/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2000 Doug Rabson * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _SYS__TASK_H_ #define _SYS__TASK_H_ #include <sys/queue.h> /* * Each task includes a function which is called from * taskqueue_run(). The first argument is taken from the 'ta_context' * field of struct task and the second argument is a count of how many * times the task was enqueued before the call to taskqueue_run(). * * List of locks * (c) const after init * (q) taskqueue lock */ typedef void task_fn_t(void *context, int pending); struct task { STAILQ_ENTRY(task) ta_link; /* (q) link for queue */ uint16_t ta_pending; /* (q) count times queued */ uint8_t ta_priority; /* (c) Priority */ uint8_t ta_flags; /* (c) Flags */ task_fn_t *ta_func; /* (c) task handler */ void *ta_context; /* (c) argument for handler */ }; #define TASK_ENQUEUED 0x1 #define TASK_NOENQUEUE 0x2 #define TASK_NETWORK 0x4 #define TASK_IS_NET(ta) ((ta)->ta_flags & TASK_NETWORK) #ifdef _KERNEL typedef void gtask_fn_t(void *context); struct gtask { STAILQ_ENTRY(gtask) ta_link; /* (q) link for queue */ uint16_t ta_flags; /* (q) state flags */ u_short ta_priority; /* (c) Priority */ gtask_fn_t *ta_func; /* (c) task handler */ void *ta_context; /* (c) argument for handler */ }; #endif /* _KERNEL */ #endif /* !_SYS__TASK_H_ */ |