pthread_rwlock_trywrlock.c raw

   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  }
   8  
   9  weak_alias(__pthread_rwlock_trywrlock, pthread_rwlock_trywrlock);
  10