try_rwlock_rdlock
error = try_rwlock_rdlock(msqid, msqpptr);
error = try_rwlock_rdlock(msqid, msqpptr);
error = try_rwlock_rdlock(semid, semaptr);
error = try_rwlock_rdlock(semid, semaptr);
error = try_rwlock_rdlock(semid, semaptr);
error = try_rwlock_rdlock(semid, semaptr);
error = try_rwlock_rdlock(semid, semaptr);
error = try_rwlock_rdlock(semid, semaptr);
if (try_rwlock_rdlock(semid, semaptr) == -1) {
if (try_rwlock_rdlock(semid, semaptr) == -1) {