1 /* Bit values & structures for resource limits. Linux/MIPS version.
2 Copyright (C) 1994-2024 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
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.
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
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library. If not, see
17 <https://www.gnu.org/licenses/>. */
19 #ifndef _SYS_RESOURCE_H
20 # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead."
23 #include <bits/types.h>
25 /* Transmute defines to enumerations. The macro re-definitions are
26 necessary because some programs want to test for operating system
27 features with #ifdef RUSAGE_SELF. In ISO C the reflexive
28 definition is a no-op. */
30 /* Kinds of resource limit. */
31 enum __rlimit_resource
33 /* Per-process CPU limit, in seconds. */
35 #define RLIMIT_CPU RLIMIT_CPU
37 /* Largest file that can be created, in bytes. */
39 #define RLIMIT_FSIZE RLIMIT_FSIZE
41 /* Maximum size of data segment, in bytes. */
43 #define RLIMIT_DATA RLIMIT_DATA
45 /* Maximum size of stack segment, in bytes. */
47 #define RLIMIT_STACK RLIMIT_STACK
49 /* Largest core file that can be created, in bytes. */
51 #define RLIMIT_CORE RLIMIT_CORE
53 /* Largest resident set size, in bytes.
54 This affects swapping; processes that are exceeding their
55 resident set size will be more likely to have physical memory
58 #define RLIMIT_RSS __RLIMIT_RSS
60 /* Number of open files. */
62 __RLIMIT_OFILE
= RLIMIT_NOFILE
, /* BSD name for same. */
63 #define RLIMIT_NOFILE RLIMIT_NOFILE
64 #define RLIMIT_OFILE __RLIMIT_OFILE
66 /* Address space limit (?) */
68 #define RLIMIT_AS RLIMIT_AS
70 /* Number of processes. */
72 #define RLIMIT_NPROC __RLIMIT_NPROC
74 /* Locked-in-memory address space. */
76 #define RLIMIT_MEMLOCK __RLIMIT_MEMLOCK
78 /* Maximum number of file locks. */
80 #define RLIMIT_LOCKS __RLIMIT_LOCKS
82 /* Maximum number of pending signals. */
83 __RLIMIT_SIGPENDING
= 11,
84 #define RLIMIT_SIGPENDING __RLIMIT_SIGPENDING
86 /* Maximum bytes in POSIX message queues. */
87 __RLIMIT_MSGQUEUE
= 12,
88 #define RLIMIT_MSGQUEUE __RLIMIT_MSGQUEUE
90 /* Maximum nice priority allowed to raise to.
91 Nice levels 19 .. -20 correspond to 0 .. 39
92 values of this resource limit. */
94 #define RLIMIT_NICE __RLIMIT_NICE
96 /* Maximum realtime priority allowed for non-priviledged
99 #define RLIMIT_RTPRIO __RLIMIT_RTPRIO
101 /* Maximum CPU time in microseconds that a process scheduled under a real-time
102 scheduling policy may consume without making a blocking system
103 call before being forcibly descheduled. */
104 __RLIMIT_RTTIME
= 15,
105 #define RLIMIT_RTTIME __RLIMIT_RTTIME
107 __RLIMIT_NLIMITS
= 16,
108 __RLIM_NLIMITS
= __RLIMIT_NLIMITS
109 #define RLIMIT_NLIMITS __RLIMIT_NLIMITS
110 #define RLIM_NLIMITS __RLIM_NLIMITS
113 /* Value to indicate that there is no limit. */
114 #if _MIPS_SIM == _ABI64
115 /* The N64 syscall uses this value. */
116 # define RLIM_INFINITY 0xffffffffffffffffUL
117 # ifdef __USE_LARGEFILE64
118 # define RLIM64_INFINITY 0xffffffffffffffffUL
121 /* The O32 and N32 syscalls use 0x7fffffff. */
122 # ifndef __USE_FILE_OFFSET64
123 # define RLIM_INFINITY ((long int)(~0UL >> 1))
125 # define RLIM_INFINITY 0xffffffffffffffffULL
127 # ifdef __USE_LARGEFILE64
128 # define RLIM64_INFINITY 0xffffffffffffffffULL
132 /* We can represent all limits. */
133 #define RLIM_SAVED_MAX RLIM_INFINITY
134 #define RLIM_SAVED_CUR RLIM_INFINITY
137 /* Type for resource quantity measurement. */
138 #ifndef __USE_FILE_OFFSET64
139 typedef __rlim_t rlim_t
;
141 typedef __rlim64_t rlim_t
;
143 #ifdef __USE_LARGEFILE64
144 typedef __rlim64_t rlim64_t
;
149 /* The current (soft) limit. */
151 /* The hard limit. */
155 #ifdef __USE_LARGEFILE64
158 /* The current (soft) limit. */
160 /* The hard limit. */
165 /* Whose usage statistics do you want? */
168 /* The calling process. */
170 #define RUSAGE_SELF RUSAGE_SELF
172 /* All of its terminated child processes. */
174 #define RUSAGE_CHILDREN RUSAGE_CHILDREN
178 /* The calling thread. */
180 # define RUSAGE_THREAD RUSAGE_THREAD
181 /* Name for the same functionality on Solaris. */
182 # define RUSAGE_LWP RUSAGE_THREAD
186 #include <bits/types/struct_timeval.h>
187 #include <bits/types/struct_rusage.h>
189 /* Priority limits. */
190 #define PRIO_MIN -20 /* Minimum priority a process can have. */
191 #define PRIO_MAX 20 /* Maximum priority a process can have. */
193 /* The type of the WHICH argument to `getpriority' and `setpriority',
194 indicating what flavor of entity the WHO argument specifies. */
195 enum __priority_which
197 PRIO_PROCESS
= 0, /* WHO is a process ID. */
198 #define PRIO_PROCESS PRIO_PROCESS
199 PRIO_PGRP
= 1, /* WHO is a process group ID. */
200 #define PRIO_PGRP PRIO_PGRP
201 PRIO_USER
= 2 /* WHO is a user ID. */
202 #define PRIO_USER PRIO_USER
209 /* Modify and return resource limits of a process atomically. */
210 # ifndef __USE_FILE_OFFSET64
211 extern int prlimit (__pid_t __pid
, enum __rlimit_resource __resource
,
212 const struct rlimit
*__new_limit
,
213 struct rlimit
*__old_limit
) __THROW
;
215 # ifdef __REDIRECT_NTH
216 extern int __REDIRECT_NTH (prlimit
, (__pid_t __pid
,
217 enum __rlimit_resource __resource
,
218 const struct rlimit
*__new_limit
,
219 struct rlimit
*__old_limit
), prlimit64
);
221 # define prlimit prlimit64
224 # ifdef __USE_LARGEFILE64
225 extern int prlimit64 (__pid_t __pid
, enum __rlimit_resource __resource
,
226 const struct rlimit64
*__new_limit
,
227 struct rlimit64
*__old_limit
) __THROW
;