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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 27 | 27 |
| 28 #include "platform/mutex.h" | 28 #include "platform/mutex.h" |
| 29 | 29 |
| 30 #include <cerrno> | 30 #include <cerrno> |
| 31 | 31 |
| 32 namespace v8 { | 32 namespace v8 { |
| 33 namespace internal { | 33 namespace internal { |
| 34 | 34 |
| 35 #if V8_OS_POSIX | 35 #if V8_OS_POSIX |
| 36 | 36 |
| 37 static V8_INLINE(void InitializeNativeHandle(pthread_mutex_t* mutex)) { | 37 static V8_INLINE void InitializeNativeHandle(pthread_mutex_t* mutex) { |
| 38 int result; | 38 int result; |
| 39 #if defined(DEBUG) | 39 #if defined(DEBUG) |
| 40 // Use an error checking mutex in debug mode. | 40 // Use an error checking mutex in debug mode. |
| 41 pthread_mutexattr_t attr; | 41 pthread_mutexattr_t attr; |
| 42 result = pthread_mutexattr_init(&attr); | 42 result = pthread_mutexattr_init(&attr); |
| 43 ASSERT_EQ(0, result); | 43 ASSERT_EQ(0, result); |
| 44 result = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK); | 44 result = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK); |
| 45 ASSERT_EQ(0, result); | 45 ASSERT_EQ(0, result); |
| 46 result = pthread_mutex_init(mutex, &attr); | 46 result = pthread_mutex_init(mutex, &attr); |
| 47 ASSERT_EQ(0, result); | 47 ASSERT_EQ(0, result); |
| 48 result = pthread_mutexattr_destroy(&attr); | 48 result = pthread_mutexattr_destroy(&attr); |
| 49 #else | 49 #else |
| 50 // Use a fast mutex (default attributes). | 50 // Use a fast mutex (default attributes). |
| 51 result = pthread_mutex_init(mutex, NULL); | 51 result = pthread_mutex_init(mutex, NULL); |
| 52 #endif // defined(DEBUG) | 52 #endif // defined(DEBUG) |
| 53 ASSERT_EQ(0, result); | 53 ASSERT_EQ(0, result); |
| 54 USE(result); | 54 USE(result); |
| 55 } | 55 } |
| 56 | 56 |
| 57 | 57 |
| 58 static V8_INLINE(void InitializeRecursiveNativeHandle(pthread_mutex_t* mutex)) { | 58 static V8_INLINE void InitializeRecursiveNativeHandle(pthread_mutex_t* mutex) { |
| 59 pthread_mutexattr_t attr; | 59 pthread_mutexattr_t attr; |
| 60 int result = pthread_mutexattr_init(&attr); | 60 int result = pthread_mutexattr_init(&attr); |
| 61 ASSERT_EQ(0, result); | 61 ASSERT_EQ(0, result); |
| 62 result = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); | 62 result = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); |
| 63 ASSERT_EQ(0, result); | 63 ASSERT_EQ(0, result); |
| 64 result = pthread_mutex_init(mutex, &attr); | 64 result = pthread_mutex_init(mutex, &attr); |
| 65 ASSERT_EQ(0, result); | 65 ASSERT_EQ(0, result); |
| 66 result = pthread_mutexattr_destroy(&attr); | 66 result = pthread_mutexattr_destroy(&attr); |
| 67 ASSERT_EQ(0, result); | 67 ASSERT_EQ(0, result); |
| 68 USE(result); | 68 USE(result); |
| 69 } | 69 } |
| 70 | 70 |
| 71 | 71 |
| 72 static V8_INLINE(void DestroyNativeHandle(pthread_mutex_t* mutex)) { | 72 static V8_INLINE void DestroyNativeHandle(pthread_mutex_t* mutex) { |
| 73 int result = pthread_mutex_destroy(mutex); | 73 int result = pthread_mutex_destroy(mutex); |
| 74 ASSERT_EQ(0, result); | 74 ASSERT_EQ(0, result); |
| 75 USE(result); | 75 USE(result); |
| 76 } | 76 } |
| 77 | 77 |
| 78 | 78 |
| 79 static V8_INLINE(void LockNativeHandle(pthread_mutex_t* mutex)) { | 79 static V8_INLINE void LockNativeHandle(pthread_mutex_t* mutex) { |
| 80 int result = pthread_mutex_lock(mutex); | 80 int result = pthread_mutex_lock(mutex); |
