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Put back MemoryBarrier fallback implementation on MINGW32 

This almost reverts 2761e8a632,
but only if under MINGW32, so it doesn't affect MSVC.
This commit is contained in:
Behdad Esfahbod 2013-04-04 15:02:03 -04:00
parent f368ba4a9e
commit 1f97060985
1 changed files with 8 additions and 0 deletions
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8
src/hb-atomic-private.hh
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@ -47,6 +47,14 @@
#define WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN
#include <windows.h> #include <windows.h>
#if defined(__MINGW32__) && !defined(MemoryBarrier)
static inline void _HBMemoryBarrier (void) {
long dummy = 0;
InterlockedExchange (&dummy, 1);
}
# define MemoryBarrier _HBMemoryBarrier
#endif
typedef LONG hb_atomic_int_t; typedef LONG hb_atomic_int_t;
#define hb_atomic_int_add(AI, V) InterlockedExchangeAdd (&(AI), (V)) #define hb_atomic_int_add(AI, V) InterlockedExchangeAdd (&(AI), (V))