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Use VisualStudio-style atomic intrinsics on mingw32

This commit is contained in:
Behdad Esfahbod 2012-08-28 18:03:35 -04:00
parent 7c8e844d92
commit 52ff2681d8
1 changed files with 18 additions and 7 deletions
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25
src/hb-atomic-private.hh
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@ -42,17 +42,28 @@
#if 0
#elif !defined(HB_NO_MT) && defined(_MSC_VER) && _MSC_VER >= 1600
#elif !defined(HB_NO_MT) && defined(_MSC_VER) || defined(__MINGW32__)
#include <intrin.h>
/* On x86, _InterlockedCompareExchangePointer is a macro defined in concrt.h */
#include <concrt.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
/* mingw32 does not have MemoryBarrier.
* MemoryBarrier may be defined as a macro or a function.
* Just make a failsafe version for ourselves. */
#ifdef MemoryBarrier
#define HBMemoryBarrier MemoryBarrier
#else
static inline void HBMemoryBarrier (void) {
long dummy = 0;
InterlockedExchange (&dummy, 1);
}
#endif
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))
#define hb_atomic_ptr_get(P) (MemoryBarrier (), (void *) *(P))
#define hb_atomic_ptr_cmpexch(P,O,N) (_InterlockedCompareExchangePointer ((void **) (P), (void *) (N), (void *) (O)) == (void *) (O))
#define hb_atomic_ptr_get(P) (HBMemoryBarrier (), (void *) *(P))
#define hb_atomic_ptr_cmpexch(P,O,N) (InterlockedCompareExchangePointer ((void **) (P), (void *) (N), (void *) (O)) == (void *) (O))
#elif !defined(HB_NO_MT) && defined(__APPLE__)