194 lines
6.5 KiB
C
194 lines
6.5 KiB
C
/* Bit values & structures for resource limits. 4.4 BSD/generic GNU version.
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Copyright (C) 1994,1996,1997,1998,2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _SYS_RESOURCE_H
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# error "Never use <bits/resource.h> directly; include <sys/resource.h> instead."
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#endif
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#include <bits/types.h>
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/* These are the values for 4.4 BSD and GNU. Earlier BSD systems have a
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subset of these kinds of resource limit. In systems where `getrlimit'
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and `setrlimit' are not system calls, these are the values used by the C
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library to emulate them. */
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/* Kinds of resource limit. */
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enum __rlimit_resource
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{
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/* Per-process CPU limit, in seconds. */
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RLIMIT_CPU,
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#define RLIMIT_CPU RLIMIT_CPU
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/* Largest file that can be created, in bytes. */
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RLIMIT_FSIZE,
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#define RLIMIT_FSIZE RLIMIT_FSIZE
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/* Maximum size of data segment, in bytes. */
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RLIMIT_DATA,
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#define RLIMIT_DATA RLIMIT_DATA
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/* Maximum size of stack segment, in bytes. */
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RLIMIT_STACK,
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#define RLIMIT_STACK RLIMIT_STACK
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/* Largest core file that can be created, in bytes. */
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RLIMIT_CORE,
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#define RLIMIT_CORE RLIMIT_CORE
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/* Largest resident set size, in bytes.
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This affects swapping; processes that are exceeding their
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resident set size will be more likely to have physical memory
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taken from them. */
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RLIMIT_RSS,
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#define RLIMIT_RSS RLIMIT_RSS
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/* Locked-in-memory address space. */
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RLIMIT_MEMLOCK,
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#define RLIMIT_MEMLOCK RLIMIT_MEMLOCK
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/* Number of processes. */
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RLIMIT_NPROC,
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#define RLIMIT_NPROC RLIMIT_NPROC
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/* Number of open files. */
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RLIMIT_OFILE,
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RLIMIT_NOFILE = RLIMIT_OFILE, /* Another name for the same thing. */
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#define RLIMIT_OFILE RLIMIT_OFILE
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#define RLIMIT_NOFILE RLIMIT_NOFILE
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/* Maximum size of all socket buffers. */
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RLIMIT_SBSIZE,
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#define RLIMIT_SBSIZE RLIMIT_SBSIZE
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/* Maximum size in bytes of the process address space. */
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RLIMIT_AS,
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RLIMIT_VMEM = RLIMIT_AS, /* Another name for the same thing. */
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#define RLIMIT_AS RLIMIT_AS
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#define RLIMIT_VMEM RLIMIT_AS
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RLIMIT_NLIMITS, /* Number of limit flavors. */
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RLIM_NLIMITS = RLIMIT_NLIMITS /* Traditional name for same. */
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};
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/* Value to indicate that there is no limit. */
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#ifndef __USE_FILE_OFFSET64
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# define RLIM_INFINITY 0x7fffffff
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#else
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# define RLIM_INFINITY 0x7fffffffffffffffLL
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#endif
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#ifdef __USE_LARGEFILE64
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# define RLIM64_INFINITY 0x7fffffffffffffffLL
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#endif
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/* Type for resource quantity measurement. */
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#ifndef __USE_FILE_OFFSET64
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typedef __rlim_t rlim_t;
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#else
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typedef __rlim64_t rlim_t;
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#endif
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#ifdef __USE_LARGEFILE64
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typedef __rlim64_t rlim64_t;
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#endif
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struct rlimit
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{
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/* The current (soft) limit. */
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rlim_t rlim_cur;
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/* The hard limit. */
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rlim_t rlim_max;
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};
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#ifdef __USE_LARGEFILE64
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struct rlimit64
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{
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/* The current (soft) limit. */
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rlim64_t rlim_cur;
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/* The hard limit. */
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rlim64_t rlim_max;
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};
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#endif
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/* Whose usage statistics do you want? */
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enum __rusage_who
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/* The macro definitions are necessary because some programs want
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to test for operating system features with #ifdef RUSAGE_SELF.
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In ISO C the reflexive definition is a no-op. */
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{
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/* The calling process. */
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RUSAGE_SELF = 0,
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#define RUSAGE_SELF RUSAGE_SELF
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/* All of its terminated child processes. */
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RUSAGE_CHILDREN = -1
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#define RUSAGE_CHILDREN RUSAGE_CHILDREN
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};
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#define __need_timeval
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#include <bits/time.h> /* For `struct timeval'. */
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/* Structure which says how much of each resource has been used. */
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struct rusage
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{
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/* Total amount of user time used. */
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struct timeval ru_utime;
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/* Total amount of system time used. */
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struct timeval ru_stime;
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/* Maximum resident set size (in kilobytes). */
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long int ru_maxrss;
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/* Amount of sharing of text segment memory
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with other processes (kilobyte-seconds). */
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long int ru_ixrss;
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/* Amount of data segment memory used (kilobyte-seconds). */
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long int ru_idrss;
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/* Amount of stack memory used (kilobyte-seconds). */
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long int ru_isrss;
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/* Number of soft page faults (i.e. those serviced by reclaiming
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a page from the list of pages awaiting reallocation. */
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long int ru_minflt;
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/* Number of hard page faults (i.e. those that required I/O). */
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long int ru_majflt;
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/* Number of times a process was swapped out of physical memory. */
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long int ru_nswap;
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/* Number of input operations via the file system. Note: This
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and `ru_oublock' do not include operations with the cache. */
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long int ru_inblock;
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/* Number of output operations via the file system. */
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long int ru_oublock;
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/* Number of IPC messages sent. */
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long int ru_msgsnd;
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/* Number of IPC messages received. */
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long int ru_msgrcv;
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/* Number of signals delivered. */
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long int ru_nsignals;
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/* Number of voluntary context switches, i.e. because the process
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gave up the process before it had to (usually to wait for some
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resource to be available). */
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long int ru_nvcsw;
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/* Number of involuntary context switches, i.e. a higher priority process
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became runnable or the current process used up its time slice. */
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long int ru_nivcsw;
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};
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/* Priority limits. */
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#define PRIO_MIN -20 /* Minimum priority a process can have. */
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#define PRIO_MAX 20 /* Maximum priority a process can have. */
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/* The type of the WHICH argument to `getpriority' and `setpriority',
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indicating what flavor of entity the WHO argument specifies. */
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enum __priority_which
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{
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PRIO_PROCESS = 0, /* WHO is a process ID. */
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#define PRIO_PROCESS PRIO_PROCESS
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PRIO_PGRP = 1, /* WHO is a process group ID. */
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#define PRIO_PGRP PRIO_PGRP
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PRIO_USER = 2 /* WHO is a user ID. */
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#define PRIO_USER PRIO_USER
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};
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