java.lang.management.ClassLoadingMXBean#getTotalLoadedClassCount ( )源码实例Demo

@Override
protected IMonitoringRecord[] createNewMonitoringRecords(final long timestamp, final String hostname, final String vmName,
		final IMonitoringController monitoringCtr) {
	if (!monitoringCtr.isProbeActivated(SignatureFactory.createJVMClassLoadSignature())) {
		return new IMonitoringRecord[] {};
	}

	final ClassLoadingMXBean classLoadingBean = ManagementFactory.getClassLoadingMXBean();
	return new IMonitoringRecord[] { new ClassLoadingRecord(timestamp, hostname, vmName, classLoadingBean.getTotalLoadedClassCount(),
			classLoadingBean.getLoadedClassCount(), classLoadingBean.getUnloadedClassCount()), };
}
 

private String logParams() {
        StringBuilder sb = new StringBuilder(500);
        sb.append("Diagnostic information\n");
        try {
            RuntimeMXBean         rmBean     = ManagementFactory.getRuntimeMXBean();
            CompilationMXBean     cmpMBean   = ManagementFactory.getCompilationMXBean();
//            ThreadMXBean          tmBean     = ManagementFactory.getThreadMXBean();
            MemoryMXBean          memoryBean = ManagementFactory.getMemoryMXBean();
            ClassLoadingMXBean    clMBean    = ManagementFactory.getClassLoadingMXBean();

//            MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
//            ObjectName hsDiag = new ObjectName("com.sun.management:name=HotSpotDiagnostic");
//            com.sun.management.OperatingSystemMXBean sunOSMBean  =
//               ManagementFactory.getSunOperatingSystemMXBean();

//            Map<String, String> props = new TreeMap<String, String>(rmBean.getSystemProperties());
//            System.out.println("System properties");
//            for (Map.Entry<String, String> entry: props.entrySet()) {
//                System.out.println("Property: "+entry.getKey()+" Value: "+entry.getValue());
//            }
            sb.append("Input arguments:");
            for (String s: rmBean.getInputArguments()) {
                sb.append("\n\t").append(s);
            }
            
            if (cmpMBean != null) {
                sb.append("\nCompiler: "+cmpMBean.getName()).append('\n');
            }
            
            // Memory
            MemoryUsage usage = memoryBean.getHeapMemoryUsage();
            logMemoryUsage(sb, usage, "Heap memory");
            usage = memoryBean.getNonHeapMemoryUsage();
            logMemoryUsage(sb, usage, "Non heap memory");
            for (GarbageCollectorMXBean gcMBean: ManagementFactory.getGarbageCollectorMXBeans()) {
                sb.append("Garbage collector: ").append(gcMBean.getName())
                        .append(" (Collections=").append(gcMBean.getCollectionCount())
                        .append(" Total time spent=").append(formatTime(gcMBean.getCollectionTime()))
                        .append(")\n");
            }
            
            // classes
            int clsLoaded;
            long clsTotal, clsUnloaded;
            clsLoaded = clMBean.getLoadedClassCount();
            clsTotal = clMBean.getTotalLoadedClassCount();
            clsUnloaded = clMBean.getUnloadedClassCount();
            sb.append("Classes: loaded=").append(clsLoaded)
                    .append(" total loaded=").append(clsTotal)
                    .append(" unloaded ").append(clsUnloaded).append('\n');

//        } catch (MalformedObjectNameException ex) {
//            Logger.getLogger("global").log(Level.WARNING, null, ex);
        } catch (NullPointerException ex) {
            LOG.log(Level.WARNING, null, ex);
        }
        return sb.toString();
    }
 

