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 import org.testng.Assert; 26 27 import java.io.IOException; 28 29 import com.oracle.java.testlibrary.JDKToolFinder; 30 import com.oracle.java.testlibrary.OutputAnalyzer; 31 import com.oracle.java.testlibrary.dcmd.CommandExecutor; 32 import com.oracle.java.testlibrary.dcmd.PidJcmdExecutor; 33 34 /* 35 * @test 36 * @summary Test of diagnostic command GC.heap_dump 37 * @library /testlibrary 38 * @modules java.base/sun.misc 39 * java.compiler 40 * java.management 41 * jdk.jvmstat/sun.jvmstat.monitor 42 * @build com.oracle.java.testlibrary.* 43 * @build com.oracle.java.testlibrary.dcmd.* 44 * @run testng HeapDumpTest 45 */ 46 public class HeapDumpTest { 47 protected String heapDumpArgs = ""; 48 49 public void run(CommandExecutor executor) { 50 String fileName = "jcmd.gc.heap_dump." + System.currentTimeMillis() + ".hprof"; 51 String cmd = "GC.heap_dump " + heapDumpArgs + " " + fileName; 52 executor.execute(cmd); 53 54 verifyHeapDump(fileName); 55 } 56 57 private void verifyHeapDump(String fileName) { 58 String jhat = JDKToolFinder.getJDKTool("jhat"); 59 String[] cmd = { jhat, "-parseonly", "true", fileName }; 60 61 ProcessBuilder pb = new ProcessBuilder(cmd); 62 pb.redirectErrorStream(true); 63 Process p = null; 64 OutputAnalyzer output = null; 65 66 try { 67 p = pb.start(); 68 output = new OutputAnalyzer(p); 69 70 /* 71 * Some hprof dumps of all objects contain constantPoolOop references that cannot be resolved, so we ignore 72 * failures about resolving constantPoolOop fields using a negative lookahead 73 */ 74 output.shouldNotMatch(".*WARNING(?!.*Failed to resolve object.*constantPoolOop.*).*"); 75 } catch (IOException e) { 76 Assert.fail("Test error: Caught exception while reading stdout/err of jhat", e); 77 } finally { 78 if (p != null) { 79 p.destroy(); 80 } 81 } 82 83 if (output.getExitValue() != 0) { 84 Assert.fail("Test error: jhat exit code was nonzero"); 85 } 86 } 87 88 /* GC.heap_dump is not available over JMX, running jcmd pid executor instead */ 89 @Test 90 public void pid() { 91 run(new PidJcmdExecutor()); 92 } 93 } 94