1 /* 2 * Copyright (c) 2014, 2019, 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 8059510 27 * @summary Test jcmd VM.symboltable, VM.stringtable and VM.systemdictionary options 28 * @library /test/lib 29 * @run main/othervm -XX:+UnlockDiagnosticVMOptions DumpSymbolAndStringTable 30 */ 31 import jdk.test.lib.cds.CDSTestUtils; 32 import jdk.test.lib.process.ProcessTools; 33 import jdk.test.lib.process.OutputAnalyzer; 34 import jdk.test.lib.JDKToolFinder; 35 36 public class DumpSymbolAndStringTable { 37 private static final String my_string = "DumpSymbolAndStringTable"; 38 public static void main(String[] args) throws Exception { 39 // Grab my own PID 40 String pid = Long.toString(ProcessTools.getProcessId()); 41 42 ProcessBuilder pb = new ProcessBuilder(); 43 pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.symboltable", "-verbose"}); 44 OutputAnalyzer output = CDSTestUtils.executeAndLog(pb, "jcmd-symboltable"); 45 try { 46 output.shouldContain("24 2: DumpSymbolAndStringTable\n"); 47 } catch (RuntimeException e) { 48 output.shouldContain("Unknown diagnostic command"); 49 } 50 51 pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.stringtable", "-verbose"}); 52 output = CDSTestUtils.executeAndLog(pb, "jcmd-stringtable"); 53 try { 54 output.shouldContain("24: DumpSymbolAndStringTable"); 55 } catch (RuntimeException e) { 56 output.shouldContain("Unknown diagnostic command"); 57 } 58 59 pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.systemdictionary"}); 60 output = CDSTestUtils.executeAndLog(pb, "jcmd-systemdictionary"); 61 try { 62 output.shouldContain("System Dictionary for 'app' class loader statistics:"); 63 output.shouldContain("Number of buckets"); 64 output.shouldContain("Number of entries"); 65 output.shouldContain("Maximum bucket size"); 66 } catch (RuntimeException e) { 67 output.shouldContain("Unknown diagnostic command"); 68 } 69 70 pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.systemdictionary", "-verbose"}); 71 output = CDSTestUtils.executeAndLog(pb, "jcmd-systemdictionary"); 72 try { 73 output.shouldContain("Dictionary for loader data: 0x"); 74 output.shouldContain("^java.lang.String"); 75 } catch (RuntimeException e) { 76 output.shouldContain("Unknown diagnostic command"); 77 } 78 } 79 }