1 /* 2 * Copyright (c) 2018, 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 /* 25 * @test 26 * @bug 8174994 27 * @summary Test the clhsdb commands 'printmdo', 'printall' on a CDS enabled corefile. 28 * @requires vm.cds 29 * @requires os.family != "windows" 30 * @requires vm.flavor == "server" 31 * @library /test/lib 32 * @modules java.base/jdk.internal.misc 33 * @run main/othervm/timeout=2400 -Xmx1g ClhsdbCDSCore 34 */ 35 36 import java.util.List; 37 import java.util.ArrayList; 38 import java.util.Arrays; 39 import java.util.Map; 40 import java.util.HashMap; 41 import jdk.test.lib.process.ProcessTools; 42 import jdk.test.lib.Platform; 43 import jdk.test.lib.process.OutputAnalyzer; 44 import jdk.test.lib.cds.CDSTestUtils; 45 import jdk.test.lib.cds.CDSOptions; 46 import java.io.IOException; 47 import java.io.File; 48 import java.nio.file.Files; 49 import java.nio.file.Path; 50 import java.nio.file.Paths; 51 import jdk.test.lib.Asserts; 52 import java.util.regex.Pattern; 53 import java.util.regex.Matcher; 54 import jdk.internal.misc.Unsafe; 55 import java.util.Scanner; 56 57 class CrashApp { 58 public static void main(String[] args) { 59 Unsafe.getUnsafe().putInt(0L, 0); 60 } 61 } 62 63 public class ClhsdbCDSCore { 64 65 private static final String TEST_CDS_CORE_FILE_NAME = "cds_core_file"; 66 private static final String LOCATIONS_STRING = "location: "; 67 private static final String RUN_SHELL_NO_LIMIT = "ulimit -c unlimited && "; 68 private static final String SHARED_ARCHIVE_NAME = "ArchiveForClhsdbCDSCore.jsa"; 69 private static final String CORE_PATTERN_FILE_NAME = "/proc/sys/kernel/core_pattern"; 70 71 public static void main(String[] args) throws Exception { 72 System.out.println("Starting ClhsdbCDSCore test"); 73 cleanup(); 74 75 try { 76 CDSOptions opts = (new CDSOptions()).setArchiveName(SHARED_ARCHIVE_NAME); 77 CDSTestUtils.createArchiveAndCheck(opts); 78 79 String[] jArgs = { 80 "-XX:+UnlockDiagnosticVMOptions", 81 "-XX:SharedArchiveFile=" + SHARED_ARCHIVE_NAME, 82 "-XX:+CreateCoredumpOnCrash", 83 "-Xshare:auto", 84 "-XX:+ProfileInterpreter", 85 "--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED", 86 CrashApp.class.getName() 87 }; 88 89 OutputAnalyzer crashOut; 90 try { 91 List<String> options = new ArrayList<>(); 92 options.addAll(Arrays.asList(jArgs)); 93 crashOut = 94 ProcessTools.executeProcess(getTestJavaCommandlineWithPrefix( 95 RUN_SHELL_NO_LIMIT, options.toArray(new String[0]))); 96 } catch (Throwable t) { 97 throw new Error("Can't execute the java cds process.", t); 98 } 99 100 System.out.println(crashOut.getOutput()); 101 String crashOutputString = crashOut.getOutput(); 102 String coreFileLocation = getCoreFileLocation(crashOutputString); 103 if (coreFileLocation == null) { 104 if (Platform.isOSX()) { 105 File coresDir = new File("/cores"); 106 if (!coresDir.isDirectory() || !coresDir.canWrite()) { 107 throw new Error("cores is not a directory or does not have write permissions"); 108 } 109 } else if (Platform.isLinux()) { 110 // Check if a crash report tool is installed. 111 File corePatternFile = new File(CORE_PATTERN_FILE_NAME); 112 Scanner scanner = new Scanner(corePatternFile); 113 while (scanner.hasNextLine()) { 114 String line = scanner.nextLine(); 115 line = line.trim(); 116 System.out.println(line); 117 if (line.startsWith("|")) { 118 System.out.println( 119 "\nThis system uses a crash report tool ($cat /proc/sys/kernel/core_pattern).\n" + 120 "Core files might not be generated. Please reset /proc/sys/kernel/core_pattern\n" + 121 "to enable core generation. Skipping this test."); 122 cleanup(); 123 return; 124 } 125 } 126 } 127 throw new Error("Couldn't find core file location in: '" + crashOutputString + "'"); 128 } 129 try { 130 Asserts.assertGT(new File(coreFileLocation).length(), 0L, "Unexpected core size"); 131 Files.move(Paths.get(coreFileLocation), Paths.get(TEST_CDS_CORE_FILE_NAME)); 132 } catch (IOException ioe) { 133 throw new Error("Can't move core file: " + ioe, ioe); 134 } 135 136 ClhsdbLauncher test = new ClhsdbLauncher(); 137 138 // Ensure that UseSharedSpaces is turned on. 139 List<String> cmds = List.of("flags UseSharedSpaces"); 140 141 String useSharedSpacesOutput = test.runOnCore(TEST_CDS_CORE_FILE_NAME, cmds, 142 null, null); 143 144 if (useSharedSpacesOutput == null) { 145 // Output could be null due to attach permission issues. 