libc/sysdeps/linux/c6x/bits/resource.h

   1 /* Bit values & structures for resource limits.  Linux/m68k version.
   2    Copyright (C) 1994,1996,1997,1998,1999,2000,2001 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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _SYS_RESOURCE_H
  20 # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead."
  21 #endif
  22
  23 #include <bits/types.h>
  24
  25 /* Transmute defines to enumerations.  The macro re-definitions are
  26    necessary because some programs want to test for operating system
  27    features with #ifdef RUSAGE_SELF.  In ISO C the reflexive
  28    definition is a no-op.  */
  29
  30 /* Kinds of resource limit.  */
  31 enum __rlimit_resource
  32 {
  33   /* Per-process CPU limit, in seconds.  */
  34   RLIMIT_CPU = 0,
  35 #define RLIMIT_CPU RLIMIT_CPU
  36
  37   /* Largest file that can be created, in bytes.  */
  38   RLIMIT_FSIZE = 1,
  39 #define RLIMIT_FSIZE RLIMIT_FSIZE
  40
  41   /* Maximum size of data segment, in bytes.  */
  42   RLIMIT_DATA = 2,
  43 #define RLIMIT_DATA RLIMIT_DATA
  44
  45   /* Maximum size of stack segment, in bytes.  */
  46   RLIMIT_STACK = 3,
  47 #define RLIMIT_STACK RLIMIT_STACK
  48
  49   /* Largest core file that can be created, in bytes.  */
  50   RLIMIT_CORE = 4,
  51 #define RLIMIT_CORE RLIMIT_CORE
  52
  53   /* Largest resident set size, in bytes.
  54      This affects swapping; processes that are exceeding their
  55      resident set size will be more likely to have physical memory
  56      taken from them.  */
  57   RLIMIT_RSS = 5,
  58 #define RLIMIT_RSS RLIMIT_RSS
  59
  60   /* Number of open files.  */
  61   RLIMIT_NOFILE = 7,
  62   RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same.  */
  63 #define RLIMIT_NOFILE RLIMIT_NOFILE
  64 #define RLIMIT_OFILE RLIMIT_OFILE
  65
  66   /* Address space limit.  */
  67   RLIMIT_AS = 9,
  68 #define RLIMIT_AS RLIMIT_AS
  69
  70   /* Number of processes.  */
  71   RLIMIT_NPROC = 6,
  72 #define RLIMIT_NPROC RLIMIT_NPROC
  73
  74   /* Locked-in-memory address space.  */
  75   RLIMIT_MEMLOCK = 8,
  76 #define RLIMIT_MEMLOCK RLIMIT_MEMLOCK
  77
  78   /* Maximum number of file locks.  */
  79   RLIMIT_LOCKS = 10,
  80 #define RLIMIT_LOCKS RLIMIT_LOCKS
  81
  82   RLIMIT_NLIMITS = 11,
  83   RLIM_NLIMITS = RLIMIT_NLIMITS
  84 #define RLIMIT_NLIMITS RLIMIT_NLIMITS
  85 #define RLIM_NLIMITS RLIM_NLIMITS
  86 };
  87
  88 /* Value to indicate that there is no limit.  */
  89 #ifndef __USE_FILE_OFFSET64
  90 # define RLIM_INFINITY ((unsigned long)(~0UL))
  91 #else
  92 # define RLIM_INFINITY 0xffffffffffffffffuLL
  93 #endif
  94
  95 #ifdef __USE_LARGEFILE64
  96 # define RLIM64_INFINITY 0xffffffffffffffffuLL
  97 #endif
  98
  99 /* We can represent all limits.  */
 100 #define RLIM_SAVED_MAX  RLIM_INFINITY
 101 #define RLIM_SAVED_CUR  RLIM_INFINITY
 102
 103
 104 /* Type for resource quantity measurement.  */
 105 #ifndef __USE_FILE_OFFSET64
 106 typedef __rlim_t rlim_t;
 107 #else
 108 typedef __rlim64_t rlim_t;
 109 #endif
 110 #ifdef __USE_LARGEFILE64
 111 typedef __rlim64_t rlim64_t;
 112 #endif
 113
 114 struct rlimit
 115   {
 116     /* The current (soft) limit.  */
 117     rlim_t rlim_cur;
 118     /* The hard limit.  */
 119     rlim_t rlim_max;
 120   };
 121
 122 #ifdef __USE_LARGEFILE64
 123 struct rlimit64
 124   {
 125     /* The current (soft) limit.  */
 126     rlim64_t rlim_cur;
