File: /usr/include/bits/sched.h
1 /* Definitions of constants and data structure for POSIX 1003.1b-1993
2 scheduling interface.
3 Copyright (C) 1996, 1997, 1998, 1999, 2001 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
15
16 You should have received a copy of the GNU Library General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21 #ifndef __need_schedparam
22
23 #ifndef _SCHED_H
24 # error "Never include <bits/sched.h> directly; use <sched.h> instead."
25 #endif
26
27
28 /* Scheduling algorithms. */
29 #define SCHED_OTHER 0
30 #define SCHED_FIFO 1
31 #define SCHED_RR 2
32
33 #ifdef __USE_MISC
34 /* Cloning flags. */
35 # define CSIGNAL 0x000000ff /* Signal mask to be sent at exit. */
36 # define CLONE_VM 0x00000100 /* Set if VM shared between processes. */
37 # define CLONE_FS 0x00000200 /* Set if fs info shared between processes. */
38 # define CLONE_FILES 0x00000400 /* Set if open files shared between processes. */
39 # define CLONE_SIGHAND 0x00000800 /* Set if signal handlers shared. */
40 # define CLONE_PID 0x00001000 /* Set if pid shared. */
41 # define CLONE_PTRACE 0x00002000 /* Set if tracing continues on the child. */
42 # define CLONE_VFORK 0x00004000 /* Set if the parent wants the child to
43 wake it up on mm_release. */
44 #endif
45
46 /* The official definition. */
47 struct sched_param
48 {
49 int __sched_priority;
50 };
51
52 __BEGIN_DECLS
53
54 /* Clone current process. */
55 #ifdef __USE_MISC
56 extern int clone (int (*__fn) (void *__arg), void *__child_stack,
57 int __flags, void *__arg) __THROW;
58 #endif
59
60 __END_DECLS
61
62 #endif /* need schedparam */
63
64 #if !defined __defined_schedparam \
65 && (defined __need_schedparam || defined _SCHED_H)
66 # define __defined_schedparam 1
67 /* Data structure to describe a process' schedulability. */
68 struct __sched_param
69 {
70 int __sched_priority;
71 };
72 # undef __need_schedparam
73 #endif
74