108 lines
4.3 KiB
Java
108 lines
4.3 KiB
Java
/*
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* Copyright (c) 2024, 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 8324066
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* @summary Test the clhsdb 'jstack -l' command for printing concurrent lock information
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* @requires vm.hasSA
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* @library /test/lib
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* @run main/othervm ClhsdbJstackWithConcurrentLock
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*/
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import java.util.List;
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import jdk.test.lib.apps.LingeredApp;
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import jtreg.SkippedException;
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public class ClhsdbJstackWithConcurrentLock {
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public static void main(String[] args) throws Exception {
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System.out.println("Starting the ClhsdbJstackWithConcurrentLock test");
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LingeredApp theApp = null;
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try {
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ClhsdbLauncher test = new ClhsdbLauncher();
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theApp = new LingeredAppWithConcurrentLock();
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// Use a small heap so the scan is quick.
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LingeredApp.startApp(theApp, "-Xmx4m");
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System.out.println("Started LingeredApp with pid " + theApp.getPid());
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// Run the 'jstack -l' command to get the stack and have java.util.concurrent
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// lock information included.
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List<String> cmds = List.of("jstack -l");
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String jstackOutput = test.run(theApp.getPid(), cmds, null, null);
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// We are looking for:
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// Locked ownable synchronizers:
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// - <0x00000000ffc2ed70>, (a java/util/concurrent/locks/ReentrantLock$NonfairSync)
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// We want to fetch the address from this line.
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String key = ", (a java/util/concurrent/locks/ReentrantLock$NonfairSync)";
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String[] lines = jstackOutput.split("\\R");
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String addressString = null;
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for (String line : lines) {
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if (line.contains(key)) {
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String[] words = line.split("[, ]");
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for (String word : words) {
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word = word.replace("<", "").replace(">", "");
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if (word.startsWith("0x")) {
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addressString = word;
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break;
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}
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}
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if (addressString != null)
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break;
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}
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}
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if (addressString == null) {
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throw new RuntimeException("Token '" + key + "' not found in jstack output");
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}
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// We are looking for the following java frame:
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// - jdk.internal.misc.Unsafe.park(boolean, long)...
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// - parking to wait for <0x00000000ffc2ed70> (a java/util/concurrent/locks/ReentrantLock$NonfairSync)
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// Note the address matches the one we found above.
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key = "- parking to wait for <" + addressString +
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"> (a java/util/concurrent/locks/ReentrantLock$NonfairSync)";
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boolean found = false;
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for (String line : lines) {
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if (line.contains(key)) {
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found = true;
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break;
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}
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}
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if (!found) {
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throw new RuntimeException("Token '" + key + "' not found in jstack output");
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}
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} catch (SkippedException e) {
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throw e;
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} catch (Exception ex) {
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throw new RuntimeException("Test ERROR " + ex, ex);
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} finally {
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LingeredApp.stopApp(theApp);
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System.out.println("OUTPUT: " + theApp.getOutput());
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}
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System.out.println("Test PASSED");
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}
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}
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