java.lang.management.ManagementFactory#getClassLoadingMXBean

Source File: ClassLoadingSampler.java From kieker with Apache License 2.0

5 votes

@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()), };
}

Source File: ClassloadMetrics.java From watcher with Apache License 2.0

5 votes

public Object doMonitor(Map<String, Object> params) {
	Map<String, Object> map = Maps.newHashMap();
	ClassLoadingMXBean mxBean = ManagementFactory.getClassLoadingMXBean();
	map.put("totalLoadedClassCount", mxBean.getTotalLoadedClassCount());
	map.put("loadedClassCount", mxBean.getLoadedClassCount());
	map.put("unloadedClassCount", mxBean.getUnloadedClassCount());
	return map;
}

Source File: JavaInfo.java From haxademic with MIT License

5 votes

public static void printClassLoaderInfo() {
    ClassLoader cl = Thread.currentThread().getContextClassLoader();
    out.println("thread context class loader "+cl.getClass().getName());
    out.println("system class loader "+ClassLoader.getSystemClassLoader().getClass().getName());
    ClassLoadingMXBean cx = ManagementFactory.getClassLoadingMXBean();
    out.println("loaded classes count "+cx.getLoadedClassCount());
}

Source File: SystemMetrics.java From hugegraph with Apache License 2.0

5 votes

private Map<String, Object> getClassLoadingMetrics() {
    Map<String, Object> metrics = new LinkedHashMap<>();
    ClassLoadingMXBean classLoadingMxBean = ManagementFactory
                                            .getClassLoadingMXBean();
    metrics.put("count", classLoadingMxBean.getLoadedClassCount());
    metrics.put("loaded", classLoadingMxBean.getTotalLoadedClassCount());
    metrics.put("unloaded", classLoadingMxBean.getUnloadedClassCount());
    return metrics;
}

Source File: OperatingSystemInfoUtil.java From Deta_Cache with Apache License 2.0

5 votes

/**
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	 */
	public static Map<String, String> showClassLoading(){
		Map<String, String> map = new HashMap<>();
		ClassLoadingMXBean cl = ManagementFactory.getClassLoadingMXBean();
		map.put("TotalLoadedClassCount: ", "" +cl.getTotalLoadedClassCount());
		map.put("LoadedClassCount", "" + cl.getLoadedClassCount());
		map.put("UnloadedClassCount:" , "" + cl.getTotalLoadedClassCount());	
		return map;	
//		System.out.println("TotalLoadedClassCount: " + cl.getTotalLoadedClassCount());
//		System.out.println("LoadedClassCount" + cl.getLoadedClassCount());
//		System.out.println("UnloadedClassCount:" + cl.getUnloadedClassCount());
	}

Source File: SmallRyeMetricsRecorder.java From quarkus with Apache License 2.0

5 votes

private void micrometerJvmClassLoaderMetrics(MetricRegistry registry) {
    // The ClassLoadingMXBean can be used in native mode, but it only returns zeroes, so there's no point in including such metrics.
    if (!ImageInfo.inImageCode()) {
        ClassLoadingMXBean classLoadingBean = ManagementFactory.getClassLoadingMXBean();

        registry.register(
                new ExtendedMetadataBuilder()
                        .withName("jvm.classes.loaded")
                        .withType(MetricType.GAUGE)
                        .withUnit("classes")
                        .withDescription("The number of classes that are currently loaded in the Java virtual machine")
                        .withOpenMetricsKeyOverride("jvm_classes_loaded_classes")
                        .build(),
                new Gauge() {
                    @Override
                    public Number getValue() {
                        return classLoadingBean.getLoadedClassCount();
                    }
                });

        registry.register(
                new ExtendedMetadataBuilder()
                        .withName("jvm.classes.unloaded")
                        .withType(MetricType.COUNTER)
                        .withUnit("classes")
                        .withDescription(
                                "The total number of classes unloaded since the Java virtual machine has started execution")
                        .withOpenMetricsKeyOverride("jvm_classes_unloaded_classes_total")
                        .build(),
                new GetCountOnlyCounter() {
                    @Override
                    public long getCount() {
                        return classLoadingBean.getUnloadedClassCount();
                    }
                });
    }
}

Source File: JvmClassLoadingImpl.java From jdk8u-dev-jdk with GNU General Public License v2.0

4 votes

static ClassLoadingMXBean getClassLoadingMXBean() {
    return ManagementFactory.getClassLoadingMXBean();
}

Source File: TestJmx.java From util4j with Apache License 2.0

4 votes

private void setFactory() {
 mxbean = ManagementFactory.getRuntimeMXBean();
 // 以下是取得虚拟机的属性
 System.out.println("===============虚拟机信息===================");
 System.out.println("虚拟机提供商：" + mxbean.getVmVendor());
 System.out.println("虚拟机名称：" + mxbean.getVmName());
 System.out.println("当前类路径：" + mxbean.getClassPath());
 System.out.println("进程号@机器：" + mxbean.getName());
 System.out.println("运行时间(毫秒)：" + mxbean.getUptime());

