bind/lib/isc/unix/os.c

/*
 * Copyright (C) 2000  Internet Software Consortium.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
 * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
 * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/* $Id: os.c,v 1.5 2000/08/01 01:31:25 tale Exp $ */

#include <config.h>

#include <unistd.h>

#include <isc/os.h>

unsigned int
isc_os_ncpus(void) {
	long ncpus = 1;

#if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
	ncpus = sysconf(_SC_NPROCESSORS_ONLN);
	if (ncpus <= 0)
		ncpus = 1;
#endif

	return ((unsigned int)ncpus);
}