Author: davidxu
Date: Sun Aug 12 00:56:56 2012
New Revision: 239206
URL: http://svn.freebsd.org/changeset/base/239206
Log:
Do defered mutex wakeup once.
Modified:
head/lib/libthr/thread/thr_cond.c
Modified: head/lib/libthr/thread/thr_cond.c
==============================================================================
--- head/lib/libthr/thread/thr_cond.c Sun Aug 12 00:46:15 2012
(r239205)
+++ head/lib/libthr/thread/thr_cond.c Sun Aug 12 00:56:56 2012
(r239206)
@@ -239,6 +239,7 @@ cond_wait_user(struct pthread_cond *cvp,
_thr_clear_wake(curthread);
_sleepq_unlock(cvp);
if (defered) {
+ defered = 0;
if ((mp->m_lock.m_owner & UMUTEX_CONTESTED) == 0)
(void)_umtx_op_err(&mp->m_lock,
UMTX_OP_MUTEX_WAKE2,
mp->m_lock.m_flags, 0, 0);
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