| 81 ASSERT_EQ(0, result); | 81 ASSERT_EQ(0, result); |
| 82 USE(result); | 82 USE(result); |
| 83 } | 83 } |
| 84 | 84 |
| 85 | 85 |
| 86 static V8_INLINE(void UnlockNativeHandle(pthread_mutex_t* mutex)) { | 86 static V8_INLINE void UnlockNativeHandle(pthread_mutex_t* mutex) { |
| 87 int result = pthread_mutex_unlock(mutex); | 87 int result = pthread_mutex_unlock(mutex); |
| 88 ASSERT_EQ(0, result); | 88 ASSERT_EQ(0, result); |
| 89 USE(result); | 89 USE(result); |
| 90 } | 90 } |
| 91 | 91 |
| 92 | 92 |
| 93 static V8_INLINE(bool TryLockNativeHandle(pthread_mutex_t* mutex)) { | 93 static V8_INLINE bool TryLockNativeHandle(pthread_mutex_t* mutex) { |
| 94 int result = pthread_mutex_trylock(mutex); | 94 int result = pthread_mutex_trylock(mutex); |
| 95 if (result == EBUSY) { | 95 if (result == EBUSY) { |
| 96 return false; | 96 return false; |
| 97 } | 97 } |
| 98 ASSERT_EQ(0, result); | 98 ASSERT_EQ(0, result); |
| 99 return true; | 99 return true; |
| 100 } | 100 } |
| 101 | 101 |
| 102 #elif V8_OS_WIN | 102 #elif V8_OS_WIN |
| 103 | 103 |
| 104 static V8_INLINE(void InitializeNativeHandle(PCRITICAL_SECTION cs)) { | 104 static V8_INLINE void InitializeNativeHandle(PCRITICAL_SECTION cs) { |
| 105 InitializeCriticalSection(cs); | 105 InitializeCriticalSection(cs); |
| 106 } | 106 } |
| 107 | 107 |
| 108 | 108 |
| 109 static V8_INLINE(void InitializeRecursiveNativeHandle(PCRITICAL_SECTION cs)) { | 109 static V8_INLINE void InitializeRecursiveNativeHandle(PCRITICAL_SECTION cs) { |
| 110 InitializeCriticalSection(cs); | 110 InitializeCriticalSection(cs); |
| 111 } | 111 } |
| 112 | 112 |
| 113 | 113 |
| 114 static V8_INLINE(void DestroyNativeHandle(PCRITICAL_SECTION cs)) { | 114 static V8_INLINE void DestroyNativeHandle(PCRITICAL_SECTION cs) { |
| 115 DeleteCriticalSection(cs); | 115 DeleteCriticalSection(cs); |
| 116 } | 116 } |
| 117 | 117 |
| 118 | 118 |
| 119 static V8_INLINE(void LockNativeHandle(PCRITICAL_SECTION cs)) { | 119 static V8_INLINE void LockNativeHandle(PCRITICAL_SECTION cs) { |
| 120 EnterCriticalSection(cs); | 120 EnterCriticalSection(cs); |
| 121 } | 121 } |
| 122 | 122 |
| 123 | 123 |
| 124 static V8_INLINE(void UnlockNativeHandle(PCRITICAL_SECTION cs)) { | 124 static V8_INLINE void UnlockNativeHandle(PCRITICAL_SECTION cs) { |
| 125 LeaveCriticalSection(cs); | 125 LeaveCriticalSection(cs); |
| 126 } | 126 } |
| 127 | 127 |
| 128 | 128 |
| 129 static V8_INLINE(bool TryLockNativeHandle(PCRITICAL_SECTION cs)) { | 129 static V8_INLINE bool TryLockNativeHandle(PCRITICAL_SECTION cs) { |
| 130 return TryEnterCriticalSection(cs); | 130 return TryEnterCriticalSection(cs); |
| 131 } | 131 } |
| 132 | 132 |
| 133 #endif // V8_OS_POSIX | 133 #endif // V8_OS_POSIX |
| 134 | 134 |
| 135 | 135 |
| 136 Mutex::Mutex() { | 136 Mutex::Mutex() { |
| 137 InitializeNativeHandle(&native_handle_); | 137 InitializeNativeHandle(&native_handle_); |
| 138 #ifdef DEBUG | 138 #ifdef DEBUG |
| 139 level_ = 0; | 139 level_ = 0; |
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| 205 return false; | 205 return false; |
| 206 } | 206 } |
| 207 #ifdef DEBUG | 207 #ifdef DEBUG |
| 208 ASSERT_LE(0, level_); | 208 ASSERT_LE(0, level_); |
| 209 level_++; | 209 level_++; |
| 210 #endif | 210 #endif |
| 211 return true; | 211 return true; |
| 212 } | 212 } |
| 213 | 213 |
| 214 } } // namespace v8::internal | 214 } } // namespace v8::internal |
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