LOP_TRYLOCK
(LK_TRYOP(x) ? LOP_TRYLOCK : 0)
WITNESS_LOCK(&m->lock_object, opts | LOP_EXCLUSIVE | LOP_TRYLOCK,
WITNESS_UPGRADE(&rw->lock_object, LOP_EXCLUSIVE | LOP_TRYLOCK,
WITNESS_LOCK(&rw->lock_object, LOP_EXCLUSIVE | LOP_TRYLOCK,
WITNESS_LOCK(&rw->lock_object, LOP_TRYLOCK, file, line);
WITNESS_LOCK(&sx->lock_object, LOP_TRYLOCK, file, line);
WITNESS_LOCK(&sx->lock_object, LOP_EXCLUSIVE | LOP_TRYLOCK,
WITNESS_UPGRADE(&sx->lock_object, LOP_EXCLUSIVE | LOP_TRYLOCK,