1a9643ea8Slogwang /*- 2*22ce4affSfengbojiang * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3*22ce4affSfengbojiang * 4a9643ea8Slogwang * Copyright (c) 2000 Doug Rabson 5a9643ea8Slogwang * All rights reserved. 6a9643ea8Slogwang * 7a9643ea8Slogwang * Redistribution and use in source and binary forms, with or without 8a9643ea8Slogwang * modification, are permitted provided that the following conditions 9a9643ea8Slogwang * are met: 10a9643ea8Slogwang * 1. Redistributions of source code must retain the above copyright 11a9643ea8Slogwang * notice, this list of conditions and the following disclaimer. 12a9643ea8Slogwang * 2. Redistributions in binary form must reproduce the above copyright 13a9643ea8Slogwang * notice, this list of conditions and the following disclaimer in the 14a9643ea8Slogwang * documentation and/or other materials provided with the distribution. 15a9643ea8Slogwang * 16a9643ea8Slogwang * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17a9643ea8Slogwang * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18a9643ea8Slogwang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19a9643ea8Slogwang * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20a9643ea8Slogwang * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21a9643ea8Slogwang * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22a9643ea8Slogwang * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23a9643ea8Slogwang * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24a9643ea8Slogwang * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25a9643ea8Slogwang * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26a9643ea8Slogwang * SUCH DAMAGE. 27a9643ea8Slogwang * 28a9643ea8Slogwang * $FreeBSD$ 29a9643ea8Slogwang */ 30a9643ea8Slogwang 31a9643ea8Slogwang #ifndef _SYS__TASK_H_ 32a9643ea8Slogwang #define _SYS__TASK_H_ 33a9643ea8Slogwang 34a9643ea8Slogwang #include <sys/queue.h> 35a9643ea8Slogwang 36a9643ea8Slogwang /* 37a9643ea8Slogwang * Each task includes a function which is called from 38a9643ea8Slogwang * taskqueue_run(). The first argument is taken from the 'ta_context' 39a9643ea8Slogwang * field of struct task and the second argument is a count of how many 40a9643ea8Slogwang * times the task was enqueued before the call to taskqueue_run(). 41a9643ea8Slogwang * 42a9643ea8Slogwang * List of locks 43a9643ea8Slogwang * (c) const after init 44a9643ea8Slogwang * (q) taskqueue lock 45a9643ea8Slogwang */ 46a9643ea8Slogwang typedef void task_fn_t(void *context, int pending); 47a9643ea8Slogwang 48a9643ea8Slogwang struct task { 49a9643ea8Slogwang STAILQ_ENTRY(task) ta_link; /* (q) link for queue */ 50a9643ea8Slogwang uint16_t ta_pending; /* (q) count times queued */ 51*22ce4affSfengbojiang uint8_t ta_priority; /* (c) Priority */ 52*22ce4affSfengbojiang uint8_t ta_flags; /* (c) Flags */ 53a9643ea8Slogwang task_fn_t *ta_func; /* (c) task handler */ 54a9643ea8Slogwang void *ta_context; /* (c) argument for handler */ 55a9643ea8Slogwang }; 56a9643ea8Slogwang 57*22ce4affSfengbojiang #define TASK_ENQUEUED 0x1 58*22ce4affSfengbojiang #define TASK_NOENQUEUE 0x2 59*22ce4affSfengbojiang #define TASK_NETWORK 0x4 60*22ce4affSfengbojiang 61*22ce4affSfengbojiang #define TASK_IS_NET(ta) ((ta)->ta_flags & TASK_NETWORK) 62*22ce4affSfengbojiang 63*22ce4affSfengbojiang #ifdef _KERNEL 64*22ce4affSfengbojiang 65*22ce4affSfengbojiang typedef void gtask_fn_t(void *context); 66*22ce4affSfengbojiang 67a9643ea8Slogwang struct gtask { 68a9643ea8Slogwang STAILQ_ENTRY(gtask) ta_link; /* (q) link for queue */ 69a9643ea8Slogwang uint16_t ta_flags; /* (q) state flags */ 70a9643ea8Slogwang u_short ta_priority; /* (c) Priority */ 71a9643ea8Slogwang gtask_fn_t *ta_func; /* (c) task handler */ 72a9643ea8Slogwang void *ta_context; /* (c) argument for handler */ 73a9643ea8Slogwang }; 74a9643ea8Slogwang 75*22ce4affSfengbojiang #endif /* _KERNEL */ 76a9643ea8Slogwang 77a9643ea8Slogwang #endif /* !_SYS__TASK_H_ */ 78