nsz Git - musl/blob - pthread_rwlock_trywrlock.c

   1 #include "pthread_impl.h"
   2
   3 int pthread_rwlock_trywrlock(pthread_rwlock_t *rw)
   4 {
   5         if (a_cas(&rw->_rw_lock, 0, 0x7fffffff)) return EBUSY;
   6         return 0;
   7 }