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

Example 56 with ThreadMXBean

use of java.lang.management.ThreadMXBean in project ignite by apache.

the class IgniteUtils method dumpThreads.

/**
 * Performs thread dump and prints all available info to the given log.
 *
 * @param log Logger.
 */
public static void dumpThreads(@Nullable IgniteLogger log) {
    ThreadMXBean mxBean = ManagementFactory.getThreadMXBean();
    final Set<Long> deadlockedThreadsIds = getDeadlockedThreadIds(mxBean);
    if (deadlockedThreadsIds.size() == 0)
        warn(log, "No deadlocked threads detected.");
    else
        warn(log, "Deadlocked threads detected (see thread dump below) " + "[deadlockedThreadsCnt=" + deadlockedThreadsIds.size() + ']');
    ThreadInfo[] threadInfos = mxBean.dumpAllThreads(mxBean.isObjectMonitorUsageSupported(), mxBean.isSynchronizerUsageSupported());
    GridStringBuilder sb = new GridStringBuilder("Thread dump at ").a(new SimpleDateFormat("yyyy/MM/dd HH:mm:ss z").format(new Date(U.currentTimeMillis()))).a(NL);
    for (ThreadInfo info : threadInfos) {
        printThreadInfo(info, sb, deadlockedThreadsIds);
        sb.a(NL);
        if (info.getLockedSynchronizers() != null && info.getLockedSynchronizers().length > 0) {
            printSynchronizersInfo(info.getLockedSynchronizers(), sb);
            sb.a(NL);
        }
    }
    sb.a(NL);
    warn(log, sb.toString());
}

Example 57 with ThreadMXBean

use of java.lang.management.ThreadMXBean in project drools by kiegroup.

the class TestStatusListener method writeThreadDump.

private synchronized void writeThreadDump() throws IOException {
    final ThreadMXBean threadMxBean = ManagementFactory.getThreadMXBean();
    for (final ThreadInfo ti : threadMxBean.dumpAllThreads(true, true)) {
        writer.write(ti.toString());
        if (ti.getStackTrace().length > 8) {
            writer.write("full stacktrace:\n");
            writer.write(fullStackTrace(ti));
            writer.write("\n");
        }
    }
    writer.newLine();
    writer.flush();
}

Example 58 with ThreadMXBean

use of java.lang.management.ThreadMXBean in project scheduling by ow2-proactive.

the class TimedOutTestsListener method buildDeadlockInfo.

private static String buildDeadlockInfo() {
    ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
    long[] threadIds = threadBean.findMonitorDeadlockedThreads();
    if (threadIds != null && threadIds.length > 0) {
        StringBuilder sb = new StringBuilder();
        ThreadInfo[] infos = threadBean.getThreadInfo(threadIds, true, true);
        for (ThreadInfo ti : infos) {
            printThreadInfo(ti, sb);
            printLockInfo(ti.getLockedSynchronizers(), sb);
            sb.append(System.getProperty("line.separator"));
        }
        return sb.toString();
    } else {
        return null;
    }
}

Example 59 with ThreadMXBean

use of java.lang.management.ThreadMXBean in project Payara by payara.

the class HoggingThreadsHealthCheck method doCheck.

@Override
public HealthCheckResult doCheck() {
    if (!getOptions().isEnabled()) {
        return null;
    }
    HealthCheckResult result = new HealthCheckResult();
    ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
    if (!threadBean.isCurrentThreadCpuTimeSupported()) {
        result.add(new HealthCheckResultEntry(HealthCheckResultStatus.CHECK_ERROR, "JVM implementation or OS does" + " not support getting CPU times"));
        return result;
    }
    final long[] ids = threadBean.getAllThreadIds();
    for (long id : ids) {
        if (id == Thread.currentThread().getId())
            continue;
        final long c = threadBean.getThreadCpuTime(id);
        final long u = threadBean.getThreadUserTime(id);
        ThreadInfo threadInfo = threadBean.getThreadInfo(id);
        if (c == -1 || u == -1)
            continue;
        ThreadTimes times = threadTimes.get(id);
        if (times == null) {
            times = new ThreadTimes();
            times.setId(id);
            times.setName(threadInfo.getThreadName());
            times.setStartCpuTime(c);
            times.setEndCpuTime(c);
            times.setStartUserTime(u);
            times.setEndUserTime(u);
            threadTimes.put(id, times);
        } else {
            times.setStartCpuTime(times.getEndCpuTime());
            times.setStartUserTime(times.getEndUserTime());
            times.setEndCpuTime(c);
            times.setEndUserTime(u);
            long checkTime = getOptions().getUnit().toMillis(getOptions().getTime());
            long duration = times.getEndCpuTime() - times.getStartCpuTime();
            double percentage = ((double) (TimeUnit.NANOSECONDS.toMillis(duration)) / (double) (checkTime)) * 100;
            if (percentage > options.getThresholdPercentage()) {
                if (times.getRetryCount() == 0) {
                    times.setInitialStartCpuTime(System.nanoTime());
                    times.setInitialStartUserTime(System.nanoTime());
                }
                if (times.getRetryCount() >= options.getRetryCount()) {
                    result.add(new HealthCheckResultEntry(HealthCheckResultStatus.CRITICAL, "Thread with <id-name>: " + id + "-" + times.getName() + " is a hogging thread for the last " + prettyPrintDuration(TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - times.getInitialStartCpuTime())) + "\n" + prettyPrintStackTrace(threadInfo.getStackTrace())));
                }
                times.setRetryCount(times.getRetryCount() + 1);
            }
        }
    }
    return result;
}

Example 60 with ThreadMXBean

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

the class JvmThreadingImpl method checkJvmThreadCpuTimeMonitoring.

/**
     * Checker for the "JvmThreadCpuTimeMonitoring" variable.
     */
public void checkJvmThreadCpuTimeMonitoring(EnumJvmThreadCpuTimeMonitoring x) throws SnmpStatusException {
    //Can't be set externaly to unsupported state.
    if (JvmThreadCpuTimeMonitoringUnsupported.intValue() == x.intValue()) {
        log.debug("checkJvmThreadCpuTimeMonitoring", "Try to set to illegal unsupported value");
        throw new SnmpStatusException(SnmpDefinitions.snmpRspWrongValue);
    }
    if ((JvmThreadCpuTimeMonitoringEnabled.intValue() == x.intValue()) || (JvmThreadCpuTimeMonitoringDisabled.intValue() == x.intValue())) {
        // The value is a valid value. But is the feature supported?
        ThreadMXBean mbean = getThreadMXBean();
        if (mbean.isThreadCpuTimeSupported())
            return;
        // Not supported.
        log.debug("checkJvmThreadCpuTimeMonitoring", "Unsupported operation, can't set state");
        throw new SnmpStatusException(SnmpDefinitions.snmpRspInconsistentValue);
    }
    // Unknown value.
    log.debug("checkJvmThreadCpuTimeMonitoring", "unknown enum value ");
    throw new SnmpStatusException(SnmpDefinitions.snmpRspWrongValue);
}