sysdeps/unix/sysv/linux/s390/s390-32/bits/resource.h

   1 /* Bit values & structures for resource limits.  Linux version.
   2    Copyright (C) 2000, 2001, 2002 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 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    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 = 7,
  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 = 9,
  69 #define RLIMIT_AS RLIMIT_AS
  70
  71   /* Number of processes.  */
  72   RLIMIT_NPROC = 6,
  73 #define RLIMIT_NPROC RLIMIT_NPROC
  74
  75   /* Locked-in-memory address space.  */
  76   RLIMIT_MEMLOCK = 8,
  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   RLIMIT_NLIMITS = 11,
  84   RLIM_NLIMITS = RLIMIT_NLIMITS
  85 #define RLIMIT_NLIMITS RLIMIT_NLIMITS
  86 #define RLIM_NLIMITS RLIM_NLIMITS
  87 };
  88
  89 /* Value to indicate that there is no limit.  */
  90 #ifndef __USE_FILE_OFFSET64
  91 # define RLIM_INFINITY ((unsigned long int) (~0UL))
  92 #else
  93 # define RLIM_INFINITY 0xffffffffffffffffuLL
  94 #endif
  95
  96 #ifdef __USE_LARGEFILE64
  97 # define RLIM64_INFINITY 0xffffffffffffffffuLL
  98 #endif
  99
 100 /* We can represent all limits.  */
 101 #define RLIM_SAVED_MAX  RLIM_INFINITY
 102 #define RLIM_SAVED_CUR  RLIM_INFINITY
 103
 104
 105 /* Type for resource quantity measurement.  */
 106 #ifndef __USE_FILE_OFFSET64
 107 typedef __rlim_t rlim_t;
 108 #else
 109 typedef __rlim64_t rlim_t;
 110 #endif
 111 #ifdef __USE_LARGEFILE64
 112 typedef __rlim64_t rlim64_t;
 113 #endif
 114
 115 struct rlimit
 116   {
 117     /* The current (soft) limit.  */
 118     rlim_t rlim_cur;
 119     /* The hard limit.  */
 120     rlim_t rlim_max;
 121   };
 122
 123 #ifdef __USE_LARGEFILE64
 124 struct rlimit64
 125   {
 126     /* The current (soft) limit.  */
 127     rlim64_t rlim_cur;
 128     /* The hard limit.  */
 129     rlim64_t rlim_max;
 130  };
 131 #endif
 132
 133 /* Whose usage statistics do you want?  */
 134 enum __rusage_who
 135 {
 136   /* The calling process.  */
 137   RUSAGE_SELF = 0,
 138 #define RUSAGE_SELF RUSAGE_SELF
 139
 140   /* All of its terminated child processes.  */
 141   RUSAGE_CHILDREN = -1,
 142 #define RUSAGE_CHILDREN RUSAGE_CHILDREN
 143
 144   /* Both.  */
 145   RUSAGE_BOTH = -2
 146 #define RUSAGE_BOTH RUSAGE_BOTH
 147 };
 148
 149 #define __need_timeval
 150 #include <bits/time.h>          /* For `struct timeval'.  */
 151
 152 /* Structure which says how much of each resource has been used.  */
 153 struct rusage
 154   {
 155     /* Total amount of user time used.  */
 156     struct timeval ru_utime;
 157     /* Total amount of system time used.  */
 158     struct timeval ru_stime;
 159     /* Maximum resident set size (in kilobytes).  */
 160     long int ru_maxrss;
 161     /* Amount of sharing of text segment memory
 162        with other processes (kilobyte-seconds).  */
 163     long int ru_ixrss;
 164     /* Amount of data segment memory used (kilobyte-seconds).  */
 165     long int ru_idrss;
 166     /* Amount of stack memory used (kilobyte-seconds).  */
 167     long int ru_isrss;
 168     /* Number of soft page faults (i.e. those serviced by reclaiming
 169        a page from the list of pages awaiting reallocation.  */
 170     long int ru_minflt;
 171     /* Number of hard page faults (i.e. those that required I/O).  */
 172     long int ru_majflt;
 173     /* Number of times a process was swapped out of physical memory.  */
 174     long int ru_nswap;
 175     /* Number of input operations via the file system.  Note: This
 176        and `ru_oublock' do not include operations with the cache.  */
 177     long int ru_inblock;
 178     /* Number of output operations via the file system.  */
 179     long int ru_oublock;
 180     /* Number of IPC messages sent.  */
 181     long int ru_msgsnd;
 182     /* Number of IPC messages received.  */
 183     long int ru_msgrcv;
 184     /* Number of signals delivered.  */
 185     long int ru_nsignals;
 186     /* Number of voluntary context switches, i.e. because the process
 187        gave up the process before it had to (usually to wait for some
 188        resource to be available).  */
 189     long int ru_nvcsw;
 190     /* Number of involuntary context switches, i.e. a higher priority process
 191        became runnable or the current process used up its time slice.  */
 192     long int ru_nivcsw;
 193   };
 194
 195 /* Priority limits.  */
 196 #define PRIO_MIN        -20     /* Minimum priority a process can have.  */
 197 #define PRIO_MAX        20      /* Maximum priority a process can have.  */
 198
 199 /* The type of the WHICH argument to `getpriority' and `setpriority',
 200    indicating what flavor of entity the WHO argument specifies.  */
 201 enum __priority_which
 202 {
 203   PRIO_PROCESS = 0,             /* WHO is a process ID.  */
 204 #define PRIO_PROCESS PRIO_PROCESS
 205   PRIO_PGRP = 1,                /* WHO is a process group ID.  */
 206 #define PRIO_PGRP PRIO_PGRP
 207   PRIO_USER = 2                 /* WHO is a user ID.  */
 208 #define PRIO_USER PRIO_USER
 209 };