1 /* $NetBSD: os.c,v 1.5 2014/12/10 04:38:01 christos Exp $ */
2
3 /*
4 * Copyright (C) 2004, 2007, 2013 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
26 static BOOL bInit = FALSE;
27 static SYSTEM_INFO SystemInfo;
28
29 static void
initialize_action(void)30 initialize_action(void) {
31 if (bInit)
32 return;
33
34 GetSystemInfo(&SystemInfo);
35 bInit = TRUE;
36 }
37
38 unsigned int
isc_os_ncpus(void)39 isc_os_ncpus(void) {
40 long ncpus;
41 initialize_action();
42 ncpus = SystemInfo.dwNumberOfProcessors;
43 if (ncpus <= 0)
44 ncpus = 1;
45
46 return ((unsigned int)ncpus);
47 }
48