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Fix atomic ops on iOS

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Patch from John Ralls.
This commit is contained in:
Behdad Esfahbod 2012-12-10 15:25:21 -05:00
parent 5f9569c139
commit 0e9f0f3e5f
1 changed files with 5 additions and 3 deletions
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8
src/hb-atomic-private.hh
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@ -69,15 +69,17 @@ typedef long hb_atomic_int_t;
#elif !defined(HB_NO_MT) && defined(__APPLE__)
#include <libkern/OSAtomic.h>
#ifdef __MAC_OS_X_MIN_REQUIRED
#include <AvailabilityMacros.h>
#elif defined(__IPHONE_OS_MIN_REQUIRED)
#include <Availability.h>
#endif
typedef int32_t hb_atomic_int_t;
#define hb_atomic_int_add(AI, V) (OSAtomicAdd32Barrier ((V), &(AI)) - (V))
#define hb_atomic_ptr_get(P) (OSMemoryBarrier (), (void *) *(P))
#if (MAX_OS_X_VERSION_MAX_ALLOWED >= MAX_OS_X_VERSION_10_5)
/* XXX We should expand the above check to also allow iPhone OS >= 2.0, but I can't find any info re
* AvailabilityMacros.h for iOS. Is it even available there? */
#if (MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_4 || __IPHONE_VERSION_MIN_REQUIRED >= 20100)
#define hb_atomic_ptr_cmpexch(P,O,N) OSAtomicCompareAndSwapPtrBarrier ((void *) (O), (void *) (N), (void **) (P))
#else
#if __ppc64__ || __x86_64__