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 TestHeapDumpOnOutOfMemoryError 26 * @summary Test verifies that -XX:HeapDumpOnOutOfMemoryError dump heap when OutOfMemory is thrown 27 * @modules java.base/jdk.internal.misc 28 * @library /test/lib 29 * @run driver/timeout=240 TestHeapDumpOnOutOfMemoryError 30 */ 31 32 import jdk.test.lib.Asserts; 33 import jdk.test.lib.classloader.GeneratingClassLoader; 34 import jdk.test.lib.hprof.HprofParser; 35 import jdk.test.lib.process.ProcessTools; 36 import jdk.test.lib.process.OutputAnalyzer; 37 38 import java.io.File; 39 40 public class TestHeapDumpOnOutOfMemoryError { 41 42 public static String HEAP_OOME = "heap"; 43 public static String METASPACE_OOME = "metaspace"; 44 45 public static void main(String[] args) throws Exception { 46 if (args.length == 1) { 47 try { 48 if (args[0].equals(HEAP_OOME)) { 49 Object[] oa = new Object[Integer.MAX_VALUE]; 50 for(int i = 0; i < oa.length; i++) { 51 oa[i] = new Object[Integer.MAX_VALUE]; 52 } 53 } else { 54 GeneratingClassLoader loader = new GeneratingClassLoader(); 55 for (int i = 0; ; i++) { 56 loader.loadClass(loader.getClassName(i)); 57 } 58 } 59 throw new Error("OOME not triggered"); 60 } catch (OutOfMemoryError err) { 61 return; 62 } 63 } 64 test(HEAP_OOME); 65 test(METASPACE_OOME); 66 testHeapDumpPath(); 67 } 68 69 static void test(String type) throws Exception { 70 String heapdumpFilename = type + ".hprof"; 71 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+HeapDumpOnOutOfMemoryError", 72 "-XX:HeapDumpPath=" + heapdumpFilename, "-XX:MaxMetaspaceSize=64m", 73 TestHeapDumpOnOutOfMemoryError.class.getName(), type); 74 75 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 76 output.stdoutShouldNotBeEmpty(); 77 output.shouldContain("Dumping heap to " + type + ".hprof"); 78 File dump = new File(heapdumpFilename); 79 Asserts.assertTrue(dump.exists() && dump.isFile(), 80 "Could not find dump file " + dump.getAbsolutePath()); 81 82 HprofParser.parse(new File(heapdumpFilename)); 83 System.out.println("PASSED"); 84 } 85 86 static void testHeapDumpPath() throws Exception { 87 String heapdumpPath = "dumps"; 88 File dumpDirectory = new File(heapdumpPath); 89 dumpDirectory.mkdir(); 90 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+HeapDumpOnOutOfMemoryError", 91 "-XX:HeapDumpPath=" + heapdumpPath, "-Xmx256m", "-XX:MaxMetaspaceSize=64m", 92 TestHeapDumpOnOutOfMemoryError.class.getName(), HEAP_OOME); 93 94 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 95 output.stdoutShouldNotBeEmpty(); 96 output.shouldContain("Dumping heap"); 97 98 Asserts.assertFalse(dumpDirectory.listFiles().length == 0, 99 "There is no dump files found in " + dumpDirectory ); 100 101 Asserts.assertTrue(dumpDirectory.listFiles().length == 1, 102 "There are unexpected files in " + dumpDirectory 103 + ": " + String.join(",", dumpDirectory.list()) +"."); 104 105 File dump = dumpDirectory.listFiles()[0]; 106 Asserts.assertTrue(dump.exists() && dump.isFile(), 107 "Could not find dump file " + dump.getAbsolutePath()); 108 109 HprofParser.parse(dump); 110 System.out.println("PASSED"); 111 } 112 113 }