1 | /* Definitions of constants and data structure for POSIX 1003.1b-1993 |
2 | scheduling interface. |
3 | Copyright (C) 1996-2018 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 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. |
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 | Lesser General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ |
19 | |
20 | #ifndef _BITS_SCHED_H |
21 | #define _BITS_SCHED_H 1 |
22 | |
23 | #ifndef _SCHED_H |
24 | # error "Never include <bits/sched.h> directly; use <sched.h> instead." |
25 | #endif |
26 | |
27 | /* Scheduling algorithms. */ |
28 | #define SCHED_OTHER 0 |
29 | #define SCHED_FIFO 1 |
30 | #define SCHED_RR 2 |
31 | #ifdef __USE_GNU |
32 | # define SCHED_BATCH 3 |
33 | # define SCHED_ISO 4 |
34 | # define SCHED_IDLE 5 |
35 | # define SCHED_DEADLINE 6 |
36 | |
37 | # define SCHED_RESET_ON_FORK 0x40000000 |
38 | #endif |
39 | |
40 | #ifdef __USE_GNU |
41 | /* Cloning flags. */ |
42 | # define CSIGNAL 0x000000ff /* Signal mask to be sent at exit. */ |
43 | # define CLONE_VM 0x00000100 /* Set if VM shared between processes. */ |
44 | # define CLONE_FS 0x00000200 /* Set if fs info shared between processes. */ |
45 | # define CLONE_FILES 0x00000400 /* Set if open files shared between processes. */ |
46 | # define CLONE_SIGHAND 0x00000800 /* Set if signal handlers shared. */ |
47 | # define CLONE_PTRACE 0x00002000 /* Set if tracing continues on the child. */ |
48 | # define CLONE_VFORK 0x00004000 /* Set if the parent wants the child to |
49 | wake it up on mm_release. */ |
50 | # define CLONE_PARENT 0x00008000 /* Set if we want to have the same |
51 | parent as the cloner. */ |
52 | # define CLONE_THREAD 0x00010000 /* Set to add to same thread group. */ |
53 | # define CLONE_NEWNS 0x00020000 /* Set to create new namespace. */ |
54 | # define CLONE_SYSVSEM 0x00040000 /* Set to shared SVID SEM_UNDO semantics. */ |
55 | # define CLONE_SETTLS 0x00080000 /* Set TLS info. */ |
56 | # define CLONE_PARENT_SETTID 0x00100000 /* Store TID in userlevel buffer |
57 | before MM copy. */ |
58 | # define CLONE_CHILD_CLEARTID 0x00200000 /* Register exit futex and memory |
59 | location to clear. */ |
60 | # define CLONE_DETACHED 0x00400000 /* Create clone detached. */ |
61 | # define CLONE_UNTRACED 0x00800000 /* Set if the tracing process can't |
62 | force CLONE_PTRACE on this clone. */ |
63 | # define CLONE_CHILD_SETTID 0x01000000 /* Store TID in userlevel buffer in |
64 | the child. */ |
65 | # define CLONE_NEWCGROUP 0x02000000 /* New cgroup namespace. */ |
66 | # define CLONE_NEWUTS 0x04000000 /* New utsname group. */ |
67 | # define CLONE_NEWIPC 0x08000000 /* New ipcs. */ |
68 | # define CLONE_NEWUSER 0x10000000 /* New user namespace. */ |
69 | # define CLONE_NEWPID 0x20000000 /* New pid namespace. */ |
70 | # define CLONE_NEWNET 0x40000000 /* New network namespace. */ |
71 | # define CLONE_IO 0x80000000 /* Clone I/O context. */ |
72 | #endif |
73 | |
74 | /* Data structure to describe a process' schedulability. */ |
75 | struct sched_param |
76 | { |
77 | int sched_priority; |
78 | }; |
79 | |
80 | __BEGIN_DECLS |
81 | |
82 | #ifdef __USE_GNU |
83 | /* Clone current process. */ |
84 | extern int clone (int (*__fn) (void *__arg), void *__child_stack, |
85 | int __flags, void *__arg, ...) __THROW; |
86 | |
87 | /* Unshare the specified resources. */ |
88 | extern int unshare (int __flags) __THROW; |
89 | |
90 | /* Get index of currently used CPU. */ |
91 | extern int sched_getcpu (void) __THROW; |
92 | |
93 | /* Switch process to namespace of type NSTYPE indicated by FD. */ |
94 | extern int setns (int __fd, int __nstype) __THROW; |
95 | #endif |
96 | |
97 | __END_DECLS |
98 | |
99 | #endif /* bits/sched.h */ |
100 | |