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edf5b2d7 UD |
1 | /* Definitions of constants and data structure for POSIX 1003.1b-1993 |
2 | scheduling interface. | |
abcea667 | 3 | Copyright (C) 1996-1999,2001-2003,2005,2006 Free Software Foundation, Inc. |
10dc2a90 | 4 | This file is part of the GNU C Library. |
edf5b2d7 | 5 | |
10dc2a90 | 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. | |
edf5b2d7 | 10 | |
10dc2a90 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. |
edf5b2d7 | 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. */ | |
edf5b2d7 | 20 | |
4959e310 UD |
21 | #ifndef __need_schedparam |
22 | ||
5107cf1d | 23 | #ifndef _SCHED_H |
f4017d20 | 24 | # error "Never include <bits/sched.h> directly; use <sched.h> instead." |
5107cf1d UD |
25 | #endif |
26 | ||
0c5ecdc4 | 27 | |
edf5b2d7 UD |
28 | /* Scheduling algorithms. */ |
29 | #define SCHED_OTHER 0 | |
30 | #define SCHED_FIFO 1 | |
31 | #define SCHED_RR 2 | |
abcea667 UD |
32 | #ifdef __USE_GNU |
33 | # define SCHED_BATCH 3 | |
34 | #endif | |
edf5b2d7 | 35 | |
f4017d20 | 36 | #ifdef __USE_MISC |
edf5b2d7 | 37 | /* Cloning flags. */ |
f4017d20 UD |
38 | # define CSIGNAL 0x000000ff /* Signal mask to be sent at exit. */ |
39 | # define CLONE_VM 0x00000100 /* Set if VM shared between processes. */ | |
3387a425 UD |
40 | # define CLONE_FS 0x00000200 /* Set if fs info shared between processes. */ |
41 | # define CLONE_FILES 0x00000400 /* Set if open files shared between processes. */ | |
f4017d20 | 42 | # define CLONE_SIGHAND 0x00000800 /* Set if signal handlers shared. */ |
3387a425 | 43 | # define CLONE_PTRACE 0x00002000 /* Set if tracing continues on the child. */ |
d53afacb UD |
44 | # define CLONE_VFORK 0x00004000 /* Set if the parent wants the child to |
45 | wake it up on mm_release. */ | |
755e51be UD |
46 | # define CLONE_PARENT 0x00008000 /* Set if we want to have the same |
47 | parent as the cloner. */ | |
48 | # define CLONE_THREAD 0x00010000 /* Set to add to same thread group. */ | |
49 | # define CLONE_NEWNS 0x00020000 /* Set to create new namespace. */ | |
50 | # define CLONE_SYSVSEM 0x00040000 /* Set to shared SVID SEM_UNDO semantics. */ | |
51 | # define CLONE_SETTLS 0x00080000 /* Set TLS info. */ | |
52 | # define CLONE_PARENT_SETTID 0x00100000 /* Store TID in userlevel buffer | |
53 | before MM copy. */ | |
54 | # define CLONE_CHILD_CLEARTID 0x00200000 /* Register exit futex and memory | |
55 | location to clear. */ | |
56 | # define CLONE_DETACHED 0x00400000 /* Create clone detached. */ | |
57 | # define CLONE_UNTRACED 0x00800000 /* Set if the tracing process can't | |
58 | force CLONE_PTRACE on this clone. */ | |
59 | # define CLONE_CHILD_SETTID 0x01000000 /* Store TID in userlevel buffer in | |
60 | the child. */ | |
7e939b21 | 61 | # define CLONE_STOPPED 0x02000000 /* Start in stopped state. */ |
f4017d20 | 62 | #endif |
edf5b2d7 | 63 | |
4959e310 UD |
64 | /* The official definition. */ |
65 | struct sched_param | |
66 | { | |
4a2c9975 | 67 | int __sched_priority; |
4959e310 | 68 | }; |
edf5b2d7 | 69 | |
f4017d20 UD |
70 | __BEGIN_DECLS |
71 | ||
0ecb606c | 72 | /* Clone current process. */ |
a334319f | 73 | #ifdef __USE_MISC |
4d3a563f | 74 | extern int clone (int (*__fn) (void *__arg), void *__child_stack, |
6f8116b3 | 75 | int __flags, void *__arg, ...) __THROW; |
0c5ecdc4 | 76 | #endif |
f4017d20 | 77 | |
ba9234d9 UD |
78 | __END_DECLS |
79 | ||
4959e310 UD |
80 | #endif /* need schedparam */ |
81 | ||
82 | #if !defined __defined_schedparam \ | |
83 | && (defined __need_schedparam || defined _SCHED_H) | |
84 | # define __defined_schedparam 1 | |
85 | /* Data structure to describe a process' schedulability. */ | |
86 | struct __sched_param | |
87 | { | |
4a2c9975 | 88 | int __sched_priority; |
4959e310 UD |
89 | }; |
90 | # undef __need_schedparam | |
91 | #endif | |
949ec764 UD |
92 | |
93 | ||
0e563cd6 UD |
94 | #if defined _SCHED_H && !defined __cpu_set_t_defined |
95 | # define __cpu_set_t_defined | |
949ec764 | 96 | /* Size definition for CPU sets. */ |
0e563cd6 UD |
97 | # define __CPU_SETSIZE 1024 |
98 | # define __NCPUBITS (8 * sizeof (__cpu_mask)) | |
949ec764 UD |
99 | |
100 | /* Type for array elements in 'cpu_set'. */ | |
101 | typedef unsigned long int __cpu_mask; | |
102 | ||
103 | /* Basic access functions. */ | |
0e563cd6 UD |
104 | # define __CPUELT(cpu) ((cpu) / __NCPUBITS) |
105 | # define __CPUMASK(cpu) ((__cpu_mask) 1 << ((cpu) % __NCPUBITS)) | |
949ec764 UD |
106 | |
107 | /* Data structure to describe CPU mask. */ | |
108 | typedef struct | |
109 | { | |
110 | __cpu_mask __bits[__CPU_SETSIZE / __NCPUBITS]; | |
111 | } cpu_set_t; | |
112 | ||
113 | /* Access functions for CPU masks. */ | |
0e563cd6 | 114 | # define __CPU_ZERO(cpusetp) \ |
949ec764 UD |
115 | do { \ |
116 | unsigned int __i; \ | |
80f536db UD |
117 | cpu_set_t *__arr = (cpusetp); \ |
118 | for (__i = 0; __i < sizeof (cpu_set_t) / sizeof (__cpu_mask); ++__i) \ | |
949ec764 UD |
119 | __arr->__bits[__i] = 0; \ |
120 | } while (0) | |
0e563cd6 | 121 | # define __CPU_SET(cpu, cpusetp) \ |
949ec764 | 122 | ((cpusetp)->__bits[__CPUELT (cpu)] |= __CPUMASK (cpu)) |
0e563cd6 | 123 | # define __CPU_CLR(cpu, cpusetp) \ |
949ec764 | 124 | ((cpusetp)->__bits[__CPUELT (cpu)] &= ~__CPUMASK (cpu)) |
0e563cd6 | 125 | # define __CPU_ISSET(cpu, cpusetp) \ |
949ec764 | 126 | (((cpusetp)->__bits[__CPUELT (cpu)] & __CPUMASK (cpu)) != 0) |
0e563cd6 | 127 | #endif |