1 /* Bit values & structures for resource limits. Linux/SPARC version. 2 Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2004, 2005 3 Free Software Foundation, Inc. 4 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. 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 Lesser General Public License for more details. 14 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 <http://www.gnu.org/licenses/>. */ 18 19 #ifndef _SYS_RESOURCE_H 20 # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead." 21 #endif 22 23 #include <bits/types.h> 24 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. */ 29 30 /* Kinds of resource limit. */ 31 enum __rlimit_resource 32 { 33 /* Per-process CPU limit, in seconds. */ 34 RLIMIT_CPU = 0, 35 #define RLIMIT_CPU RLIMIT_CPU 36 37 /* Largest file that can be created, in bytes. */ 38 RLIMIT_FSIZE = 1, 39 #define RLIMIT_FSIZE RLIMIT_FSIZE 40 41 /* Maximum size of data segment, in bytes. */ 42 RLIMIT_DATA = 2, 43 #define RLIMIT_DATA RLIMIT_DATA 44 45 /* Maximum size of stack segment, in bytes. */ 46 RLIMIT_STACK = 3, 47 #define RLIMIT_STACK RLIMIT_STACK 48 49 /* Largest core file that can be created, in bytes. */ 50 RLIMIT_CORE = 4, 51 #define RLIMIT_CORE RLIMIT_CORE 52 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 56 taken from them. */ 57 __RLIMIT_RSS = 5, 58 #define RLIMIT_RSS __RLIMIT_RSS 59 60 /* Number of open files. */ 61 RLIMIT_NOFILE = 6, 62 __RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same. */ 63 #define RLIMIT_NOFILE RLIMIT_NOFILE 64 #define RLIMIT_OFILE __RLIMIT_OFILE 65 66 /* Address space limit (?) */ 67 RLIMIT_AS = 9, 68 #define RLIMIT_AS RLIMIT_AS 69 70 /* Number of processes. */ 71 __RLIMIT_NPROC = 7, 72 #define RLIMIT_NPROC __RLIMIT_NPROC 73 74 /* Locked-in-memory address space. */ 75 __RLIMIT_MEMLOCK = 8, 76 #define RLIMIT_MEMLOCK __RLIMIT_MEMLOCK 77 78 /* Maximum number of file locks. */ 79 __RLIMIT_LOCKS = 10, 80 #define RLIMIT_LOCKS __RLIMIT_LOCKS 81 82 /* Maximum number of pending signals. */ 83 __RLIMIT_SIGPENDING = 11, 84 #define RLIMIT_SIGPENDING __RLIMIT_SIGPENDING 85 86 /* Maximum bytes in POSIX message queues. */ 87 __RLIMIT_MSGQUEUE = 12, 88 #define RLIMIT_MSGQUEUE __RLIMIT_MSGQUEUE 89 90 /* Maximum nice priority allowed to raise to. 91 Nice levels 19 .. -20 correspond to 0 .. 39 92 values of this resource limit. */ 93 __RLIMIT_NICE = 13, 94 #define RLIMIT_NICE __RLIMIT_NICE 95 96 /* Maximum realtime priority allowed for non-priviledged 97 processes. */ 98 __RLIMIT_RTPRIO = 14, 99 #define RLIMIT_RTPRIO __RLIMIT_RTPRIO 100 101 /* Maximum CPU time in µs 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 106 107 __RLIMIT_NLIMITS = 16, 108 __RLIM_NLIMITS = __RLIMIT_NLIMITS 109 #define RLIMIT_NLIMITS __RLIMIT_NLIMITS 110 #define RLIM_NLIMITS __RLIM_NLIMITS 111 }; 112 113 /* Value to indicate that there is no limit. */ 114 #if __WORDSIZE == 64 115 116 #ifndef __USE_FILE_OFFSET64 117 # define RLIM_INFINITY ((unsigned long int)(~0UL)) 118 #else 119 # define RLIM_INFINITY 0xffffffffffffffffuLL 120 #endif 121 122 #ifdef __USE_LARGEFILE64 123 # define RLIM64_INFINITY 0xffffffffffffffffuLL 124 #endif 125 126 #else 127 128 #ifndef __USE_FILE_OFFSET64 129 # define RLIM_INFINITY ((long int)(~0UL >> 1)) 130 #else 131 # define RLIM_INFINITY 0xffffffffffffffffULL 132 #endif 133 134 #ifdef __USE_LARGEFILE64 135 # define RLIM64_INFINITY 0xffffffffffffffffULL 136 #endif 137 138 #endif 139 140 /* We can represent all limits. */ 141 #define RLIM_SAVED_MAX RLIM_INFINITY 142 #define RLIM_SAVED_CUR RLIM_INFINITY 