137 lines
4.3 KiB
Java
137 lines
4.3 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package requires;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Paths;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.concurrent.Callable;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* The Class to be invoked by jtreg prior Test Suite execution to
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* collect information about VM.
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* Properties set by this Class will be available in the @requires expressions.
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*/
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public class VMProps implements Callable<Map<String, String>> {
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/**
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* Collects information about VM properties.
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* This method will be invoked by jtreg.
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*
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* @return Map of property-value pairs.
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*/
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@Override
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public Map<String, String> call() {
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Map<String, String> map = new HashMap<>();
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map.put("vm.flavor", vmFlavor());
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map.put("vm.compMode", vmCompMode());
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map.put("vm.bits", vmBits());
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dump(map);
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return map;
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}
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/**
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* @return VM type value extracted from the "java.vm.name" property.
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*/
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protected String vmFlavor() {
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// E.g. "Java HotSpot(TM) 64-Bit Server VM"
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String vmName = System.getProperty("java.vm.name");
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if (vmName == null) {
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return null;
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}
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Pattern startP = Pattern.compile(".* (\\S+) VM");
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Matcher m = startP.matcher(vmName);
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if (m.matches()) {
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return m.group(1).toLowerCase();
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}
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return null;
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}
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/**
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* @return VM compilation mode extracted from the "java.vm.info" property.
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*/
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protected String vmCompMode() {
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// E.g. "mixed mode"
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String vmInfo = System.getProperty("java.vm.info");
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if (vmInfo == null) {
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return null;
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}
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int k = vmInfo.toLowerCase().indexOf(" mode");
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if (k < 0) {
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return null;
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}
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vmInfo = vmInfo.substring(0, k);
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switch (vmInfo) {
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case "mixed" : return "Xmixed";
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case "compiled" : return "Xcomp";
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case "interpreted" : return "Xint";
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default: return null;
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}
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}
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/**
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* @return VM bitness, the value of the "sun.arch.data.model" property.
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*/
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protected String vmBits() {
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return System.getProperty("sun.arch.data.model");
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}
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/**
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* Dumps the map to the file if the file name is given as the property.
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* This functionality could be helpful to know context in the real
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* execution.
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*
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* @param map
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*/
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protected void dump(Map<String, String> map) {
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String dumpFileName = System.getProperty("vmprops.dump");
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if (dumpFileName == null) {
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return;
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}
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List<String> lines = new ArrayList<>();
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map.forEach((k,v) -> lines.add(k + ":" + v));
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try {
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Files.write(Paths.get(dumpFileName), lines);
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} catch (IOException e) {
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throw new RuntimeException("Failed to dump properties into '"
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+ dumpFileName + "'", e);
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}
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}
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/**
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* This method is for the testing purpose only.
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* @param args
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*/
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public static void main(String args[]) {
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Map<String, String> map = new VMProps().call();
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map.forEach((k,v) -> System.out.println(k + ": '" + v + "'"));
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}
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}
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