Example usage for java.lang.management ManagementFactory getMemoryMXBean

Introduction

In this page you can find the example usage for java.lang.management ManagementFactory getMemoryMXBean.

Prototype

public static MemoryMXBean getMemoryMXBean()

Source Link

Document

Returns the managed bean for the memory system of the Java virtual machine.

Usage

From source file:MemoryUtil.java

private static MemoryMXBean getMemoryMXBean() {
    return ManagementFactory.getMemoryMXBean();
}

From source file:it.geosolutions.geobatch.ui.mvc.MemoryController.java

@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
        throws Exception {
    ModelAndView mav = new ModelAndView("memory"); // jsp
    final MemoryMXBean mmxbean = ManagementFactory.getMemoryMXBean();
    mav.addObject("objectPendingFinalizationCount", mmxbean.getObjectPendingFinalizationCount());
    mav.addObject("nonHeapMemoryUsage", mmxbean.getNonHeapMemoryUsage());
    mav.addObject("heapMemoryUsage", mmxbean.getHeapMemoryUsage());
    mav.addObject("memoryPoolBeansList", ManagementFactory.getMemoryPoolMXBeans());

    return mav;/*from ww  w. ja va  2s. c om*/
}

From source file:com.gopivotal.cloudfoundry.test.core.MemoryUtils.java

/**
 * Creates an instance of the utility
 */
public MemoryUtils() {
    this(System.getenv(), ManagementFactory.getMemoryMXBean().getHeapMemoryUsage().getMax());
}

From source file:com.thoughtworks.go.server.service.support.ServerRuntimeInformationProvider.java

@Override
public void appendInformation(InformationStringBuilder infoCollector) {
    osInfo(ManagementFactory.getOperatingSystemMXBean(), infoCollector);
    runtimeInfo(ManagementFactory.getRuntimeMXBean(), infoCollector);
    gcInfo(ManagementFactory.getGarbageCollectorMXBeans(), infoCollector);
    memoryInfo(ManagementFactory.getMemoryMXBean(), infoCollector);
    poolInfo(infoCollector);/*  w ww.ja  v  a  2s  . co  m*/
    threadInfo(ManagementFactory.getThreadMXBean(), infoCollector);
}

From source file:ee.ria.xroad.common.util.SystemMetrics.java

/**
 * Initializes system metrics internals.
 *///from  w w  w  . j a  v  a 2  s . c  o m
public static void init() {
    OperatingSystemMXBean osStatsBean = ManagementFactory.getOperatingSystemMXBean();
    if (osStatsBean instanceof UnixOperatingSystemMXBean) {
        stats = ((UnixOperatingSystemMXBean) osStatsBean);
    } else {
        throw new RuntimeException("Unexpected OperatingSystemMXBean " + osStatsBean);
    }
    memoryStats = ManagementFactory.getMemoryMXBean();
}

From source file:com.chinamobile.bcbsp.comm.io.util.MemoryAllocator.java

/** Refresh memory status with current JVM status. */
private void refreshMemoryStatus() {
    MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
    MemoryUsage memoryUsage = memoryMXBean.getHeapMemoryUsage();
    used = memoryUsage.getUsed();/*from   w w  w .ja  v a 2s  .com*/
    committed = memoryUsage.getCommitted();
    maxHeapSize = memoryUsage.getMax();
    remain = maxHeapSize - used;
}

From source file:com.chinamobile.bcbsp.comm.io.util.MemoryAllocator.java

/** Show the information of memory used. */
public void PrintMemoryInfo(Log LOG) {
    MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
    MemoryUsage memoryUsage = memoryMXBean.getHeapMemoryUsage();
    long usedNow = memoryUsage.getUsed();
    long committedNow = memoryUsage.getCommitted();
    long maxHeapSizeNow = memoryUsage.getMax();
    long remainNow = maxHeapSize - used;
    LOG.info("Memory Usage **********************************************");
    LOG.info("Memory  Max ****************** " + maxHeapSizeNow);
    LOG.info("Memory Commit **************** " + committedNow + "-----Percents: "
            + committedNow * 1.0f / maxHeapSizeNow);
    LOG.info("Memory Used ****************** " + usedNow + "-----Percents: " + usedNow * 1.0f / maxHeapSizeNow);
    LOG.info("Memory Remain **************** " + remainNow + "-----Percents: "
            + remainNow * 1.0f / maxHeapSizeNow);
}

From source file:it.damore.tomee.envmonitor.services.EnvMonitorService.java

@GET
@Path("monitor")
@Produces({ MediaType.APPLICATION_JSON })
public EnvironmentConfig getEnvConfig() throws IllegalAccessException, InvocationTargetException {
    logger.info("received a request...");

    int mb = 1024 * 1024;
    //Getting the runtime reference from system
    Runtime runtime = Runtime.getRuntime();