 // 类管理接口
 System.out.println("===============类加载信息===================");
 ClassLoadingMXBean aClassLoadingMXBean = ManagementFactory
   .getClassLoadingMXBean();
 System.out.println("已加载类总数："
   + aClassLoadingMXBean.getLoadedClassCount());
 System.out.println("Verbose状态：" + aClassLoadingMXBean.isVerbose());

 // 内存管理接口
 System.out.println("===============内存信息=====================");
 MemoryMXBean aMemoryMXBean = ManagementFactory.getMemoryMXBean();
 System.out.println("终止被挂起数："
   + aMemoryMXBean.getObjectPendingFinalizationCount());// 返回其终止被挂起的对象的近似数目
 // 返回 Java 虚拟机使用的非堆内存的当前使用量
 MemoryUsage aMemoryUsage = aMemoryMXBean.getNonHeapMemoryUsage(); // 虚拟机启动时从系统得到的内存（以字节为单位）
 System.out.println("虚拟机启动时从系统得到的内存:" + aMemoryUsage.getInit()); // 表示当前已经使用的内存量（以字节为单位）
 System.out.println("当前已经使用的内存量:" + aMemoryUsage.getUsed()); // 表示保证可以由
 // Java
 // 虚拟机使用的内存量（以字节为单位）

 System.out.println("虚拟机使用的内存量:" + aMemoryUsage.getCommitted()); // 表示可以用于内存管理的最大内存量（以字节为单位）
 System.out.println("内存管理的初始内存量:" + aMemoryUsage.getInit());
 System.out.println("内存管理的最大内存量:" + aMemoryUsage.getMax());
 System.out.println("总体描述:" + aMemoryUsage.toString());
 
 java.util.List<GarbageCollectorMXBean> aGCMXBeans = ManagementFactory.getGarbageCollectorMXBeans();
 GarbageCollectorMXBean aGCMXBean = aGCMXBeans.get(0);
 System.out.println("===============GC信息=====================");
 System.out.println("收集总数:" + aGCMXBean.getCollectionCount());
 System.out.println("收集时间:" + aGCMXBean.getCollectionTime());
 System.out.println("内存管理器有效:" + aGCMXBean.isValid());
 System.out.println("内存池名:" + aGCMXBean.getMemoryPoolNames()[0]);
 System.out.println("内存池名:" + aGCMXBean.getMemoryPoolNames()[1]);
 
 
 System.out.println("*****************End**********************");
}

Source File: JavaInfoPage.java From scelight with Apache License 2.0

4 votes

@Override
public JComponent createPageComp() {
	final BorderPanel p = new BorderPanel();
	
	final XTable table = new XTable();
	
	final Vector< Vector< Object > > data = new Vector<>();
	
	data.add( Utils.vector( "Java vendor", System.getProperty( "java.vendor" ) ) );
	data.add( Utils.vector( "Java version", System.getProperty( "java.version" ) ) );
	data.add( Utils.vector( "Java home", System.getProperty( "java.home" ) ) );
	data.add( Utils.vector( "Java runtime name", System.getProperty( "java.runtime.name" ) ) );
	data.add( Utils.vector( "Java runtime version", System.getProperty( "java.runtime.version" ) ) );
	data.add( Utils.vector( "Java spec. vendor", System.getProperty( "java.specification.vendor" ) ) );
	data.add( Utils.vector( "Java spec. name", System.getProperty( "java.specification.name" ) ) );
	data.add( Utils.vector( "Java spec. version", System.getProperty( "java.specification.version" ) ) );
	
	final RuntimeMXBean bean = ManagementFactory.getRuntimeMXBean();
	if ( SkillLevel.DEVELOPER.isAtLeast() ) {
		data.add( Utils.vector( "Java VM spec. vendor", bean.getSpecVendor() ) );
		data.add( Utils.vector( "Java VM spec. name", bean.getSpecName() ) );
		data.add( Utils.vector( "Java VM spec. version", bean.getSpecVersion() ) );
		
		data.add( Utils.vector( "Java VM impl. vendor", bean.getVmVendor() ) );
		data.add( Utils.vector( "Java VM impl. name", bean.getVmName() ) );
		data.add( Utils.vector( "Java VM impl. version", bean.getVmVersion() ) );
		
		data.add( Utils.vector( "Java input arguments", bean.getInputArguments() ) );
		
		data.add( Utils.vector( "Boot class path", bean.getBootClassPath() ) );
		data.add( Utils.vector( "Library path", bean.getLibraryPath() ) );
		data.add( Utils.vector( "Class path", bean.getClassPath() ) );
	}
	
