50 zrl_init(zrlock_t *zrl)  in zrl_init()  argument
52 	mutex_init(&zrl->zr_mtx, NULL, MUTEX_DEFAULT, NULL);  in zrl_init()
53 	zrl->zr_refcount = 0;  in zrl_init()
54 	cv_init(&zrl->zr_cv, NULL, CV_DEFAULT, NULL);  in zrl_init()
56 	zrl->zr_owner = NULL;  in zrl_init()
57 	zrl->zr_caller = NULL;  in zrl_init()
62 zrl_destroy(zrlock_t *zrl)  in zrl_destroy()  argument
64 	ASSERT0(zrl->zr_refcount);  in zrl_destroy()
66 	mutex_destroy(&zrl->zr_mtx);  in zrl_destroy()
67 	zrl->zr_refcount = ZRL_DESTROYED;  in zrl_destroy()
68 	cv_destroy(&zrl->zr_cv);  in zrl_destroy()
72 zrl_add_impl(zrlock_t *zrl, const char *zc)  in zrl_add_impl()  argument
74 	uint32_t n = (uint32_t)zrl->zr_refcount;  in zrl_add_impl()
78 		    (uint32_t *)&zrl->zr_refcount, n, n + 1);  in zrl_add_impl()
82 			if (zrl->zr_owner == curthread) {  in zrl_add_impl()
84 				    zrlock_t *, zrl, uint32_t, n);  in zrl_add_impl()
86 			zrl->zr_owner = curthread;  in zrl_add_impl()
87 			zrl->zr_caller = zc;  in zrl_add_impl()
94 	mutex_enter(&zrl->zr_mtx);  in zrl_add_impl()
95 	while (zrl->zr_refcount == ZRL_LOCKED) {  in zrl_add_impl()
96 		cv_wait(&zrl->zr_cv, &zrl->zr_mtx);  in zrl_add_impl()
98 	ASSERT3S(zrl->zr_refcount, >=, 0);  in zrl_add_impl()
99 	zrl->zr_refcount++;  in zrl_add_impl()
101 	zrl->zr_owner = curthread;  in zrl_add_impl()
102 	zrl->zr_caller = zc;  in zrl_add_impl()
104 	mutex_exit(&zrl->zr_mtx);  in zrl_add_impl()
108 zrl_remove(zrlock_t *zrl)  in zrl_remove()  argument
113 	if (zrl->zr_owner == curthread) {  in zrl_remove()
114 		zrl->zr_owner = NULL;  in zrl_remove()
115 		zrl->zr_caller = NULL;  in zrl_remove()
118 	n = atomic_dec_32_nv((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_refcount(zrlock_t *zrl)  in zrl_refcount()  argument
163 	ASSERT3S(zrl->zr_refcount, >, ZRL_DESTROYED);  in zrl_refcount()
165 	int n = (int)zrl->zr_refcount;  in zrl_refcount()
170 zrl_is_zero(zrlock_t *zrl)  in zrl_is_zero()  argument
172 	ASSERT3S(zrl->zr_refcount, >, ZRL_DESTROYED);  in zrl_is_zero()
174 	return (zrl->zr_refcount <= 0);  in zrl_is_zero()
178 zrl_is_locked(zrlock_t *zrl)  in zrl_is_locked()  argument
180 	ASSERT3S(zrl->zr_refcount, >, ZRL_DESTROYED);  in zrl_is_locked()
182 	return (zrl->zr_refcount == ZRL_LOCKED);  in zrl_is_locked()
187 zrl_owner(zrlock_t *zrl)  in zrl_owner()  argument
189 	return (zrl->zr_owner);  in zrl_owner()