Example usage for java.lang.management ThreadMXBean isSynchronizerUsageSupported

Introduction

In this page you can find the example usage for java.lang.management ThreadMXBean isSynchronizerUsageSupported.

Prototype

public boolean isSynchronizerUsageSupported();

Source Link

Document

Tests if the Java virtual machine supports monitoring of ownable synchronizer usage.

Usage

From source file:Main.java

/** Returns all stack traces, including lock info. */
public static String getAllStackTraces() {
    ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
    boolean monitor = threadMXBean.isObjectMonitorUsageSupported();
    boolean sync = threadMXBean.isSynchronizerUsageSupported();
    ThreadInfo[] allThreadInfo = threadMXBean.dumpAllThreads(monitor, sync);
    StringBuilder sb = new StringBuilder("Stack Trace Report:\n");
    buildTrace(allThreadInfo, sb);/*from ww w.  ja  va 2  s  .c o  m*/
    return sb.toString();
}

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From source file:Main.java

/**
 * Get the thread info for the thread with the given ID.
 * A null is returned if no such thread info is found.
 *
 * @param   id   the thread ID to search for
 * @return      the thread info, or null if not found
 * @throws   IllegalArgumentException/*w  w w  . j  a v a 2 s. c om*/
 *         if id <= 0
 */
public static ThreadInfo getThreadInfo(final long id) {
    final ThreadMXBean thbean = ManagementFactory.getThreadMXBean();

    // Get thread info with lock info, when available.
    if (!thbean.isObjectMonitorUsageSupported() || !thbean.isSynchronizerUsageSupported())
        return thbean.getThreadInfo(id);

    final ThreadInfo[] infos = thbean.getThreadInfo(new long[] { id }, true, true);
    if (infos.length == 0)
        return null;
    return infos[0];
}

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From source file:Main.java

/**
 * Get the thread info for the thread with the given ID. A null is returned
 * if no such thread info is found./* ww w .j a v  a 2s  .  co  m*/
 * 
 * @param id
 *        the thread ID to search for
 * @return the thread info, or null if not found
 * @throws IllegalArgumentException
 *         if id <= 0
 */
public static ThreadInfo getThreadInfo(final long id) {
    final ThreadMXBean thbean = ManagementFactory.getThreadMXBean();

    // Get thread info with lock info, when available.
    if (!thbean.isObjectMonitorUsageSupported() || !thbean.isSynchronizerUsageSupported()) {
        return thbean.getThreadInfo(id);
    }

    final ThreadInfo[] infos = thbean.getThreadInfo(new long[] { id }, true, true);
    if (infos.length == 0)
        return null;
    return infos[0];
}

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From source file:Main.java

/**
 * Get a list of all thread info objects.  Since there is
 * always at least one thread running, there is always at
 * least one thread info object.  This method never returns
 * a null or empty array.// w  ww.  j a  v  a2  s.  co m
 *
 * @return      an array of thread infos
 */
public static ThreadInfo[] getAllThreadInfos() {
    final ThreadMXBean thbean = ManagementFactory.getThreadMXBean();
    final long[] ids = thbean.getAllThreadIds();

    // Get thread info with lock info, when available.
    ThreadInfo[] infos;
    if (!thbean.isObjectMonitorUsageSupported() || !thbean.isSynchronizerUsageSupported())
        infos = thbean.getThreadInfo(ids);
    else
        infos = thbean.getThreadInfo(ids, true, true);

    // Clean nulls from array if threads have died.
    final ThreadInfo[] notNulls = new ThreadInfo[infos.length];
    int nNotNulls = 0;
    for (ThreadInfo info : infos)
        if (info != null)
            notNulls[nNotNulls++] = info;
    if (nNotNulls == infos.length)
        return infos; // Original had no nulls
    return java.util.Arrays.copyOf(notNulls, nNotNulls);
}

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From source file:Main.java

/**
 * Get a list of all thread info objects. Since there is always at least one
 * thread running, there is always at least one thread info object. This
 * method never returns a null or empty array.
 * /*from   www  . j a v  a  2s.c  o  m*/
 * @return an array of thread infos
 */
public static ThreadInfo[] getAllThreadInfos() {
    final ThreadMXBean thbean = ManagementFactory.getThreadMXBean();
    final long[] ids = thbean.getAllThreadIds();

    // Get thread info with lock info, when available.
    ThreadInfo[] infos;
    if (!thbean.isObjectMonitorUsageSupported() || !thbean.isSynchronizerUsageSupported()) {
        infos = thbean.getThreadInfo(ids);
    } else {
        infos = thbean.getThreadInfo(ids, true, true);
    }

    // Clean nulls from array if threads have died.
    final ThreadInfo[] notNulls = new ThreadInfo[infos.length];
    int nNotNulls = 0;
    for (ThreadInfo info : infos) {
        if (info != null) {
            notNulls[nNotNulls++] = info;
        }
    }
    if (nNotNulls == infos.length)
        return infos; // Original had no nulls
    return java.util.Arrays.copyOf(notNulls, nNotNulls);
}

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From source file:net.bull.javamelody.internal.model.JavaInformations.java

private static long[] getDeadlockedThreads(ThreadMXBean threadBean) {
    final long[] deadlockedThreads;
    if (threadBean.isSynchronizerUsageSupported()) {
        deadlockedThreads = threadBean.findDeadlockedThreads();
    } else {/*from  w  w  w  . jav a2  s .c  o  m*/
        deadlockedThreads = threadBean.findMonitorDeadlockedThreads();
    }
    if (deadlockedThreads != null) {
        Arrays.sort(deadlockedThreads);
    }
    return deadlockedThreads;
}

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From source file:com.workplacesystems.utilsj.ThreadDumperJdk16.java

@Override
ThreadInfo[] getThreadInfos(ThreadMXBean bean) {
    return bean.dumpAllThreads(bean.isObjectMonitorUsageSupported(), bean.isSynchronizerUsageSupported());
}

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From source file:hudson.Functions.java

@IgnoreJRERequirement
public static ThreadInfo[] getThreadInfos() {
    ThreadMXBean mbean = ManagementFactory.getThreadMXBean();
    return mbean.getThreadInfo(mbean.getAllThreadIds(), mbean.isObjectMonitorUsageSupported(),
            mbean.isSynchronizerUsageSupported());
}

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From source file:org.fluentd.jvmwatcher.proxy.JvmClientProxy.java

/**
 * @return//from  ww  w. ja va2 s  .c om
 * @throws IOException
 */
public long[] findDeadlockedThreads() throws IOException {
    ThreadMXBean threadMx = getThreadMXBean();
    if (this.supportsLockUsage_ && threadMx.isSynchronizerUsageSupported()) {
        return threadMx.findDeadlockedThreads();
    } else {
        return threadMx.findMonitorDeadlockedThreads();
    }
}

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