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Resolve a deadlock caused by not checking mutex state after calling `SCM_TICK'.

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Signed-off-by: Ludovic Courtès <ludo@gnu.org>
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Julian Graham 2008-09-06 20:06:17 -04:00 • committed by Ludovic Courtès
parent 77554491e1
commit 1eb4952693
2 changed files with 6 additions and 1 deletions
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5
libguile/ChangeLog
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@ -1,3 +1,8 @@
2008-09-06 Julian Graham <joolean@gmail.com>
* threads.c (fat_mutex_lock): Resolve a deadlock caused by not
checking mutex state after calling `SCM_TICK'.
2008-08-20 Ludovic Courtès <ludo@gnu.org>
* eval.c, filesys.c, gc.c, numbers.c, posix.c, srfi-14.c,

2
libguile/threads.c
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@ -1030,9 +1030,9 @@ fat_mutex_lock (SCM mutex)
{
while (1)
{
block_self (m->waiting, mutex, &m->lock, NULL);
if (scm_is_eq (m->owner, thread))
break;
block_self (m->waiting, mutex, &m->lock, NULL);
scm_i_pthread_mutex_unlock (&m->lock);
SCM_TICK;
scm_i_scm_pthread_mutex_lock (&m->lock);