98 lines
4.3 KiB
Java
98 lines
4.3 KiB
Java
/*
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* Copyright (c) 2014, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8059510 8213445
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* @summary Test jcmd VM.symboltable, VM.stringtable and VM.systemdictionary options
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* @library /test/lib
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
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* -XX:+WhiteBoxAPI DumpSymbolAndStringTable
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*/
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import jdk.test.lib.cds.CDSTestUtils;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.JDKToolFinder;
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import jdk.test.whitebox.WhiteBox;
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public class DumpSymbolAndStringTable {
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public static void main(String[] args) throws Exception {
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// Grab my own PID
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String pid = Long.toString(ProcessTools.getProcessId());
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WhiteBox wb = WhiteBox.getWhiteBox();
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boolean sharingEnabled = wb.isSharingEnabled();
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ProcessBuilder pb = new ProcessBuilder();
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pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.symboltable", "-verbose"});
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OutputAnalyzer output = CDSTestUtils.executeAndLog(pb, "jcmd-symboltable");
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final String sharedSymbolsHeader = "Shared symbols:\n";
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try {
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output.shouldContain("24 2: DumpSymbolAndStringTable\n");
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if (sharingEnabled) {
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output.shouldContain(sharedSymbolsHeader);
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output.shouldContain("17 65535: java.lang.runtime\n");
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}
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} catch (RuntimeException e) {
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output.shouldContain("Unknown diagnostic command");
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}
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pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.stringtable", "-verbose"});
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output = CDSTestUtils.executeAndLog(pb, "jcmd-stringtable");
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final String sharedStringsHeader = "Shared strings:\n";
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try {
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output.shouldContain("24: DumpSymbolAndStringTable\n");
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if (sharingEnabled && wb.canWriteJavaHeapArchive()) {
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output.shouldContain(sharedStringsHeader);
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if (!wb.isSharedInternedString("MILLI_OF_SECOND")) {
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throw new RuntimeException("'MILLI_OF_SECOND' should be a shared string");
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}
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}
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} catch (RuntimeException e) {
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output.shouldContain("Unknown diagnostic command");
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}
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pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.systemdictionary"});
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output = CDSTestUtils.executeAndLog(pb, "jcmd-systemdictionary");
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try {
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output.shouldContain("System Dictionary for 'app' class loader statistics:");
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output.shouldContain("Number of buckets");
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output.shouldContain("Number of entries");
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output.shouldContain("Maximum bucket size");
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} catch (RuntimeException e) {
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output.shouldContain("Unknown diagnostic command");
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}
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pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.systemdictionary", "-verbose"});
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output = CDSTestUtils.executeAndLog(pb, "jcmd-systemdictionary");
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try {
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output.shouldContain("Dictionary for loader data: 0x");
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output.shouldContain("^java.lang.String");
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} catch (RuntimeException e) {
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output.shouldContain("Unknown diagnostic command");
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}
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}
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}
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