94 task_alloc(taskq_t *tq, int tqflags)  in task_alloc()  argument
99 again:	if ((t = tq->tq_freelist) != NULL && tq->tq_nalloc >= tq->tq_minalloc) {  in task_alloc()
100 		tq->tq_freelist = t->tqent_next;  in task_alloc()
102 		if (tq->tq_nalloc >= tq->tq_maxalloc) {  in task_alloc()
116 			tq->tq_maxalloc_wait++;  in task_alloc()
117 			rv = cv_timedwait(&tq->tq_maxalloc_cv,  in task_alloc()
118 			    &tq->tq_lock, ddi_get_lbolt() + hz);  in task_alloc()
119 			tq->tq_maxalloc_wait--;  in task_alloc()
123 		mutex_exit(&tq->tq_lock);  in task_alloc()
127 		mutex_enter(&tq->tq_lock);  in task_alloc()
129 			tq->tq_nalloc++;  in task_alloc()
135 task_free(taskq_t *tq, taskq_ent_t *t)  in task_free()  argument
137 	if (tq->tq_nalloc <= tq->tq_minalloc) {  in task_free()
138 		t->tqent_next = tq->tq_freelist;  in task_free()
139 		tq->tq_freelist = t;  in task_free()
141 		tq->tq_nalloc--;  in task_free()
142 		mutex_exit(&tq->tq_lock);  in task_free()
144 		mutex_enter(&tq->tq_lock);  in task_free()
147 	if (tq->tq_maxalloc_wait)  in task_free()
148 		cv_signal(&tq->tq_maxalloc_cv);  in task_free()
152 taskq_dispatch(taskq_t *tq, task_func_t func, void *arg, uint_t tqflags)  in taskq_dispatch()  argument
161 	mutex_enter(&tq->tq_lock);  in taskq_dispatch()
162 	ASSERT(tq->tq_flags & TASKQ_ACTIVE);  in taskq_dispatch()
163 	if ((t = task_alloc(tq, tqflags)) == NULL) {  in taskq_dispatch()
164 		mutex_exit(&tq->tq_lock);  in taskq_dispatch()
168 		t->tqent_next = tq->tq_task.tqent_next;  in taskq_dispatch()
169 		t->tqent_prev = &tq->tq_task;  in taskq_dispatch()
171 		t->tqent_next = &tq->tq_task;  in taskq_dispatch()
172 		t->tqent_prev = tq->tq_task.tqent_prev;  in taskq_dispatch()
179 	cv_signal(&tq->tq_dispatch_cv);  in taskq_dispatch()
180 	mutex_exit(&tq->tq_lock);  in taskq_dispatch()
185 taskq_dispatch_ent(taskq_t *tq, task_func_t func, void *arg, uint_t flags,  in taskq_dispatch_ent()  argument
189 	ASSERT(!(tq->tq_flags & TASKQ_DYNAMIC));  in taskq_dispatch_ent()
199 	mutex_enter(&tq->tq_lock);  in taskq_dispatch_ent()
202 		t->tqent_next = tq->tq_task.tqent_next;  in taskq_dispatch_ent()
203 		t->tqent_prev = &tq->tq_task;  in taskq_dispatch_ent()
205 		t->tqent_next = &tq->tq_task;  in taskq_dispatch_ent()
206 		t->tqent_prev = tq->tq_task.tqent_prev;  in taskq_dispatch_ent()
212 	cv_signal(&tq->tq_dispatch_cv);  in taskq_dispatch_ent()
213 	mutex_exit(&tq->tq_lock);  in taskq_dispatch_ent()
217 taskq_empty(taskq_t *tq)  in taskq_empty()  argument
221 	mutex_enter(&tq->tq_lock);  in taskq_empty()
222 	rv = (tq->tq_task.tqent_next == &tq->tq_task) && (tq->tq_active == 0);  in taskq_empty()
223 	mutex_exit(&tq->tq_lock);  in taskq_empty()
229 taskq_wait(taskq_t *tq)  in taskq_wait()  argument
231 	mutex_enter(&tq->tq_lock);  in taskq_wait()
232 	while (tq->tq_task.tqent_next != &tq->tq_task || tq->tq_active != 0)  in taskq_wait()
233 		cv_wait(&tq->tq_wait_cv, &tq->tq_lock);  in taskq_wait()
234 	mutex_exit(&tq->tq_lock);  in taskq_wait()
238 taskq_wait_id(taskq_t *tq, taskqid_t id __unused)  in taskq_wait_id()  argument
240 	taskq_wait(tq);  in taskq_wait_id()
246 	taskq_t *tq = arg;  in taskq_thread()  local
250 	mutex_enter(&tq->tq_lock);  in taskq_thread()
251 	while (tq->tq_flags & TASKQ_ACTIVE) {  in taskq_thread()
252 		if ((t = tq->tq_task.tqent_next) == &tq->tq_task) {  in taskq_thread()
