xref: /freebsd/sys/sys/kthread.h (revision 6990ffd8a95caaba6858ad44ff1b3157d1efba8f)
1 /*-
2  * Copyright (c) 1999 Peter Wemm <peter@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #ifndef _SYS_KTHREAD_H_
30 #define	_SYS_KTHREAD_H_
31 
32 #include <sys/cdefs.h>
33 
34 /*-
35  * A kernel process descriptor; used to start "internal" daemons.
36  *
37  * Note: global_procpp may be NULL for no global save area.
38  */
39 struct kproc_desc {
40 	char		*arg0;			/* arg 0 (for 'ps' listing) */
41 	void		(*func) __P((void));	/* "main" for kernel process */
42 	struct proc	**global_procpp;	/* ptr to proc ptr save area */
43 };
44 
45 void	kproc_shutdown __P((void *, int));
46 void	kproc_start __P((const void *));
47 int     kthread_create __P((void (*)(void *), void *, struct proc **,
48 	    int flags, const char *, ...)) __printflike(5, 6);
49 void    kthread_exit __P((int)) __dead2;
50 int	kthread_resume __P((struct proc *)); /* XXXKSE */
51 int	kthread_suspend __P((struct proc *, int)); /* XXXKSE */
52 void	kthread_suspend_check __P((struct proc *)); /* XXXKSE */
53 
54 #endif /* !_SYS_KTHREAD_H_ */
55