sysdeps/unix/bsd/sun/sunos4/bits/resource.h

   1 /* Bit values for resource limits.  SunOS 4 version.
   2    Copyright (C) 1994, 1996, 1997 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 Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 /* These are the values for 4.4 BSD and GNU.  Earlier BSD systems have a
  21    subset of these kinds of resource limit.  In systems where `getrlimit'
  22    and `setrlimit' are not system calls, these are the values used by the C
  23    library to emulate them.  */
  24
  25 #include <bits/types.h>
  26
  27 /* Kinds of resource limit.  */
  28 enum __rlimit_resource
  29   {
  30     /* Per-process CPU limit, in seconds.  */
  31     RLIMIT_CPU,
  32 #define RLIMIT_CPU      RLIMIT_CPU
  33     /* Largest file that can be created, in bytes.  */
  34     RLIMIT_FSIZE,
  35 #define RLIMIT_FSIZE    RLIMIT_FSIZE
  36     /* Maximum size of data segment, in bytes.  */
  37     RLIMIT_DATA,
  38 #define RLIMIT_DATA     RLIMIT_DATA
  39     /* Maximum size of stack segment, in bytes.  */
  40     RLIMIT_STACK,
  41 #define RLIMIT_STACK    RLIMIT_STACK
  42     /* Largest core file that can be created, in bytes.  */
  43     RLIMIT_CORE,
  44 #define RLIMIT_CORE     RLIMIT_CORE
  45     /* Largest resident set size, in bytes.
  46        This affects swapping; processes that are exceeding their
  47        resident set size will be more likely to have physical memory
  48        taken from them.  */
  49     RLIMIT_RSS,
  50 #define RLIMIT_RSS      RLIMIT_RSS
  51     /* Number of open files.  */
  52     RLIMIT_NOFILE,
  53     RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same.  */
  54 #define RLIMIT_NOFILE   RLIMIT_NOFILE
  55 #define RLIMIT_OFILE    RLIMIT_OFILE
  56
  57     RLIM_NLIMITS
  58   };
  59
  60 /* Value to indicate that there is no limit.  */
  61 #ifndef __USE_FILE_OFFSET64
  62 # define RLIM_INFINITY 0x7fffffff
  63 #else
  64 # define RLIM_INFINITY 0x7fffffffffffffffL
  65 #endif
  66
  67 #ifdef __USE_LARGEFILE64
  68 # define RLIM64_INFINITY 0x7fffffffffffffffL
  69 #endif
  70
  71
  72 /* Type to represent quantities in resource limits.  */
  73 #ifndef __USE_FILE_OFFSET64
  74 typedef __rlim_t rlim_t;
  75 #else
  76 typedef __rlim64_t rlim_t;
  77 #endif
  78
  79 struct rlimit
  80   {
  81     /* The current (soft) limit.  */
  82     rlim_t rlim_cur;
  83     /* The hard limit.  */
  84     rlim_t rlim_max;
  85   };
  86
  87 #ifdef __USE_LARGEFILE64
  88 typedef __rlim64_t rlim64_t;
  89
  90 struct rlimit64
  91   {
  92     /* The current (soft) limit.  */
  93     rlim64_t rlim_cur;
  94     /* The hard limit.  */
  95     rlim64_t rlim_max;
  96   };
  97 #endif
  98
  99 /* Whose usage statistics do you want?  */
 100 enum __rusage_who
 101 /* The macro definitions are necessary because some programs want
 102    to test for operating system features with #ifdef RUSAGE_SELF.
 103    In ISO C the reflexive definition is a no-op.  */
 104   {
 105     /* The calling process.  */
 106     RUSAGE_SELF = 0,
 107 #define RUSAGE_SELF     RUSAGE_SELF
 108     /* All of its terminated child processes.  */
 109     RUSAGE_CHILDREN = -1
 110 #define RUSAGE_CHILDREN RUSAGE_CHILDREN
 111   };
 112
 113 #include <sys/time.h>           /* For `struct timeval'.  */
 114
 115 /* Structure which says how much of each resource has been used.  */
 116 struct rusage
 117   {
 118     /* Total amount of user time used.  */
 119     struct timeval ru_utime;
 120     /* Total amount of system time used.  */
 121     struct timeval ru_stime;
 122     /* Maximum resident set size (in kilobytes).  */
 123     long int ru_maxrss;
 124     /* Amount of sharing of text segment memory
 125        with other processes (kilobyte-seconds).  */
 126     long int ru_ixrss;
 127     /* Amount of data segment memory used (kilobyte-seconds).  */
 128     long int ru_idrss;
 129     /* Amount of stack memory used (kilobyte-seconds).  */
 130     long int ru_isrss;
 131     /* Number of soft page faults (i.e. those serviced by reclaiming
 132        a page from the list of pages awaiting reallocation.  */
 133     long int ru_minflt;
 134     /* Number of hard page faults (i.e. those that required I/O).  */
 135     long int ru_majflt;
 136     /* Number of times a process was swapped out of physical memory.  */
 137     long int ru_nswap;
 138     /* Number of input operations via the file system.  Note: This
 139        and `ru_oublock' do not include operations with the cache.  */
 140     long int ru_inblock;
 141     /* Number of output operations via the file system.  */
 142     long int ru_oublock;
 143     /* Number of IPC messages sent.  */
 144     long int ru_msgsnd;
 145     /* Number of IPC messages received.  */
 146     long int ru_msgrcv;
 147     /* Number of signals delivered.  */
 148     long int ru_nsignals;
 149     /* Number of voluntary context switches, i.e. because the process
 150        gave up the process before it had to (usually to wait for some
 151        resource to be available).  */
 152     long int ru_nvcsw;
 153     /* Number of involuntary context switches, i.e. a higher priority process
 154        became runnable or the current process used up its time slice.  */
 155     long int ru_nivcsw;
 156   };
 157
 158 /* Priority limits.  */
 159 #define PRIO_MIN        -20     /* Minimum priority a process can have.  */
 160 #define PRIO_MAX        20      /* Maximum priority a process can have.  */
 161
 162 /* The type of the WHICH argument to `getpriority' and `setpriority',
 163    indicating what flavor of entity the WHO argument specifies.  */
 164 enum __priority_which
 165   {
 166     PRIO_PROCESS = 0,           /* WHO is a process ID.  */
 167     PRIO_PGRP = 1,              /* WHO is a process group ID.  */
 168     PRIO_USER = 2               /* WHO is a user ID.  */
 169   };