rw_lock_wait
status_t status = rw_lock_wait(lock, false, locker);
status_t status = rw_lock_wait(lock, true, locker);
return rw_lock_wait(lock, false);
status_t result = rw_lock_wait(lock, true);
return rw_lock_wait(lock, false);
status_t status = rw_lock_wait(lock, true);