Examples with ThreadMXBean java.lang.management.ThreadMXBean used on opensource projects

Example 41 with ThreadMXBean

use of java.lang.management.ThreadMXBean in project jgnash by ccavanaugh.

the class EventDispatchThreadHangMonitor method checkForDeadlock.

private static void checkForDeadlock() {
    ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
    long[] threadIds = threadBean.findMonitorDeadlockedThreads();
    if (threadIds == null) {
        return;
    }
    Log.warn("deadlock detected involving the following threads:");
    ThreadInfo[] threadInfos = threadBean.getThreadInfo(threadIds, Integer.MAX_VALUE);
    for (ThreadInfo info : threadInfos) {
        Log.warn("Thread #" + info.getThreadId() + " " + info.getThreadName() + " (" + info.getThreadState() + ") waiting on " + info.getLockName() + " held by " + info.getLockOwnerName() + stackTraceToString(info.getStackTrace()));
    }
}

Example 42 with ThreadMXBean

use of java.lang.management.ThreadMXBean in project Gargoyle by callakrsos.

the class CPUUsageTest method showThreadBean.

public void showThreadBean() {
    ThreadMXBean tbean = ManagementFactory.getThreadMXBean();
    long[] ids = tbean.getAllThreadIds();
    System.out.println("Thread Count: " + tbean.getThreadCount());
    for (long id : ids) {
        System.out.println("Thread CPU Time(" + id + ")" + tbean.getThreadCpuTime(id));
        System.out.println("Thread User Time(" + id + ")" + tbean.getThreadCpuTime(id));
    }
}

Example 43 with ThreadMXBean

use of java.lang.management.ThreadMXBean in project jdk8u_jdk by JetBrains.

the class JvmThreadingImpl method checkJvmThreadContentionMonitoring.

/**
     * Checker for the "JvmThreadContentionMonitoring" variable.
     */
public void checkJvmThreadContentionMonitoring(EnumJvmThreadContentionMonitoring x) throws SnmpStatusException {
    //Can't be set externaly to unsupported state.
    if (JvmThreadContentionMonitoringUnsupported.intValue() == x.intValue()) {
        log.debug("checkJvmThreadContentionMonitoring", "Try to set to illegal unsupported value");
        throw new SnmpStatusException(SnmpDefinitions.snmpRspWrongValue);
    }
    if ((JvmThreadContentionMonitoringEnabled.intValue() == x.intValue()) || (JvmThreadContentionMonitoringDisabled.intValue() == x.intValue())) {
        // The value is valid, but is the feature supported ?
        ThreadMXBean mbean = getThreadMXBean();
        if (mbean.isThreadContentionMonitoringSupported())
            return;
        log.debug("checkJvmThreadContentionMonitoring", "Unsupported operation, can't set state");
        throw new SnmpStatusException(SnmpDefinitions.snmpRspInconsistentValue);
    }
    log.debug("checkJvmThreadContentionMonitoring", "Try to set to unknown value");
    throw new SnmpStatusException(SnmpDefinitions.snmpRspWrongValue);
}

Example 44 with ThreadMXBean

use of java.lang.management.ThreadMXBean in project jdk8u_jdk by JetBrains.

the class JvmThreadInstanceEntryImpl method getJvmThreadInstBlockTimeMs.

/**
     * Getter for the "JvmThreadInstBlockTimeMs" variable.
     */
public Long getJvmThreadInstBlockTimeMs() throws SnmpStatusException {
    long l = 0;
    final ThreadMXBean tmb = JvmThreadingImpl.getThreadMXBean();
    if (tmb.isThreadContentionMonitoringSupported()) {
        l = info.getBlockedTime();
        //Monitoring is disabled
        if (l == -1)
            l = 0;
    }
    return new Long(l);
}

Example 45 with ThreadMXBean

use of java.lang.management.ThreadMXBean in project jdk8u_jdk by JetBrains.

the class JvmThreadInstanceEntryImpl method getJvmThreadInstCpuTimeNs.

/**
     * Getter for the "JvmThreadInstCpuTimeNs" variable.
     */
public Long getJvmThreadInstCpuTimeNs() throws SnmpStatusException {
    long l = 0;
    final ThreadMXBean tmb = JvmThreadingImpl.getThreadMXBean();
    try {
        if (tmb.isThreadCpuTimeSupported()) {
            l = tmb.getThreadCpuTime(info.getThreadId());
            log.debug("getJvmThreadInstCpuTimeNs", "Cpu time ns : " + l);
            //Cpu time measurement is disabled or the id is not valid.
            if (l == -1)
                l = 0;
        }
    } catch (UnsatisfiedLinkError e) {
        // XXX Revisit: catch TO BE EVENTUALLY REMOVED
        log.debug("getJvmThreadInstCpuTimeNs", "Operation not supported: " + e);
    }
    return new Long(l);
}