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fc1d5328a787dc6df63db2cc265227c795e9b394
[musl]
/
pthread_rwlock_tryrdlock.c
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#include "pthread_impl.h"
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int pthread_rwlock_tryrdlock(pthread_rwlock_t *rw)
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{
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a_inc(&rw->_rw_readers);
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if (rw->_rw_wrlock) {
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a_dec(&rw->_rw_readers);
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if (rw->_rw_waiters && !rw->_rw_readers)
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__wake(&rw->_rw_readers, 1, 0);
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return EAGAIN;
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}
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return 0;
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}