1/* 2 * Copyright (c) 2014, 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 24/* @test LimitSharedSizes 25 * @summary Test handling of limits on shared space size 26 * @library /test/lib /runtime/CommandLine/OptionsValidation/common 27 * @modules java.base/jdk.internal.misc 28 * java.management 29 * jdk.attach/sun.tools.attach 30 * @run main LimitSharedSizes 31 */ 32 33import jdk.test.lib.process.ProcessTools; 34import jdk.test.lib.process.OutputAnalyzer; 35import jdk.test.lib.Platform; 36import optionsvalidation.JVMOptionsUtils; 37 38public class LimitSharedSizes { 39 static enum Result { 40 OUT_OF_RANGE, 41 TOO_SMALL, 42 VALID, 43 VALID_ARCHIVE 44 } 45 46 static enum Region { 47 RO, RW, MD, MC 48 } 49 50 private static final boolean fitsRange(String name, String value) throws RuntimeException { 51 boolean fits = true; 52 try { 53 fits = JVMOptionsUtils.fitsRange(name, value); 54 } catch (Exception e) { 55 throw new RuntimeException(e.getMessage()); 56 } 57 return fits; 58 } 59 60 private static class SharedSizeTestData { 61 public String optionName; 62 public String optionValue; 63 public Result optionResult; 64 65 public SharedSizeTestData(Region region, String value) { 66 optionName = "-XX:"+getName(region); 67 optionValue = value; 68 if (fitsRange(getName(region), value) == false) { 69 optionResult = Result.OUT_OF_RANGE; 70 } else { 71 optionResult = Result.TOO_SMALL; 72 } 73 } 74 75 public SharedSizeTestData(Region region, String value, Result result) { 76 optionName = "-XX:"+getName(region); 77 optionValue = value; 78 optionResult = result; 79 } 80 81 private String getName(Region region) { 82 String name; 83 switch (region) { 84 case RO: 85 name = "SharedReadOnlySize"; 86 break; 87 case RW: 88 name = "SharedReadWriteSize"; 89 break; 90 case MD: 91 name = "SharedMiscDataSize"; 92 break; 93 case MC: 94 name = "SharedMiscCodeSize"; 95 break; 96 default: 97 name = "Unknown"; 98 break; 99 } 100 return name; 101 } 102 103 public Result getResult() { 104 return optionResult; 105 } 106 } 107 108 private static final SharedSizeTestData[] testTable = { 109 // Too small of a region size should not cause a vm crash. 110 // It should result in an error message either like the following #1: 111 // The shared miscellaneous code space is not large enough 112 // to preload requested classes. Use -XX:SharedMiscCodeSize= 113 // to increase the initial size of shared miscellaneous code space. 114 // or #2: 115 // The shared miscellaneous code space is outside the allowed range 116 new SharedSizeTestData(Region.RO, "4M"), 117 new SharedSizeTestData(Region.RW, "4M"), 118 new SharedSizeTestData(Region.MD, "50k"), 119 new SharedSizeTestData(Region.MC, "20k"), 120 121 // these values are larger than default ones, and should 122 // be acceptable and not cause failure 123 new SharedSizeTestData(Region.RO, "20M", Result.VALID), 124 new SharedSizeTestData(Region.RW, "20M", Result.VALID), 125 new SharedSizeTestData(Region.MD, "20M", Result.VALID), 126 new SharedSizeTestData(Region.MC, "20M", Result.VALID), 127 128 // test with sizes which just meet the minimum required sizes 129 // the following tests also attempt to use the shared archive 130 new SharedSizeTestData(Region.RO, Platform.is64bit() ? "10M":"9M", Result.VALID_ARCHIVE), 131 new SharedSizeTestData(Region.RW, Platform.is64bit() ? "12M":"7M", Result.VALID_ARCHIVE), 132 new SharedSizeTestData(Region.MD, Platform.is64bit() ? "4M":"2M", Result.VALID_ARCHIVE), 133 new SharedSizeTestData(Region.MC, "120k", Result.VALID_ARCHIVE), 134 }; 135 136 public static void main(String[] args) throws Exception { 137 int counter = 0; 138 for (SharedSizeTestData td : testTable) { 139 String fileName = "LimitSharedSizes" + counter + ".jsa"; 140 counter++; 141 142 String option = td.optionName + "=" + td.optionValue; 143 System.out.println("testing option number <" + counter + ">"); 144 System.out.println("testing option <" + option + ">"); 145 146 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 147 "-XX:+UnlockDiagnosticVMOptions", 148 "-XX:SharedArchiveFile=./" + fileName, 149 option, 150 "-Xshare:dump"); 151 152 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 153 154 switch (td.getResult()) { 155 case VALID: 156 case VALID_ARCHIVE: 157 { 158 output.shouldNotContain("space is not large enough"); 159 output.shouldHaveExitValue(0); 160 161 if (td.getResult() == Result.VALID_ARCHIVE) { 162 // try to use the archive 163 pb = ProcessTools.createJavaProcessBuilder( 164 "-XX:+UnlockDiagnosticVMOptions", 165 "-XX:SharedArchiveFile=./" + fileName, 166 "-XX:+PrintSharedArchiveAndExit", 167 "-version"); 168 169 try { 170 output = new OutputAnalyzer(pb.start()); 171 output.shouldContain("archive is valid"); 172 } catch (RuntimeException e) { 173 // if sharing failed due to ASLR or similar reasons, 174 // check whether sharing was attempted at all (UseSharedSpaces) 175 if ((output.getOutput().contains("Unable to use shared archive") || 176 output.getOutput().contains("Unable to map ReadOnly shared space at required address.") || 177 output.getOutput().contains("Unable to map ReadWrite shared space at required address.") || 178 output.getOutput().contains("Unable to reserve shared space at required address")) && 179 output.getExitValue() == 1) { 180 System.out.println("Unable to use shared archive: test not executed; assumed passed"); 181 continue; 182 } 183 } 184 output.shouldHaveExitValue(0); 185 } 186 } 187 break; 188 case TOO_SMALL: 189 { 190 output.shouldContain("space is not large enough"); 191 output.shouldHaveExitValue(2); 192 } 193 break; 194 case OUT_OF_RANGE: 195 { 196 output.shouldContain("outside the allowed range"); 197 output.shouldHaveExitValue(1); 198 } 199 break; 200 } 201 } 202 } 203} 204