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7b3547eb | 1 | /* Definitions for POSIX 1003.1b-1993 (aka POSIX.4) scheduling interface. |
04277e02 | 2 | Copyright (C) 1996-2019 Free Software Foundation, Inc. |
7e3be507 UD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
7e3be507 UD |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
7e3be507 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
7b3547eb RM |
18 | |
19 | #ifndef _SCHED_H | |
20 | #define _SCHED_H 1 | |
21 | ||
22 | #include <features.h> | |
23 | ||
24 | /* Get type definitions. */ | |
5107cf1d | 25 | #include <bits/types.h> |
b9b49b44 | 26 | |
50e16f85 | 27 | #define __need_size_t |
05b68e14 | 28 | #define __need_NULL |
50e16f85 UD |
29 | #include <stddef.h> |
30 | ||
05b68e14 ZW |
31 | #include <bits/types/time_t.h> |
32 | #include <bits/types/struct_timespec.h> | |
33 | #ifndef __USE_XOPEN2K | |
34 | # include <time.h> | |
bc61d27c | 35 | #endif |
7b3547eb | 36 | |
25fdd5d1 UD |
37 | #ifndef __pid_t_defined |
38 | typedef __pid_t pid_t; | |
39 | # define __pid_t_defined | |
40 | #endif | |
41 | ||
7b3547eb | 42 | /* Get system specific constant and data structure definitions. */ |
5107cf1d | 43 | #include <bits/sched.h> |
46ee3da5 ZW |
44 | #include <bits/cpu-set.h> |
45 | ||
46 | /* Backward compatibility. */ | |
47 | #define sched_priority sched_priority | |
c15f10ee | 48 | #define __sched_priority sched_priority |
4a2c9975 | 49 | |
7b3547eb RM |
50 | |
51 | __BEGIN_DECLS | |
52 | ||
53 | /* Set scheduling parameters for a process. */ | |
a784e502 | 54 | extern int sched_setparam (__pid_t __pid, const struct sched_param *__param) |
c1422e5b | 55 | __THROW; |
7b3547eb RM |
56 | |
57 | /* Retrieve scheduling parameters for a particular process. */ | |
c1422e5b | 58 | extern int sched_getparam (__pid_t __pid, struct sched_param *__param) __THROW; |
7b3547eb RM |
59 | |
60 | /* Set scheduling algorithm and/or parameters for a process. */ | |
c1422e5b | 61 | extern int sched_setscheduler (__pid_t __pid, int __policy, |
a784e502 | 62 | const struct sched_param *__param) __THROW; |
7b3547eb RM |
63 | |
64 | /* Retrieve scheduling algorithm for a particular purpose. */ | |
c1422e5b | 65 | extern int sched_getscheduler (__pid_t __pid) __THROW; |
7b3547eb RM |
66 | |
67 | /* Yield the processor. */ | |
c1422e5b | 68 | extern int sched_yield (void) __THROW; |
7b3547eb RM |
69 | |
70 | /* Get maximum priority value for a scheduler. */ | |
c1422e5b | 71 | extern int sched_get_priority_max (int __algorithm) __THROW; |
7b3547eb RM |
72 | |
73 | /* Get minimum priority value for a scheduler. */ | |
c1422e5b | 74 | extern int sched_get_priority_min (int __algorithm) __THROW; |
7b3547eb RM |
75 | |
76 | /* Get the SCHED_RR interval for the named process. */ | |
c1422e5b | 77 | extern int sched_rr_get_interval (__pid_t __pid, struct timespec *__t) __THROW; |
7b3547eb | 78 | |
972e719e UD |
79 | |
80 | #ifdef __USE_GNU | |
949ec764 | 81 | /* Access macros for `cpu_set'. */ |
b4afdd06 | 82 | # define CPU_SETSIZE __CPU_SETSIZE |
a14ad5ae UD |
83 | # define CPU_SET(cpu, cpusetp) __CPU_SET_S (cpu, sizeof (cpu_set_t), cpusetp) |
84 | # define CPU_CLR(cpu, cpusetp) __CPU_CLR_S (cpu, sizeof (cpu_set_t), cpusetp) | |
85 | # define CPU_ISSET(cpu, cpusetp) __CPU_ISSET_S (cpu, sizeof (cpu_set_t), \ | |
86 | cpusetp) | |
87 | # define CPU_ZERO(cpusetp) __CPU_ZERO_S (sizeof (cpu_set_t), cpusetp) | |
88 | # define CPU_COUNT(cpusetp) __CPU_COUNT_S (sizeof (cpu_set_t), cpusetp) | |
89 | ||
90 | # define CPU_SET_S(cpu, setsize, cpusetp) __CPU_SET_S (cpu, setsize, cpusetp) | |
91 | # define CPU_CLR_S(cpu, setsize, cpusetp) __CPU_CLR_S (cpu, setsize, cpusetp) | |
92 | # define CPU_ISSET_S(cpu, setsize, cpusetp) __CPU_ISSET_S (cpu, setsize, \ | |
93 | cpusetp) | |
94 | # define CPU_ZERO_S(setsize, cpusetp) __CPU_ZERO_S (setsize, cpusetp) | |
95 | # define CPU_COUNT_S(setsize, cpusetp) __CPU_COUNT_S (setsize, cpusetp) | |
96 | ||
97 | # define CPU_EQUAL(cpusetp1, cpusetp2) \ | |
98 | __CPU_EQUAL_S (sizeof (cpu_set_t), cpusetp1, cpusetp2) | |
99 | # define CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \ | |
100 | __CPU_EQUAL_S (setsize, cpusetp1, cpusetp2) | |
101 | ||
102 | # define CPU_AND(destset, srcset1, srcset2) \ | |
103 | __CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, &) | |
104 | # define CPU_OR(destset, srcset1, srcset2) \ | |
105 | __CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, |) | |
106 | # define CPU_XOR(destset, srcset1, srcset2) \ | |
107 | __CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, ^) | |
108 | # define CPU_AND_S(setsize, destset, srcset1, srcset2) \ | |
109 | __CPU_OP_S (setsize, destset, srcset1, srcset2, &) | |
110 | # define CPU_OR_S(setsize, destset, srcset1, srcset2) \ | |
111 | __CPU_OP_S (setsize, destset, srcset1, srcset2, |) | |
112 | # define CPU_XOR_S(setsize, destset, srcset1, srcset2) \ | |
113 | __CPU_OP_S (setsize, destset, srcset1, srcset2, ^) | |
114 | ||
115 | # define CPU_ALLOC_SIZE(count) __CPU_ALLOC_SIZE (count) | |
116 | # define CPU_ALLOC(count) __CPU_ALLOC (count) | |
c4adefbd | 117 | # define CPU_FREE(cpuset) __CPU_FREE (cpuset) |
949ec764 UD |
118 | |
119 | ||
972e719e | 120 | /* Set the CPU affinity for a task */ |
439ff07b | 121 | extern int sched_setaffinity (__pid_t __pid, size_t __cpusetsize, |
a784e502 | 122 | const cpu_set_t *__cpuset) __THROW; |
972e719e UD |
123 | |
124 | /* Get the CPU affinity for a task */ | |
439ff07b UD |
125 | extern int sched_getaffinity (__pid_t __pid, size_t __cpusetsize, |
126 | cpu_set_t *__cpuset) __THROW; | |
972e719e UD |
127 | #endif |
128 | ||
7b3547eb RM |
129 | __END_DECLS |
130 | ||
131 | #endif /* sched.h */ |