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correctly handle the degenerate barrier in the pshared case

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Rich Felker
2011-09-27 23:08:59 -04:00
parent 3ac092bd7d
commit 067bdc2c18
1 changed files with 1 additions and 1 deletions
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2
src/thread/pthread_barrier_wait.c
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@ -24,7 +24,7 @@ static int pshared_barrier_wait(pthread_barrier_t *b)
int seq; int seq;
int ret = 0; int ret = 0;
if (!limit) return PTHREAD_BARRIER_SERIAL_THREAD; if (limit==1) return PTHREAD_BARRIER_SERIAL_THREAD;
while (a_swap(&b->_b_lock, 1)) while (a_swap(&b->_b_lock, 1))
__wait(&b->_b_lock, &b->_b_waiters, 1, 0); __wait(&b->_b_lock, &b->_b_waiters, 1, 0);