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Make code more stable by checking NULL pointers.

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This commit is contained in:
David Xu 2012-02-11 04:12:12 +00:00
parent b098345b9e
commit 4c91ddd690
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=231503
1 changed files with 6 additions and 2 deletions
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8
lib/libthr/thread/thr_list.c
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@ -154,8 +154,12 @@ _thr_alloc(struct pthread *curthread)
atomic_fetchadd_int(&total_threads, -1);
return (NULL);
}
thread->sleepqueue = _sleepq_alloc();
thread->wake_addr = _thr_alloc_wake_addr();
if ((thread->sleepqueue = _sleepq_alloc()) == NULL ||
(thread->wake_addr = _thr_alloc_wake_addr()) == NULL) {
thr_destroy(curthread, thread);
atomic_fetchadd_int(&total_threads, -1);
return (NULL);
}
} else {
bzero(&thread->_pthread_startzero,
__rangeof(struct pthread, _pthread_startzero, _pthread_endzero));