 127     /* The hard limit.  */
 128     rlim64_t rlim_max;
 129  };
 130 #endif
 131
 132 /* Whose usage statistics do you want?  */
 133 enum __rusage_who
 134 {
 135   /* The calling process.  */
 136   RUSAGE_SELF = 0,
 137 #define RUSAGE_SELF RUSAGE_SELF
 138
 139   /* All of its terminated child processes.  */
 140   RUSAGE_CHILDREN = -1,
 141 #define RUSAGE_CHILDREN RUSAGE_CHILDREN
 142
 143   /* Both.  */
 144   RUSAGE_BOTH = -2
 145 #define RUSAGE_BOTH RUSAGE_BOTH
 146
 147 #ifdef __USE_GNU
 148   ,
 149   /* The calling thread.  */
 150   RUSAGE_THREAD = 1
 151 # define RUSAGE_THREAD RUSAGE_THREAD
 152   /* Name for the same functionality on Solaris.  */
 153 # define RUSAGE_LWP RUSAGE_THREAD
 154 #endif
 155 };
 156
 157 #define __need_timeval
 158 #include <bits/time.h>          /* For `struct timeval'.  */
 159
 160 /* Structure which says how much of each resource has been used.  */
 161 struct rusage
 162   {
 163     /* Total amount of user time used.  */
 164     struct timeval ru_utime;
 165     /* Total amount of system time used.  */
 166     struct timeval ru_stime;
 167     /* Maximum resident set size (in kilobytes).  */
 168     long ru_maxrss;
 169     /* Amount of sharing of text segment memory
 170        with other processes (kilobyte-seconds).  */
 171     long ru_ixrss;
 172     /* Amount of data segment memory used (kilobyte-seconds).  */
 173     long ru_idrss;
 174     /* Amount of stack memory used (kilobyte-seconds).  */
 175     long ru_isrss;
 176     /* Number of soft page faults (i.e. those serviced by reclaiming
 177        a page from the list of pages awaiting reallocation.  */
 178     long ru_minflt;
 179     /* Number of hard page faults (i.e. those that required I/O).  */
 180     long ru_majflt;
 181     /* Number of times a process was swapped out of physical memory.  */
 182     long ru_nswap;
 183     /* Number of input operations via the file system.  Note: This
 184        and `ru_oublock' do not include operations with the cache.  */
 185     long ru_inblock;
 186     /* Number of output operations via the file system.  */
 187     long ru_oublock;
 188     /* Number of IPC messages sent.  */
 189     long ru_msgsnd;
 190     /* Number of IPC messages received.  */
 191     long ru_msgrcv;
 192     /* Number of signals delivered.  */
 193     long ru_nsignals;
 194     /* Number of voluntary context switches, i.e. because the process
 195        gave up the process before it had to (usually to wait for some
 196        resource to be available).  */
 197     long ru_nvcsw;
 198     /* Number of involuntary context switches, i.e. a higher priority process
 199        became runnable or the current process used up its time slice.  */
 200     long ru_nivcsw;
 201   };
 202
 203 /* Priority limits.  */
 204 #define PRIO_MIN        -20     /* Minimum priority a process can have.  */
 205 #define PRIO_MAX        20      /* Maximum priority a process can have.  */
 206
 207 /* The type of the WHICH argument to `getpriority' and `setpriority',
 208    indicating what flavor of entity the WHO argument specifies.  */
 209 enum __priority_which
 210 {
 211   PRIO_PROCESS = 0,             /* WHO is a process ID.  */
 212 #define PRIO_PROCESS PRIO_PROCESS
 213   PRIO_PGRP = 1,                /* WHO is a process group ID.  */
 214 #define PRIO_PGRP PRIO_PGRP
 215   PRIO_USER = 2                 /* WHO is a user ID.  */
 216 #define PRIO_USER PRIO_USER
 217 };