com.googlecode.psiprobe.controllers.threads.ListSunThreadsController.java Source code

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Here is the source code for com.googlecode.psiprobe.controllers.threads.ListSunThreadsController.java

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/*
 * Licensed under the GPL License.  You may not use this file except in
 * compliance with the License.  You may obtain a copy of the License at
 *
 *     http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 *
 * THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */
package com.googlecode.psiprobe.controllers.threads;

import com.googlecode.psiprobe.model.SunThread;
import com.googlecode.psiprobe.model.ThreadStackElement;
import com.googlecode.psiprobe.tools.JmxTools;
import java.util.ArrayList;
import java.util.List;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.management.openmbean.CompositeData;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.modeler.Registry;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.ParameterizableViewController;

/**
 * 
 * @author Vlad Ilyushchenko
 */
public class ListSunThreadsController extends ParameterizableViewController {

    protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
            throws Exception {

        List threads = null;
        int executionStackDepth = 1;

        MBeanServer mBeanServer = new Registry().getMBeanServer();
        ObjectName threadingOName = new ObjectName("java.lang:type=Threading");

        long[] deadlockedIds = (long[]) mBeanServer.invoke(threadingOName, "findMonitorDeadlockedThreads", null,
                null);
        long[] allIds = (long[]) mBeanServer.getAttribute(threadingOName, "AllThreadIds");

        if (allIds != null) {
            threads = new ArrayList(allIds.length);

            for (int i = 0; i < allIds.length; i++) {
                CompositeData cd = (CompositeData) mBeanServer.invoke(threadingOName, "getThreadInfo",
                        new Object[] { new Long(allIds[i]), new Integer(executionStackDepth) },
                        new String[] { "long", "int" });

                if (cd != null) {
                    SunThread st = new SunThread();
                    st.setId(JmxTools.getLongAttr(cd, "threadId"));
                    st.setName(JmxTools.getStringAttr(cd, "threadName"));
                    st.setState(JmxTools.getStringAttr(cd, "threadState"));
                    st.setSuspended(JmxTools.getBooleanAttr(cd, "suspended"));
                    st.setInNative(JmxTools.getBooleanAttr(cd, "inNative"));
                    st.setLockName(JmxTools.getStringAttr(cd, "lockName"));
                    st.setLockOwnerName(JmxTools.getStringAttr(cd, "lockOwnerName"));
                    st.setWaitedCount(JmxTools.getLongAttr(cd, "waitedCount"));
                    st.setBlockedCount(JmxTools.getLongAttr(cd, "blockedCount"));
                    st.setDeadlocked(contains(deadlockedIds, st.getId()));

                    CompositeData[] stack = (CompositeData[]) cd.get("stackTrace");
                    if (stack.length > 0) {
                        CompositeData cd2 = stack[0];
                        ThreadStackElement tse = new ThreadStackElement();
                        tse.setClassName(JmxTools.getStringAttr(cd2, "className"));
                        tse.setFileName(JmxTools.getStringAttr(cd2, "fileName"));
                        tse.setMethodName(JmxTools.getStringAttr(cd2, "methodName"));
                        tse.setLineNumber(JmxTools.getIntAttr(cd2, "lineNumber", -1));
                        tse.setNativeMethod(JmxTools.getBooleanAttr(cd2, "nativeMethod"));
                        st.setExecutionPoint(tse);
                    }

                    threads.add(st);
                }
            }
        }
        return new ModelAndView(getViewName(), "threads", threads);
    }

    private static boolean contains(long[] array, long e) {
        if (array != null) {
            for (int i = 0; i < array.length; i++) {
                if (array[i] == e) {
                    return true;
                }
            }
        }
        return false;
    }
}