253 			if (--tq->tq_active == 0)  in taskq_thread()
254 				cv_broadcast(&tq->tq_wait_cv);  in taskq_thread()
255 			cv_wait(&tq->tq_dispatch_cv, &tq->tq_lock);  in taskq_thread()
256 			tq->tq_active++;  in taskq_thread()
264 		mutex_exit(&tq->tq_lock);  in taskq_thread()
266 		rw_enter(&tq->tq_threadlock, RW_READER);  in taskq_thread()
268 		rw_exit(&tq->tq_threadlock);  in taskq_thread()
270 		mutex_enter(&tq->tq_lock);  in taskq_thread()
272 			task_free(tq, t);  in taskq_thread()
274 	tq->tq_nthreads--;  in taskq_thread()
275 	cv_broadcast(&tq->tq_wait_cv);  in taskq_thread()
276 	mutex_exit(&tq->tq_lock);  in taskq_thread()
303 	taskq_t *tq = kmem_zalloc(sizeof (taskq_t), KM_SLEEP);  in taskq_create_proc()  local
319 	rw_init(&tq->tq_threadlock, NULL, RW_DEFAULT, NULL);  in taskq_create_proc()
320 	mutex_init(&tq->tq_lock, NULL, MUTEX_DEFAULT, NULL);  in taskq_create_proc()
321 	cv_init(&tq->tq_dispatch_cv, NULL, CV_DEFAULT, NULL);  in taskq_create_proc()
322 	cv_init(&tq->tq_wait_cv, NULL, CV_DEFAULT, NULL);  in taskq_create_proc()
323 	cv_init(&tq->tq_maxalloc_cv, NULL, CV_DEFAULT, NULL);  in taskq_create_proc()
324 	tq->tq_flags = flags | TASKQ_ACTIVE;  in taskq_create_proc()
325 	tq->tq_active = nthreads;  in taskq_create_proc()
326 	tq->tq_nthreads = nthreads;  in taskq_create_proc()
327 	tq->tq_minalloc = minalloc;  in taskq_create_proc()
328 	tq->tq_maxalloc = maxalloc;  in taskq_create_proc()
329 	tq->tq_task.tqent_next = &tq->tq_task;  in taskq_create_proc()
330 	tq->tq_task.tqent_prev = &tq->tq_task;  in taskq_create_proc()
331 	tq->tq_threadlist = kmem_alloc(nthreads * sizeof (thread_t), KM_SLEEP);  in taskq_create_proc()
334 		mutex_enter(&tq->tq_lock);  in taskq_create_proc()
336 			task_free(tq, task_alloc(tq, KM_SLEEP));  in taskq_create_proc()
337 		mutex_exit(&tq->tq_lock);  in taskq_create_proc()
342 		    tq, THR_BOUND, &tq->tq_threadlist[t]);  in taskq_create_proc()
344 	return (tq);  in taskq_create_proc()
348 taskq_destroy(taskq_t *tq)  in taskq_destroy()  argument
351 	int nthreads = tq->tq_nthreads;  in taskq_destroy()
353 	taskq_wait(tq);  in taskq_destroy()
355 	mutex_enter(&tq->tq_lock);  in taskq_destroy()
357 	tq->tq_flags &= ~TASKQ_ACTIVE;  in taskq_destroy()
358 	cv_broadcast(&tq->tq_dispatch_cv);  in taskq_destroy()
360 	while (tq->tq_nthreads != 0)  in taskq_destroy()
361 		cv_wait(&tq->tq_wait_cv, &tq->tq_lock);  in taskq_destroy()
363 	tq->tq_minalloc = 0;  in taskq_destroy()
364 	while (tq->tq_nalloc != 0) {  in taskq_destroy()
365 		ASSERT(tq->tq_freelist != NULL);  in taskq_destroy()
366 		task_free(tq, task_alloc(tq, KM_SLEEP));  in taskq_destroy()
369 	mutex_exit(&tq->tq_lock);  in taskq_destroy()
372 		(void) thr_join(tq->tq_threadlist[t], NULL, NULL);  in taskq_destroy()
374 	kmem_free(tq->tq_threadlist, nthreads * sizeof (thread_t));  in taskq_destroy()
376 	rw_destroy(&tq->tq_threadlock);  in taskq_destroy()
377 	mutex_destroy(&tq->tq_lock);  in taskq_destroy()
378 	cv_destroy(&tq->tq_dispatch_cv);  in taskq_destroy()
379 	cv_destroy(&tq->tq_wait_cv);  in taskq_destroy()
380 	cv_destroy(&tq->tq_maxalloc_cv);  in taskq_destroy()
382 	kmem_free(tq, sizeof (taskq_t));  in taskq_destroy()
386 taskq_member(taskq_t *tq, struct _kthread *t)  in taskq_member()  argument
393 	for (i = 0; i < tq->tq_nthreads; i++)  in taskq_member()
394 		if (tq->tq_threadlist[i] == (thread_t)(uintptr_t)t)  in taskq_member()