diff options
Diffstat (limited to 'linuxthreads/mutex.c')
| -rw-r--r-- | linuxthreads/mutex.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/linuxthreads/mutex.c b/linuxthreads/mutex.c index 3ad27942af..3c97ea7d66 100644 --- a/linuxthreads/mutex.c +++ b/linuxthreads/mutex.c @@ -285,7 +285,10 @@ int __pthread_once(pthread_once_t * once_control, void (*init_routine)(void)) int state_changed; /* Test without locking first for speed */ - if (*once_control == DONE) return 0; + if (*once_control == DONE) { + READ_MEMORY_BARRIER(); + return 0; + } /* Lock and test again */ state_changed = 0; @@ -310,6 +313,7 @@ int __pthread_once(pthread_once_t * once_control, void (*init_routine)(void)) init_routine(); pthread_cleanup_pop(0); pthread_mutex_lock(&once_masterlock); + WRITE_MEMORY_BARRIER(); *once_control = DONE; state_changed = 1; } |