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fix deadlock in condition wait whenever there are multiple waiters

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it's amazing none of the conformance tests i've run even bothered to
check whether something so basic works...
This commit is contained in:
Rich Felker
2011-09-22 21:08:55 -04:00
parent 2eff02e4a0
commit 4b153ac424
4 changed files with 18 additions and 5 deletions
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3
src/thread/pthread_cond_broadcast.c
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@ -2,7 +2,8 @@
int pthread_cond_broadcast(pthread_cond_t *c)
{
if (a_swap(&c->_c_block, 0))
int w = c->_c_waiters;
if (a_swap(&c->_c_block, 0) || w)
__wake(&c->_c_block, -1, 0);
return 0;
}