	data.add( Utils.vector( "Java start time", new Date( bean.getStartTime() ) ) );
	data.add( Utils.vector( "Java uptime", DurationFormat.AUTO.formatDuration( bean.getUptime() ) ) );
	
	if ( SkillLevel.DEVELOPER.isAtLeast() ) {
		final ClassLoadingMXBean clBean = ManagementFactory.getClassLoadingMXBean();
		data.add( Utils.vector( "Currently loaded classes", clBean.getLoadedClassCount() ) );
		data.add( Utils.vector( "Total loaded classes", clBean.getTotalLoadedClassCount() ) );
		data.add( Utils.vector( "Unloaded classes", clBean.getUnloadedClassCount() ) );
		
		final ThreadMXBean tBean = ManagementFactory.getThreadMXBean();
		data.add( Utils.vector( "Current thread count", tBean.getThreadCount() ) );
		data.add( Utils.vector( "Peak thread count", tBean.getPeakThreadCount() ) );
		data.add( Utils.vector( "Total started thread count", tBean.getTotalStartedThreadCount() ) );
	}
	
	table.getXTableModel().setDataVector( data, Utils.vector( "Property name", "Property value" ) );
	table.packColumnsExceptLast();
	
	p.addCenter( table.createWrapperBox( true, table.createToolBarParams( p ) ) );
	
	return p;
}

Source File: JvmClassLoadingImpl.java From openjdk-8-source with GNU General Public License v2.0

4 votes

static ClassLoadingMXBean getClassLoadingMXBean() {
    return ManagementFactory.getClassLoadingMXBean();
}

Source File: DiagnosticTask.java From netbeans with Apache License 2.0

4 votes

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();
    }

Source File: MetricUtils.java From flink with Apache License 2.0

4 votes

private static void instantiateClassLoaderMetrics(MetricGroup metrics) {
	final ClassLoadingMXBean mxBean = ManagementFactory.getClassLoadingMXBean();
	metrics.<Long, Gauge<Long>>gauge("ClassesLoaded", mxBean::getTotalLoadedClassCount);
	metrics.<Long, Gauge<Long>>gauge("ClassesUnloaded", mxBean::getUnloadedClassCount);
}

Source File: Classes.java From visualvm with GNU General Public License v2.0

4 votes

/** Should be called at earliest possible time */
public static void initialize() {
    classLoadingBean = ManagementFactory.getClassLoadingMXBean();
}

Source File: JvmClassLoadingImpl.java From openjdk-jdk8u with GNU General Public License v2.0

4 votes

static ClassLoadingMXBean getClassLoadingMXBean() {
    return ManagementFactory.getClassLoadingMXBean();
}

Source File: JvmClassLoadingImpl.java From jdk8u-jdk with GNU General Public License v2.0

4 votes

static ClassLoadingMXBean getClassLoadingMXBean() {
    return ManagementFactory.getClassLoadingMXBean();
}

Source File: JvmClassLoadingImpl.java From openjdk-jdk8u-backup with GNU General Public License v2.0

4 votes

static ClassLoadingMXBean getClassLoadingMXBean() {
    return ManagementFactory.getClassLoadingMXBean();
}

Source File: JvmClassLoadingImpl.java From TencentKona-8 with GNU General Public License v2.0

4 votes

static ClassLoadingMXBean getClassLoadingMXBean() {
    return ManagementFactory.getClassLoadingMXBean();
}

Source File: JvmClassLoadingImpl.java From jdk8u-jdk with GNU General Public License v2.0

4 votes

static ClassLoadingMXBean getClassLoadingMXBean() {
    return ManagementFactory.getClassLoadingMXBean();
}

Source File: MetricUtils.java From flink with Apache License 2.0

4 votes

private static void instantiateClassLoaderMetrics(MetricGroup metrics) {
	final ClassLoadingMXBean mxBean = ManagementFactory.getClassLoadingMXBean();
	metrics.<Long, Gauge<Long>>gauge("ClassesLoaded", mxBean::getTotalLoadedClassCount);
	metrics.<Long, Gauge<Long>>gauge("ClassesUnloaded", mxBean::getUnloadedClassCount);
}

Source File: MetricUtils.java From Flink-CEPplus with Apache License 2.0

4 votes

private static void instantiateClassLoaderMetrics(MetricGroup metrics) {
	final ClassLoadingMXBean mxBean = ManagementFactory.getClassLoadingMXBean();
	metrics.<Long, Gauge<Long>>gauge("ClassesLoaded", mxBean::getTotalLoadedClassCount);
	metrics.<Long, Gauge<Long>>gauge("ClassesUnloaded", mxBean::getUnloadedClassCount);
}

Java Code Examples for java.lang.management.ManagementFactory#getClassLoadingMXBean()