diff options
| author | davidxu <davidxu@FreeBSD.org> | 2012-01-16 06:15:14 +0000 |
|---|---|---|
| committer | davidxu <davidxu@FreeBSD.org> | 2012-01-16 06:15:14 +0000 |
| commit | 8c9cfa24de66dab31dbbfa02c62ec9e59ca23154 (patch) | |
| tree | 70dfbacc2a1965484fe6fbb8737bb28f2446c999 /lib/libc/gen/sem_new.c | |
| parent | b77656256dd94f765cbcdf9cd37c4db48e81909b (diff) | |
| download | FreeBSD-src-8c9cfa24de66dab31dbbfa02c62ec9e59ca23154.zip FreeBSD-src-8c9cfa24de66dab31dbbfa02c62ec9e59ca23154.tar.gz | |
Insert read memory barriers.
Diffstat (limited to 'lib/libc/gen/sem_new.c')
| -rw-r--r-- | lib/libc/gen/sem_new.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/libc/gen/sem_new.c b/lib/libc/gen/sem_new.c index 2698b40..1480afb 100644 --- a/lib/libc/gen/sem_new.c +++ b/lib/libc/gen/sem_new.c @@ -332,6 +332,7 @@ _sem_getvalue(sem_t * __restrict sem, int * __restrict sval) static __inline int usem_wake(struct _usem *sem) { + rmb(); if (!sem->_has_waiters) return (0); return _umtx_op(sem, UMTX_OP_SEM_WAKE, 0, NULL, NULL); |
