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- /* Bit values & structures for resource limits. Linux version.
- Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2004, 2005
- Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #ifndef _SYS_RESOURCE_H
- # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead."
- #endif
- #include <bits/types.h>
- /* Transmute defines to enumerations. The macro re-definitions are
- necessary because some programs want to test for operating system
- features with #ifdef RUSAGE_SELF. In ISO C the reflexive
- definition is a no-op. */
- /* Kinds of resource limit. */
- enum __rlimit_resource
- {
- /* Per-process CPU limit, in seconds. */
- RLIMIT_CPU = 0,
- #define RLIMIT_CPU RLIMIT_CPU
- /* Largest file that can be created, in bytes. */
- RLIMIT_FSIZE = 1,
- #define RLIMIT_FSIZE RLIMIT_FSIZE
- /* Maximum size of data segment, in bytes. */
- RLIMIT_DATA = 2,
- #define RLIMIT_DATA RLIMIT_DATA
- /* Maximum size of stack segment, in bytes. */
- RLIMIT_STACK = 3,
- #define RLIMIT_STACK RLIMIT_STACK
- /* Largest core file that can be created, in bytes. */
- RLIMIT_CORE = 4,
- #define RLIMIT_CORE RLIMIT_CORE
- /* Largest resident set size, in bytes.
- This affects swapping; processes that are exceeding their
- resident set size will be more likely to have physical memory
- taken from them. */
- __RLIMIT_RSS = 5,
- #define RLIMIT_RSS __RLIMIT_RSS
- /* Number of open files. */
- RLIMIT_NOFILE = 7,
- __RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same. */
- #define RLIMIT_NOFILE RLIMIT_NOFILE
- #define RLIMIT_OFILE __RLIMIT_OFILE
- /* Address space limit. */
- RLIMIT_AS = 9,
- #define RLIMIT_AS RLIMIT_AS
- /* Number of processes. */
- __RLIMIT_NPROC = 6,
- #define RLIMIT_NPROC __RLIMIT_NPROC
- /* Locked-in-memory address space. */
- __RLIMIT_MEMLOCK = 8,
- #define RLIMIT_MEMLOCK __RLIMIT_MEMLOCK
- /* Maximum number of file locks. */
- __RLIMIT_LOCKS = 10,
- #define RLIMIT_LOCKS __RLIMIT_LOCKS
- /* Maximum number of pending signals. */
- __RLIMIT_SIGPENDING = 11,
- #define RLIMIT_SIGPENDING __RLIMIT_SIGPENDING
- /* Maximum bytes in POSIX message queues. */
- __RLIMIT_MSGQUEUE = 12,
- #define RLIMIT_MSGQUEUE __RLIMIT_MSGQUEUE
- /* Maximum nice priority allowed to raise to.
- Nice levels 19 .. -20 correspond to 0 .. 39
- values of this resource limit. */
- __RLIMIT_NICE = 13,
- #define RLIMIT_NICE __RLIMIT_NICE
- /* Maximum realtime priority allowed for non-priviledged
- processes. */
- __RLIMIT_RTPRIO = 14,
- #define RLIMIT_RTPRIO __RLIMIT_RTPRIO
- __RLIMIT_NLIMITS = 15,
- __RLIM_NLIMITS = __RLIMIT_NLIMITS
- #define RLIMIT_NLIMITS __RLIMIT_NLIMITS
- #define RLIM_NLIMITS __RLIM_NLIMITS
- };
- /* Value to indicate that there is no limit. */
- #ifndef __USE_FILE_OFFSET64
- # define RLIM_INFINITY ((unsigned long int)(~0UL))
- #else
- # define RLIM_INFINITY 0xffffffffffffffffuLL
- #endif
- #ifdef __USE_LARGEFILE64
- # define RLIM64_INFINITY 0xffffffffffffffffuLL
- #endif
- /* We can represent all limits. */
- #define RLIM_SAVED_MAX RLIM_INFINITY
- #define RLIM_SAVED_CUR RLIM_INFINITY
- /* Type for resource quantity measurement. */
- #ifndef __USE_FILE_OFFSET64
- typedef __rlim_t rlim_t;
- #else
- typedef __rlim64_t rlim_t;
- #endif
- #ifdef __USE_LARGEFILE64
- typedef __rlim64_t rlim64_t;
- #endif
- struct rlimit
- {
- /* The current (soft) limit. */
- rlim_t rlim_cur;
- /* The hard limit. */
- rlim_t rlim_max;
- };
- #ifdef __USE_LARGEFILE64
- struct rlimit64
- {
- /* The current (soft) limit. */
- rlim64_t rlim_cur;
- /* The hard limit. */
- rlim64_t rlim_max;
- };
- #endif
- /* Whose usage statistics do you want? */
- enum __rusage_who
- {
- /* The calling process. */
- RUSAGE_SELF = 0,
- #define RUSAGE_SELF RUSAGE_SELF
- /* All of its terminated child processes. */
- RUSAGE_CHILDREN = -1
- #define RUSAGE_CHILDREN RUSAGE_CHILDREN
- };
- #define __need_timeval
- #include <bits/time.h> /* For `struct timeval'. */
- /* Structure which says how much of each resource has been used. */
- struct rusage
- {
- /* Total amount of user time used. */
- struct timeval ru_utime;
- /* Total amount of system time used. */
- struct timeval ru_stime;
- /* Maximum resident set size (in kilobytes). */
- long int ru_maxrss;
- /* Amount of sharing of text segment memory
- with other processes (kilobyte-seconds). */
- long int ru_ixrss;
- /* Amount of data segment memory used (kilobyte-seconds). */
- long int ru_idrss;
- /* Amount of stack memory used (kilobyte-seconds). */
- long int ru_isrss;
- /* Number of soft page faults (i.e. those serviced by reclaiming
- a page from the list of pages awaiting reallocation. */
- long int ru_minflt;
- /* Number of hard page faults (i.e. those that required I/O). */
- long int ru_majflt;
- /* Number of times a process was swapped out of physical memory. */
- long int ru_nswap;
- /* Number of input operations via the file system. Note: This
- and `ru_oublock' do not include operations with the cache. */
- long int ru_inblock;
- /* Number of output operations via the file system. */
- long int ru_oublock;
- /* Number of IPC messages sent. */
- long int ru_msgsnd;
- /* Number of IPC messages received. */
- long int ru_msgrcv;
- /* Number of signals delivered. */
- long int ru_nsignals;
- /* Number of voluntary context switches, i.e. because the process
- gave up the process before it had to (usually to wait for some
- resource to be available). */
- long int ru_nvcsw;
- /* Number of involuntary context switches, i.e. a higher priority process
- became runnable or the current process used up its time slice. */
- long int ru_nivcsw;
- };
- /* Priority limits. */
- #define PRIO_MIN -20 /* Minimum priority a process can have. */
- #define PRIO_MAX 20 /* Maximum priority a process can have. */
- /* The type of the WHICH argument to `getpriority' and `setpriority',
- indicating what flavor of entity the WHO argument specifies. */
- enum __priority_which
- {
- PRIO_PROCESS = 0, /* WHO is a process ID. */
- #define PRIO_PROCESS PRIO_PROCESS
- PRIO_PGRP = 1, /* WHO is a process group ID. */
- #define PRIO_PGRP PRIO_PGRP
- PRIO_USER = 2 /* WHO is a user ID. */
- #define PRIO_USER PRIO_USER
- };
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