upstream/opnsense-src
1
0
Fork 0
mirror of https://github.com/opnsense/src.git synced 2026-02-20 00:11:07 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Insert read memory barriers.

Browse source
This commit is contained in:
David Xu 2012-01-16 06:15:14 +00:00
parent b834944105
commit d22d46ce27
2 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
lib/libc/gen/sem.c
View file

@ -434,7 +434,7 @@ _libc_sem_post_compat(sem_t *sem)
return ksem_post((*sem)->semid);
atomic_add_rel_int(&(*sem)->count, 1);
rmb();
if ((*sem)->nwaiters)
return _umtx_wake(&(*sem)->count);
return (0);

1
lib/libc/gen/sem_new.c
View file

@ -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);