1 | /* Copyright (C) 1992-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #ifndef _SYS_RESOURCE_H |
19 | #define _SYS_RESOURCE_H 1 |
20 | |
21 | #include <features.h> |
22 | |
23 | /* Get the system-dependent definitions of structures and bit values. */ |
24 | #include <bits/resource.h> |
25 | |
26 | #ifndef __id_t_defined |
27 | typedef __id_t id_t; |
28 | # define __id_t_defined |
29 | #endif |
30 | |
31 | __BEGIN_DECLS |
32 | |
33 | /* The X/Open standard defines that all the functions below must use |
34 | `int' as the type for the first argument. When we are compiling with |
35 | GNU extensions we change this slightly to provide better error |
36 | checking. */ |
37 | #if defined __USE_GNU && !defined __cplusplus |
38 | typedef enum __rlimit_resource __rlimit_resource_t; |
39 | typedef enum __rusage_who __rusage_who_t; |
40 | typedef enum __priority_which __priority_which_t; |
41 | #else |
42 | typedef int __rlimit_resource_t; |
43 | typedef int __rusage_who_t; |
44 | typedef int __priority_which_t; |
45 | #endif |
46 | |
47 | /* Put the soft and hard limits for RESOURCE in *RLIMITS. |
48 | Returns 0 if successful, -1 if not (and sets errno). */ |
49 | #ifndef __USE_FILE_OFFSET64 |
50 | extern int getrlimit (__rlimit_resource_t __resource, |
51 | struct rlimit *__rlimits) __THROW __nonnull ((2)); |
52 | #else |
53 | # ifdef __REDIRECT_NTH |
54 | extern int __REDIRECT_NTH (getrlimit, (__rlimit_resource_t __resource, |
55 | struct rlimit *__rlimits), getrlimit64) |
56 | __nonnull ((2)); |
57 | # else |
58 | # define getrlimit getrlimit64 |
59 | # endif |
60 | #endif |
61 | #ifdef __USE_LARGEFILE64 |
62 | extern int getrlimit64 (__rlimit_resource_t __resource, |
63 | struct rlimit64 *__rlimits) __THROW __nonnull ((2)); |
64 | #endif |
65 | |
66 | /* Set the soft and hard limits for RESOURCE to *RLIMITS. |
67 | Only the super-user can increase hard limits. |
68 | Return 0 if successful, -1 if not (and sets errno). */ |
69 | #ifndef __USE_FILE_OFFSET64 |
70 | extern int setrlimit (__rlimit_resource_t __resource, |
71 | const struct rlimit *__rlimits) __THROW __nonnull ((2)); |
72 | #else |
73 | # ifdef __REDIRECT_NTH |
74 | extern int __REDIRECT_NTH (setrlimit, (__rlimit_resource_t __resource, |
75 | const struct rlimit *__rlimits), |
76 | setrlimit64) __nonnull ((2)); |
77 | # else |
78 | # define setrlimit setrlimit64 |
79 | # endif |
80 | #endif |
81 | #ifdef __USE_LARGEFILE64 |
82 | extern int setrlimit64 (__rlimit_resource_t __resource, |
83 | const struct rlimit64 *__rlimits) __THROW |
84 | __nonnull ((2)); |
85 | #endif |
86 | |
87 | /* Return resource usage information on process indicated by WHO |
88 | and put it in *USAGE. Returns 0 for success, -1 for failure. */ |
89 | extern int getrusage (__rusage_who_t __who, struct rusage *__usage) __THROW; |
90 | |
91 | #ifdef __USE_TIME_BITS64 |
92 | # if defined(__REDIRECT_NTH) |
93 | extern int __REDIRECT_NTH (getrusage, (__rusage_who_t __who, |
94 | struct rusage *__usage), |
95 | __getrusage64); |
96 | # else |
97 | # define getrusage __getrusage64 |
98 | # endif |
99 | #endif |
100 | |
101 | /* Return the highest priority of any process specified by WHICH and WHO |
102 | (see above); if WHO is zero, the current process, process group, or user |
103 | (as specified by WHO) is used. A lower priority number means higher |
104 | priority. Priorities range from PRIO_MIN to PRIO_MAX (above). */ |
105 | extern int getpriority (__priority_which_t __which, id_t __who) __THROW; |
106 | |
107 | /* Set the priority of all processes specified by WHICH and WHO (see above) |
108 | to PRIO. Returns 0 on success, -1 on errors. */ |
109 | extern int setpriority (__priority_which_t __which, id_t __who, int __prio) |
110 | __THROW; |
111 | |
112 | __END_DECLS |
113 | |
114 | #endif /* sys/resource.h */ |
115 | |