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Do defered mutex wakeup once.

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This commit is contained in:
David Xu 2012-08-12 00:56:56 +00:00
parent 1762ec944a
commit aa75bc577a
1 changed files with 1 additions and 0 deletions
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lib/libthr/thread/thr_cond.c
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@ -239,6 +239,7 @@ cond_wait_user(struct pthread_cond *cvp, struct pthread_mutex *mp,
_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);