walkero
/
harfbuzz
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Add atomic ops for AIX 

Patch from Volker Simonis.
This commit is contained in:
Behdad Esfahbod 2015-12-10 15:54:42 +01:00
parent 98460779ba
commit 70b33edae7
1 changed files with 25 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
src/hb-atomic-private.hh
View File

@ -119,6 +119,31 @@ typedef unsigned int hb_atomic_int_impl_t;
#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)
#elif !defined(HB_NO_MT) && defined(_AIX)
#include <builtins.h>
static inline int hb_fetch_and_add(volatile int* AI, unsigned int V) {
__lwsync();
int result = __fetch_and_add(AI, V);
__isync();
return result;
}
static inline int hb_compare_and_swaplp(volatile long* P, long O, long N) {
__sync();
int result = __compare_and_swaplp (P, &O, N);
__sync();
return result;
}
typedef int hb_atomic_int_impl_t;
#define HB_ATOMIC_INT_IMPL_INIT(V) (V)
#define hb_atomic_int_impl_add(AI, V) hb_fetch_and_add (&(AI), (V))
#define hb_atomic_ptr_impl_get(P) (__sync(), (void *) *(P))
#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. */