51 zrl_init(zrlock_t *zrl)  in zrl_init()  argument
53 	mutex_init(&zrl->zr_mtx, NULL, MUTEX_DEFAULT, NULL);  in zrl_init()
54 	zrl->zr_refcount = 0;  in zrl_init()
55 	cv_init(&zrl->zr_cv, NULL, CV_DEFAULT, NULL);  in zrl_init()
57 	zrl->zr_owner = NULL;  in zrl_init()
58 	zrl->zr_caller = NULL;  in zrl_init()
63 zrl_destroy(zrlock_t *zrl)  in zrl_destroy()  argument
65 	ASSERT0(zrl->zr_refcount);  in zrl_destroy()
67 	mutex_destroy(&zrl->zr_mtx);  in zrl_destroy()
68 	zrl->zr_refcount = ZRL_DESTROYED;  in zrl_destroy()
69 	cv_destroy(&zrl->zr_cv);  in zrl_destroy()
73 zrl_add_impl(zrlock_t *zrl, const char *zc)  in zrl_add_impl()  argument
76 		uint32_t n = (uint32_t)zrl->zr_refcount;  in zrl_add_impl()
79 			    (uint32_t *)&zrl->zr_refcount, n, n + 1);  in zrl_add_impl()
83 				if (zrl->zr_owner == curthread) {  in zrl_add_impl()
85 					    zrlock_t *, zrl, uint32_t, n);  in zrl_add_impl()
87 				zrl->zr_owner = curthread;  in zrl_add_impl()
88 				zrl->zr_caller = zc;  in zrl_add_impl()
95 		mutex_enter(&zrl->zr_mtx);  in zrl_add_impl()
96 		while (zrl->zr_refcount == ZRL_LOCKED) {  in zrl_add_impl()
97 			cv_wait(&zrl->zr_cv, &zrl->zr_mtx);  in zrl_add_impl()
99 		mutex_exit(&zrl->zr_mtx);  in zrl_add_impl()
104 zrl_remove(zrlock_t *zrl)  in zrl_remove()  argument
109 	if (zrl->zr_owner == curthread) {  in zrl_remove()
110 		zrl->zr_owner = NULL;  in zrl_remove()
111 		zrl->zr_caller = NULL;  in zrl_remove()
114 	n = atomic_dec_32_nv((uint32_t *)&zrl->zr_refcount);  in zrl_remove()
119 zrl_tryenter(zrlock_t *zrl)  in zrl_tryenter()  argument
121 	uint32_t n = (uint32_t)zrl->zr_refcount;  in zrl_tryenter()
125 		    (uint32_t *)&zrl->zr_refcount, 0, ZRL_LOCKED);  in zrl_tryenter()
128 			ASSERT3P(zrl->zr_owner, ==, NULL);  in zrl_tryenter()
129 			zrl->zr_owner = curthread;  in zrl_tryenter()
141 zrl_exit(zrlock_t *zrl)  in zrl_exit()  argument
143 	ASSERT3S(zrl->zr_refcount, ==, ZRL_LOCKED);  in zrl_exit()
145 	mutex_enter(&zrl->zr_mtx);  in zrl_exit()
147 	ASSERT3P(zrl->zr_owner, ==, curthread);  in zrl_exit()
148 	zrl->zr_owner = NULL;  in zrl_exit()
151 	zrl->zr_refcount = 0;  in zrl_exit()
152 	cv_broadcast(&zrl->zr_cv);  in zrl_exit()
153 	mutex_exit(&zrl->zr_mtx);  in zrl_exit()
157 zrl_refcount(zrlock_t *zrl)  in zrl_refcount()  argument
159 	ASSERT3S(zrl->zr_refcount, >, ZRL_DESTROYED);  in zrl_refcount()
161 	int n = (int)zrl->zr_refcount;  in zrl_refcount()
166 zrl_is_zero(zrlock_t *zrl)  in zrl_is_zero()  argument
168 	ASSERT3S(zrl->zr_refcount, >, ZRL_DESTROYED);  in zrl_is_zero()
170 	return (zrl->zr_refcount <= 0);  in zrl_is_zero()
174 zrl_is_locked(zrlock_t *zrl)  in zrl_is_locked()  argument
176 	ASSERT3S(zrl->zr_refcount, >, ZRL_DESTROYED);  in zrl_is_locked()
178 	return (zrl->zr_refcount == ZRL_LOCKED);  in zrl_is_locked()
183 zrl_owner(zrlock_t *zrl)  in zrl_owner()  argument
185 	return (zrl->zr_owner);  in zrl_owner()