1/*	$NetBSD: os.c,v 1.6 2020/05/25 20:47:23 christos Exp $	*/
2
3/*
4 * Copyright (C) 2004, 2007  Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (C) 2000-2002  Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/* Id: os.c,v 1.8 2007/06/19 23:47:19 tbox Exp  */
21
22#include <windows.h>
23
24#include <isc/os.h>
25
26static BOOL bInit = FALSE;
27static SYSTEM_INFO SystemInfo;
28
29static void
30initialize_action(void) {
31	if (bInit)
32		return;
33
34	GetSystemInfo(&SystemInfo);
35	bInit = TRUE;
36}
37
38unsigned int
39isc_os_ncpus(void) {
40	long ncpus = 1;
41	initialize_action();
42	ncpus = SystemInfo.dwNumberOfProcessors;
43	if (ncpus <= 0)
44		ncpus = 1;
45
46	return ((unsigned int)ncpus);
47}
48