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/*
* Copyright (c) 1997, 98, 2000, 01
* Motoyuki Kasahara
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*/
/*
* This program requires the following Autoconf macros:
* AC_CHECK_HEADERS(unistd.h)
* AC_CHECK_FUNCS(getdtablesize, getrlimit, sysconf)
* AC_HEADER_TIME
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#ifdef HAVE_GETDTABLESIZE
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#else /* not HAVE_GETDTABLESIZE */
#ifdef HAVE_GETRLIMIT
#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else /* not TIME_WITH_SYS_TIME */
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else /* not HAVE_SYS_TIME_H */
#include <time.h>
#endif /* not HAVE_SYS_TIME_H */
#endif /* not TIME_WITH_SYS_TIME */
#include <sys/resource.h>
#else /* not HAVE_GETRLIMIT */
#ifdef HAVE_SYSCONF
#include <limits.h>
#else /* not HAVE_SYSCONF */
#include <sys/param.h>
#ifndef NOFILE
#define DEFAULT_OPEN_MAX 128
#endif /* not NOFILE */
#endif /* not HAVE_SYSCONF */
#endif /* not HAVE_GETRLIMIT */
#endif /* not HAVE_GETDTABLESIZE */
/*
* Get the maximum number of open files.
*/
int
get_open_max()
{
int open_max;
#ifdef HAVE_GETDTABLESIZE
open_max = getdtablesize();
#else /* not HAVE_GETDTABLESIZE */
#ifdef HAVE_GETRLIMIT
{
struct rlimit limit;
getrlimit(RLIMIT_NOFILE, &limit);
open_max = limit.rlim_cur;
}
#else /* not HAVE_GETRLIMIT */
#ifdef HAVE_SYSCONF
open_max = sysconf(_SC_OPEN_MAX);
#else /* not HAVE_SYSCONF */
#ifdef NOFILE
open_max = NOFILE;
#else /* not NOFILE */
open_max = DEFAULT_OPEN_MAX;
#endif /* not NOFILE */
#endif /* not HAVE_SYSCONF */
#endif /* not HAVE_GETRLIMIT */
#endif /* not HAVE_GETDTABLESIZE */
return open_max;
}
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