1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2000 Doug Rabson 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _SYS__TASK_H_ 32 #define _SYS__TASK_H_ 33 34 #include <sys/queue.h> 35 36 /* 37 * Each task includes a function which is called from 38 * taskqueue_run(). The first argument is taken from the 'ta_context' 39 * field of struct task and the second argument is a count of how many 40 * times the task was enqueued before the call to taskqueue_run(). 41 * 42 * List of locks 43 * (c) const after init 44 * (q) taskqueue lock 45 */ 46 typedef void task_fn_t(void *context, int pending); 47 typedef void gtask_fn_t(void *context); 48 49 struct task { 50 STAILQ_ENTRY(task) ta_link; /* (q) link for queue */ 51 uint16_t ta_pending; /* (q) count times queued */ 52 u_short ta_priority; /* (c) Priority */ 53 task_fn_t *ta_func; /* (c) task handler */ 54 void *ta_context; /* (c) argument for handler */ 55 }; 56 57 struct gtask { 58 STAILQ_ENTRY(gtask) ta_link; /* (q) link for queue */ 59 uint16_t ta_flags; /* (q) state flags */ 60 u_short ta_priority; /* (c) Priority */ 61 gtask_fn_t *ta_func; /* (c) task handler */ 62 void *ta_context; /* (c) argument for handler */ 63 }; 64 65 struct grouptask { 66 struct gtask gt_task; 67 void *gt_taskqueue; 68 LIST_ENTRY(grouptask) gt_list; 69 void *gt_uniq; 70 #define GROUPTASK_NAMELEN 32 71 char gt_name[GROUPTASK_NAMELEN]; 72 int16_t gt_irq; 73 int16_t gt_cpu; 74 }; 75 76 #endif /* !_SYS__TASK_H_ */ 77