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1 | /* Bit values & structures for resource limits. Linux/MIPS version. |
2 | Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2004 | |
3 | Free Software Foundation, Inc. | |
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 | |
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. | |
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 | |
14 | Lesser General Public License for more details. | |
15 | ||
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. */ | |
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. */ | |
59 | __RLIMIT_RSS = 7, | |
60 | #define RLIMIT_RSS __RLIMIT_RSS | |
61 | ||
62 | /* Number of open files. */ | |
63 | RLIMIT_NOFILE = 5, | |
64 | __RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same. */ | |
65 | #define RLIMIT_NOFILE RLIMIT_NOFILE | |
66 | #define RLIMIT_OFILE __RLIMIT_OFILE | |
67 | ||
68 | /* Address space limit (?) */ | |
69 | RLIMIT_AS = 6, | |
70 | #define RLIMIT_AS RLIMIT_AS | |
71 | ||
72 | /* Number of processes. */ | |
73 | __RLIMIT_NPROC = 8, | |
74 | #define RLIMIT_NPROC __RLIMIT_NPROC | |
75 | ||
76 | /* Locked-in-memory address space. */ | |
77 | __RLIMIT_MEMLOCK = 9, | |
78 | #define RLIMIT_MEMLOCK __RLIMIT_MEMLOCK | |
79 | ||
80 | /* Maximum number of file locks. */ | |
81 | __RLIMIT_LOCKS = 10, | |
82 | #define RLIMIT_LOCKS __RLIMIT_LOCKS | |
83 | ||
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 | ||
92 | __RLIMIT_NLIMITS = 13, | |
93 | __RLIM_NLIMITS = __RLIMIT_NLIMITS | |
94 | #define RLIMIT_NLIMITS __RLIMIT_NLIMITS | |
95 | #define RLIM_NLIMITS __RLIM_NLIMITS | |
96 | }; | |
97 | ||
98 | /* Value to indicate that there is no limit. */ | |
99 | #ifndef __USE_FILE_OFFSET64 | |
100 | # define RLIM_INFINITY ((long int)(~0UL >> 1)) | |
101 | #else | |
102 | # define RLIM_INFINITY 0x7fffffffffffffffLL | |
103 | #endif | |
104 | ||
105 | #ifdef __USE_LARGEFILE64 | |
106 | # define RLIM64_INFINITY 0x7fffffffffffffffLL | |
107 | #endif | |
108 | ||
109 | /* We can represent all limits. */ | |
110 | #define RLIM_SAVED_MAX RLIM_INFINITY | |
111 | #define RLIM_SAVED_CUR RLIM_INFINITY | |
112 | ||
113 | ||
114 | /* Type for resource quantity measurement. */ | |
115 | #ifndef __USE_FILE_OFFSET64 | |
116 | typedef __rlim_t rlim_t; | |
117 | #else | |
118 | typedef __rlim64_t rlim_t; | |
119 | #endif | |
120 | #ifdef __USE_LARGEFILE64 | |
121 | typedef __rlim64_t rlim64_t; | |
122 | #endif | |
123 | ||
124 | struct rlimit | |
125 | { | |
126 | /* The current (soft) limit. */ | |
127 | rlim_t rlim_cur; | |
128 | /* The hard limit. */ | |
129 | rlim_t rlim_max; | |
130 | }; | |
131 | ||
132 | #ifdef __USE_LARGEFILE64 | |
133 | struct rlimit64 | |
134 | { | |
135 | /* The current (soft) limit. */ | |
136 | rlim64_t rlim_cur; | |
137 | /* The hard limit. */ | |
138 | rlim64_t rlim_max; | |
139 | }; | |
140 | #endif | |
141 | ||
142 | /* Whose usage statistics do you want? */ | |
143 | enum __rusage_who | |
144 | { | |
145 | /* The calling process. */ | |
146 | RUSAGE_SELF = 0, | |
147 | #define RUSAGE_SELF RUSAGE_SELF | |
148 | ||
149 | /* All of its terminated child processes. */ | |
150 | RUSAGE_CHILDREN = -1 | |
151 | #define RUSAGE_CHILDREN RUSAGE_CHILDREN | |
152 | }; | |
153 | ||
154 | #define __need_timeval | |
155 | #include <bits/time.h> /* For `struct timeval'. */ | |
156 | ||
157 | /* Structure which says how much of each resource has been used. */ | |
158 | struct rusage | |
159 | { | |
160 | /* Total amount of user time used. */ | |
161 | struct timeval ru_utime; | |
162 | /* Total amount of system time used. */ | |
163 | struct timeval ru_stime; | |
164 | /* Maximum resident set size (in kilobytes). */ | |
165 | long int ru_maxrss; | |
166 | /* Amount of sharing of text segment memory | |
167 | with other processes (kilobyte-seconds). */ | |
168 | long int ru_ixrss; | |
169 | /* Amount of data segment memory used (kilobyte-seconds). */ | |
170 | long int ru_idrss; | |
171 | /* Amount of stack memory used (kilobyte-seconds). */ | |
172 | long int ru_isrss; | |
173 | /* Number of soft page faults (i.e. those serviced by reclaiming | |
174 | a page from the list of pages awaiting reallocation. */ | |
175 | long int ru_minflt; | |
176 | /* Number of hard page faults (i.e. those that required I/O). */ | |
177 | long int ru_majflt; | |
178 | /* Number of times a process was swapped out of physical memory. */ | |
179 | long int ru_nswap; | |
180 | /* Number of input operations via the file system. Note: This | |
181 | and `ru_oublock' do not include operations with the cache. */ | |
182 | long int ru_inblock; | |
183 | /* Number of output operations via the file system. */ | |
184 | long int ru_oublock; | |
185 | /* Number of IPC messages sent. */ | |
186 | long int ru_msgsnd; | |
187 | /* Number of IPC messages received. */ | |
188 | long int ru_msgrcv; | |
189 | /* Number of signals delivered. */ | |
190 | long int ru_nsignals; | |
191 | /* Number of voluntary context switches, i.e. because the process | |
192 | gave up the process before it had to (usually to wait for some | |
193 | resource to be available). */ | |
194 | long int ru_nvcsw; | |
195 | /* Number of involuntary context switches, i.e. a higher priority process | |
196 | became runnable or the current process used up its time slice. */ | |
197 | long int ru_nivcsw; | |
198 | }; | |
199 | ||
200 | /* Priority limits. */ | |
201 | #define PRIO_MIN -20 /* Minimum priority a process can have. */ | |
202 | #define PRIO_MAX 20 /* Maximum priority a process can have. */ | |
203 | ||
204 | /* The type of the WHICH argument to `getpriority' and `setpriority', | |
205 | indicating what flavor of entity the WHO argument specifies. */ | |
206 | enum __priority_which | |
207 | { | |
208 | PRIO_PROCESS = 0, /* WHO is a process ID. */ | |
209 | #define PRIO_PROCESS PRIO_PROCESS | |
210 | PRIO_PGRP = 1, /* WHO is a process group ID. */ | |
211 | #define PRIO_PGRP PRIO_PGRP | |
212 | PRIO_USER = 2 /* WHO is a user ID. */ | |
213 | #define PRIO_USER PRIO_USER | |
214 | }; |