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b555e31b | 1 | /* Bit values & structures for resource limits. Alpha/Linux version. |
5e742931 | 2 | Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2004, 2005 |
744a7b20 | 3 | Free Software Foundation, Inc. |
b555e31b UD |
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 | |
3214b89b AJ |
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. | |
b555e31b UD |
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 | |
3214b89b | 14 | Lesser General Public License for more details. |
b555e31b | 15 | |
3214b89b AJ |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 | 02111-1307 USA. */ | |
b555e31b UD |
20 | |
21 | #ifndef _SYS_RESOURCE_H | |
22 | # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead." | |
23 | #endif | |
24 | ||
25 | #include <bits/types.h> | |
26 | ||
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. */ | |
31 | ||
32 | /* Kinds of resource limit. */ | |
33 | enum __rlimit_resource | |
34 | { | |
35 | /* Per-process CPU limit, in seconds. */ | |
36 | RLIMIT_CPU = 0, | |
37 | #define RLIMIT_CPU RLIMIT_CPU | |
38 | ||
39 | /* Largest file that can be created, in bytes. */ | |
40 | RLIMIT_FSIZE = 1, | |
41 | #define RLIMIT_FSIZE RLIMIT_FSIZE | |
42 | ||
43 | /* Maximum size of data segment, in bytes. */ | |
44 | RLIMIT_DATA = 2, | |
45 | #define RLIMIT_DATA RLIMIT_DATA | |
46 | ||
47 | /* Maximum size of stack segment, in bytes. */ | |
48 | RLIMIT_STACK = 3, | |
49 | #define RLIMIT_STACK RLIMIT_STACK | |
50 | ||
51 | /* Largest core file that can be created, in bytes. */ | |
52 | RLIMIT_CORE = 4, | |
53 | #define RLIMIT_CORE RLIMIT_CORE | |
54 | ||
55 | /* Largest resident set size, in bytes. | |
56 | This affects swapping; processes that are exceeding their | |
57 | resident set size will be more likely to have physical memory | |
58 | taken from them. */ | |
744a7b20 UD |
59 | __RLIMIT_RSS = 5, |
60 | #define RLIMIT_RSS __RLIMIT_RSS | |
b555e31b UD |
61 | |
62 | /* Number of open files. */ | |
63 | RLIMIT_NOFILE = 6, | |
744a7b20 | 64 | __RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same. */ |
b555e31b | 65 | #define RLIMIT_NOFILE RLIMIT_NOFILE |
744a7b20 | 66 | #define RLIMIT_OFILE __RLIMIT_OFILE |
b555e31b UD |
67 | |
68 | /* Address space limit (?) */ | |
69 | RLIMIT_AS = 7, | |
70 | #define RLIMIT_AS RLIMIT_AS | |
71 | ||
72 | /* Number of processes. */ | |
744a7b20 UD |
73 | __RLIMIT_NPROC = 8, |
74 | #define RLIMIT_NPROC __RLIMIT_NPROC | |
b555e31b UD |
75 | |
76 | /* Locked-in-memory address space. */ | |
744a7b20 UD |
77 | __RLIMIT_MEMLOCK = 9, |
78 | #define RLIMIT_MEMLOCK __RLIMIT_MEMLOCK | |
b555e31b | 79 | |
f0cd8b6f | 80 | /* Maximum number of file locks. */ |
744a7b20 UD |
81 | __RLIMIT_LOCKS = 10, |
82 | #define RLIMIT_LOCKS __RLIMIT_LOCKS | |
f0cd8b6f | 83 | |
744a7b20 UD |
84 | /* Maximum number of pending signals. */ |
85 | __RLIMIT_SIGPENDING = 11, | |
86 | #define RLIMIT_SIGPENDING __RLIMIT_SIGPENDING | |
87 | ||
88 | /* Maximum bytes in POSIX message queues. */ | |
89 | __RLIMIT_MSGQUEUE = 12, | |
90 | #define RLIMIT_MSGQUEUE __RLIMIT_MSGQUEUE | |
91 | ||
5e742931 UD |
92 | /* Maximum nice priority allowed to raise to. |
93 | Nice levels 19 .. -20 correspond to 0 .. 39 | |
94 | values of this resource limit. */ | |
95 | __RLIMIT_NICE = 13, | |
96 | #define RLIMIT_NICE __RLIMIT_NICE | |
97 | ||
98 | /* Maximum realtime priority allowed for non-priviledged | |
99 | processes. */ | |
100 | __RLIMIT_RTPRIO = 14, | |
baee7540 | 101 | #define RLIMIT_RTPRIO __RLIMIT_RTPRIO |
5e742931 UD |
102 | |
103 | __RLIMIT_NLIMITS = 15, | |
744a7b20 UD |
104 | __RLIM_NLIMITS = __RLIMIT_NLIMITS |
105 | #define RLIMIT_NLIMITS __RLIMIT_NLIMITS | |
106 | #define RLIM_NLIMITS __RLIM_NLIMITS | |
b555e31b UD |
107 | }; |
108 | ||
109 | /* Value to indicate that there is no limit. */ | |
110 | #ifndef __USE_FILE_OFFSET64 | |
111 | # define RLIM_INFINITY ((long int)(~0UL >> 1)) | |
112 | #else | |
113 | # define RLIM_INFINITY 0x7fffffffffffffffLL | |
114 | #endif | |
115 | ||
116 | #ifdef __USE_LARGEFILE64 | |
117 | # define RLIM64_INFINITY 0x7fffffffffffffffLL | |
118 | #endif | |
119 | ||
120 | /* We can represent all limits. */ | |
121 | #define RLIM_SAVED_MAX RLIM_INFINITY | |
