Author: fmeschbe
Date: Tue Nov 18 02:23:37 2008
New Revision: 718548
URL: http://svn.apache.org/viewvc?rev=718548&view=rev
Log:
SLING-737 Provide Thread Dumper extension to web console and shell
Added:
incubator/sling/trunk/extensions/threaddump/ (with props)
incubator/sling/trunk/extensions/threaddump/pom.xml (with props)
incubator/sling/trunk/extensions/threaddump/src/
incubator/sling/trunk/extensions/threaddump/src/main/
incubator/sling/trunk/extensions/threaddump/src/main/java/
incubator/sling/trunk/extensions/threaddump/src/main/java/org/
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/Activator.java
(with props)
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/BaseThreadDumper.java
(with props)
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/ThreadDumpCommand.java
(with props)
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/ThreadDumperPanel.java
(with props)
Propchange: incubator/sling/trunk/extensions/threaddump/
------------------------------------------------------------------------------
--- svn:ignore (added)
+++ svn:ignore Tue Nov 18 02:23:37 2008
@@ -0,0 +1,4 @@
+.classpath
+.project
+target
+.settings
Added: incubator/sling/trunk/extensions/threaddump/pom.xml
URL:
http://svn.apache.org/viewvc/incubator/sling/trunk/extensions/threaddump/pom.xml?rev=718548&view=auto
==============================================================================
--- incubator/sling/trunk/extensions/threaddump/pom.xml (added)
+++ incubator/sling/trunk/extensions/threaddump/pom.xml Tue Nov 18 02:23:37 2008
@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!--
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied. See the License for the
+ specific language governing permissions and limitations
+ under the License.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0";
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd";>
+
+ <modelVersion>4.0.0</modelVersion>
+ <parent>
+ <groupId>org.apache.sling</groupId>
+ <artifactId>sling</artifactId>
+ <version>4-incubator-SNAPSHOT</version>
+ <relativePath>../../parent/pom.xml</relativePath>
+ </parent>
+
+ <artifactId>org.apache.sling.extensions.threaddump</artifactId>
+ <packaging>bundle</packaging>
+ <version>0.1.0-incubator-SNAPSHOT</version>
+
+ <name>Sling Thread Dumper</name>
+ <description>
+ Plugin providing plugins to the Felix Shell and Web Console to
+ have the current threads with the stack traces dumped.
+ </description>
+
+ <scm>
+ <connection>
+
scm:svn:http://svn.apache.org/repos/asf/incubator/sling/trunk/extensions/threaddump
+ </connection>
+ <developerConnection>
+
scm:svn:https://svn.apache.org/repos/asf/incubator/sling/trunk/extensions/threaddump
+ </developerConnection>
+ <url>
+
http://svn.apache.org/viewvc/incubator/sling/trunk/extensions/threaddump
+ </url>
+ </scm>
+
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>maven-bundle-plugin</artifactId>
+ <extensions>true</extensions>
+ <configuration>
+ <instructions>
+ <Import-Package>
+ org.osgi.framework,
+ javax.servlet.*;
+ org.apache.felix.shell;
+ org.apache.felix.webconsole;resolution:=optional
+ </Import-Package>
+ <Private-Package>
+ org.apache.sling.extensions.threaddump.*
+ </Private-Package>
+ <Bundle-Activator>
+ org.apache.sling.extensions.threaddump.Activator
+ </Bundle-Activator>
+ </instructions>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
+ <reporting>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-javadoc-plugin</artifactId>
+ <configuration>
+ <excludePackageNames>
+ org.apache.sling.extensions.threaddump.internal
+ </excludePackageNames>
+ </configuration>
+ </plugin>
+ </plugins>
+ </reporting>
+ <dependencies>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.osgi.core</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.osgi.compendium</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.apache.felix.shell</artifactId>
+ <version>1.0.0</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.apache.felix.webconsole</artifactId>
+ <version>1.2.0</version>
+ </dependency>
+ <dependency>
+ <groupId>javax.servlet</groupId>
+ <artifactId>servlet-api</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>junit</groupId>
