Example usage for java.lang.management ThreadMXBean setThreadContentionMonitoringEnabled

Introduction

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

Prototype

public void setThreadContentionMonitoringEnabled(boolean enable);

Source Link

Document

Enables or disables thread contention monitoring.

Usage

From source file:io.pcp.parfait.benchmark.CPUThreadTest.java

private void runBenchmark(boolean cpuTracingEnabled, CPUThreadTestRunner.CpuLookupMethod cpuLookupMethod) {
    ExecutorService executorService = Executors.newFixedThreadPool(numThreads);
    List<CPUThreadTestRunner> executions = newArrayList();

    ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
    threadBean.setThreadCpuTimeEnabled(cpuTracingEnabled);

    threadBean.setThreadContentionMonitoringEnabled(true);

    long begin = currentTimeMillis();

    for (int i = 0; i < numThreads; i++) {
        CPUThreadTestRunner cpuThreadTestRunner = new CPUThreadTestRunner(iterations, cpuLookupMethod);
        executorService.execute(cpuThreadTestRunner);
        executions.add(cpuThreadTestRunner);
    }/*from   w w  w .java 2 s. c o  m*/

    awaitExecutionCompletion(executorService);

    long end = currentTimeMillis();
    long timeTakenms = end - begin;

    report(executions, timeTakenms, iterations, cpuTracingEnabled, cpuLookupMethod);
}

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From source file:com.google.dart.tools.core.DartCore.java

@Override
public void start(BundleContext context) throws Exception {
    super.start(context);

    CmdLineOptions.setOptions(CmdLineOptions.parseCmdLine(Platform.getApplicationArgs()));
    CmdLineOptions.getOptions().printWarnings();

    if (DartCoreDebug.PERF_THREAD_CONTENTION_MONIOR) {
        try {/*from w w w.  j a  v  a  2  s  .  c  o m*/
            java.lang.management.ThreadMXBean th = ManagementFactory.getThreadMXBean();
            th.setThreadContentionMonitoringEnabled(true);
        } catch (UnsupportedOperationException e) {
        }
    }

    AnalysisEngine analysisEngine = AnalysisEngine.getInstance();
    analysisEngine.setLogger(new Logger() {
        @Override
        public void logError(String message) {
            DartCore.logError(message);
        }

        @Override
        public void logError(String message, Throwable exception) {
            DartCore.logError(message, exception);
        }

        @Override
        public void logInformation(String message) {
            DartCore.logInformation(message);
        }

        @Override
        public void logInformation(String message, Throwable exception) {
            DartCore.logInformation(message, exception);
        }
    });
    Logging.setLogger(new com.google.dart.server.utilities.logging.Logger() {
        @Override
        public void logError(String message) {
            DartCore.logError(message);
        }

        @Override
        public void logError(String message, Throwable exception) {
            DartCore.logError(message, exception);
        }

        @Override
        public void logInformation(String message) {
            DartCore.logInformation(message);
        }

        @Override
        public void logInformation(String message, Throwable exception) {
            DartCore.logInformation(message, exception);
        }
    });

    DartSdkManager.getManager().addSdkListener(this);
    if (!DartCoreDebug.ENABLE_ANALYSIS_SERVER) {
        getProjectManager().hookListeners();
    } else {
        getAnalysisServer();
    }
}

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