kc3-lang/SDL/src/atomic

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• Hash : 014f507c
  Author :
  Date : 2021-01-03T12:13:40
  

  Use specific acquire and release variants of InterlockedExchange on ARM _InterlockedExchange_rel() is required for correctness on ARM because the _ReadWriteBarrier() macro is only a compiler memory barrier, not a hardware memory barrier. Due to ARM's relaxed memory model, this means the '*lock = 0' write may be observed before the operations inside the lock, causing possible corruption of data protected by the lock. _InterlockedExchange_acq() is more efficient on ARM because it avoids an expensive full memory barrier that _InterlockedExchange() does.

• Files

• SDL_atomic.c
• SDL_spinlock.c

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  Description	Fork of https://github.com/libsdl-org/SDL
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