1 /* 2 * Copyright (c) 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 import org.testng.annotations.Test; 25 26 import java.io.IOException; 27 28 import com.oracle.java.testlibrary.JDKToolFinder; 29 import com.oracle.java.testlibrary.OutputAnalyzer; 30 import com.oracle.java.testlibrary.dcmd.CommandExecutor; 31 import com.oracle.java.testlibrary.dcmd.PidJcmdExecutor; 32 33 /* 34 * @test 35 * @library /testlibrary 36 * @build com.oracle.java.testlibrary.* 37 * @build com.oracle.java.testlibrary.dcmd.* 38 * @run testng HeapDumpTest 39 */ 40 public class HeapDumpTest { 41 protected String heapDumpArgs = ""; 42 43 public void run(CommandExecutor executor) { 44 String fileName = "jcmd.gc.heap_dump." + System.currentTimeMillis() + ".hprof"; 45 String cmd = "GC.heap_dump " + heapDumpArgs + " " + fileName; 46 executor.execute(cmd); 47 48 verifyHeapDump(fileName); 49 } 50 51 private void verifyHeapDump(String fileName) { 52 String jhat = JDKToolFinder.getTestJDKTool("jhat"); 53 String[] cmd = { jhat, "-parseonly", "true", fileName }; 54 55 ProcessBuilder pb = new ProcessBuilder(cmd); 56 pb.redirectErrorStream(true); 57 Process p = null; 58 OutputAnalyzer output; 59 60 try { 61 p = pb.start(); 62 output = new OutputAnalyzer(p); 63 64 /* 65 * Some hprof dumps of all objects contain constantPoolOop references that cannot be resolved, so we ignore 66 * failures about resolving constantPoolOop fields using a negative lookahead 67 */ 68 output.shouldNotMatch(".*WARNING(?!.*Failed to resolve object.*constantPoolOop.*).*"); 69 } catch (IOException e) { 70 throw new RuntimeException("Test error: Caught exception while reading stdout/err of jhat", e); 71 } finally { 72 if (p != null) { 73 p.destroy(); 74 } 75 } 76 77 if (output.getExitValue() != 0) { 78 throw new RuntimeException("Test error: jhat exit code was nonzero"); 79 } 80 } 81 82 /* GC.heap_dump is not available over JMX, running jcmd pid executor instead */ 83 @Test 84 public void pid() { 85 run(new PidJcmdExecutor()); 86 } 87 } 88