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1 | /* Bit values & structures for resource limits. Alpha/Linux version. |
2 | Copyright (C) 1994, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
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. */ | |
19 | ||
20 | #ifndef _SYS_RESOURCE_H | |
21 | # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead." | |
22 | #endif | |
23 | ||
24 | #include <bits/types.h> | |
25 | ||
26 | /* Transmute defines to enumerations. The macro re-definitions are | |
27 | necessary because some programs want to test for operating system | |
28 | features with #ifdef RUSAGE_SELF. In ISO C the reflexive | |
29 | definition is a no-op. */ | |
30 | ||
31 | /* Kinds of resource limit. */ | |
32 | enum __rlimit_resource | |
33 | { | |
34 | /* Per-process CPU limit, in seconds. */ | |
35 | RLIMIT_CPU = 0, | |
36 | #define RLIMIT_CPU RLIMIT_CPU | |
37 | ||
38 | /* Largest file that can be created, in bytes. */ | |
39 | RLIMIT_FSIZE = 1, | |
40 | #define RLIMIT_FSIZE RLIMIT_FSIZE | |
41 | ||
42 | /* Maximum size of data segment, in bytes. */ | |
43 | RLIMIT_DATA = 2, | |
44 | #define RLIMIT_DATA RLIMIT_DATA | |
45 | ||
46 | /* Maximum size of stack segment, in bytes. */ | |
47 | RLIMIT_STACK = 3, | |
48 | #define RLIMIT_STACK RLIMIT_STACK | |
49 | ||
50 | /* Largest core file that can be created, in bytes. */ | |
51 | RLIMIT_CORE = 4, | |
52 | #define RLIMIT_CORE RLIMIT_CORE | |
53 | ||
54 | /* Largest resident set size, in bytes. | |
55 | This affects swapping; processes that are exceeding their | |
56 | resident set size will be more likely to have physical memory | |
57 | taken from them. */ | |
58 | RLIMIT_RSS = 5, | |
59 | #define RLIMIT_RSS RLIMIT_RSS | |
60 | ||
61 | /* Number of open files. */ | |
62 | RLIMIT_NOFILE = 6, | |
63 | RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same. */ | |
64 | #define RLIMIT_NOFILE RLIMIT_NOFILE | |
65 | #define RLIMIT_OFILE RLIMIT_OFILE | |
66 | ||
67 | /* Address space limit (?) */ | |
68 | RLIMIT_AS = 7, | |
69 | #define RLIMIT_AS RLIMIT_AS | |
70 | ||
71 | /* Number of processes. */ | |
72 | RLIMIT_NPROC = 8, | |
73 | #define RLIMIT_NPROC RLIMIT_NPROC | |
74 | ||
75 | /* Locked-in-memory address space. */ | |
76 | RLIMIT_MEMLOCK = 9, | |
77 | #define RLIMIT_MEMLOCK RLIMIT_MEMLOCK | |
78 | ||
79 | RLIM_NLIMITS = 10 | |
80 | #define RLIMIT_NLIMITS RLIMIT_NLIMITS | |
81 | #define RLIM_NLIMITS RLIM_NLIMITS | |
82 | }; | |
83 | ||
84 | /* Value to indicate that there is no limit. */ | |
85 | #ifndef __USE_FILE_OFFSET64 | |
86 | # define RLIM_INFINITY ((long int)(~0UL >> 1)) | |
87 | #else | |
88 | # define RLIM_INFINITY 0x7fffffffffffffffLL | |
89 | #endif | |
90 | ||
91 | #ifdef __USE_LARGEFILE64 | |
92 | # define RLIM64_INFINITY 0x7fffffffffffffffLL | |
93 | #endif | |
94 | ||
95 | /* We can represent all limits. */ | |
96 | #define RLIM_SAVED_MAX RLIM_INFINITY | |
97 | #define RLIM_SAVED_CUR RLIM_INFINITY | |
98 | ||
99 | ||
100 | /* Type for resource quantity measurement. */ | |
101 | #ifndef __USE_FILE_OFFSET64 | |
102 | typedef __rlim_t rlim_t; | |
103 | #else | |
104 | typedef __rlim64_t rlim_t; | |
105 | #endif | |
106 | #ifdef __USE_LARGEFILE64 | |
107 | typedef __rlim64_t rlim64_t; | |
108 | #endif | |
109 | ||
110 | struct rlimit | |
111 | { | |
112 | /* The current (soft) limit. */ | |
113 | rlim_t rlim_cur; | |
114 | /* The hard limit. */ | |
115 | rlim_t rlim_max; | |
116 | }; | |
117 | ||
118 | #ifdef __USE_LARGEFILE64 | |
