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/* Bit values & structures for resource limits. 4.4 BSD/generic GNU version.
Copyright (C) 1994, 1996 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
/* These are the values for 4.4 BSD and GNU. Earlier BSD systems have a
subset of these kinds of resource limit. In systems where `getrlimit'
and `setrlimit' are not system calls, these are the values used by the C
library to emulate them. */
/* Kinds of resource limit. */
enum __rlimit_resource
{
/* Per-process CPU limit, in seconds. */
RLIMIT_CPU,
#define RLIMIT_CPU RLIMIT_CPU
/* Largest file that can be created, in bytes. */
RLIMIT_FSIZE,
#define RLIMIT_FSIZE RLIMIT_FSIZE
/* Maximum size of data segment, in bytes. */
RLIMIT_DATA,
#define RLIMIT_DATA RLIMIT_DATA
/* Maximum size of stack segment, in bytes. */
RLIMIT_STACK,
#define RLIMIT_STACK RLIMIT_STACK
/* Largest core file that can be created, in bytes. */
RLIMIT_CORE,
#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,
#define RLIMIT_RSS RLIMIT_RSS
/* Locked-in-memory address space. */
RLIMIT_MEMLOCK,
#define RLIMIT_MEMLOCK RLIMIT_MEMLOCK
/* Number of processes. */
RLIMIT_NPROC,
#define RLIMIT_NPROC RLIMIT_NPROC
/* Number of open files. */
RLIMIT_OFILE,
RLIMIT_NOFILE = RLIMIT_OFILE, /* Another name for the same thing. */
#define RLIMIT_OFILE RLIMIT_OFILE
#define RLIMIT_NOFILE RLIMIT_NOFILE
RLIMIT_NLIMITS, /* Number of limit flavors. */
RLIM_NLIMITS = RLIMIT_NLIMITS, /* Traditional name for same. */
RLIM_INFINITY = 0x7fffffff /* Value to indicate that there is no limit. */
#define RLIM_INFINITY RLIM_INFINITY
};
struct rlimit
{
/* The current (soft) limit. */
int rlim_cur;
/* The hard limit. */
int rlim_max;
};
/* Whose usage statistics do you want? */
enum __rusage_who
/* The macro 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. */
{
/* 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
};
#include <sys/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. */
PRIO_PGRP = 1, /* WHO is a process group ID. */
PRIO_USER = 2 /* WHO is a user ID. */
};
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