2000-09-29 01:32:14 +00:00
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/* Bit values & structures for resource limits. Linux/SPARC version.
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2018-01-01 00:32:25 +00:00
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Copyright (C) 1994-2018 Free Software Foundation, Inc.
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1999-12-18 19:45:25 +00:00
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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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2001-07-06 04:58:11 +00:00
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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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1999-12-18 19:45:25 +00:00
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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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2001-07-06 04:58:11 +00:00
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Lesser General Public License for more details.
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1999-12-18 19:45:25 +00:00
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2001-07-06 04:58:11 +00:00
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You should have received a copy of the GNU Lesser General Public
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2012-02-09 23:18:22 +00:00
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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1999-12-18 19:45:25 +00:00
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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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/* Transmute defines to enumerations. The macro re-definitions are
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necessary because some programs want to test for operating system
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features with #ifdef RUSAGE_SELF. In ISO C the reflexive
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definition is a no-op. */
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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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1999-12-19 00:04:05 +00:00
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RLIMIT_CPU = 0,
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1999-12-18 19:45:25 +00:00
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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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1999-12-19 00:04:05 +00:00
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RLIMIT_FSIZE = 1,
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1999-12-18 19:45:25 +00:00
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#define RLIMIT_FSIZE RLIMIT_FSIZE
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/* Maximum size of data segment, in bytes. */
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1999-12-19 00:04:05 +00:00
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RLIMIT_DATA = 2,
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1999-12-18 19:45:25 +00:00
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#define RLIMIT_DATA RLIMIT_DATA
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/* Maximum size of stack segment, in bytes. */
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1999-12-19 00:04:05 +00:00
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RLIMIT_STACK = 3,
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1999-12-18 19:45:25 +00:00
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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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1999-12-19 00:04:05 +00:00
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RLIMIT_CORE = 4,
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1999-12-18 19:45:25 +00:00
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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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2004-08-12 18:05:59 +00:00
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__RLIMIT_RSS = 5,
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#define RLIMIT_RSS __RLIMIT_RSS
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1999-12-18 19:45:25 +00:00
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/* Number of open files. */
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1999-12-19 00:04:05 +00:00
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RLIMIT_NOFILE = 6,
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2004-08-12 18:05:59 +00:00
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__RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same. */
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1999-12-18 19:45:25 +00:00
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#define RLIMIT_NOFILE RLIMIT_NOFILE
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2004-08-12 18:05:59 +00:00
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#define RLIMIT_OFILE __RLIMIT_OFILE
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1999-12-18 19:45:25 +00:00
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/* Address space limit (?) */
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1999-12-19 00:04:05 +00:00
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RLIMIT_AS = 9,
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1999-12-18 19:45:25 +00:00
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#define RLIMIT_AS RLIMIT_AS
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/* Number of processes. */
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2004-08-12 18:05:59 +00:00
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__RLIMIT_NPROC = 7,
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#define RLIMIT_NPROC __RLIMIT_NPROC
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1999-12-18 19:45:25 +00:00
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/* Locked-in-memory address space. */
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2004-08-12 18:05:59 +00:00
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__RLIMIT_MEMLOCK = 8,
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#define RLIMIT_MEMLOCK __RLIMIT_MEMLOCK
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1999-12-18 19:45:25 +00:00
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2000-09-29 01:32:14 +00:00
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/* Maximum number of file locks. */
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2004-08-12 18:05:59 +00:00
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__RLIMIT_LOCKS = 10,
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#define RLIMIT_LOCKS __RLIMIT_LOCKS
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2000-09-29 01:32:14 +00:00
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2004-08-12 18:05:59 +00:00
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/* Maximum number of pending signals. */
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__RLIMIT_SIGPENDING = 11,
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#define RLIMIT_SIGPENDING __RLIMIT_SIGPENDING
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/* Maximum bytes in POSIX message queues. */
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__RLIMIT_MSGQUEUE = 12,
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#define RLIMIT_MSGQUEUE __RLIMIT_MSGQUEUE
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2005-06-20 15:08:12 +00:00
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/* Maximum nice priority allowed to raise to.
