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[atomic] Some more minor tweaks

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This commit is contained in:
Behdad Esfahbod 2018-08-01 13:59:31 -07:00
parent 28d03a8afc
commit 006d4f031a
1 changed files with 20 additions and 11 deletions
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31
src/hb-atomic-private.hh
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@ -99,6 +99,7 @@ static inline void _hb_memory_barrier (void)
MemoryBarrier ();
#endif
}
#define _hb_memory_barrier() _hb_memory_barrier ()
typedef LONG hb_atomic_int_impl_t;
#define hb_atomic_int_impl_add(AI, V) InterlockedExchangeAdd ((AI), (V))
@ -108,11 +109,11 @@ typedef LONG hb_atomic_int_impl_t;
#elif !defined(HB_NO_MT) && defined(HAVE_INTEL_ATOMIC_PRIMITIVES)
#define _hb_memory_barrier() __sync_synchronize ()
typedef int hb_atomic_int_impl_t;
#define hb_atomic_int_impl_add(AI, V) __sync_fetch_and_add ((AI), (V))
static inline void _hb_memory_barrier (void) { __sync_synchronize (); }
#define hb_atomic_ptr_impl_cmpexch(P,O,N) __sync_bool_compare_and_swap ((P), (O), (N))
@ -121,11 +122,13 @@ static inline void _hb_memory_barrier (void) { __sync_synchronize (); }
#include <atomic.h>
#include <mbarrier.h>
#define _hb_memory_r_barrier() __machine_r_barrier ()
#define _hb_memory_w_barrier() __machine_r_barrier ()
#define _hb_memory_barrier() __machine_rw_barrier ()
typedef unsigned int hb_atomic_int_impl_t;
#define hb_atomic_int_impl_add(AI, V) ( ({__machine_rw_barrier ();}), atomic_add_int_nv ((AI), (V)) - (V) /* XXX barrier again? */)
static inline void _hb_memory_barrier (void) { __machine_rw_barrier (); }
#define hb_atomic_ptr_impl_cmpexch(P,O,N) ( ({__machine_rw_barrier ();}), atomic_cas_ptr ((void **) (P), (void *) (O), (void *) (N)) == (void *) (O) ? true : false /* XXX barrier again? */)
@ -138,12 +141,11 @@ static inline void _hb_memory_barrier (void) { __machine_rw_barrier (); }
#include <Availability.h>
#endif
#define _hb_memory_barrier() OSMemoryBarrier ()
typedef int32_t hb_atomic_int_impl_t;
#define hb_atomic_int_impl_add(AI, V) (OSAtomicAdd32Barrier ((V), (AI)) - (V))
static inline void _hb_memory_barrier (void) { OSMemoryBarrier (); }
#if (MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_4 || __IPHONE_VERSION_MIN_REQUIRED >= 20100)
#define hb_atomic_ptr_impl_cmpexch(P,O,N) OSAtomicCompareAndSwapPtrBarrier ((void *) (O), (void *) (N), (void **) (P))
#else
@ -159,7 +161,6 @@ static inline void _hb_memory_barrier (void) { OSMemoryBarrier (); }
#include <builtins.h>
static inline int _hb_fetch_and_add(volatile int* AI, unsigned int V) {
__lwsync();
int result = __fetch_and_add(AI, V);
@ -173,21 +174,23 @@ static inline int _hb_compare_and_swaplp(volatile long* P, long O, long N) {
return result;
}
#define _hb_memory_barrier() __lwsync ()
typedef int hb_atomic_int_impl_t;
#define hb_atomic_int_impl_add(AI, V) _hb_fetch_and_add ((AI), (V))
static inline void _hb_memory_barrier (void) { __lwsync(); }
#define hb_atomic_ptr_impl_cmpexch(P,O,N) _hb_compare_and_swaplp ((long*)(P), (long)(O), (long)(N))
#elif !defined(HB_NO_MT)
#define HB_ATOMIC_INT_NIL 1 /* Warn that fallback implementation is in use. */
#define _hb_memory_barrier()
typedef volatile int hb_atomic_int_impl_t;
#define hb_atomic_int_impl_add(AI, V) ((*(AI) += (V)) - (V))
static inline void _hb_memory_barrier (void) {}
#define hb_atomic_ptr_impl_cmpexch(P,O,N) (* (void * volatile *) (P) == (void *) (O) ? (* (void * volatile *) (P) = (void *) (N), true) : false)
@ -196,7 +199,7 @@ static inline void _hb_memory_barrier (void) {}
typedef int hb_atomic_int_impl_t;
#define hb_atomic_int_impl_add(AI, V) ((*(AI) += (V)) - (V))
static inline void _hb_memory_barrier (void) {}
#define _hb_memory_barrier()
#define hb_atomic_ptr_impl_cmpexch(P,O,N) (* (void **) (P) == (void *) (O) ? (* (void **) (P) = (void *) (N), true) : false)
@ -204,6 +207,12 @@ static inline void _hb_memory_barrier (void) {}
#endif
#ifndef _hb_memory_r_barrier
#define _hb_memory_r_barrier() _hb_memory_barrier ()
#endif
#ifndef _hb_memory_w_barrier
#define _hb_memory_w_barrier() _hb_memory_barrier ()
#endif
#ifndef HB_ATOMIC_INT_INIT
#define HB_ATOMIC_INT_INIT(V) {V}
#endif