+ <artifactId>junit</artifactId>
+ </dependency>
+ </dependencies>
+</project>
Propchange: incubator/sling/trunk/extensions/threaddump/pom.xml
------------------------------------------------------------------------------
svn:eol-style = native
Added:
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/Activator.java
URL:
http://svn.apache.org/viewvc/incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/Activator.java?rev=718548&view=auto
==============================================================================
---
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/Activator.java
(added)
+++
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/Activator.java
Tue Nov 18 02:23:37 2008
@@ -0,0 +1,71 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.sling.extensions.threaddump;
+
+import java.util.Dictionary;
+import java.util.Hashtable;
+
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.Constants;
+
+public class Activator implements BundleActivator {
+
+ public void start(BundleContext bundleContext) {
+ try {
+ register(bundleContext,
+ new String[] { "org.apache.felix.shell.Command" },
+ new ThreadDumpCommand(), null);
+ } catch (Throwable t) {
+ // shell service might not be available, don't care
+ }
+ try {
+ ThreadDumperPanel tdp = new ThreadDumperPanel();
+ tdp.activate(bundleContext);
+
+ Dictionary<String, Object> properties = new Hashtable<String,
Object>();
+ properties.put("felix.webconsole.label", tdp.getLabel());
+
+ register(bundleContext, new String[] { "javax.servlet.Servlet",
+ "org.apache.felix.webconsole.ConfigurationPrinter" }, tdp,
+ properties);
+ } catch (Throwable t) {
+ // shell service might not be available, don't care
+ }
+ }
+
+ public void stop(BundleContext bundleContext) {
+ }
+
+ private void register(BundleContext context, String[] serviceNames,
+ Object service, Dictionary<String, Object> properties) {
+
+ // ensure properties
+ if (properties == null) {
+ properties = new Hashtable<String, Object>();
+ }
+
+ // default settings
+ properties.put(Constants.SERVICE_DESCRIPTION, "Thread Dumper ("
+ + serviceNames[0] + ")");
+ properties.put(Constants.SERVICE_VENDOR, "Apache Software Foundation");
+
+ context.registerService(serviceNames, service, properties);
+ }
+}
Propchange:
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/Activator.java
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svn:eol-style = native
Propchange:
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/Activator.java
------------------------------------------------------------------------------
svn:keywords = Author Date Id Revision Rev Url
Added:
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/BaseThreadDumper.java
URL:
http://svn.apache.org/viewvc/incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/BaseThreadDumper.java?rev=718548&view=auto
==============================================================================
---
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/BaseThreadDumper.java
(added)
+++
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/BaseThreadDumper.java
Tue Nov 18 02:23:37 2008
@@ -0,0 +1,164 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.sling.extensions.threaddump;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+import javax.servlet.Servlet;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.felix.webconsole.AbstractWebConsolePlugin;
+import org.apache.felix.webconsole.ConfigurationPrinter;
+
+class BaseThreadDumper {
+
+ boolean printThread(PrintWriter pw, long threadId, boolean withStackTrace)
{
+ // first get the root thread group
+ ThreadGroup rootGroup = getRootThreadGroup();
+ int numThreads = rootGroup.activeCount();
+ Thread[] threads = new Thread[numThreads * 2];
+ rootGroup.enumerate(threads);
+
+ for (Thread thread : threads) {
+ if (thread != null && thread.getId() == threadId) {
+ printThread(pw, thread, withStackTrace);
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ void printThreads(PrintWriter pw, boolean withStackTrace) {
+ // first get the root thread group
+ ThreadGroup rootGroup = getRootThreadGroup();
+
