| /* |
| * Copyright (c) 2016, 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 requires; |
| |
| import java.io.IOException; |
| import java.lang.management.ManagementFactory; |
| import java.lang.management.RuntimeMXBean; |
| import java.nio.file.Files; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.Callable; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| import sun.hotspot.gc.GC; |
| |
| /** |
| * The Class to be invoked by jtreg prior Test Suite execution to |
| * collect information about VM. |
| * Properties set by this Class will be available in the @requires expressions. |
| */ |
| public class VMProps implements Callable<Map<String, String>> { |
| |
| /** |
| * Collects information about VM properties. |
| * This method will be invoked by jtreg. |
| * |
| * @return Map of property-value pairs. |
| */ |
| @Override |
| public Map<String, String> call() { |
| Map<String, String> map = new HashMap<>(); |
| map.put("vm.flavor", vmFlavor()); |
| map.put("vm.compMode", vmCompMode()); |
| map.put("vm.bits", vmBits()); |
| map.put("vm.flightRecorder", vmFlightRecorder()); |
| map.put("vm.simpleArch", vmArch()); |
| vmGC(map); // vm.gc.X = true/false |
| |
| dump(map); |
| return map; |
| } |
| |
| /** |
| * @return vm.simpleArch value of "os.simpleArch" property of tested JDK. |
| */ |
| protected String vmArch() { |
| String arch = System.getProperty("os.arch"); |
| if (arch.equals("x86_64") || arch.equals("amd64")) { |
| return "x64"; |
| } |
| else if (arch.contains("86")) { |
| return "x86"; |
| } else { |
| return arch; |
| } |
| } |
| |
| |
| |
| /** |
| * @return VM type value extracted from the "java.vm.name" property. |
| */ |
| protected String vmFlavor() { |
| // E.g. "Java HotSpot(TM) 64-Bit Server VM" |
| String vmName = System.getProperty("java.vm.name"); |
| if (vmName == null) { |
| return null; |
| } |
| |
| Pattern startP = Pattern.compile(".* (\\S+) VM"); |
| Matcher m = startP.matcher(vmName); |
| if (m.matches()) { |
| return m.group(1).toLowerCase(); |
| } |
| return null; |
| } |
| |
| /** |
| * @return VM compilation mode extracted from the "java.vm.info" property. |
| */ |
| protected String vmCompMode() { |
| // E.g. "mixed mode" |
| String vmInfo = System.getProperty("java.vm.info"); |
| if (vmInfo == null) { |
| return null; |
| } |
| int k = vmInfo.toLowerCase().indexOf(" mode"); |
| if (k < 0) { |
| return null; |
| } |
| vmInfo = vmInfo.substring(0, k); |
| switch (vmInfo) { |
| case "mixed" : return "Xmixed"; |
| case "compiled" : return "Xcomp"; |
| case "interpreted" : return "Xint"; |
| default: return null; |
| } |
| } |
| |
| /** |
| * @return VM bitness, the value of the "sun.arch.data.model" property. |
| */ |
| protected String vmBits() { |
| return System.getProperty("sun.arch.data.model"); |
| } |
| |
| /** |
| * @return "true" if Flight Recorder is enabled, "false" if is disabled. |
| */ |
| protected String vmFlightRecorder() { |
| RuntimeMXBean runtimeMxBean = ManagementFactory.getRuntimeMXBean(); |
| List<String> arguments = runtimeMxBean.getInputArguments(); |
| if (arguments.contains("-XX:+UnlockCommercialFeatures")) { |
| if (arguments.contains("-XX:+FlightRecorder")) { |
| return "true"; |
| } |
| if (arguments.contains("-XX:-FlightRecorder")) { |
| return "false"; |
| } |
| if (arguments.stream() |
| .anyMatch(option -> option.startsWith("-XX:StartFlightRecording"))) { |
| return "true"; |
| } |
| } |
| return "false"; |
| } |
| |
| /** |
| * For all existing GC sets vm.gc.X property. |
| * Example vm.gc.G1=true means: |
| * VM supports G1 |
| * User either set G1 explicitely (-XX:+UseG1GC) or did not set any GC |
| * @param map - property-value pairs |
| */ |
| protected void vmGC(Map<String, String> map){ |
| GC currentGC = GC.current(); |
| boolean isByErgo = GC.currentSetByErgo(); |
| List<GC> supportedGC = GC.allSupported(); |
| for (GC gc: GC.values()) { |
| boolean isSupported = supportedGC.contains(gc); |
| boolean isAcceptable = isSupported && (gc == currentGC || isByErgo); |
| map.put("vm.gc." + gc.name(), "" + isAcceptable); |
| } |
| } |
| |
| /** |
| * Dumps the map to the file if the file name is given as the property. |
| * This functionality could be helpful to know context in the real |
| * execution. |
| * |
| * @param map |
| */ |
| protected void dump(Map<String, String> map) { |
| String dumpFileName = System.getProperty("vmprops.dump"); |
| if (dumpFileName == null) { |
| return; |
| } |
| List<String> lines = new ArrayList<>(); |
| map.forEach((k, v) -> lines.add(k + ":" + v)); |
| try { |
| Files.write(Paths.get(dumpFileName), lines); |
| } catch (IOException e) { |
| throw new RuntimeException("Failed to dump properties into '" |
| + dumpFileName + "'", e); |
| } |
| } |
| |
| /** |
| * This method is for the testing purpose only. |
| * @param args |
| */ |
| public static void main(String args[]) { |
| Map<String, String> map = new VMProps().call(); |
| map.forEach((k, v) -> System.out.println(k + ": '" + v + "'")); |
| } |
| } |