/**
 * This method writes the data retrieved from the ClassLoading and
 * Compilation MXBeans to the ClassData's log using the MXBeans directly or
 * through a proxy.
 * 
 * @param clb
 *            The ClassLoading MXBean used to retrieve information about
 *            loaded classes.
 * @param cb
 *            The Compilation MXBean used to retrieve compilation
 *            information.
 * @param rb
 *            The Runtime MXBean used to retrieve general information about
 *            the runtime used.
 * @param append
 *            If the append value is true the data is appended to the log,
 *            otherwise the log is overwritten.
 */
public void writeData(ClassLoadingMXBean clb, CompilationMXBean cb, RuntimeMXBean rb, boolean append)
		throws UndeclaredThrowableException {
	if ((clb == null)) {
		Assert.fail("ClassLoadingMXBean is null");
	}

	openLogFile(append);
	DecimalFormat df = new DecimalFormat("#0.00"); // Print out all times to 2 d.p.

	try {
		// Record the time and whether the verbose output is enabled
		out.println("Class Loading and Compilation Information Retrieved at "
				+ DateFormat.getDateTimeInstance().format(new Date()));
		out.println("");

		// Get stats for the class loader, check the values and write them to a file
		int load_cls_cnt = clb.getLoadedClassCount();
		long unload_cls_cnt = clb.getUnloadedClassCount();
		long total_cls_cnt = clb.getTotalLoadedClassCount();

		// Check the class counts are valid
		checkClassCounts("proxy", load_cls_cnt, unload_cls_cnt, total_cls_cnt);

		// Print the results to the log
		out.println("CLASS LOADING STATS");
		out.println("  Current Loaded Class Count:  " + load_cls_cnt);
		out.println("  Total Unloaded Class Count:  " + unload_cls_cnt);
		out.println("  Total Loaded Class Count:    " + total_cls_cnt);
		out.print("  Verbose output enabled:      ");

		if (clb.isVerbose()) {
			out.println("Yes");
		} else {
			out.println("No");
		}
		out.println("");
		out.println("");

		// If there is a compiler get the info
		Map<String, String> props = rb.getSystemProperties();
		String sys_comp = props.get("java.compiler");

		if ((sys_comp != null) && (!(sys_comp.equals("")))) {
			// Get the info for the compiler and write to file
			out.println("COMPILER INFORMATION");

			String mxbean_comp = cb.getName();

			// Check if the compiler matches the compiler specified in the system properties
			checkCompiler("proxy", sys_comp, mxbean_comp);
			out.println("  Just-in-time (JIT) compiler: " + mxbean_comp);

			if (cb.isCompilationTimeMonitoringSupported()) {
				out.println("  Total Compilation Time:      " + df.format(cb.getTotalCompilationTime() * 1e-3)
				+ " seconds"); // Convert milliseconds to seconds
			}
			out.println("");
			out.println("");
		}
		closeLogFile();
	} catch (UnsupportedOperationException uoe) {
		Message.logOut("One of the operations you tried is not supported");
		uoe.printStackTrace();
		Assert.fail("One of the operations you tried is not supported");
	}
}
 

public void run() {

        TelemetryDataDto telemetryDataDto = new TelemetryDataDto();

        telemetryDataDto.time = System.currentTimeMillis();

        Runtime runtime = Runtime.getRuntime();

        telemetryDataDto.freeMemory = runtime.freeMemory();
        telemetryDataDto.maxMemory = runtime.maxMemory();
        telemetryDataDto.totalMemory = runtime.totalMemory();

        ClassLoadingMXBean classLoadingMXBean = ManagementFactory.getClassLoadingMXBean();

        telemetryDataDto.loadedClassCount = classLoadingMXBean.getLoadedClassCount();
        telemetryDataDto.classCount = classLoadingMXBean.getTotalLoadedClassCount();
        telemetryDataDto.unloadedClassCount = classLoadingMXBean.getUnloadedClassCount();

        CompilationMXBean compilationMXBean = ManagementFactory.getCompilationMXBean();

        telemetryDataDto.totalCompilationTime = compilationMXBean.getTotalCompilationTime();

        if (null != profiler)
            profiler.sendMessage(new TelemetryDataMessage(telemetryDataDto));

    }