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Always clear flag PMUTEX_FLAG_DEFERED when unlocking, as it is only

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significant for lock owner.
This commit is contained in:
David Xu 2010-12-24 07:41:39 +00:00
parent 5f523ccd1c
commit e29ba4c2db
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=216687
1 changed files with 2 additions and 2 deletions
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4
lib/libthr/thread/thr_mutex.c
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@ -653,7 +653,7 @@ mutex_unlock_common(struct pthread_mutex *m, int cv)
m->m_count > 0)) {
m->m_count--;
} else {
if (curthread->will_sleep == 0 && (m->m_flags & PMUTEX_FLAG_DEFERED) != 0) {
if ((m->m_flags & PMUTEX_FLAG_DEFERED) != 0) {
defered = 1;
m->m_flags &= ~PMUTEX_FLAG_DEFERED;
} else
@ -662,7 +662,7 @@ mutex_unlock_common(struct pthread_mutex *m, int cv)
DEQUEUE_MUTEX(curthread, m);
_thr_umutex_unlock(&m->m_lock, id);
if (defered) {
if (curthread->will_sleep == 0 && defered) {
_thr_wake_all(curthread->defer_waiters,
curthread->nwaiter_defer);
curthread->nwaiter_defer = 0;