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Unlocked mutexes don't have owners

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* libguile/threads.c (scm_unlock_mutex)
  (scm_timed_wait_condition_variable): Unlocked mutexes should never
  have owners.
This commit is contained in:
Andy Wingo 2016-11-13 12:43:46 +01:00
parent 4110e7bbb1
commit 1ed9dea34a
1 changed files with 10 additions and 4 deletions
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14
libguile/threads.c
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@ -1268,8 +1268,11 @@ SCM_DEFINE (scm_unlock_mutex, "unlock-mutex", 1, 0, 0, (SCM mutex),
if (m->level > 0)
m->level--;
if (m->level == 0)
/* Change the owner of MUTEX. */
m->owner = unblock_from_queue (m->waiting);
/* Wake up one waiter. */
{
m->owner = SCM_BOOL_F;
unblock_from_queue (m->waiting);
}
scm_i_pthread_mutex_unlock (&m->lock);
@ -1414,8 +1417,11 @@ SCM_DEFINE (scm_timed_wait_condition_variable, "wait-condition-variable", 2, 1,
if (m->level > 0)
m->level--;
if (m->level == 0)
/* Change the owner of MUTEX. */
m->owner = unblock_from_queue (m->waiting);
{
m->owner = SCM_BOOL_F;
/* Wake up one waiter. */
unblock_from_queue (m->waiting);
}
t->block_asyncs++;