diff options
| author | Konstantin Belousov <kib@FreeBSD.org> | 2015-09-08 08:41:07 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2015-09-08 08:41:07 +0000 |
| commit | 3e7e67c08d3e91752a1d49b8efc66989d234cf11 (patch) | |
| tree | 820f4cc538ed756d4f9dec308bc6d438e55f1e03 /lib/libthr | |
| parent | 599acbbcd85d2abd47c7746f8e5b7d5b4c7b1883 (diff) | |
Notes
Diffstat (limited to 'lib/libthr')
| -rw-r--r-- | lib/libthr/thread/thr_once.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/libthr/thread/thr_once.c b/lib/libthr/thread/thr_once.c index 4f7037416c259..4a6b4d7a7cbb1 100644 --- a/lib/libthr/thread/thr_once.c +++ b/lib/libthr/thread/thr_once.c @@ -68,13 +68,15 @@ _pthread_once(pthread_once_t *once_control, void (*init_routine) (void)) for (;;) { state = once_control->state; - if (state == ONCE_DONE) + if (state == ONCE_DONE) { + atomic_thread_fence_acq(); return (0); + } if (state == ONCE_NEVER_DONE) { - if (atomic_cmpset_acq_int(&once_control->state, state, ONCE_IN_PROGRESS)) + if (atomic_cmpset_int(&once_control->state, state, ONCE_IN_PROGRESS)) break; } else if (state == ONCE_IN_PROGRESS) { - if (atomic_cmpset_acq_int(&once_control->state, state, ONCE_WAIT)) + if (atomic_cmpset_int(&once_control->state, state, ONCE_WAIT)) _thr_umtx_wait_uint(&once_control->state, ONCE_WAIT, NULL, 0); } else if (state == ONCE_WAIT) { _thr_umtx_wait_uint(&once_control->state, state, NULL, 0); |