libc/sysdeps/linux/mips/bits/resource.h

   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, see
  18    <http://www.gnu.org/licenses/>.  */
  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 = 7,
  59 #define RLIMIT_RSS __RLIMIT_RSS
  60
  61   /* Number of open files.  */
  62   RLIMIT_NOFILE = 5,
  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 = 6,
  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   /* Maximum number of file locks.  */
  80   __RLIMIT_LOCKS = 10,
  81 #define RLIMIT_LOCKS __RLIMIT_LOCKS
  82
  83   /* Maximum number of pending signals.  */
  84   __RLIMIT_SIGPENDING = 11,
  85 #define RLIMIT_SIGPENDING __RLIMIT_SIGPENDING
  86
  87   /* Maximum bytes in POSIX message queues.  */
  88   __RLIMIT_MSGQUEUE = 12,
  89 #define RLIMIT_MSGQUEUE __RLIMIT_MSGQUEUE
  90
  91   /* Maximum nice priority allowed to raise to.
  92      Nice levels 19 .. -20 correspond to 0 .. 39
  93      values of this resource limit.  */
  94   __RLIMIT_NICE = 13,
  95 #define RLIMIT_NICE __RLIMIT_NICE
  96
  97   /* Maximum realtime priority allowed for non-priviledged
  98      processes.  */
  99   __RLIMIT_RTPRIO = 14,
 100 #define RLIMIT_RTPRIO __RLIMIT_RTPRIO
 101
 102   __RLIMIT_NLIMITS = 15,
 103   __RLIM_NLIMITS = __RLIMIT_NLIMITS
 104 #define RLIMIT_NLIMITS __RLIMIT_NLIMITS
 105 #define RLIM_NLIMITS __RLIM_NLIMITS
 106 };
 107
 108 /* Value to indicate that there is no limit.  */
 109 #if _MIPS_SIM == _ABI64
 110 /* The N64 syscall uses this value.  */
 111 # define RLIM_INFINITY 0xffffffffffffffffUL
 112 # ifdef __USE_LARGEFILE64
 113 #  define RLIM64_INFINITY 0xffffffffffffffffUL
 114 # endif
 115 #else
 116 /* The O32 and N32 syscalls use 0x7fffffff.  */
 117 # ifndef __USE_FILE_OFFSET64
 118 #  define RLIM_INFINITY ((long int)(~0UL >> 1))
 119 # else
 120 #  define RLIM_INFINITY 0x7fffffffffffffffULL
 121 # endif
 122 # ifdef __USE_LARGEFILE64
 123 #  define RLIM64_INFINITY 0x7fffffffffffffffULL
 124 # endif
 125 #endif
 126
 127 /* We can represent all limits.  */
 128 #define RLIM_SAVED_MAX  RLIM_INFINITY
 129 #define RLIM_SAVED_CUR  RLIM_INFINITY
 130
 131
 132 /* Type for resource quantity measurement.  */
 133 #ifndef __USE_FILE_OFFSET64
 134 typedef __rlim_t rlim_t;
 135 #else
 136 typedef __rlim64_t rlim_t;
 137 #endif
 138 #ifdef __USE_LARGEFILE64
 139 typedef __rlim64_t rlim64_t;
 140 #endif
 141
 142 struct rlimit
 143   {
 144     /* The current (soft) limit.  */
 145     rlim_t rlim_cur;
 146     /* The hard limit.  */
 147     rlim_t rlim_max;
 148   };
 149
 150 #ifdef __USE_LARGEFILE64
 151 struct rlimit64
 152   {
 153     /* The current (soft) limit.  */
 154     rlim64_t rlim_cur;
 155     /* The hard limit.  */
 156     rlim64_t rlim_max;
 157  };
 158 #endif
 159
 160 /* Whose usage statistics do you want?  */
 161 enum __rusage_who
 162 {
 163   /* The calling process.  */
 164   RUSAGE_SELF = 0,
 165 #define RUSAGE_SELF RUSAGE_SELF
 166
 167   /* All of its terminated child processes.  */
 168   RUSAGE_CHILDREN = -1
 169 #define RUSAGE_CHILDREN RUSAGE_CHILDREN
 170 };
 171
 172 #define __need_timeval
 173 #include <bits/time.h>          /* For `struct timeval'.  */
 174
 175 /* Structure which says how much of each resource has been used.  */
 176 struct rusage
 177   {
 178     /* Total amount of user time used.  */
 179     struct timeval ru_utime;
 180     /* Total amount of system time used.  */
 181     struct timeval ru_stime;
 182     /* Maximum resident set size (in kilobytes).  */
 183     long int ru_maxrss;
 184     /* Amount of sharing of text segment memory
 185        with other processes (kilobyte-seconds).  */
 186     long int ru_ixrss;
 187     /* Amount of data segment memory used (kilobyte-seconds).  */
 188     long int ru_idrss;
 189     /* Amount of stack memory used (kilobyte-seconds).  */
 190     long int ru_isrss;
 191     /* Number of soft page faults (i.e. those serviced by reclaiming
 192        a page from the list of pages awaiting reallocation.  */
 193     long int ru_minflt;
 194     /* Number of hard page faults (i.e. those that required I/O).  */
 195     long int ru_majflt;
 196     /* Number of times a process was swapped out of physical memory.  */
 197     long int ru_nswap;
 198     /* Number of input operations via the file system.  Note: This
 199        and `ru_oublock' do not include operations with the cache.  */
 200     long int ru_inblock;
 201     /* Number of output operations via the file system.  */
 202     long int ru_oublock;
 203     /* Number of IPC messages sent.  */
 204     long int ru_msgsnd;
 205     /* Number of IPC messages received.  */
 206     long int ru_msgrcv;
 207     /* Number of signals delivered.  */
 208     long int ru_nsignals;
 209     /* Number of voluntary context switches, i.e. because the process
 210        gave up the process before it had to (usually to wait for some
 211        resource to be available).  */
 212     long int ru_nvcsw;
 213     /* Number of involuntary context switches, i.e. a higher priority process
 214        became runnable or the current process used up its time slice.  */
 215     long int ru_nivcsw;
 216   };
 217
 218 /* Priority limits.  */
 219 #define PRIO_MIN        -20     /* Minimum priority a process can have.  */
 220 #define PRIO_MAX        20      /* Maximum priority a process can have.  */
 221
 222 /* The type of the WHICH argument to `getpriority' and `setpriority',
 223    indicating what flavor of entity the WHO argument specifies.  */
 224 enum __priority_which
 225 {
 226   PRIO_PROCESS = 0,             /* WHO is a process ID.  */
 227 #define PRIO_PROCESS PRIO_PROCESS
 228   PRIO_PGRP = 1,                /* WHO is a process group ID.  */
 229 #define PRIO_PGRP PRIO_PGRP
 230   PRIO_USER = 2                 /* WHO is a user ID.  */
 231 #define PRIO_USER PRIO_USER
 232 };