+ printThreadGroup(pw, rootGroup, withStackTrace);
+
+ int numGroups = rootGroup.activeGroupCount();
+ ThreadGroup[] groups = new ThreadGroup[2 * numGroups];
+ rootGroup.enumerate(groups);
+ for (int i = 0; i < groups.length; i++) {
+ printThreadGroup(pw, groups[i], withStackTrace);
+ }
+
+ pw.println();
+ }
+
+ private ThreadGroup getRootThreadGroup() {
+ ThreadGroup rootGroup = Thread.currentThread().getThreadGroup();
+ while (rootGroup.getParent() != null) {
+ rootGroup = rootGroup.getParent();
+ }
+ return rootGroup;
+ }
+
+ private void printThreadGroup(PrintWriter pw, ThreadGroup group, boolean
withStackTrace) {
+ if (group != null) {
+ StringBuffer info = new StringBuffer();
+ info.append("ThreadGroup ").append(group.getName());
+ info.append(" [");
+ info.append("maxprio=").append(group.getMaxPriority());
+
+ info.append(", parent=");
+ if (group.getParent() != null) {
+ info.append(group.getParent().getName());
+ } else {
+ info.append('-');
+ }
+
+ info.append(", isDaemon=").append(group.isDaemon());
+ info.append(", isDestroyed=").append(group.isDestroyed());
+ info.append(']');
+
+ pw.println(info);
+
+ int numThreads = group.activeCount();
+ Thread[] threads = new Thread[numThreads * 2];
+ group.enumerate(threads, false);
+ for (int i = 0; i < threads.length; i++) {
+ printThread(pw, threads[i], withStackTrace);
+ }
+
+ pw.println();
+ }
+ }
+
+ private void printThread(PrintWriter pw, Thread thread, boolean
withStackTrace) {
+ if (thread != null) {
+ StringBuffer info = new StringBuffer();
+ info.append(" Thread ").append(thread.getId());
+ info.append('/').append(thread.getName());
+ info.append(" [");
+ info.append("priority=").append(thread.getPriority());
+ info.append(", alive=").append(thread.isAlive());
+ info.append(", daemon=").append(thread.isDaemon());
+ info.append(", interrupted=").append(thread.isInterrupted());
+ info.append(", loader=").append(thread.getContextClassLoader());
+ info.append(']');
+
+ pw.println(info);
+
+ if (withStackTrace) {
+ printClassLoader(pw, thread.getContextClassLoader());
+ printStackTrace(pw, thread.getStackTrace());
+ pw.println();
+ }
+ }
+ }
+
+ private void printClassLoader(PrintWriter pw, ClassLoader classLoader) {
+ if (classLoader != null) {
+ pw.print(" ClassLoader=");
+ pw.println(classLoader);
+ pw.print(" Parent=");
+ pw.println(classLoader.getParent());
+
+ if (classLoader instanceof URLClassLoader) {
+ URLClassLoader loader = (URLClassLoader) classLoader;
+ URL[] urls = loader.getURLs();
+ if (urls != null && urls.length > 0) {
+ for (int i = 0; i < urls.length; i++) {
+ pw.print(" ");
+ pw.print(i);
+ pw.print(" - ");
+ pw.println(urls[i]);
+ }
+ }
+ }
+ }
+ }
+
+ private void printStackTrace(PrintWriter pw, StackTraceElement[]
stackTrace) {
+ pw.println(" Stacktrace");
+ if (stackTrace == null || stackTrace.length == 0) {
+ pw.println(" -");
+ } else {
+ for (StackTraceElement stackTraceElement : stackTrace) {
+ pw.print(" ");
+ pw.println(stackTraceElement);
+ }
+ }
+ }
+}
Propchange:
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/BaseThreadDumper.java
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svn:eol-style = native
Propchange:
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/BaseThreadDumper.java
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svn:keywords = Author Date Id Revision Rev Url
Added:
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/ThreadDumpCommand.java
URL:
http://svn.apache.org/viewvc/incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/ThreadDumpCommand.java?rev=718548&view=auto
==============================================================================
---
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/ThreadDumpCommand.java
(added)
+++
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/ThreadDumpCommand.java
Tue Nov 18 02:23:37 2008
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.sling.extensions.threaddump;
+
+import java.io.PrintStream;
+import java.io.PrintWriter;
+import java.util.LinkedList;
+import java.util.StringTokenizer;
+
+import org.apache.felix.shell.Command;
+
+public class ThreadDumpCommand extends BaseThreadDumper implements Command {
