1 #include "pthread_impl.h"
3 int __pthread_rwlock_tryrdlock(pthread_rwlock_t *rw)
8 cnt = val & 0x7fffffff;
9 if (cnt == 0x7fffffff) return EBUSY;
10 if (cnt == 0x7ffffffe) return EAGAIN;
11 } while (a_cas(&rw->_rw_lock, val, val+1) != val);
15 weak_alias(__pthread_rwlock_tryrdlock, pthread_rwlock_tryrdlock);