diff options
Diffstat (limited to 'lib/libthr/thread/thr_umtx.c')
| -rw-r--r-- | lib/libthr/thread/thr_umtx.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/libthr/thread/thr_umtx.c b/lib/libthr/thread/thr_umtx.c index 8a8c908..9de346e 100644 --- a/lib/libthr/thread/thr_umtx.c +++ b/lib/libthr/thread/thr_umtx.c @@ -131,6 +131,8 @@ _thr_ucond_wait(struct ucond *cv, struct umutex *m, int _thr_ucond_signal(struct ucond *cv) { + if (!cv->c_has_waiters) + return (0); if (_umtx_op(cv, UMTX_OP_CV_SIGNAL, 0, NULL, NULL) == 0) return (0); return (errno); @@ -139,6 +141,8 @@ _thr_ucond_signal(struct ucond *cv) int _thr_ucond_broadcast(struct ucond *cv) { + if (!cv->c_has_waiters) + return (0); if (_umtx_op(cv, UMTX_OP_CV_BROADCAST, 0, NULL, NULL) == 0) return (0); return (errno); |
