 | 239 |
| 240 void willCreateThread() { | 240 void willCreateThread() { |
| 241 s_threadCreated = true; | 241 s_threadCreated = true; |
| 242 } | 242 } |
| 243 #endif | 243 #endif |
| 244 | 244 |
| 245 } // namespace WTF | 245 } // namespace WTF |
| 246 | 246 |
| 247 #endif // OS(POSIX) | 247 #endif // OS(POSIX) |
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