143 144 145 /* Type for resource quantity measurement. */ 146 #ifndef __USE_FILE_OFFSET64 147 typedef __rlim_t rlim_t; 148 #else 149 typedef __rlim64_t rlim_t; 150 #endif 151 #ifdef __USE_LARGEFILE64 152 typedef __rlim64_t rlim64_t; 153 #endif 154 155 struct rlimit 156 { 157 /* The current (soft) limit. */ 158 rlim_t rlim_cur; 159 /* The hard limit. */ 160 rlim_t rlim_max; 161 }; 162 163 #ifdef __USE_LARGEFILE64 164 struct rlimit64 165 { 166 /* The current (soft) limit. */ 167 rlim64_t rlim_cur; 168 /* The hard limit. */ 169 rlim64_t rlim_max; 170 }; 171 #endif 172 173 /* Whose usage statistics do you want? */ 174 enum __rusage_who 175 { 176 /* The calling process. */ 177 RUSAGE_SELF = 0, 178 #define RUSAGE_SELF RUSAGE_SELF 179 180 /* All of its terminated child processes. */ 181 RUSAGE_CHILDREN = -1 182 #define RUSAGE_CHILDREN RUSAGE_CHILDREN 183 184 #ifdef __USE_GNU 185 , 186 /* The calling thread. */ 187 RUSAGE_THREAD = 1 188 # define RUSAGE_THREAD RUSAGE_THREAD 189 /* Name for the same functionality on Solaris. */ 190 # define RUSAGE_LWP RUSAGE_THREAD 191 #endif 192 }; 193 194 #define __need_timeval 195 #include <bits/time.h> /* For `struct timeval'. */ 196 197 /* Structure which says how much of each resource has been used. */ 198 struct rusage 199 { 200 /* Total amount of user time used. */ 201 struct timeval ru_utime; 202 /* Total amount of system time used. */ 203 struct timeval ru_stime; 204 /* Maximum resident set size (in kilobytes). */ 205 long int ru_maxrss; 206 /* Amount of sharing of text segment memory 207 with other processes (kilobyte-seconds). */ 208 long int ru_ixrss; 209 /* Amount of data segment memory used (kilobyte-seconds). */ 210 long int ru_idrss; 211 /* Amount of stack memory used (kilobyte-seconds). */ 212 long int ru_isrss; 213 /* Number of soft page faults (i.e. those serviced by reclaiming 214 a page from the list of pages awaiting reallocation. */ 215 long int ru_minflt; 216 /* Number of hard page faults (i.e. those that required I/O). */ 217 long int ru_majflt; 218 /* Number of times a process was swapped out of physical memory. */ 219 long int ru_nswap; 220 /* Number of input operations via the file system. Note: This 221 and `ru_oublock' do not include operations with the cache. */ 222 long int ru_inblock; 223 /* Number of output operations via the file system. */ 224 long int ru_oublock; 225 /* Number of IPC messages sent. */ 226 long int ru_msgsnd; 227 /* Number of IPC messages received. */ 228 long int ru_msgrcv; 229 /* Number of signals delivered. */ 230 long int ru_nsignals; 231 /* Number of voluntary context switches, i.e. because the process 232 gave up the process before it had to (usually to wait for some 233 resource to be available). */ 234 long int ru_nvcsw; 235 /* Number of involuntary context switches, i.e. a higher priority process 236 became runnable or the current process used up its time slice. */ 237 long int ru_nivcsw; 238 }; 239 240 /* Priority limits. */ 241 #define PRIO_MIN -20 /* Minimum priority a process can have. */ 242 #define PRIO_MAX 20 /* Maximum priority a process can have. */ 243 244 /* The type of the WHICH argument to `getpriority' and `setpriority', 245 indicating what flavor of entity the WHO argument specifies. */ 246 enum __priority_which 247 { 248 PRIO_PROCESS = 0, /* WHO is a process ID. */ 249 #define PRIO_PROCESS PRIO_PROCESS 250 PRIO_PGRP = 1, /* WHO is a process group ID. */ 251 #define PRIO_PGRP PRIO_PGRP 252 PRIO_USER = 2 /* WHO is a user ID. */ 253 #define PRIO_USER PRIO_USER 254 }; 255