1 /* Bit values & structures for resource limits. Linux version.
2 Copyright (C) 1994, 1996, 1997, 1998, 1999 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 Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 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 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #ifndef _SYS_RESOURCE_H
21 # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead."
24 #include <asm/resource.h>
25 #include <bits/types.h>
27 /* Transmute defines to enumerations. The macro re-definitions are
28 necessary because some programs want to test for operating system
29 features with #ifdef RUSAGE_SELF. In ISO C the reflexive
30 definition is a no-op. */
32 /* Kinds of resource limit. */
33 enum __rlimit_resource
35 /* Per-process CPU limit, in seconds. */
36 _RLIMIT_CPU
= RLIMIT_CPU
,
38 RLIMIT_CPU
= _RLIMIT_CPU
,
39 #define RLIMIT_CPU RLIMIT_CPU
41 /* Largest file that can be created, in bytes. */
42 _RLIMIT_FSIZE
= RLIMIT_FSIZE
,
44 RLIMIT_FSIZE
= _RLIMIT_FSIZE
,
45 #define RLIMIT_FSIZE RLIMIT_FSIZE
47 /* Maximum size of data segment, in bytes. */
48 _RLIMIT_DATA
= RLIMIT_DATA
,
50 RLIMIT_DATA
= _RLIMIT_DATA
,
51 #define RLIMIT_DATA RLIMIT_DATA
53 /* Maximum size of stack segment, in bytes. */
54 _RLIMIT_STACK
= RLIMIT_STACK
,
56 RLIMIT_STACK
= _RLIMIT_STACK
,
57 #define RLIMIT_STACK RLIMIT_STACK
59 /* Largest core file that can be created, in bytes. */
60 _RLIMIT_CORE
= RLIMIT_CORE
,
62 RLIMIT_CORE
= _RLIMIT_CORE
,
63 #define RLIMIT_CORE RLIMIT_CORE
65 /* Largest resident set size, in bytes.
66 This affects swapping; processes that are exceeding their
67 resident set size will be more likely to have physical memory
69 _RLIMIT_RSS
= RLIMIT_RSS
,
71 RLIMIT_RSS
= _RLIMIT_RSS
,
72 #define RLIMIT_RSS RLIMIT_RSS
74 /* Number of open files. */
75 _RLIMIT_NOFILE
= RLIMIT_NOFILE
,
77 RLIMIT_NOFILE
= _RLIMIT_NOFILE
,
78 RLIMIT_OFILE
= RLIMIT_NOFILE
, /* BSD name for same. */
79 #define RLIMIT_NOFILE RLIMIT_NOFILE
80 #define RLIMIT_OFILE RLIMIT_OFILE
82 /* Address space limit (?) */
83 _RLIMIT_AS
= RLIMIT_AS
,
85 RLIMIT_AS
= _RLIMIT_AS
,
86 #define RLIMIT_AS RLIMIT_AS
88 /* Number of processes. */
89 _RLIMIT_NPROC
= RLIMIT_NPROC
,
91 RLIMIT_NPROC
= _RLIMIT_NPROC
,
92 #define RLIMIT_NPROC RLIMIT_NPROC
94 /* Locked-in-memory address space. */
95 _RLIMIT_MEMLOCK
= RLIMIT_MEMLOCK
,
97 RLIMIT_MEMLOCK
= _RLIMIT_MEMLOCK
,
98 #define RLIMIT_MEMLOCK RLIMIT_MEMLOCK
100 RLIMIT_NLIMITS
= RLIM_NLIMITS
,
102 RLIM_NLIMITS
= RLIMIT_NLIMITS
103 #define RLIMIT_NLIMITS RLIMIT_NLIMITS
104 #define RLIM_NLIMITS RLIM_NLIMITS
107 /* Value to indicate that there is no limit. */
108 #ifndef __USE_FILE_OFFSET64
109 # define RLIM_INFINITY ((unsigned long int)(~0UL))
111 # define RLIM_INFINITY 0xffffffffffffffffuLL
114 #ifdef __USE_LARGEFILE64
115 # define RLIM64_INFINITY 0xffffffffffffffffuLL
118 /* We can represent all limits. */
119 #define RLIM_SAVED_MAX RLIM_INFINITY
120 #define RLIM_SAVED_CUR RLIM_INFINITY
123 /* Type for resource quantity measurement. */
124 #ifndef __USE_FILE_OFFSET64
125 typedef __rlim_t rlim_t
;
127 typedef __rlim64_t rlim_t
;
129 #ifdef __USE_LARGEFILE64
130 typedef __rlim64_t rlim64_t
;
135 /* The current (soft) limit. */
137 /* The hard limit. */
141 #ifdef __USE_LARGEFILE64
144 /* The current (soft) limit. */
146 /* The hard limit. */
151 /* Whose usage statistics do you want? */
154 /* The calling process. */
156 #define RUSAGE_SELF RUSAGE_SELF
158 /* All of its terminated child processes. */
159 RUSAGE_CHILDREN
= -1,
160 #define RUSAGE_CHILDREN RUSAGE_CHILDREN
164 #define RUSAGE_BOTH RUSAGE_BOTH
167 #define __need_timeval
168 #include <bits/time.h> /* For `struct timeval'. */
170 /* Structure which says how much of each resource has been used. */
173 /* Total amount of user time used. */
174 struct timeval ru_utime
;
175 /* Total amount of system time used. */
176 struct timeval ru_stime
;
177 /* Maximum resident set size (in kilobytes). */
179 /* Amount of sharing of text segment memory
180 with other processes (kilobyte-seconds). */
182 /* Amount of data segment memory used (kilobyte-seconds). */
184 /* Amount of stack memory used (kilobyte-seconds). */
186 /* Number of soft page faults (i.e. those serviced by reclaiming
187 a page from the list of pages awaiting reallocation. */
189 /* Number of hard page faults (i.e. those that required I/O). */
191 /* Number of times a process was swapped out of physical memory. */
193 /* Number of input operations via the file system. Note: This
194 and `ru_oublock' do not include operations with the cache. */
196 /* Number of output operations via the file system. */
198 /* Number of IPC messages sent. */
200 /* Number of IPC messages received. */
202 /* Number of signals delivered. */
203 long int ru_nsignals
;
204 /* Number of voluntary context switches, i.e. because the process
205 gave up the process before it had to (usually to wait for some
206 resource to be available). */
208 /* Number of involuntary context switches, i.e. a higher priority process
209 became runnable or the current process used up its time slice. */
213 /* Priority limits. */
214 #define PRIO_MIN -20 /* Minimum priority a process can have. */
215 #define PRIO_MAX 20 /* Maximum priority a process can have. */
217 /* The type of the WHICH argument to `getpriority' and `setpriority',
218 indicating what flavor of entity the WHO argument specifies. */
219 enum __priority_which
221 PRIO_PROCESS
= 0, /* WHO is a process ID. */
222 #define PRIO_PROCESS PRIO_PROCESS
223 PRIO_PGRP
= 1, /* WHO is a process group ID. */
224 #define PRIO_PGRP PRIO_PGRP
225 PRIO_USER
= 2 /* WHO is a user ID. */
226 #define PRIO_USER PRIO_USER