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Nice levels 19 .. -20 correspond to 0 .. 39
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values of this resource limit. */
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__RLIMIT_NICE = 13,
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#define RLIMIT_NICE __RLIMIT_NICE
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/* Maximum realtime priority allowed for non-priviledged
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processes. */
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__RLIMIT_RTPRIO = 14,
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2005-06-21 18:39:48 +00:00
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#define RLIMIT_RTPRIO __RLIMIT_RTPRIO
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2005-06-20 15:08:12 +00:00
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2011-05-23 19:53:37 +00:00
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/* Maximum CPU time in µs that a process scheduled under a real-time
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scheduling policy may consume without making a blocking system
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call before being forcibly descheduled. */
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__RLIMIT_RTTIME = 15,
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#define RLIMIT_RTTIME __RLIMIT_RTTIME
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__RLIMIT_NLIMITS = 16,
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2004-08-12 18:05:59 +00:00
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__RLIM_NLIMITS = __RLIMIT_NLIMITS
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#define RLIMIT_NLIMITS __RLIMIT_NLIMITS
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#define RLIM_NLIMITS __RLIM_NLIMITS
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1999-12-18 19:45:25 +00:00
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};
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/* Value to indicate that there is no limit. */
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#if __WORDSIZE == 64
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#ifndef __USE_FILE_OFFSET64
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# define RLIM_INFINITY ((unsigned long int)(~0UL))
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#else
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# define RLIM_INFINITY 0xffffffffffffffffuLL
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#endif
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#ifdef __USE_LARGEFILE64
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# define RLIM64_INFINITY 0xffffffffffffffffuLL
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#endif
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#else
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#ifndef __USE_FILE_OFFSET64
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# define RLIM_INFINITY ((long int)(~0UL >> 1))
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#else
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2011-08-14 11:07:50 +00:00
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# define RLIM_INFINITY 0xffffffffffffffffLL
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1999-12-18 19:45:25 +00:00
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#endif
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#ifdef __USE_LARGEFILE64
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2011-08-14 11:07:50 +00:00
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# define RLIM64_INFINITY 0xffffffffffffffffLL
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1999-12-18 19:45:25 +00:00
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#endif
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#endif
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/* We can represent all limits. */
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#define RLIM_SAVED_MAX RLIM_INFINITY
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#define RLIM_SAVED_CUR RLIM_INFINITY
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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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{
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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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2009-01-08 10:16:12 +00:00
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RUSAGE_CHILDREN = -1
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1999-12-18 19:45:25 +00:00
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#define RUSAGE_CHILDREN RUSAGE_CHILDREN
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2008-05-01 05:37:45 +00:00
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#ifdef __USE_GNU
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2009-01-08 10:16:12 +00:00
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,
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2008-05-01 05:37:45 +00:00
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/* The calling thread. */
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RUSAGE_THREAD = 1
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# define RUSAGE_THREAD RUSAGE_THREAD
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/* Name for the same functionality on Solaris. */
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# define RUSAGE_LWP RUSAGE_THREAD
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#endif
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1999-12-18 19:45:25 +00:00
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};
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Installed-header hygiene (BZ#20366): time.h types.
Many headers are expected to expose a subset of the type definitions
in time.h. time.h has a whole bunch of messy logic for conditionally
defining some its types and structs, but, as best I can tell, this
has never worked 100%. In particular, __need_timespec is ineffective
if _TIME_H has already been defined, which means that if you compile
#include <time.h>
#include <sched.h>
with e.g. -fsyntax-only -std=c89 -Wall -Wsystem-headers, you will get
In file included from test.c:2:0:
/usr/include/sched.h:74:57: warning: "struct timespec" declared inside
parameter list will not be visible outside of this definition or declaration
extern int sched_rr_get_interval (__pid_t __pid, struct timespec *__t) __THROW;
^~~~~~~~
And if you want to _use_ sched_rr_get_interval in a TU compiled that
way, you're hosed.
