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| 1 | +/* |
| 2 | + * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | + * |
| 5 | + * This code is free software; you can redistribute it and/or modify it |
| 6 | + * under the terms of the GNU General Public License version 2 only, as |
| 7 | + * published by the Free Software Foundation. |
| 8 | + * |
| 9 | + * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | + * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | + * accompanied this code). |
| 14 | + * |
| 15 | + * You should have received a copy of the GNU General Public License version |
| 16 | + * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | + * |
| 19 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 | + * or visit www.oracle.com if you need additional information or have any |
| 21 | + * questions. |
| 22 | + */ |
| 23 | +package requires; |
| 24 | + |
| 25 | +import java.io.IOException; |
| 26 | +import java.nio.file.Files; |
| 27 | +import java.nio.file.Paths; |
| 28 | +import java.util.ArrayList; |
| 29 | +import java.util.HashMap; |
| 30 | +import java.util.List; |
| 31 | +import java.util.Map; |
| 32 | +import java.util.concurrent.Callable; |
| 33 | +import java.util.regex.Matcher; |
| 34 | +import java.util.regex.Pattern; |
| 35 | + |
| 36 | +/** |
| 37 | + * The Class to be invoked by jtreg prior Test Suite execution to |
| 38 | + * collect information about VM. |
| 39 | + * Properties set by this Class will be available in the @requires expressions. |
| 40 | + */ |
| 41 | +public class VMProps implements Callable<Map<String, String>> { |
| 42 | + |
| 43 | + /** |
| 44 | + * Collects information about VM properties. |
| 45 | + * This method will be invoked by jtreg. |
| 46 | + * |
| 47 | + * @return Map of property-value pairs. |
| 48 | + */ |
| 49 | + @Override |
| 50 | + public Map<String, String> call() { |
| 51 | + Map<String, String> map = new HashMap<>(); |
| 52 | + map.put("vm.flavor", vmFlavor()); |
| 53 | + map.put("vm.compMode", vmCompMode()); |
| 54 | + map.put("vm.bits", vmBits()); |
| 55 | + dump(map); |
| 56 | + return map; |
| 57 | + } |
| 58 | + |
| 59 | + /** |
| 60 | + * @return VM type value extracted from the "java.vm.name" property. |
| 61 | + */ |
| 62 | + protected String vmFlavor() { |
| 63 | + // E.g. "Java HotSpot(TM) 64-Bit Server VM" |
| 64 | + String vmName = System.getProperty("java.vm.name"); |
| 65 | + if (vmName == null) { |
| 66 | + return null; |
| 67 | + } |
| 68 | + |
| 69 | + Pattern startP = Pattern.compile(".* (\\S+) VM"); |
| 70 | + Matcher m = startP.matcher(vmName); |
| 71 | + if (m.matches()) { |
| 72 | + return m.group(1).toLowerCase(); |
| 73 | + } |
| 74 | + return null; |
| 75 | + } |
| 76 | + |
| 77 | + /** |
| 78 | + * @return VM compilation mode extracted from the "java.vm.info" property. |
| 79 | + */ |
| 80 | + protected String vmCompMode() { |
| 81 | + // E.g. "mixed mode" |
| 82 | + String vmInfo = System.getProperty("java.vm.info"); |
| 83 | + if (vmInfo == null) { |
| 84 | + return null; |
| 85 | + } |
| 86 | + int k = vmInfo.toLowerCase().indexOf(" mode"); |
| 87 | + if (k < 0) { |
| 88 | + return null; |
| 89 | + } |
| 90 | + vmInfo = vmInfo.substring(0, k); |
| 91 | + switch (vmInfo) { |
| 92 | + case "mixed" : return "Xmixed"; |
| 93 | + case "compiled" : return "Xcomp"; |
| 94 | + case "interpreted" : return "Xint"; |
| 95 | + default: return null; |
| 96 | + } |
| 97 | + } |
| 98 | + |
| 99 | + /** |
| 100 | + * @return VM bitness, the value of the "sun.arch.data.model" property. |
| 101 | + */ |
| 102 | + protected String vmBits() { |
| 103 | + return System.getProperty("sun.arch.data.model"); |
| 104 | + } |
| 105 | + |
| 106 | + /** |
| 107 | + * Dumps the map to the file if the file name is given as the property. |
| 108 | + * This functionality could be helpful to know context in the real |
| 109 | + * execution. |
| 110 | + * |
| 111 | + * @param map |
| 112 | + */ |
| 113 | + protected void dump(Map<String, String> map) { |
| 114 | + String dumpFileName = System.getProperty("vmprops.dump"); |
| 115 | + if (dumpFileName == null) { |
| 116 | + return; |
| 117 | + } |
| 118 | + List<String> lines = new ArrayList<>(); |
| 119 | + map.forEach((k,v) -> lines.add(k + ":" + v)); |
| 120 | + try { |
| 121 | + Files.write(Paths.get(dumpFileName), lines); |
| 122 | + } catch (IOException e) { |
| 123 | + throw new RuntimeException("Failed to dump properties into '" |
| 124 | + + dumpFileName + "'", e); |
| 125 | + } |
| 126 | + } |
| 127 | + |
| 128 | + /** |
| 129 | + * This method is for the testing purpose only. |
| 130 | + * @param args |
| 131 | + */ |
| 132 | + public static void main(String args[]) { |
| 133 | + Map<String, String> map = new VMProps().call(); |
| 134 | + map.forEach((k,v) -> System.out.println(k + ": '" + v + "'")); |
| 135 | + } |
| 136 | +} |
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