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 27 #ifndef _SYS_KTHREAD_H_ 28 #define _SYS_KTHREAD_H_ 29 30 #ifndef _SYS_CDEFS_H_ 31 #include <sys/cdefs.h> 32 #endif 33 34 #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES) 35 #error "This file should not be included by userland programs." 36 #endif 37 38 struct proc; 39 struct thread; 40 41 /* 42 * A kernel process descriptor; used to start "internal" daemons 43 * 44 * Note: global_procpp may be NULL for no global save area 45 */ 46 struct kproc_desc { 47 char *arg0; /* arg 0 (for 'ps' listing) */ 48 void (*func) (void); /* "main" for kernel process */ 49 struct thread **global_threadpp; /* ptr to proc ptr save area */ 50 }; 51 52 #ifdef _KERNEL 53 void kproc_start (const void *); 54 55 int suspend_kproc (struct thread *, int); 56 int resume_kproc (struct thread *); 57 void kproc_suspend_loop (void); 58 void shutdown_kproc (void *, int); 59 int kthread_alloc (void (*)(void *), void *, struct thread **, 60 const char *, ...) __printflike(4, 5); 61 int kthread_create (void (*)(void *), void *, struct thread **, 62 const char *, ...) __printflike(4, 5); 63 int kthread_create_cpu (void (*)(void *), void *, struct thread **, 64 int, const char *, ...) __printflike(5, 6); 65 void kthread_exit (void) __dead2; 66 #endif /* _KERNEL */ 67 68 #endif /* _SYS_KTHREAD_H_ */ 69