ea8df6fcea
replace it with wrappers around our taskqueue(9). To make it possible implement taskqueue_member() function which returns 1 if the given thread was created by the given taskqueue. Approved by: re (kib)
136 lines
3.5 KiB
C
136 lines
3.5 KiB
C
/*-
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* Copyright (c) 2009 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/kmem.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/queue.h>
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#include <sys/taskqueue.h>
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#include <sys/taskq.h>
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#include <vm/uma.h>
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static uma_zone_t taskq_zone;
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struct ostask {
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struct task ost_task;
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task_func_t *ost_func;
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void *ost_arg;
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};
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taskq_t *system_taskq = NULL;
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static void
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system_taskq_init(void *arg)
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{
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system_taskq = (taskq_t *)taskqueue_thread;
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taskq_zone = uma_zcreate("taskq_zone", sizeof(struct ostask),
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NULL, NULL, NULL, NULL, 0, 0);
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}
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SYSINIT(system_taskq_init, SI_SUB_CONFIGURE, SI_ORDER_ANY, system_taskq_init, NULL);
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static void
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system_taskq_fini(void *arg)
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{
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uma_zdestroy(taskq_zone);
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}
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SYSUNINIT(system_taskq_fini, SI_SUB_CONFIGURE, SI_ORDER_ANY, system_taskq_fini, NULL);
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taskq_t *
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taskq_create(const char *name, int nthreads, pri_t pri, int minalloc __unused,
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int maxalloc __unused, uint_t flags)
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{
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taskq_t *tq;
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if ((flags & TASKQ_THREADS_CPU_PCT) != 0) {
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/* TODO: Calculate number od threads. */
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printf("%s: TASKQ_THREADS_CPU_PCT\n", __func__);
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}
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tq = kmem_alloc(sizeof(*tq), KM_SLEEP);
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tq->tq_queue = taskqueue_create(name, M_WAITOK, taskqueue_thread_enqueue,
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&tq->tq_queue);
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(void) taskqueue_start_threads(&tq->tq_queue, nthreads, pri, name);
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return ((taskq_t *)tq);
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}
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void
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taskq_destroy(taskq_t *tq)
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{
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taskqueue_free(tq->tq_queue);
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kmem_free(tq, sizeof(*tq));
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}
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int
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taskq_member(taskq_t *tq, kthread_t *thread)
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{
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return (taskqueue_member(tq->tq_queue, thread));
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}
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static void
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taskq_run(void *arg, int pending __unused)
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{
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struct ostask *task = arg;
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task->ost_func(task->ost_arg);
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uma_zfree(taskq_zone, task);
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}
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taskqid_t
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taskq_dispatch(taskq_t *tq, task_func_t func, void *arg, uint_t flags)
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{
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struct ostask *task;
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int mflag;
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if ((flags & (TQ_SLEEP | TQ_NOQUEUE)) == TQ_SLEEP)
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mflag = M_WAITOK;
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else
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mflag = M_NOWAIT;
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task = uma_zalloc(taskq_zone, mflag);
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if (task == NULL)
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return (0);
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task->ost_func = func;
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task->ost_arg = arg;
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TASK_INIT(&task->ost_task, 0, taskq_run, task);
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taskqueue_enqueue(tq->tq_queue, &task->ost_task);
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return ((taskqid_t)(void *)task);
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}
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