119 | struct rlimit64 | |
120 | { | |
121 | /* The current (soft) limit. */ | |
122 | rlim64_t rlim_cur; | |
123 | /* The hard limit. */ | |
124 | rlim64_t rlim_max; | |
125 | }; | |
126 | #endif | |
127 | ||
128 | /* Whose usage statistics do you want? */ | |
129 | enum __rusage_who | |
130 | { | |
131 | /* The calling process. */ | |
132 | RUSAGE_SELF = 0, | |
133 | #define RUSAGE_SELF RUSAGE_SELF | |
134 | ||
135 | /* All of its terminated child processes. */ | |
136 | RUSAGE_CHILDREN = -1, | |
137 | #define RUSAGE_CHILDREN RUSAGE_CHILDREN | |
138 | ||
139 | /* Both. */ | |
140 | RUSAGE_BOTH = -2 | |
141 | #define RUSAGE_BOTH RUSAGE_BOTH | |
142 | }; | |
143 | ||
144 | #define __need_timeval | |
145 | #include <bits/time.h> /* For `struct timeval'. */ | |
146 | ||
147 | /* Structure which says how much of each resource has been used. */ | |
148 | struct rusage | |
149 | { | |
150 | /* Total amount of user time used. */ | |
151 | struct timeval ru_utime; | |
152 | /* Total amount of system time used. */ | |
153 | struct timeval ru_stime; | |
154 | /* Maximum resident set size (in kilobytes). */ | |
155 | long int ru_maxrss; | |
156 | /* Amount of sharing of text segment memory | |
157 | with other processes (kilobyte-seconds). */ | |
158 | long int ru_ixrss; | |
159 | /* Amount of data segment memory used (kilobyte-seconds). */ | |
160 | long int ru_idrss; | |
161 | /* Amount of stack memory used (kilobyte-seconds). */ | |
162 | long int ru_isrss; | |
163 | /* Number of soft page faults (i.e. those serviced by reclaiming | |
164 | a page from the list of pages awaiting reallocation. */ | |
165 | long int ru_minflt; | |
166 | /* Number of hard page faults (i.e. those that required I/O). */ | |
167 | long int ru_majflt; | |
168 | /* Number of times a process was swapped out of physical memory. */ | |
169 | long int ru_nswap; | |
170 | /* Number of input operations via the file system. Note: This | |
171 | and `ru_oublock' do not include operations with the cache. */ | |
172 | long int ru_inblock; | |
173 | /* Number of output operations via the file system. */ | |
174 | long int ru_oublock; | |
175 | /* Number of IPC messages sent. */ | |
176 | long int ru_msgsnd; | |
177 | /* Number of IPC messages received. */ | |
178 | long int ru_msgrcv; | |
179 | /* Number of signals delivered. */ | |
180 | long int ru_nsignals; | |
181 | /* Number of voluntary context switches, i.e. because the process | |
182 | gave up the process before it had to (usually to wait for some | |
183 | resource to be available). */ | |
184 | long int ru_nvcsw; | |
185 | /* Number of involuntary context switches, i.e. a higher priority process | |
186 | became runnable or the current process used up its time slice. */ | |
187 | long int ru_nivcsw; | |
188 | }; | |
189 | ||
190 | /* Priority limits. */ | |
191 | #define PRIO_MIN -20 /* Minimum priority a process can have. */ | |
192 | #define PRIO_MAX 20 /* Maximum priority a process can have. */ | |
193 | ||
194 | /* The type of the WHICH argument to `getpriority' and `setpriority', | |
195 | indicating what flavor of entity the WHO argument specifies. */ | |
196 | enum __priority_which | |
197 | { | |
198 | PRIO_PROCESS = 0, /* WHO is a process ID. */ | |
199 | #define PRIO_PROCESS PRIO_PROCESS | |
200 | PRIO_PGRP = 1, /* WHO is a process group ID. */ | |
201 | #define PRIO_PGRP PRIO_PGRP | |
202 | PRIO_USER = 2 /* WHO is a user ID. */ | |
203 | #define PRIO_USER PRIO_USER | |
204 | }; |