diff options
| -rw-r--r-- | src/thread/pthread_once.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/src/thread/pthread_once.c b/src/thread/pthread_once.c index 41872f16..e01f6d48 100644 --- a/src/thread/pthread_once.c +++ b/src/thread/pthread_once.c @@ -18,7 +18,7 @@ int pthread_once(pthread_once_t *control, void (*init)(void)) * 1 - another thread is running init; wait * 2 - another thread finished running init; just return */ - for (;;) switch (a_swap(control, 1)) { + for (;;) switch (a_cas(control, 0, 1)) { case 0: pthread_cleanup_push(undo, control); init(); @@ -31,7 +31,6 @@ int pthread_once(pthread_once_t *control, void (*init)(void)) __wait(control, &waiters, 1, 0); continue; case 2: - a_store(control, 2); return 0; } } |