The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/kthread.h

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    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: releng/11.1/sys/sys/kthread.h 284911 2015-06-28 12:52:28Z markm $
   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         const char      *arg0;                  /* arg 0 (for 'ps' listing) */
   41         void            (*func)(void);          /* "main" for kernel process */
   42         struct proc     **global_procpp;        /* ptr to proc ptr save area */
   43 };
   44 
   45  /* A kernel thread descriptor; used to start "internal" daemons. */
   46 struct kthread_desc {
   47         const char      *arg0;                  /* arg 0 (for 'ps' listing) */
   48         void            (*func)(void);          /* "main" for kernel thread */
   49         struct thread   **global_threadpp;      /* ptr to thread ptr save area */
   50 };
   51 
   52 int     kproc_create(void (*)(void *), void *, struct proc **,
   53             int flags, int pages, const char *, ...) __printflike(6, 7);
   54 void    kproc_exit(int) __dead2;
   55 int     kproc_resume(struct proc *);
   56 void    kproc_shutdown(void *, int);
   57 void    kproc_start(const void *);
   58 int     kproc_suspend(struct proc *, int);
   59 void    kproc_suspend_check(struct proc *);
   60 
   61 /* create a thread inthe given process. create the process if needed */
   62 int     kproc_kthread_add(void (*)(void *), void *,
   63             struct proc **,
   64             struct thread **,
   65             int flags, int pages,
   66             const char *procname, const char *, ...) __printflike(8, 9);
   67 
   68 int     kthread_add(void (*)(void *), void *,
   69             struct proc *, struct thread **,
   70             int flags, int pages, const char *, ...) __printflike(7, 8);
   71 void    kthread_exit(void) __dead2;
   72 int     kthread_resume(struct thread *);
   73 void    kthread_shutdown(void *, int);
   74 void    kthread_start(const void *);
   75 int     kthread_suspend(struct thread *, int);
   76 void    kthread_suspend_check(void);
   77 
   78 
   79 #endif /* !_SYS_KTHREAD_H_ */

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