This patch replaces all of that with small bits/types/TYPE.h headers
as introduced earlier. time.h and bits/time.h are now *much* simpler,
and a lot of other headers are slightly simpler.
* time/time.h, bits/time.h, sysdeps/unix/sysv/linux/bits/time.h:
Remove all logic conditional on __need macros. Move all the
conditionally defined types to their own headers...
* time/bits/types/clock_t.h: Define clock_t here.
* time/bits/types/clockid_t.h: Define clockid_t here.
* time/bits/types/struct_itimerspec.h: Define struct itimerspec here.
* time/bits/types/struct_timespec.h: Define struct timespec here.
* time/bits/types/struct_timeval.h: Define struct timeval here.
* time/bits/types/struct_tm.h: Define struct tm here.
* time/bits/types/time_t.h: Define time_t here.
* time/bits/types/timer_t.h: Define timer_t here.
* time/Makefile: Install the new headers.
* bits/resource.h, io/fcntl.h, io/sys/poll.h, io/sys/stat.h
* io/utime.h, misc/sys/select.h, posix/sched.h, posix/sys/times.h
* posix/sys/types.h, resolv/netdb.h, rt/aio.h, rt/mqueue.h
* signal/signal.h, pthread/semaphore.h, sysdeps/nptl/pthread.h
* sysdeps/unix/sysv/linux/alpha/bits/resource.h
* sysdeps/unix/sysv/linux/alpha/sys/acct.h
* sysdeps/unix/sysv/linux/bits/resource.h
* sysdeps/unix/sysv/linux/bits/timex.h
* sysdeps/unix/sysv/linux/mips/bits/resource.h
* sysdeps/unix/sysv/linux/net/ppp_defs.h
* sysdeps/unix/sysv/linux/sparc/bits/resource.h
* sysdeps/unix/sysv/linux/sys/acct.h
* sysdeps/unix/sysv/linux/sys/timerfd.h
* sysvipc/sys/msg.h, sysvipc/sys/sem.h, sysvipc/sys/shm.h
* time/sys/time.h, time/sys/timeb.h
Use the new bits/types headers.
* include/time.h: Remove __need logic.
* include/bits/time.h
* include/bits/types/clock_t.h, include/bits/types/clockid_t.h
* include/bits/types/time_t.h, include/bits/types/timer_t.h
* include/bits/types/struct_itimerspec.h
* include/bits/types/struct_timespec.h
* include/bits/types/struct_timeval.h
* include/bits/types/struct_tm.h:
New wrapper headers.
2016-08-24 15:54:34 +00:00
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#include <bits/types/struct_timeval.h>
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2017-06-19 11:59:19 +00:00
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#include <bits/types/struct_rusage.h>
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1999-12-18 19:45:25 +00:00
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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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2014-05-15 22:04:41 +00:00
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__BEGIN_DECLS
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#ifdef __USE_GNU
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/* Modify and return resource limits of a process atomically. */
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# ifndef __USE_FILE_OFFSET64
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extern int prlimit (__pid_t __pid, enum __rlimit_resource __resource,
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const struct rlimit *__new_limit,
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struct rlimit *__old_limit) __THROW;
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# else
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# ifdef __REDIRECT_NTH
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extern int __REDIRECT_NTH (prlimit, (__pid_t __pid,
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enum __rlimit_resource __resource,
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const struct rlimit *__new_limit,
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struct rlimit *__old_limit), prlimit64);
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# else
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# define prlimit prlimit64
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# endif
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# endif
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# ifdef __USE_LARGEFILE64
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extern int prlimit64 (__pid_t __pid, enum __rlimit_resource __resource,
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const struct rlimit64 *__new_limit,
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struct rlimit64 *__old_limit) __THROW;
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# endif
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#endif
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__END_DECLS
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