List of findMonitorDeadlockedThreads() Examples

Examples of findMonitorDeadlockedThreads()

java.lang.management.ThreadMXBean.findMonitorDeadlockedThreads()
Finds cycles of threads that are in deadlock waiting to acquire object monitors. That is, threads that are blocked waiting to enter a synchronization block or waiting to reenter a synchronization block after an {@link Object#wait Object.wait} call, where each thread owns one monitor while trying to obtain another monitor already held by another thread in a cycle.
More formally, a thread is monitor deadlocked if it is part of a cycle in the relation "is waiting for an object monitor owned by". In the simplest case, thread A is blocked waiting for a monitor owned by thread B, and thread B is blocked waiting for a monitor owned by thread A.
This method is designed for troubleshooting use, but not for synchronization control. It might be an expensive operation.
This method finds deadlocks involving only object monitors. To find deadlocks involving both object monitors and ownable synchronizers, the {@link #findDeadlockedThreads findDeadlockedThreads} methodshould be used. @return an array of IDs of the threads that are monitordeadlocked, if any; null otherwise. @throws java.lang.SecurityException if a security managerexists and the caller does not have ManagementPermission("monitor"). @see #findDeadlockedThreads

Examples of java.lang.management.ThreadMXBean.findMonitorDeadlockedThreads()


        final long[] deadLocked;
        if (threadBean.isSynchronizerUsageSupported()) {
            deadLocked = threadBean.findDeadlockedThreads();
        } else {
            deadLocked = threadBean.findMonitorDeadlockedThreads();
        }
        if (deadLocked != null) {
            final ThreadInfo[] dl = threadBean.getThreadInfo(deadLocked, true, true);
            final Set<ThreadInfo> dlSet = new HashSet<ThreadInfo>(Arrays.asList(dl));
            int deadlockCount = 0;

View Full Code Here

Examples of java.lang.management.ThreadMXBean.findMonitorDeadlockedThreads()

    nl.add( "daemon", tmbean.getDaemonThreadCount() );
    system.add( "threadCount", nl );
    
    // Deadlocks
    ThreadInfo[] tinfos;
    long[] tids = tmbean.findMonitorDeadlockedThreads();
    if (tids != null) {
      tinfos = tmbean.getThreadInfo(tids, Integer.MAX_VALUE);
      NamedList<SimpleOrderedMap<Object>> lst = new NamedList<SimpleOrderedMap<Object>>();
      for (ThreadInfo ti : tinfos) {
        lst.add( "thread", getThreadInfo( ti, tmbean ) );

View Full Code Here

Examples of java.lang.management.ThreadMXBean.findMonitorDeadlockedThreads()

            if (deadlockedThreads == null || deadlockedThreads.length == 0) {
                return null;
            }
            return threadMXBean.getThreadInfo(deadlockedThreads, true, true);
        } else {
            long[] monitorDeadlockedThreads = threadMXBean.findMonitorDeadlockedThreads();
            return getThreadInfos(threadMXBean, monitorDeadlockedThreads);
        }
    }


    public static ThreadInfo[] getAllThreads() {

View Full Code Here

Examples of java.lang.management.ThreadMXBean.findMonitorDeadlockedThreads()

        c1.get().write("start");


        ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();


        while (!messageCount.await(100, TimeUnit.MILLISECONDS)) {
            long[] threads = threadMXBean.findMonitorDeadlockedThreads();


            if (null != threads) {
                StringBuffer sb = new StringBuffer(256);
                ThreadInfo[] infos = threadMXBean.getThreadInfo(threads, Integer.MAX_VALUE);

View Full Code Here

Examples of java.lang.management.ThreadMXBean.findMonitorDeadlockedThreads()

        if(deadlocks != null && deadlocks.length > 0) {
            sb.append("deadlocked threads:\n");
            _printThreads(bean,deadlocks,sb);
        }


        deadlocks=bean.findMonitorDeadlockedThreads();
        if(deadlocks != null && deadlocks.length > 0) {
            sb.append("monitor deadlocked threads:\n");
            _printThreads(bean,deadlocks,sb);
        }
        return sb.toString();

View Full Code Here

Examples of java.lang.management.ThreadMXBean.findMonitorDeadlockedThreads()

        return res;
    }


    private Double getDeadLockedThreadsCount(EmsBean bean) {
        ThreadMXBean threadBean = bean.getProxy(ThreadMXBean.class);
        long[] tids = threadBean.findMonitorDeadlockedThreads();
        if (tids == null) {
            return 0.0;
        } else {
            return new Double(tids.length);
        }

View Full Code Here

Examples of java.lang.management.ThreadMXBean.findMonitorDeadlockedThreads()

    nl.add( "daemon", tmbean.getDaemonThreadCount() );
    system.add( "threadCount", nl );
    
    // Deadlocks
    ThreadInfo[] tinfos;
    long[] tids = tmbean.findMonitorDeadlockedThreads();
    if (tids != null) {
      tinfos = tmbean.getThreadInfo(tids, Integer.MAX_VALUE);
      NamedList<SimpleOrderedMap<Object>> lst = new NamedList<SimpleOrderedMap<Object>>();
      for (ThreadInfo ti : tinfos) {
        lst.add( "thread", getThreadInfo( ti, tmbean ) );

View Full Code Here

Examples of java.lang.management.ThreadMXBean.findMonitorDeadlockedThreads()

    nl.add( "daemon", tmbean.getDaemonThreadCount() );
    system.add( "threadCount", nl );
    
    // Deadlocks
    ThreadInfo[] tinfos;
    long[] tids = tmbean.findMonitorDeadlockedThreads();
    if (tids != null) {
      tinfos = tmbean.getThreadInfo(tids, Integer.MAX_VALUE);
      NamedList<SimpleOrderedMap<Object>> lst = new NamedList<SimpleOrderedMap<Object>>();
      for (ThreadInfo ti : tinfos) {
        lst.add( "thread", getThreadInfo( ti, tmbean ) );

View Full Code Here

Examples of java.lang.management.ThreadMXBean.findMonitorDeadlockedThreads()

    nl.add( "daemon", tmbean.getDaemonThreadCount() );
    system.add( "threadCount", nl );
    
    // Deadlocks
    ThreadInfo[] tinfos;
    long[] tids = tmbean.findMonitorDeadlockedThreads();
    if (tids != null) {
      tinfos = tmbean.getThreadInfo(tids, Integer.MAX_VALUE);
      NamedList<SimpleOrderedMap<Object>> lst = new NamedList<SimpleOrderedMap<Object>>();
      for (ThreadInfo ti : tinfos) {
        lst.add( "thread", getThreadInfo( ti, tmbean ) );

View Full Code Here

Examples of java.lang.management.ThreadMXBean.findMonitorDeadlockedThreads()

        ((IoSession) c1.get()).write( "start" );


        ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();


        while ( !messageCount.await( 100, TimeUnit.MILLISECONDS ) ) {
            long[] threads = threadMXBean.findMonitorDeadlockedThreads();


            if ( null != threads ) {
                StringBuffer sb = new StringBuffer( 256 );
                ThreadInfo[] infos = threadMXBean.getThreadInfo( threads, Integer.MAX_VALUE );

View Full Code Here

0 1 2 3

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.