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- fix atomic header to compile happily under msvc 6.0
This commit is contained in:
Jørgen P. Tjernø 2013-02-25 16:52:48 -08:00
parent cf58b77360
commit a3482e3ac0
1 changed files with 2 additions and 2 deletions
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4
include/SDL_atomic.h
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@ -126,7 +126,7 @@ extern DECLSPEC void SDLCALL SDL_AtomicUnlock(SDL_SpinLock *lock);
* The compiler barrier prevents the compiler from reordering
* reads and writes to globally visible variables across the call.
*/
#ifdef _MSC_VER
#if defined(_MSC_VER) && (_MSC_VER > 1200)
void _ReadWriteBarrier(void);
#pragma intrinsic(_ReadWriteBarrier)
#define SDL_CompilerBarrier() _ReadWriteBarrier()
@ -134,7 +134,7 @@ void _ReadWriteBarrier(void);
#define SDL_CompilerBarrier() __asm__ __volatile__ ("" : : : "memory")
#else
#define SDL_CompilerBarrier() \
({ SDL_SpinLock _tmp = 0; SDL_AtomicLock(&_tmp); SDL_AtomicUnlock(&_tmp); })
{ SDL_SpinLock _tmp = 0; SDL_AtomicLock(&_tmp); SDL_AtomicUnlock(&_tmp); }
#endif
/* Platform specific optimized versions of the atomic functions,