diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/stc/csptr.h | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/include/stc/csptr.h b/include/stc/csptr.h index 7415c20a..b702f461 100644 --- a/include/stc/csptr.h +++ b/include/stc/csptr.h @@ -65,11 +65,8 @@ typedef long atomic_count_t; #elif defined(__i386__) || defined(__x86_64__)
STC_INLINE void c_atomic_increment(atomic_count_t* v)
{ __asm__ __volatile__("lock; incq %0" :"=m"(*v) :"m"(*v)); }
- STC_INLINE atomic_count_t c_atomic_decrement(atomic_count_t* v) {
- atomic_count_t r;
- __asm__ __volatile__("lock; xadd %0, %1" :"=r"(r) :"m"(*v), "0"(-1));
- return r - 1;
- }
+ STC_INLINE atomic_count_t c_atomic_decrement(atomic_count_t* v)
+ { __asm__ __volatile__("lock; decq %0" :"=m"(*v) :"m"(*v)); return *v; }
#endif
#define csptr_null {NULL, NULL}
@@ -181,4 +178,4 @@ _cx_memb(_compare)(const _cx_self* x, const _cx_self* y) { #undef cx_increment
#undef cx_decrement
#undef i_nonatomic
-#include "template.h"
\ No newline at end of file +#include "template.h"
|