/* * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @test * @bug 8059510 * @summary Test jcmd VM.symboltable, VM.stringtable and VM.systemdictionary options * @library /test/lib * @modules java.base/jdk.internal.misc * java.management * @run main/othervm -XX:+UnlockDiagnosticVMOptions DumpSymbolAndStringTable */ import jdk.test.lib.cds.CDSTestUtils; import jdk.test.lib.process.ProcessTools; import jdk.test.lib.process.OutputAnalyzer; import jdk.test.lib.JDKToolFinder; public class DumpSymbolAndStringTable { public static void main(String[] args) throws Exception { // Grab my own PID String pid = Long.toString(ProcessTools.getProcessId()); ProcessBuilder pb = new ProcessBuilder(); pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.symboltable", "-verbose"}); OutputAnalyzer output = CDSTestUtils.executeAndLog(pb, "jcmd-symboltable"); try { output.shouldContain("24 2: DumpSymbolAndStringTable\n"); } catch (RuntimeException e) { output.shouldContain("Unknown diagnostic command"); } pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.stringtable", "-verbose"}); output = CDSTestUtils.executeAndLog(pb, "jcmd-stringtable"); try { output.shouldContain("16: java.lang.String\n"); } catch (RuntimeException e) { output.shouldContain("Unknown diagnostic command"); } pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.systemdictionary"}); output = CDSTestUtils.executeAndLog(pb, "jcmd-systemdictionary"); try { output.shouldContain("System Dictionary for 'app' class loader statistics:"); output.shouldContain("Number of buckets"); output.shouldContain("Number of entries"); output.shouldContain("Maximum bucket size"); } catch (RuntimeException e) { output.shouldContain("Unknown diagnostic command"); } pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.systemdictionary", "-verbose"}); output = CDSTestUtils.executeAndLog(pb, "jcmd-systemdictionary"); try { output.shouldContain("Dictionary for loader data: 0x"); output.shouldContain("^java.lang.String"); } catch (RuntimeException e) { output.shouldContain("Unknown diagnostic command"); } } }