#include "pthread_impl.h" int __pthread_rwlock_tryrdlock(pthread_rwlock_t *rw) { if (rw->_rw_lock == 0x7fffffff) return EBUSY; if (rw->_rw_lock == 0x7ffffffe) return EAGAIN; rw->_rw_lock++; return 0; } weak_alias(__pthread_rwlock_tryrdlock, pthread_rwlock_tryrdlock);