+
+ private static final String CMD_NAME = "threads";
+
+ private static final String OPT_STACK = "-s";
+
+ public String getName() {
+ return CMD_NAME;
+ }
+
+ public String getShortDescription() {
+ return "dumps the JVM threads";
+ }
+
+ public String getUsage() {
+ return CMD_NAME + " [" + OPT_STACK + "] <id> ...";
+ }
+
+ public void execute(String command, PrintStream out, PrintStream err) {
+
+ // cut off leading command name
+ if (command.startsWith(CMD_NAME)) {
+ command = command.substring(CMD_NAME.length());
+ }
+
+ boolean longListing = false;
+ LinkedList<Long> threadIds = new LinkedList<Long>();
+
+ StringTokenizer tokener = new StringTokenizer(command, ", \t");
+ while (tokener.hasMoreTokens()) {
+ String token = tokener.nextToken().trim();
+ if (OPT_STACK.equals(token)) {
+ longListing = true;
+ } else {
+ try {
+ long threadId = Long.parseLong(token);
+ threadIds.add(threadId);
+ } catch (NumberFormatException nfe) {
+ noSuchThread(err, token);
+ }
+ }
+ }
+
+ PrintWriter pw = new PrintWriter(out);
+
+ if (threadIds.isEmpty()) {
+ printThreads(pw, longListing);
+ } else {
+ while (!threadIds.isEmpty()) {
+ Long threadId = threadIds.removeFirst();
+ if (!printThread(pw, threadId, longListing)) {
+ noSuchThread(err, threadId);
+ }
+ }
+ }
+
+ pw.flush();
+ }
+
+ private void noSuchThread(PrintStream err, Object threadId) {
+ err.println("No such Thread: " + threadId);
+ err.flush();
+ }
+
+}
Propchange:
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Propchange:
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/ThreadDumpCommand.java
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svn:keywords = Author Date Id Revision Rev Url
Added:
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/ThreadDumperPanel.java
URL:
http://svn.apache.org/viewvc/incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/ThreadDumperPanel.java?rev=718548&view=auto
==============================================================================
---
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/ThreadDumperPanel.java
(added)
+++
incubator/sling/trunk/extensions/threaddump/src/main/java/org/apache/sling/extensions/threaddump/ThreadDumperPanel.java
Tue Nov 18 02:23:37 2008
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.sling.extensions.threaddump;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Iterator;
+import java.util.Locale;
+
+import javax.servlet.Servlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.felix.webconsole.AbstractWebConsolePlugin;
+import org.apache.felix.webconsole.ConfigurationPrinter;
+
+public class ThreadDumperPanel extends AbstractWebConsolePlugin implements
+ Servlet, ConfigurationPrinter {
+
+ private static final String LABEL = "threads";
+
+ private static final String TITLE = "Threads";
+
+ private BaseThreadDumper baseThreadDumper = new BaseThreadDumper();
+
+ // ---------- AbstractWebConsolePlugin API
+
+ @Override
+ public String getLabel() {
+ return LABEL;
+ }
+
+ @Override
+ public String getTitle() {
+ return TITLE;
+ }
+
+ @Override
+ protected void renderContent(HttpServletRequest request,
+ HttpServletResponse response) throws IOException {
+ PrintWriter pw = response.getWriter();
+
+ pw.println("<pre>");
+ pw.println("</pre>");
+
+ pw.println( "<table class='content' cellpadding='0' cellspacing='0'
width='100%'>" );
+
+ pw.println( "<tr class='content'>" );
+ pw.println( "<th class='content container'>" + getTitle() + "</th>" );
+ pw.println( "</tr>" );
+
+ pw.println( "<tr class='content'>" );
+ pw.println( "<td class='content'>" );
+ pw.println( "<pre>" );
+
+ pw.println( "*** Date: "
+ + SimpleDateFormat.getDateTimeInstance( SimpleDateFormat.LONG,
SimpleDateFormat.LONG, Locale.US ).format(
+ new Date() ) );
+ pw.println();
+
+ baseThreadDumper.printThreads(pw, true);
+
+ pw.println( "</pre>" );
+ pw.println( "</td>" );
+ pw.println( "</tr>" );
+ pw.println( "</table>" );
+ }
+
+ // ---------- ConfigurationPrinter
+
+ public void printConfiguration(PrintWriter pw) {
+ pw.println("*** Threads Dumps:");
+ baseThreadDumper.printThreads(pw, true);
+ }
+}
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