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Possible fix for some atomic exchange errors.

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This commit is contained in:
David Reid
2019-09-29 15:49:16 +10:00
parent d1f70beba4
commit 6cf6f3f9d8
1 changed files with 30 additions and 10 deletions
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miniaudio.h
+30 -10
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@@ -4360,18 +4360,38 @@ void ma_split_buffer(void* pBuffer, size_t bufferSize, size_t splitCount, size_t
Atomics
******************************************************************************/
#if defined(__clang__)
#if defined(__has_builtin)
#if __has_builtin(__sync_swap)
#define MA_HAS_SYNC_SWAP
#endif
#endif
#elif defined(__GNUC__)
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC__ >= 7)
#define MA_HAS_GNUC_ATOMICS
#endif
#endif
#if defined(_WIN32) && !defined(__GNUC__) && !defined(__clang__)
#define ma_memory_barrier() MemoryBarrier()
#define ma_atomic_exchange_32(a, b) InterlockedExchange((LONG*)a, (LONG)b)
#define ma_atomic_exchange_64(a, b) InterlockedExchange64((LONGLONG*)a, (LONGLONG)b)
#define ma_atomic_increment_32(a) InterlockedIncrement((LONG*)a)
#define ma_atomic_decrement_32(a) InterlockedDecrement((LONG*)a)
#define ma_memory_barrier() MemoryBarrier()
#define ma_atomic_exchange_32(a, b) InterlockedExchange((LONG*)a, (LONG)b)
#define ma_atomic_exchange_64(a, b) InterlockedExchange64((LONGLONG*)a, (LONGLONG)b)
#define ma_atomic_increment_32(a) InterlockedIncrement((LONG*)a)
#define ma_atomic_decrement_32(a) InterlockedDecrement((LONG*)a)
#else
#define ma_memory_barrier() __sync_synchronize()
#define ma_atomic_exchange_32(a, b) (void)__sync_lock_test_and_set(a, b); __sync_synchronize()
#define ma_atomic_exchange_64(a, b) (void)__sync_lock_test_and_set(a, b); __sync_synchronize()
#define ma_atomic_increment_32(a) __sync_add_and_fetch(a, 1)
#define ma_atomic_decrement_32(a) __sync_sub_and_fetch(a, 1)
#define ma_memory_barrier() __sync_synchronize()
#if defined(MA_HAS_SYNC_SWAP)
#define ma_atomic_exchange_32(a, b) __sync_swap(a, b)
#define ma_atomic_exchange_64(a, b) __sync_swap(a, b)
#elif defined(MA_HAS_GNUC_ATOMICS)
#define ma_atomic_exchange_32(a, b) (void)__atomic_exchange_n(a, b, __ATOMIC_ACQ_REL)
#define ma_atomic_exchange_64(a, b) (void)__atomic_exchange_n(a, b, __ATOMIC_ACQ_REL)
#else
#define ma_atomic_exchange_32(a, b) __sync_synchronize(); (void)__sync_lock_test_and_set(a, b)
#define ma_atomic_exchange_64(a, b) __sync_synchronize(); (void)__sync_lock_test_and_set(a, b)
#endif
#define ma_atomic_increment_32(a) __sync_add_and_fetch(a, 1)
#define ma_atomic_decrement_32(a) __sync_sub_and_fetch(a, 1)
#endif
#ifdef MA_64BIT