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

   1 /* Bit values & structures for resource limits.  Linux/MIPS version.
   2    Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2004, 2005, 2006
   3    Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  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 = 7,
  59 #define RLIMIT_RSS __RLIMIT_RSS
  60
  61   /* Number of open files.  */
  62   RLIMIT_NOFILE = 5,
  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 = 6,
  69 #define RLIMIT_AS RLIMIT_AS
  70
  71   /* Number of processes.  */
  72   __RLIMIT_NPROC = 8,
  73 #define RLIMIT_NPROC __RLIMIT_NPROC
  74
  75   /* Locked-in-memory address space.  */
  76   __RLIMIT_MEMLOCK = 9,
  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   /* Maximum number of pending signals.  */
  84   __RLIMIT_SIGPENDING = 11,
  85 #define RLIMIT_SIGPENDING __RLIMIT_SIGPENDING
  86
  87   /* Maximum bytes in POSIX message queues.  */
  88   __RLIMIT_MSGQUEUE = 12,
  89 #define RLIMIT_MSGQUEUE __RLIMIT_MSGQUEUE
  90
  91   /* Maximum nice priority allowed to raise to.
  92      Nice levels 19 .. -20 correspond to 0 .. 39
  93      values of this resource limit.  */
  94   __RLIMIT_NICE = 13,
  95 #define RLIMIT_NICE __RLIMIT_NICE
  96
  97   /* Maximum realtime priority allowed for non-priviledged
  98      processes.  */
  99   __RLIMIT_RTPRIO = 14,
 100 #define RLIMIT_RTPRIO __RLIMIT_RTPRIO
 101
 102   /* Maximum CPU time in µs that a process scheduled under a real-time
 103      scheduling policy may consume without making a blocking system
 104      call before being forcibly descheduled.  */
 105   __RLIMIT_RTTIME = 15,
 106 #define RLIMIT_RTTIME __RLIMIT_RTTIME
 107
 108   __RLIMIT_NLIMITS = 16,
 109   __RLIM_NLIMITS = __RLIMIT_NLIMITS
 110 #define RLIMIT_NLIMITS __RLIMIT_NLIMITS
 111 #define RLIM_NLIMITS __RLIM_NLIMITS
 112 };
 113
 114 /* Value to indicate that there is no limit.  */
 115 #if _MIPS_SIM == _ABI64
 116 /* The N64 syscall uses this value.  */
 117 # define RLIM_INFINITY 0xffffffffffffffffUL
 118 # ifdef __USE_LARGEFILE64
 119 #  define RLIM64_INFINITY 0xffffffffffffffffUL
 120 # endif
 121 #else
 122 /* The O32 and N32 syscalls use 0x7fffffff.  */
 123 # ifndef __USE_FILE_OFFSET64
 124 #  define RLIM_INFINITY ((long int)(~0UL >> 1))
 125 # else
 126 #  define RLIM_INFINITY 0x7fffffffffffffffULL
 127 # endif
 128 # ifdef __USE_LARGEFILE64
 129 #  define RLIM64_INFINITY 0x7fffffffffffffffULL
 130 # endif
 131 #endif
 132
 133 /* We can represent all limits.  */
 134 #define RLIM_SAVED_MAX  RLIM_INFINITY
 135 #define RLIM_SAVED_CUR  RLIM_INFINITY
 136
 137
 138 /* Type for resource quantity measurement.  */
 139 #ifndef __USE_FILE_OFFSET64
 140 typedef __rlim_t rlim_t;
 141 #else
 142 typedef __rlim64_t rlim_t;
 143 #endif
 144 #ifdef __USE_LARGEFILE64
 145 typedef __rlim64_t rlim64_t;
 146 #endif
 147
 148 struct rlimit
 149   {
 150     /* The current (soft) limit.  */
 151     rlim_t rlim_cur;
 152     /* The hard limit.  */
 153     rlim_t rlim_max;
 154   };
 155
 156 #ifdef __USE_LARGEFILE64
 157 struct rlimit64
 158   {
 159     /* The current (soft) limit.  */
 160     rlim64_t rlim_cur;
 161     /* The hard limit.  */
 162     rlim64_t rlim_max;
 163  };
 164 #endif
 165
 166 /* Whose usage statistics do you want?  */
