os.c revision 1.5
1/* $NetBSD: os.c,v 1.5 2018/09/29 21:52:33 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 */ 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