sysdeps/unix/sysv/aix/bits/resource.h

   1 /* Bit values & structures for resource limits.  AIX version.
   2    Copyright (C) 1994, 1996-1999, 2000 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   /* Address space limit (?) */
  62   RLIMIT_AS = 6,
  63 #define RLIMIT_AS RLIMIT_AS
  64
  65   /* Number of open files.  */
  66   RLIMIT_NOFILE = 7,
  67   RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same.  */
  68 #define RLIMIT_NOFILE RLIMIT_NOFILE
  69 #define RLIMIT_OFILE RLIMIT_OFILE
  70
  71   RLIM_NLIMITS = 10
  72 #define RLIMIT_NLIMITS RLIMIT_NLIMITS
  73 #define RLIM_NLIMITS RLIM_NLIMITS
  74 };
  75
  76 /* Value to indicate that there is no limit.  */
  77 #ifndef __USE_FILE_OFFSET64
  78 # define RLIM_INFINITY ((long int)(~0UL >> 1))
  79 #else
  80 # define RLIM_INFINITY 0x7fffffffffffffffLL
  81 #endif
  82
  83 #ifdef __USE_LARGEFILE64
  84 # define RLIM64_INFINITY 0x7fffffffffffffffLL
  85 #endif
  86
  87 #define RLIM_SAVED_MAX  (RLIM_INFINITY - 1)
  88 #define RLIM_SAVED_CUR  (RLIM_INFINITY - 2)
  89
  90
  91 /* Type for resource quantity measurement.  */
  92 #ifndef __USE_FILE_OFFSET64
  93 typedef __rlim_t rlim_t;
  94 #else
  95 typedef __rlim64_t rlim_t;
  96 #endif
  97 #ifdef __USE_LARGEFILE64
  98 typedef __rlim64_t rlim64_t;
  99 #endif
 100
 101 struct rlimit
 102   {
 103     /* The current (soft) limit.  */
 104     rlim_t rlim_cur;
 105     /* The hard limit.  */
 106     rlim_t rlim_max;
 107   };
 108
 109 #ifdef __USE_LARGEFILE64
 110 struct rlimit64
 111   {
 112     /* The current (soft) limit.  */
 113     rlim64_t rlim_cur;
 114     /* The hard limit.  */
 115     rlim64_t rlim_max;
 116  };
 117 #endif
 118
 119 /* Whose usage statistics do you want?  */
 120 enum __rusage_who
 121 {
 122   /* The calling process.  */
 123   RUSAGE_SELF = 0,
 124 #define RUSAGE_SELF RUSAGE_SELF
 125
 126   /* All of its terminated child processes.  */
 127   RUSAGE_CHILDREN = -1
 128 #define RUSAGE_CHILDREN RUSAGE_CHILDREN
 129 };
 130
 131 #define __need_timeval
 132 #include <bits/time.h>          /* For `struct timeval'.  */
 133
 134 /* Structure which says how much of each resource has been used.  */
 135 struct rusage
 136   {
 137     /* Total amount of user time used.  */
 138     struct timeval ru_utime;
 139     /* Total amount of system time used.  */
 140     struct timeval ru_stime;
 141     /* Maximum resident set size (in kilobytes).  */
 142     long int ru_maxrss;
 143     /* Amount of sharing of text segment memory
 144        with other processes (kilobyte-seconds).  */
 145     long int ru_ixrss;
 146     /* Amount of data segment memory used (kilobyte-seconds).  */
 147     long int ru_idrss;
 148     /* Amount of stack memory used (kilobyte-seconds).  */
 149     long int ru_isrss;
 150     /* Number of soft page faults (i.e. those serviced by reclaiming
 151        a page from the list of pages awaiting reallocation.  */
 152     long int ru_minflt;
 153     /* Number of hard page faults (i.e. those that required I/O).  */
 154     long int ru_majflt;
 155     /* Number of times a process was swapped out of physical memory.  */
 156     long int ru_nswap;
 157     /* Number of input operations via the file system.  Note: This
 158        and `ru_oublock' do not include operations with the cache.  */
 159     long int ru_inblock;
 160     /* Number of output operations via the file system.  */
 161     long int ru_oublock;
 162     /* Number of IPC messages sent.  */
 163     long int ru_msgsnd;
 164     /* Number of IPC messages received.  */
 165     long int ru_msgrcv;
 166     /* Number of signals delivered.  */
 167     long int ru_nsignals;
 168     /* Number of voluntary context switches, i.e. because the process
 169        gave up the process before it had to (usually to wait for some
 170        resource to be available).  */
 171     long int ru_nvcsw;
 172     /* Number of involuntary context switches, i.e. a higher priority process
 173        became runnable or the current process used up its time slice.  */
 174     long int ru_nivcsw;
 175   };
 176
 177 /* Priority limits.  */
 178 #define PRIO_MIN        -20     /* Minimum priority a process can have.  */
 179 #define PRIO_MAX        20      /* Maximum priority a process can have.  */
 180
 181 /* The type of the WHICH argument to `getpriority' and `setpriority',
 182    indicating what flavor of entity the WHO argument specifies.  */
 183 enum __priority_which
 184 {
 185   PRIO_PROCESS = 0,             /* WHO is a process ID.  */
 186 #define PRIO_PROCESS PRIO_PROCESS
 187   PRIO_PGRP = 1,                /* WHO is a process group ID.  */
 188 #define PRIO_PGRP PRIO_PGRP
 189   PRIO_USER = 2                 /* WHO is a user ID.  */
 190 #define PRIO_USER PRIO_USER
 191 };