1 /* 2 * Copyright (c) 2014, 2015, 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 /testlibrary 27 * @run main LimitSharedSizes 28 */ 29 30 import com.oracle.java.testlibrary.*; 31 32 public class LimitSharedSizes { 33 static enum Region { 34 RO, RW, MD, MC 35 } 36 37 private static class SharedSizeTestData { 38 public String optionName; 39 public String optionValue; 40 public String expectedErrorMsg; 41 42 public SharedSizeTestData(Region region, String value, String msg) { 43 optionName = getName(region); 44 optionValue = value; 45 expectedErrorMsg = msg; 46 } 47 48 public SharedSizeTestData(Region region, String msg) { 49 optionName = getName(region); 50 optionValue = getValue(region); 51 expectedErrorMsg = msg; 52 } 53 54 private String getName(Region region) { 55 String name; 56 switch (region) { 57 case RO: 58 name = "-XX:SharedReadOnlySize"; 59 break; 60 case RW: 61 name = "-XX:SharedReadWriteSize"; 62 break; 63 case MD: 64 name = "-XX:SharedMiscDataSize"; 65 break; 66 case MC: 67 name = "-XX:SharedMiscCodeSize"; 68 break; 69 default: 70 name = "Unknown"; 71 break; 72 } 73 return name; 74 } 75 76 private String getValue(Region region) { 77 String value; 78 switch (region) { 79 case RO: 80 value = Platform.is64bit() ? "9M" : "8M"; 81 break; 82 case RW: 83 value = Platform.is64bit() ? "12M" : "7M"; 84 break; 85 case MD: 86 value = Platform.is64bit() ? "4M" : "2M"; 87 break; 88 case MC: 89 value = "120k"; 90 break; 91 default: 92 value = "0M"; 93 break; 94 } 95 return value; 96 } 97 } 98 99 private static final SharedSizeTestData[] testTable = { 100 // Too small of a region size should not cause a vm crash. 101 // It should result in an error message like the following: 102 // The shared miscellaneous code space is not large enough 103 // to preload requested classes. Use -XX:SharedMiscCodeSize= 104 // to increase the initial size of shared miscellaneous code space. 105 new SharedSizeTestData(Region.RO, "4M", "read only"), 106 new SharedSizeTestData(Region.RW, "4M", "read write"), 107 new SharedSizeTestData(Region.MD, "50k", "miscellaneous data"), 108 new SharedSizeTestData(Region.MC, "20k", "miscellaneous code"), 109 110 // these values are larger than default ones, but should 111 // be acceptable and not cause failure 112 new SharedSizeTestData(Region.RO, "20M", null), 113 new SharedSizeTestData(Region.RW, "20M", null), 114 new SharedSizeTestData(Region.MD, "20M", null), 115 new SharedSizeTestData(Region.MC, "20M", null), 116 117 // test with sizes which just meet the minimum required sizes 118 // the following tests also attempt to use the shared archive 119 new SharedSizeTestData(Region.RO, "UseArchive"), 120 new SharedSizeTestData(Region.RW, "UseArchive"), 121 new SharedSizeTestData(Region.MD, "UseArchive"), 122 new SharedSizeTestData(Region.MC, "UseArchive") 123 }; 124 125 public static void main(String[] args) throws Exception { 126 int counter = 0; 127 for (SharedSizeTestData td : testTable) { 128 String fileName = "LimitSharedSizes" + counter + ".jsa"; 129 counter++; 130 131 String option = td.optionName + "=" + td.optionValue; 132 System.out.println("testing option <" + option + ">"); 133 134 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 135 "-XX:+UnlockDiagnosticVMOptions", 136 "-XX:SharedArchiveFile=./" + fileName, 137 option, 138 "-Xshare:dump"); 139 140 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 141 142 if (td.expectedErrorMsg != null) { 143 if (!td.expectedErrorMsg.equals("UseArchive")) { 144 output.shouldContain("The shared " + td.expectedErrorMsg 145 + " space is not large enough"); 146 147 output.shouldHaveExitValue(2); 148 } else { 149 output.shouldNotContain("space is not large enough"); 150 output.shouldHaveExitValue(0); 151 152 // try to use the archive 153 pb = ProcessTools.createJavaProcessBuilder( 154 "-XX:+UnlockDiagnosticVMOptions", 155 "-XX:SharedArchiveFile=./" + fileName, 156 "-XX:+PrintSharedArchiveAndExit", 157 "-version"); 158 159 try { 160 output = new OutputAnalyzer(pb.start()); 161 output.shouldContain("archive is valid"); 162 } catch (RuntimeException e) { 163 // if sharing failed due to ASLR or similar reasons, 164 // check whether sharing was attempted at all (UseSharedSpaces) 165 if ((output.getOutput().contains("Unable to use shared archive") || 166 output.getOutput().contains("Unable to map ReadOnly shared space at required address.") || 167 output.getOutput().contains("Unable to map ReadWrite shared space at required address.") || 168 output.getOutput().contains("Unable to reserve shared space at required address")) && 169 output.getExitValue() == 1) { 170 System.out.println("Unable to use shared archive: test not executed; assumed passed"); 171 return; 172 } 173 } 174 output.shouldHaveExitValue(0); 175 } 176 } else { 177 output.shouldNotContain("space is not large enough"); 178 output.shouldHaveExitValue(0); 179 } 180 } 181 } 182 }