1 /* Bit values & structures for resource limits. Linux/MIPS version. 2 Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2004, 2005, 2006 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 /* 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, 101 #define RLIMIT_RTPRIO __RLIMIT_RTPRIO 102 103 __RLIMIT_NLIMITS = 15, 104 __RLIM_NLIMITS = __RLIMIT_NLIMITS 105 #define RLIMIT_NLIMITS __RLIMIT_NLIMITS 106 #define RLIM_NLIMITS __RLIM_NLIMITS 107 }; 108 109 /* Value to indicate that there is no limit. */ 110 #if _MIPS_SIM == _ABI64 111 /* The N64 syscall uses this value. */ 112 # define RLIM_INFINITY 0xffffffffffffffffUL 113 # ifdef __USE_LARGEFILE64 114 # define RLIM64_INFINITY 0xffffffffffffffffUL 115 # endif 116 #else 117 /* The O32 and N32 syscalls use 0x7fffffff. */ 118 # ifndef __USE_FILE_OFFSET64 119 # define RLIM_INFINITY ((long int)(~0UL >> 1)) 120 # else 121 # define RLIM_INFINITY 0x7fffffffffffffffULL 122 # endif 123 # ifdef __USE_LARGEFILE64 124 # define RLIM64_INFINITY 0x7fffffffffffffffULL 125 # endif 126 #endif 127 128 /* We can represent all limits. */ 129 #define RLIM_SAVED_MAX RLIM_INFINITY 130 #define RLIM_SAVED_CUR RLIM_INFINITY 131 132 133 /* Type for resource quantity measurement. */ 134 #ifndef __USE_FILE_OFFSET64 135 typedef __rlim_t rlim_t; 136 #else 137 typedef __rlim64_t rlim_t; 138 #endif 139 #ifdef __USE_LARGEFILE64 140 typedef __rlim64_t rlim64_t; 141 #endif 142 143 struct rlimit 144 { 145 /* The current (soft) limit. */ 146 rlim_t rlim_cur; 147 /* The hard limit. */ 148 rlim_t rlim_max; 149 }; 150 151 #ifdef __USE_LARGEFILE64 152 struct rlimit64 153 { 154 /* The current (soft) limit. */ 155 rlim64_t rlim_cur; 156 /* The hard limit. */ 157 rlim64_t rlim_max; 158 }; 159 #endif 160 161 /* Whose usage statistics do you want? */ 162 enum __rusage_who 163 { 164 /* The calling process. */ 165 RUSAGE_SELF = 0, 166 #define RUSAGE_SELF RUSAGE_SELF 167 168 /* All of its terminated child processes. */ 169 RUSAGE_CHILDREN = -1 170 #define RUSAGE_CHILDREN RUSAGE_CHILDREN 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 }; 234