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 #ifndef _SYS_RESOURCE_H
  21 # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead."
  22 #endif
  23
  24 /* These are the values for 4.4 BSD and GNU.  Earlier BSD systems have a
  25    subset of these kinds of resource limit.  In systems where `getrlimit'
  26    and `setrlimit' are not system calls, these are the values used by the C
  27    library to emulate them.  */
  28
  29 #include <bits/types.h>
  30
  31 /* Kinds of resource limit.  */
  32 enum __rlimit_resource
  33   {
  34     /* Per-process CPU limit, in seconds.  */
  35     RLIMIT_CPU,
  36 #define RLIMIT_CPU      RLIMIT_CPU
  37     /* Largest file that can be created, in bytes.  */
  38     RLIMIT_FSIZE,
  39 #define RLIMIT_FSIZE    RLIMIT_FSIZE
  40     /* Maximum size of data segment, in bytes.  */
  41     RLIMIT_DATA,
  42 #define RLIMIT_DATA     RLIMIT_DATA
  43     /* Maximum size of stack segment, in bytes.  */
  44     RLIMIT_STACK,
  45 #define RLIMIT_STACK    RLIMIT_STACK
  46     /* Largest core file that can be created, in bytes.  */
  47     RLIMIT_CORE,
  48 #define RLIMIT_CORE     RLIMIT_CORE
  49     /* Largest resident set size, in bytes.
  50        This affects swapping; processes that are exceeding their
  51        resident set size will be more likely to have physical memory
  52        taken from them.  */
  53     RLIMIT_RSS,
  54 #define RLIMIT_RSS      RLIMIT_RSS
  55     /* Number of open files.  */
  56     RLIMIT_NOFILE,
  57     RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same.  */
  58 #define RLIMIT_NOFILE   RLIMIT_NOFILE
  59 #define RLIMIT_OFILE    RLIMIT_OFILE
  60
  61     RLIM_NLIMITS
  62   };
  63
  64 /* Value to indicate that there is no limit.  */
  65 #ifndef __USE_FILE_OFFSET64
  66 # define RLIM_INFINITY 0x7fffffff
  67 #else
  68 # define RLIM_INFINITY 0x7fffffffffffffffLL
  69 #endif
  70
  71 #ifdef __USE_LARGEFILE64
  72 # define RLIM64_INFINITY 0x7fffffffffffffffLL
  73 #endif
  74
  75
  76 /* Type to represent quantities in resource limits.  */
  77 #ifndef __USE_FILE_OFFSET64
  78 typedef __rlim_t rlim_t;
  79 #else
  80 typedef __rlim64_t rlim_t;
  81 #endif
  82
  83 struct rlimit
  84   {
  85     /* The current (soft) limit.  */
  86     rlim_t rlim_cur;
  87     /* The hard limit.  */
  88     rlim_t rlim_max;
  89   };
  90
  91 #ifdef __USE_LARGEFILE64
  92 typedef __rlim64_t rlim64_t;
  93
  94 struct rlimit64
  95   {
  96     /* The current (soft) limit.  */
  97     rlim64_t rlim_cur;
  98     /* The hard limit.  */
  99     rlim64_t rlim_max;
 100   };
 101 #endif
 102
 103 /* Whose usage statistics do you want?  */
 104 enum __rusage_who
 105 /* The macro definitions are necessary because some programs want
 106    to test for operating system features with #ifdef RUSAGE_SELF.
 107    In ISO C the reflexive definition is a no-op.  */
 108   {
 109     /* The calling process.  */
 110     RUSAGE_SELF = 0,
 111 #define RUSAGE_SELF     RUSAGE_SELF
 112     /* All of its terminated child processes.  */
 113     RUSAGE_CHILDREN = -1
 114 #define RUSAGE_CHILDREN RUSAGE_CHILDREN
 115   };
 116
 117 #define __need_timeval
 118 #include <bits/time.h>           /* For `struct timeval'.  */
 119
 120 /* Structure which says how much of each resource has been used.  */
 121 struct rusage
 122   {
 123     /* Total amount of user time used.  */
 124     struct timeval ru_utime;
 125     /* Total amount of system time used.  */
 126     struct timeval ru_stime;
 127     /* Maximum resident set size (in kilobytes).  */
 128     long int ru_maxrss;
 129     /* Amount of sharing of text segment memory
 130        with other processes (kilobyte-seconds).  */
 131     long int ru_ixrss;
 132     /* Amount of data segment memory used (kilobyte-seconds).  */
 133     long int ru_idrss;
 134     /* Amount of stack memory used (kilobyte-seconds).  */
 135     long int ru_isrss;
 136     /* Number of soft page faults (i.e. those serviced by reclaiming
 137        a page from the list of pages awaiting reallocation.  */
 138     long int ru_minflt;
 139     /* Number of hard page faults (i.e. those that required I/O).  */
 140     long int ru_majflt;
 141     /* Number of times a process was swapped out of physical memory.  */
 142     long int ru_nswap;
 143     /* Number of input operations via the file system.  Note: This
 144        and `ru_oublock' do not include operations with the cache.  */
 145     long int ru_inblock;
 146     /* Number of output operations via the file system.  */
 147     long int ru_oublock;
 148     /* Number of IPC messages sent.  */
 149     long int ru_msgsnd;
 150     /* Number of IPC messages received.  */
 151     long int ru_msgrcv;
 152     /* Number of signals delivered.  */
 153     long int ru_nsignals;
 154     /* Number of voluntary context switches, i.e. because the process
 155        gave up the process before it had to (usually to wait for some
 156        resource to be available).  */
 157     long int ru_nvcsw;
 158     /* Number of involuntary context switches, i.e. a higher priority process
 159        became runnable or the current process used up its time slice.  */
 160     long int ru_nivcsw;
 161   };
 162
 163 /* Priority limits.  */
 164 #define PRIO_MIN        -20     /* Minimum priority a process can have.  */
 165 #define PRIO_MAX        20      /* Maximum priority a process can have.  */
 166
 167 /* The type of the WHICH argument to `getpriority' and `setpriority',
 168    indicating what flavor of entity the WHO argument specifies.  */
 169 enum __priority_which
 170   {
 171     PRIO_PROCESS = 0,           /* WHO is a process ID.  */
 172     PRIO_PGRP = 1,              /* WHO is a process group ID.  */
 173     PRIO_USER = 2               /* WHO is a user ID.  */
 174   };