 167 enum __rusage_who
 168 {
 169   /* The calling process.  */
 170   RUSAGE_SELF = 0,
 171 #define RUSAGE_SELF RUSAGE_SELF
 172
 173   /* All of its terminated child processes.  */
 174   RUSAGE_CHILDREN = -1
 175 #define RUSAGE_CHILDREN RUSAGE_CHILDREN
 176
 177 #ifdef __USE_GNU
 178   ,
 179   /* The calling thread.  */
 180   RUSAGE_THREAD = 1
 181 # define RUSAGE_THREAD RUSAGE_THREAD
 182   /* Name for the same functionality on Solaris.  */
 183 # define RUSAGE_LWP RUSAGE_THREAD
 184 #endif
 185 };
 186
 187 #define __need_timeval
 188 #include <bits/time.h>          /* For `struct timeval'.  */
 189
 190 /* Structure which says how much of each resource has been used.  */
 191 struct rusage
 192   {
 193     /* Total amount of user time used.  */
 194     struct timeval ru_utime;
 195     /* Total amount of system time used.  */
 196     struct timeval ru_stime;
 197     /* Maximum resident set size (in kilobytes).  */
 198     long int ru_maxrss;
 199     /* Amount of sharing of text segment memory
 200        with other processes (kilobyte-seconds).  */
 201     long int ru_ixrss;
 202     /* Amount of data segment memory used (kilobyte-seconds).  */
 203     long int ru_idrss;
 204     /* Amount of stack memory used (kilobyte-seconds).  */
 205     long int ru_isrss;
 206     /* Number of soft page faults (i.e. those serviced by reclaiming
 207        a page from the list of pages awaiting reallocation.  */
 208     long int ru_minflt;
 209     /* Number of hard page faults (i.e. those that required I/O).  */
 210     long int ru_majflt;
 211     /* Number of times a process was swapped out of physical memory.  */
 212     long int ru_nswap;
 213     /* Number of input operations via the file system.  Note: This
 214        and `ru_oublock' do not include operations with the cache.  */
 215     long int ru_inblock;
 216     /* Number of output operations via the file system.  */
 217     long int ru_oublock;
 218     /* Number of IPC messages sent.  */
 219     long int ru_msgsnd;
 220     /* Number of IPC messages received.  */
 221     long int ru_msgrcv;
 222     /* Number of signals delivered.  */
 223     long int ru_nsignals;
 224     /* Number of voluntary context switches, i.e. because the process
 225        gave up the process before it had to (usually to wait for some
 226        resource to be available).  */
 227     long int ru_nvcsw;
 228     /* Number of involuntary context switches, i.e. a higher priority process
 229        became runnable or the current process used up its time slice.  */
 230     long int ru_nivcsw;
 231   };
 232
 233 /* Priority limits.  */
 234 #define PRIO_MIN        -20     /* Minimum priority a process can have.  */
 235 #define PRIO_MAX        20      /* Maximum priority a process can have.  */
 236
 237 /* The type of the WHICH argument to `getpriority' and `setpriority',
 238    indicating what flavor of entity the WHO argument specifies.  */
 239 enum __priority_which
 240 {
 241   PRIO_PROCESS = 0,             /* WHO is a process ID.  */
 242 #define PRIO_PROCESS PRIO_PROCESS
 243   PRIO_PGRP = 1,                /* WHO is a process group ID.  */
 244 #define PRIO_PGRP PRIO_PGRP
 245   PRIO_USER = 2                 /* WHO is a user ID.  */
 246 #define PRIO_USER PRIO_USER
 247 };