]>
Commit | Line | Data |
---|---|---|
5107cf1d UD |
1 | /* Definitions of constants and data structure for POSIX 1003.1b-1993 |
2 | scheduling interface. | |
949ec764 | 3 | Copyright (C) 1996, 1997, 2001, 2003 Free Software Foundation, Inc. |
54d79e99 | 4 | This file is part of the GNU C Library. |
92777700 | 5 | |
54d79e99 | 6 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
92777700 | 10 | |
54d79e99 UD |
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 | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
92777700 | 15 | |
41bdb6e2 AJ |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 | 02111-1307 USA. */ | |
92777700 | 20 | |
5107cf1d | 21 | #ifndef _SCHED_H |
f4017d20 | 22 | # error "Never include <bits/sched.h> directly; use <sched.h> instead." |
5107cf1d UD |
23 | #endif |
24 | ||
25 | ||
26 | /* Scheduling algorithms. */ | |
27 | #define SCHED_OTHER 0 | |
28 | #define SCHED_FIFO 1 | |
29 | #define SCHED_RR 2 | |
30 | ||
31 | /* Data structure to describe a process' schedulability. */ | |
32 | struct sched_param | |
33 | { | |
4a2c9975 | 34 | int __sched_priority; |
5107cf1d | 35 | }; |
949ec764 UD |
36 | |
37 | ||
0e563cd6 UD |
38 | #if defined _SCHED_H && !defined __cpu_set_t_defined |
39 | # define __cpu_set_t_defined | |
949ec764 | 40 | /* Size definition for CPU sets. */ |
0e563cd6 UD |
41 | # define __CPU_SETSIZE 1024 |
42 | # define __NCPUBITS (8 * sizeof (__cpu_mask)) | |
949ec764 UD |
43 | |
44 | /* Type for array elements in 'cpu_set'. */ | |
45 | typedef unsigned long int __cpu_mask; | |
46 | ||
47 | /* Basic access functions. */ | |
0e563cd6 UD |
48 | # define __CPUELT(cpu) ((cpu) / __NCPUBITS) |
49 | # define __CPUMASK(cpu) ((__cpu_mask) 1 << ((cpu) % __NCPUBITS)) | |
949ec764 UD |
50 | |
51 | /* Data structure to describe CPU mask. */ | |
52 | typedef struct | |
53 | { | |
54 | __cpu_mask __bits[__CPU_SETSIZE / __NCPUBITS]; | |
55 | } cpu_set_t; | |
56 | ||
57 | /* Access functions for CPU masks. */ | |
0e563cd6 | 58 | # define __CPU_ZERO(cpusetp) \ |
949ec764 UD |
59 | do { \ |
60 | unsigned int __i; \ | |
61 | cpu_set *__arr = (cpusetp); \ | |
62 | for (__i = 0; __i < sizeof (cpu_set) / sizeof (__cpu_mask); ++__i) \ | |
63 | __arr->__bits[__i] = 0; \ | |
64 | } while (0) | |
0e563cd6 | 65 | # define __CPU_SET(cpu, cpusetp) \ |
949ec764 | 66 | ((cpusetp)->__bits[__CPUELT (cpu)] |= __CPUMASK (cpu)) |
0e563cd6 | 67 | # define __CPU_CLR(cpu, cpusetp) \ |
949ec764 | 68 | ((cpusetp)->__bits[__CPUELT (cpu)] &= ~__CPUMASK (cpu)) |
0e563cd6 | 69 | # define __CPU_ISSET(cpu, cpusetp) \ |
949ec764 | 70 | (((cpusetp)->__bits[__CPUELT (cpu)] & __CPUMASK (cpu)) != 0) |
0e563cd6 | 71 | #endif |