122 | #define RLIM_SAVED_CUR RLIM_INFINITY | |
123 | ||
124 | ||
125 | /* Type for resource quantity measurement. */ | |
126 | #ifndef __USE_FILE_OFFSET64 | |
127 | typedef __rlim_t rlim_t; | |
128 | #else | |
129 | typedef __rlim64_t rlim_t; | |
130 | #endif | |
131 | #ifdef __USE_LARGEFILE64 | |
132 | typedef __rlim64_t rlim64_t; | |
133 | #endif | |
134 | ||
135 | struct rlimit | |
136 | { | |
137 | /* The current (soft) limit. */ | |
138 | rlim_t rlim_cur; | |
139 | /* The hard limit. */ | |
140 | rlim_t rlim_max; | |
141 | }; | |
142 | ||
143 | #ifdef __USE_LARGEFILE64 | |
144 | struct rlimit64 | |
145 | { | |
146 | /* The current (soft) limit. */ | |
147 | rlim64_t rlim_cur; | |
148 | /* The hard limit. */ | |
149 | rlim64_t rlim_max; | |
150 | }; | |
151 | #endif | |
152 | ||
153 | /* Whose usage statistics do you want? */ | |
154 | enum __rusage_who | |
155 | { | |
156 | /* The calling process. */ | |
157 | RUSAGE_SELF = 0, | |
158 | #define RUSAGE_SELF RUSAGE_SELF | |
159 | ||
160 | /* All of its terminated child processes. */ | |
b38a9099 | 161 | RUSAGE_CHILDREN = -1, |
b555e31b | 162 | #define RUSAGE_CHILDREN RUSAGE_CHILDREN |
b38a9099 UD |
163 | |
164 | #ifdef __USE_GNU | |
165 | /* The calling thread. */ | |
166 | RUSAGE_THREAD = 1 | |
167 | # define RUSAGE_THREAD RUSAGE_THREAD | |
168 | /* Name for the same functionality on Solaris. */ | |
169 | # define RUSAGE_LWP RUSAGE_THREAD | |
170 | #endif | |
b555e31b UD |
171 | }; |
172 | ||
173 | #define __need_timeval | |
174 | #include <bits/time.h> /* For `struct timeval'. */ | |
175 | ||
176 | /* Structure which says how much of each resource has been used. */ | |
177 | struct rusage | |
178 | { | |
179 | /* Total amount of user time used. */ | |
180 | struct timeval ru_utime; | |
181 | /* Total amount of system time used. */ | |
182 | struct timeval ru_stime; | |
183 | /* Maximum resident set size (in kilobytes). */ | |
184 | long int ru_maxrss; | |
185 | /* Amount of sharing of text segment memory | |
186 | with other processes (kilobyte-seconds). */ | |
187 | long int ru_ixrss; | |
188 | /* Amount of data segment memory used (kilobyte-seconds). */ | |
189 | long int ru_idrss; | |
190 | /* Amount of stack memory used (kilobyte-seconds). */ | |
191 | long int ru_isrss; | |
192 | /* Number of soft page faults (i.e. those serviced by reclaiming | |
193 | a page from the list of pages awaiting reallocation. */ | |
194 | long int ru_minflt; | |
195 | /* Number of hard page faults (i.e. those that required I/O). */ | |
196 | long int ru_majflt; | |
197 | /* Number of times a process was swapped out of physical memory. */ | |
198 | long int ru_nswap; | |
199 | /* Number of input operations via the file system. Note: This | |
200 | and `ru_oublock' do not include operations with the cache. */ | |
201 | long int ru_inblock; | |
202 | /* Number of output operations via the file system. */ | |
203 | long int ru_oublock; | |
204 | /* Number of IPC messages sent. */ | |
205 | long int ru_msgsnd; | |
206 | /* Number of IPC messages received. */ | |
207 | long int ru_msgrcv; | |
208 | /* Number of signals delivered. */ | |
209 | long int ru_nsignals; | |
210 | /* Number of voluntary context switches, i.e. because the process | |
211 | gave up the process before it had to (usually to wait for some | |
212 | resource to be available). */ | |
213 | long int ru_nvcsw; | |
214 | /* Number of involuntary context switches, i.e. a higher priority process | |
215 | became runnable or the current process used up its time slice. */ | |
216 | long int ru_nivcsw; | |
217 | }; | |
218 | ||
219 | /* Priority limits. */ | |
220 | #define PRIO_MIN -20 /* Minimum priority a process can have. */ | |
221 | #define PRIO_MAX 20 /* Maximum priority a process can have. */ | |
222 | ||
223 | /* The type of the WHICH argument to `getpriority' and `setpriority', | |
224 | indicating what flavor of entity the WHO argument specifies. */ | |
225 | enum __priority_which | |
226 | { | |
227 | PRIO_PROCESS = 0, /* WHO is a process ID. */ | |
228 | #define PRIO_PROCESS PRIO_PROCESS | |
229 | PRIO_PGRP = 1, /* WHO is a process group ID. */ | |
230 | #define PRIO_PGRP PRIO_PGRP | |
231 | PRIO_USER = 2 /* WHO is a user ID. */ | |
232 | #define PRIO_USER PRIO_USER | |
233 | }; |