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* thread.c (rb_mutex_unlock_th): simplified.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34294 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2012-01-13 09:29:13 +00:00
parent 8032371462
commit 6b1bae9641
2 changed files with 7 additions and 16 deletions
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4
ChangeLog
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@ -1,4 +1,6 @@
Fri Jan 13 18:25:49 2012 Nobuyoshi Nakada <nobu@ruby-lang.org>
Fri Jan 13 18:29:06 2012 Nobuyoshi Nakada <nobu@ruby-lang.org>
* thread.c (rb_mutex_unlock_th): simplified.
* thread.c (rb_barrier_waiting): fix potential overflows.

19
thread.c
View file

@ -3523,7 +3523,6 @@ static const char *
rb_mutex_unlock_th(rb_mutex_t *mutex, rb_thread_t volatile *th)
{
const char *err = NULL;
rb_mutex_t *th_mutex;
native_mutex_lock(&mutex->lock);
@ -3542,21 +3541,11 @@ rb_mutex_unlock_th(rb_mutex_t *mutex, rb_thread_t volatile *th)
native_mutex_unlock(&mutex->lock);
if (!err) {
th_mutex = th->keeping_mutexes;
if (th_mutex == mutex) {
th->keeping_mutexes = mutex->next_mutex;
}
else {
while (1) {
rb_mutex_t *tmp_mutex;
tmp_mutex = th_mutex->next_mutex;
if (tmp_mutex == mutex) {
th_mutex->next_mutex = tmp_mutex->next_mutex;
break;
}
th_mutex = tmp_mutex;
}
rb_mutex_t *volatile *th_mutex = &th->keeping_mutexes;
while (*th_mutex != mutex) {
th_mutex = &(*th_mutex)->next_mutex;
}
*th_mutex = mutex->next_mutex;
mutex->next_mutex = NULL;
}