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| 1 /* | |
| 2 * Copyright (C) 2012 University of Szeged. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #include "config.h" | |
| 27 #include "NumberOfCores.h" | |
| 28 | |
| 29 #if OS(DARWIN) || OS(OPENBSD) || OS(NETBSD) || OS(FREEBSD) | |
| 30 #include <sys/param.h> | |
| 31 // sys/types.h must come before sys/sysctl.h because the latter uses | |
| 32 // data types defined in the former. See sysctl(3) and style(9). | |
| 33 #include <sys/types.h> | |
| 34 #include <sys/sysctl.h> | |
| 35 #elif OS(LINUX) || OS(AIX) || OS(SOLARIS) | |
| 36 #include <unistd.h> | |
| 37 #elif OS(WINDOWS) || OS(QNX) | |
| 38 #include <wtf/UnusedParam.h> | |
| 39 #if OS(WINDOWS) | |
| 40 #include <windows.h> | |
| 41 #elif OS(QNX) | |
| 42 #include <sys/syspage.h> | |
| 43 #endif | |
| 44 #endif | |
| 45 | |
| 46 namespace WTF { | |
| 47 | |
| 48 int numberOfProcessorCores() | |
| 49 { | |
| 50 const int defaultIfUnavailable = 1; | |
| 51 static int s_numberOfCores = -1; | |
| 52 | |
| 53 if (s_numberOfCores > 0) | |
| 54 return s_numberOfCores; | |
| 55 | |
| 56 #if OS(DARWIN) || OS(OPENBSD) || OS(NETBSD) || OS(FREEBSD) | |
| 57 unsigned result; | |
| 58 size_t length = sizeof(result); | |
| 59 int name[] = { | |
| 60 CTL_HW, | |
| 61 HW_NCPU | |
| 62 }; | |
| 63 int sysctlResult = sysctl(name, sizeof(name) / sizeof(int), &result, &length
, 0, 0); | |
| 64 | |
| 65 s_numberOfCores = sysctlResult < 0 ? defaultIfUnavailable : result; | |
| 66 #elif OS(LINUX) || OS(AIX) || OS(SOLARIS) | |
| 67 long sysconfResult = sysconf(_SC_NPROCESSORS_ONLN); | |
| 68 | |
| 69 s_numberOfCores = sysconfResult < 0 ? defaultIfUnavailable : static_cast<int
>(sysconfResult); | |
| 70 #elif OS(WINDOWS) | |
| 71 UNUSED_PARAM(defaultIfUnavailable); | |
| 72 SYSTEM_INFO sysInfo; | |
| 73 GetSystemInfo(&sysInfo); | |
| 74 | |
| 75 s_numberOfCores = sysInfo.dwNumberOfProcessors; | |
| 76 #elif OS(QNX) | |
| 77 UNUSED_PARAM(defaultIfUnavailable); | |
| 78 | |
| 79 s_numberOfCores = _syspage_ptr->num_cpu; | |
| 80 #else | |
| 81 s_numberOfCores = defaultIfUnavailable; | |
| 82 #endif | |
| 83 return s_numberOfCores; | |
| 84 } | |
| 85 | |
| 86 } | |
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Chromium Code Reviews
Issue 14238015:
Move Source/WTF/wtf to Source/wtf (Closed)
Base URL: svn://svn.chromium.org/blink/trunk