Lines Matching defs:lc

64  * localcount_init(lc)
70  *	when done with lc.
73 localcount_init(struct localcount *lc)
76 	lc->lc_totalp = NULL;
77 	lc->lc_percpu = percpu_alloc(sizeof(int64_t));
81  * localcount_drain(lc, cv, interlock)
83  *	Wait for all acquired references to lc to drain.  Caller must
86  *	same as are passed to localcount_release for this lc.
93  *	The localcount object lc may be used only with localcount_fini
98 localcount_drain(struct localcount *lc, kcondvar_t *cv, kmutex_t *interlock)
103 	KASSERT(lc->lc_totalp == NULL);
106 	lc->lc_totalp = &total;
112 	 * CPUs will have witnessed the nonnull value of lc->lc_totalp,
116 	xc_wait(xc_broadcast(0, &localcount_xc, lc, interlock));
128 		    lc, total);
132 	/* Paranoia: Cause any further use of lc->lc_totalp to crash.  */
133 	lc->lc_totalp = (void *)(uintptr_t)1;
137  * localcount_fini(lc)
143 localcount_fini(struct localcount *lc)
146 	KASSERT(lc->lc_totalp == (void *)(uintptr_t)1);
147 	percpu_free(lc->lc_percpu, sizeof(uint64_t));
161 	struct localcount *lc = cookie0;
167 	localp = percpu_getref(lc->lc_percpu);
169 	*lc->lc_totalp += *localp;
172 	percpu_putref(lc->lc_percpu);
177  * localcount_adjust(lc, delta)
180  *	for lc.
183 localcount_adjust(struct localcount *lc, int delta)
188 	localp = percpu_getref(lc->lc_percpu);
192 	percpu_putref(lc->lc_percpu);
196  * localcount_acquire(lc)
198  *	Acquire a reference to lc.
216 localcount_acquire(struct localcount *lc)
219 	KASSERT(lc->lc_totalp == NULL);
220 	localcount_adjust(lc, +1);
222 	if (atomic_inc_32_nv(&lc->lc_refcnt) == 0)
228  * localcount_release(lc, cv, interlock)
230  *	Release a reference to lc.  If there is a concurrent
234  *	the same as are passed to localcount_drain for this lc.
240 localcount_release(struct localcount *lc, kcondvar_t *cv, kmutex_t *interlock)
245 	 * lc->lc_totalp as null, then they won't start cv_wait until
250 	 * lc->lc_totalp as null, this CPU will not wake
256 	if (__predict_false(lc->lc_totalp != NULL)) {
262 		if (--*lc->lc_totalp == 0)
268 	localcount_adjust(lc, -1);
270 	if (atomic_dec_32_nv(&lc->lc_refcnt) == UINT_MAX)
277  * localcount_debug_refcnt(lc)
279  *	Return a total reference count of lc.  It returns a correct value
283 localcount_debug_refcnt(const struct localcount *lc)
287 	return lc->lc_refcnt;