146 System.out.println("Could not determine the UseSharedSpaces value - test skipped."); 147 cleanup(); 148 return; 149 } 150 151 if (!useSharedSpacesOutput.contains("true")) { 152 // CDS archive is not mapped. Skip the rest of the test. 153 System.out.println("The CDS archive is not mapped - test skipped."); 154 cleanup(); 155 return; 156 } 157 158 cmds = List.of("printmdo -a", "printall"); 159 160 Map<String, List<String>> expStrMap = new HashMap<>(); 161 Map<String, List<String>> unExpStrMap = new HashMap<>(); 162 expStrMap.put("printmdo -a", List.of( 163 "CounterData", 164 "BranchData")); 165 unExpStrMap.put("printmdo -a", List.of( 166 "No suitable match for type of address")); 167 expStrMap.put("printall", List.of( 168 "aload_0", 169 "Constant Pool of", 170 "public static void main(java.lang.String[])", 171 "Bytecode", 172 "invokevirtual", 173 "checkcast", 174 "Exception Table", 175 "invokedynamic")); 176 unExpStrMap.put("printall", List.of( 177 "sun.jvm.hotspot.types.WrongTypeException", 178 "No suitable match for type of address")); 179 test.runOnCore(TEST_CDS_CORE_FILE_NAME, cmds, expStrMap, unExpStrMap); 180 } catch (Exception ex) { 181 throw new RuntimeException("Test ERROR " + ex, ex); 182 } 183 cleanup(); 184 System.out.println("Test PASSED"); 185 } 186 187 // lets search for a few possible locations using process output and return existing location 188 private static String getCoreFileLocation(String crashOutputString) { 189 Asserts.assertTrue(crashOutputString.contains(LOCATIONS_STRING), 190 "Output doesn't contain the location of core file."); 191 String stringWithLocation = Arrays.stream(crashOutputString.split("\\r?\\n")) 192 .filter(str -> str.contains(LOCATIONS_STRING)) 193 .findFirst() 194 .get(); 195 stringWithLocation = stringWithLocation.substring(stringWithLocation 196 .indexOf(LOCATIONS_STRING) + LOCATIONS_STRING.length()); 197 String coreWithPid; 198 if (stringWithLocation.contains("or ")) { 199 Matcher m = Pattern.compile("or.* ([^ ]+[^\\)])\\)?").matcher(stringWithLocation); 200 if (!m.find()) { 201 throw new Error("Couldn't find path to core inside location string"); 202 } 203 coreWithPid = m.group(1); 204 } else { 205 coreWithPid = stringWithLocation.trim(); 206 } 207 if (new File(coreWithPid).exists()) { 208 return coreWithPid; 209 } 210 String justCore = Paths.get("core").toString(); 211 if (new File(justCore).exists()) { 212 return justCore; 213 } 214 Path coreWithPidPath = Paths.get(coreWithPid); 215 String justFile = coreWithPidPath.getFileName().toString(); 216 if (new File(justFile).exists()) { 217 return justFile; 218 } 219 Path parent = coreWithPidPath.getParent(); 220 if (parent != null) { 221 String coreWithoutPid = parent.resolve("core").toString(); 222 if (new File(coreWithoutPid).exists()) { 223 return coreWithoutPid; 224 } 225 } 226 return null; 227 } 228 229 private static String[] getTestJavaCommandlineWithPrefix(String prefix, String... args) { 230 try { 231 String cmd = ProcessTools.getCommandLine(ProcessTools.createJavaProcessBuilder(true, args)); 232 return new String[]{"sh", "-c", prefix + cmd}; 233 } catch (Throwable t) { 234 throw new Error("Can't create process builder: " + t, t); 235 } 236 } 237 238 private static void cleanup() { 239 remove(TEST_CDS_CORE_FILE_NAME); 240 remove(SHARED_ARCHIVE_NAME); 241 } 242 243 private static void remove(String item) { 244 File toDelete = new File(item); 245 toDelete.delete(); 246 } 247 }