    EnvironmentConfig b = new EnvironmentConfig();
    b.setMaxMemory(runtime.maxMemory() / mb);
    b.setFreeMemory(runtime.freeMemory() / mb);
    b.setTotalMemory(runtime.totalMemory() / mb);
    b.setSystemProperties(System.getProperties());

    RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
    LocalRuntimeMXBean myRuntimeMXBean = new LocalRuntimeMXBean();
    BeanUtils.copyProperties(myRuntimeMXBean, runtimeMXBean);
    b.setRuntimeMXBean(myRuntimeMXBean);

    MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
    LocalMemoryMXBean myMemoryMXBean = new LocalMemoryMXBean();
    myMemoryMXBean.setHeapMemoryUsage(memoryMXBean.getHeapMemoryUsage());
    myMemoryMXBean.setNonHeapMemoryUsage(memoryMXBean.getNonHeapMemoryUsage());
    myMemoryMXBean.setObjectPendingFinalizationCount(memoryMXBean.getObjectPendingFinalizationCount());
    b.setMemoryMXBean(myMemoryMXBean);//w w  w  .  j av a 2s. c om

    OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();
    LocalOperatingSystemMXBean myOperatingSystemMXBean = new LocalOperatingSystemMXBean();
    BeanUtils.copyProperties(myOperatingSystemMXBean, operatingSystemMXBean);
    b.setOperatingSystemMXBean(myOperatingSystemMXBean);

    return b;
}

From source file:com.adeptj.runtime.servlet.ToolsServlet.java

/**
 * Renders tools page.//from   w ww  .j  av  a 2 s  . c  o m
 */
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) {
    Bundle[] bundles = BundleContextHolder.getInstance().getBundleContext().getBundles();
    long startTime = ManagementFactory.getRuntimeMXBean().getStartTime();
    MemoryUsage memoryUsage = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
    TemplateEngine.getInstance()
            .render(TemplateContext.builder().request(req).response(resp).template(TOOLS_TEMPLATE)
                    .locale(req.getLocale())
                    .templateData(TemplateData.newTemplateData().put("username", req.getRemoteUser())
                            .put("sysProps", System.getProperties().entrySet())
                            .put("totalBundles", bundles.length).put("bundles", bundles)
                            .put("runtime", JAVA_RUNTIME_NAME + "(build " + JAVA_RUNTIME_VERSION + ")")
                            .put("jvm", JAVA_VM_NAME + "(build " + JAVA_VM_VERSION + ", " + JAVA_VM_INFO + ")")
                            .put("startTime", Date.from(Instant.ofEpochMilli(startTime)))
                            .put("upTime", Times.format(startTime))
                            .put("maxMemory", FileUtils.byteCountToDisplaySize(memoryUsage.getMax()))
                            .put("usedMemory", FileUtils.byteCountToDisplaySize(memoryUsage.getUsed()))
                            .put("processors", Runtime.getRuntime().availableProcessors()))
                    .build());
}

From source file:io.adeptj.runtime.servlet.ToolsServlet.java

/**
 * Renders tools page.//  w w  w .  j av a2 s . c  om
 */
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) {
    Bundle[] bundles = BundleContextHolder.getInstance().getBundleContext().getBundles();
    long startTime = ManagementFactory.getRuntimeMXBean().getStartTime();
    MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
    TemplateEngines.getDefault().render(TemplateContext.builder().request(req).response(resp)
            .template(TOOLS_TEMPLATE).locale(req.getLocale())
            .contextObject(ContextObject.newContextObject().put("username", req.getRemoteUser())
                    .put("sysProps", System.getProperties().entrySet()).put("totalBundles", bundles.length)
                    .put("bundles", bundles)
                    .put("runtime", JAVA_RUNTIME_NAME + "(build " + JAVA_RUNTIME_VERSION + ")")
                    .put("jvm", JAVA_VM_NAME + "(build " + JAVA_VM_VERSION + ", " + JAVA_VM_INFO + ")")
                    .put("startTime", Date.from(Instant.ofEpochMilli(startTime)))
                    .put("upTime", Times.format(startTime))
                    .put("maxMemory",
                            FileUtils.byteCountToDisplaySize(memoryMXBean.getHeapMemoryUsage().getMax()))
                    .put("usedMemory",
                            FileUtils.byteCountToDisplaySize(memoryMXBean.getHeapMemoryUsage().getUsed()))
                    .put("processors", Runtime.getRuntime().availableProcessors()))
            .build());
}