/*
* Copyright ( c ) 2014 , 2021 , 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 jdk.test.whitebox.cpuinfo;
import java.util.List;
import java.util.Arrays;
import java.util.Collections;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
import jdk.test.whitebox.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 be explicitly
* 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());
}
}
Messung V0.5 in Prozent C=86 H=91 G=88
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-06-10)
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