List of findDeadlockedThreads() Examples

Examples of findDeadlockedThreads()

java.lang.management.ThreadMXBean.findDeadlockedThreads()
Finds cycles of threads that are in deadlock waiting to acquire object monitors or ownable synchronizers. Threads are deadlocked in a cycle waiting for a lock of these two types if each thread owns one lock while trying to acquire another lock already held by another thread in the cycle.
This method is designed for troubleshooting use, but not for synchronization control. It might be an expensive operation. @return an array of IDs of the threads that are deadlocked waiting for object monitors or ownable synchronizers, if any; null otherwise. @throws java.lang.SecurityException if a security managerexists and the caller does not have ManagementPermission("monitor"). @throws java.lang.UnsupportedOperationException if the Java virtual machine does not support monitoriing of ownable synchronizer usage. @see #isSynchronizerUsageSupported @see #findMonitorDeadlockedThreads @since 1.6

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


        public void run()
        {
          while (!_stopping)
          {
            long[] ids = bean.findDeadlockedThreads();
            if (ids != null && ids.length > 0)
            {
              System.err.println("wrapper.java.monitor.deadlock: DEADLOCK IN THREADS: ");
              threadDump(ids);
              // exit loop once we find a deadlock

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

            writeLine(socket, "-");
        }


        final long[] deadLocked;
        if (threadBean.isSynchronizerUsageSupported()) {
            deadLocked = threadBean.findDeadlockedThreads();
        } else {
            deadLocked = threadBean.findMonitorDeadlockedThreads();
        }
        if (deadLocked != null) {
            final ThreadInfo[] dl = threadBean.getThreadInfo(deadLocked, true, true);

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

    }


    public static ThreadInfo[] findDeadlockedThreads() {
        ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
        if (threadMXBean.isSynchronizerUsageSupported()) {
            long[] deadlockedThreads = threadMXBean.findDeadlockedThreads();
            if (deadlockedThreads == null || deadlockedThreads.length == 0) {
                return null;
            }
            return threadMXBean.getThreadInfo(deadlockedThreads, true, true);
        } else {

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

        for (ThreadInfo threadInfo : threadInfos)
        {
            dump.append(threadInfo);
        }


        long[] deadLocks = threadMXBean.findDeadlockedThreads();
        if (deadLocks != null && deadLocks.length > 0)
        {
            ThreadInfo[] deadlockedThreads = threadMXBean.getThreadInfo(deadLocks);
            dump.append(String.format("%n"));
            dump.append("Deadlock is detected!");

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

    public static String dumpThreads() {
        StringBuilder sb=new StringBuilder();
        ThreadMXBean bean=ManagementFactory.getThreadMXBean();
        long[] ids=bean.getAllThreadIds();
        _printThreads(bean,ids,sb);
        long[] deadlocks=bean.findDeadlockedThreads();
        if(deadlocks != null && deadlocks.length > 0) {
            sb.append("deadlocked threads:\n");
            _printThreads(bean,deadlocks,sb);
        }

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

    String file = null;
    
    protected Object doExecute() throws Exception {


        ThreadMXBean mxbean = ManagementFactory.getThreadMXBean(); 
        long[] threadIds = mxbean.findDeadlockedThreads();
        if (threadIds == null || threadIds.length == 0) {
            System.out.println("No deadlocked threads detected.");
        } else {
            ThreadInfo[] threads = mxbean.getThreadInfo(threadIds, true, true);

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

        
        if(!executorService.isTerminated()) {
            /* uncomment this block to perform deadlock checking, only on java 1.6 */
            // Check for deadlock
            ThreadMXBean tmx = ManagementFactory.getThreadMXBean();
            long[] ids = tmx.findDeadlockedThreads();
            if (ids != null) {
                ThreadInfo[] infos = tmx.getThreadInfo(ids, true, true);
                
                System.err.println("*** Deadlocked threads");
                for (ThreadInfo ti : infos) {

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

    public static String dumpThreads() {
        StringBuilder sb=new StringBuilder();
        ThreadMXBean bean=ManagementFactory.getThreadMXBean();
        long[] ids=bean.getAllThreadIds();
        _printThreads(bean, ids, sb);
        long[] deadlocks=bean.findDeadlockedThreads();
        if(deadlocks != null && deadlocks.length > 0) {
            sb.append("deadlocked threads:\n");
            _printThreads(bean, deadlocks, sb);
        }

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

        for (ThreadInfo threadInfo : threadInfos)
        {
            dump.append(threadInfo);
        }


        long[] deadLocks = threadMXBean.findDeadlockedThreads();
        if (deadLocks != null && deadLocks.length > 0)
        {
            ThreadInfo[] deadlockedThreads = threadMXBean.getThreadInfo(deadLocks);
            dump.append(String.format("%n"));
            dump.append("Deadlock is detected!");

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

        if (!success) {
            dumpAllThreads("hung");


            ThreadMXBean bean = ManagementFactory.getThreadMXBean();
            LOG.info("Supports dead lock detection: " + bean.isSynchronizerUsageSupported());
            long[] threadIds = bean.findDeadlockedThreads();
            if (threadIds != null) {
                System.err.println("Dead locked threads....");
                ThreadInfo[] infos = bean.getThreadInfo(threadIds);


                for (ThreadInfo info : infos) {

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