Mercurial > hg > truffle
view test/testlibrary/whitebox/sun/hotspot/cpuinfo/CPUInfo.java @ 21803:30b03297ba94
change phase order (ConvertDeoptimizeToGuard earlier, PEA after loop peeling/unswitching)
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Tue, 09 Jun 2015 11:06:32 +0200 |
parents | a48e16541e6b |
children |
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/* * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ package sun.hotspot.cpuinfo; import java.util.List; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.regex.Pattern; import java.util.regex.Matcher; import sun.hotspot.WhiteBox; /** * Information about CPU on test box. * * CPUInfo uses WhiteBox to gather information, * so WhiteBox class should be added to bootclasspath * and option -XX:+WhiteBoxAPI should expclicetly * specified on command line. */ public class CPUInfo { private static final List<String> features; private static final String additionalCPUInfo; static { WhiteBox wb = WhiteBox.getWhiteBox(); Pattern additionalCPUInfoRE = Pattern.compile("([^(]*\\([^)]*\\)[^,]*),\\s*"); String cpuFeaturesString = wb.getCPUFeatures(); Matcher matcher = additionalCPUInfoRE.matcher(cpuFeaturesString); if (matcher.find()) { additionalCPUInfo = matcher.group(1); } else { additionalCPUInfo = ""; } String splittedFeatures[] = matcher.replaceAll("").split("(, )| "); features = Collections.unmodifiableList(Arrays. asList(splittedFeatures)); } /** * Get additional information about CPU. * For example, on X86 in will be family/model/stepping * and number of cores. * * @return additional CPU info */ public static String getAdditionalCPUInfo() { return additionalCPUInfo; } /** * Get all known features supported by CPU. * * @return unmodifiable list with names of all known features * supported by CPU. */ public static List<String> getFeatures() { return features; } /** * Check if some feature is supported by CPU. * * @param feature Name of feature to be tested. * @return <b>true</b> if tested feature is supported by CPU. */ public static boolean hasFeature(String feature) { return features.contains(feature.toLowerCase()); } }