53 zrl_init(zrlock_t *zrl)  in zrl_init()  argument
55 	mutex_init(&zrl->zr_mtx, NULL, MUTEX_DEFAULT, NULL);  in zrl_init()
56 	zrl->zr_refcount = 0;  in zrl_init()
57 	cv_init(&zrl->zr_cv, NULL, CV_DEFAULT, NULL);  in zrl_init()
59 	zrl->zr_owner = NULL;  in zrl_init()
60 	zrl->zr_caller = NULL;  in zrl_init()
65 zrl_destroy(zrlock_t *zrl)  in zrl_destroy()  argument
67 	ASSERT0(zrl->zr_refcount);  in zrl_destroy()
69 	mutex_destroy(&zrl->zr_mtx);  in zrl_destroy()
70 	zrl->zr_refcount = ZRL_DESTROYED;  in zrl_destroy()
71 	cv_destroy(&zrl->zr_cv);  in zrl_destroy()
75 zrl_add_impl(zrlock_t *zrl, const char *zc)  in zrl_add_impl()  argument
78 		uint32_t n = (uint32_t)zrl->zr_refcount;  in zrl_add_impl()
81 			    (uint32_t *)&zrl->zr_refcount, n, n + 1);  in zrl_add_impl()
85 				if (zrl->zr_owner == curthread) {  in zrl_add_impl()
87 					    zrlock_t *, zrl,  in zrl_add_impl()
91 				zrl->zr_owner = curthread;  in zrl_add_impl()
92 				zrl->zr_caller = zc;  in zrl_add_impl()
99 		mutex_enter(&zrl->zr_mtx);  in zrl_add_impl()
100 		while (zrl->zr_refcount == ZRL_LOCKED) {  in zrl_add_impl()
101 			cv_wait(&zrl->zr_cv, &zrl->zr_mtx);  in zrl_add_impl()
103 		mutex_exit(&zrl->zr_mtx);  in zrl_add_impl()
108 zrl_remove(zrlock_t *zrl)  in zrl_remove()  argument
111 	if (zrl->zr_owner == curthread) {  in zrl_remove()
112 		zrl->zr_owner = NULL;  in zrl_remove()
113 		zrl->zr_caller = NULL;  in zrl_remove()
115 	int32_t n = atomic_dec_32_nv((uint32_t *)&zrl->zr_refcount);  in zrl_remove()
118 	atomic_dec_32((uint32_t *)&zrl->zr_refcount);  in zrl_remove()
123 zrl_tryenter(zrlock_t *zrl)  in zrl_tryenter()  argument
125 	uint32_t n = (uint32_t)zrl->zr_refcount;  in zrl_tryenter()
129 		    (uint32_t *)&zrl->zr_refcount, 0, ZRL_LOCKED);  in zrl_tryenter()
132 			ASSERT3P(zrl->zr_owner, ==, NULL);  in zrl_tryenter()
133 			zrl->zr_owner = curthread;  in zrl_tryenter()
145 zrl_exit(zrlock_t *zrl)  in zrl_exit()  argument
147 	ASSERT3S(zrl->zr_refcount, ==, ZRL_LOCKED);  in zrl_exit()
149 	mutex_enter(&zrl->zr_mtx);  in zrl_exit()
151 	ASSERT3P(zrl->zr_owner, ==, curthread);  in zrl_exit()
152 	zrl->zr_owner = NULL;  in zrl_exit()
155 	zrl->zr_refcount = 0;  in zrl_exit()
156 	cv_broadcast(&zrl->zr_cv);  in zrl_exit()
157 	mutex_exit(&zrl->zr_mtx);  in zrl_exit()
161 zrl_is_zero(zrlock_t *zrl)  in zrl_is_zero()  argument
163 	ASSERT3S(zrl->zr_refcount, >, ZRL_DESTROYED);  in zrl_is_zero()
165 	return (zrl->zr_refcount <= 0);  in zrl_is_zero()
169 zrl_is_locked(zrlock_t *zrl)  in zrl_is_locked()  argument
171 	ASSERT3S(zrl->zr_refcount, >, ZRL_DESTROYED);  in zrl_is_locked()
173 	return (zrl->zr_refcount == ZRL_LOCKED);  in zrl_is_locked()
178 zrl_owner(zrlock_t *zrl)  in zrl_owner()  argument
180 	return (zrl->zr_owner);  in zrl_owner()