63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/* $OpenBSD: task.h,v 1.18 2020/08/01 08:40:20 anton Exp $ */
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/*
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* Copyright (c) 2013 David Gwynne <dlg@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _SYS_TASK_H_
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#define _SYS_TASK_H_
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#include <sys/queue.h>
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struct taskq;
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struct task {
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TAILQ_ENTRY(task) t_entry;
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void (*t_func)(void *);
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void *t_arg;
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unsigned int t_flags;
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#if 1 /* NKCOV > 0 */
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struct process *t_process;
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#endif
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};
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#define TASK_ONQUEUE 1
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TAILQ_HEAD(task_list, task);
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#define TASKQ_MPSAFE (1 << 0)
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#define TASK_INITIALIZER(_f, _a) {{ NULL, NULL }, (_f), (_a), 0 }
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#ifdef _KERNEL
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extern struct taskq *const systq;
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extern struct taskq *const systqmp;
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struct taskq *taskq_create(const char *, unsigned int, int, unsigned int);
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void taskq_destroy(struct taskq *);
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void taskq_barrier(struct taskq *);
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void taskq_del_barrier(struct taskq *, struct task *);
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void task_set(struct task *, void (*)(void *), void *);
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int task_add(struct taskq *, struct task *);
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int task_del(struct taskq *, struct task *);
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#define task_pending(_t) ((_t)->t_flags & TASK_ONQUEUE)
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#endif /* _KERNEL */
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#endif /* _SYS_TASK_H_ */
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