Example usage for java.lang Runtime freeMemory

Introduction

In this page you can find the example usage for java.lang Runtime freeMemory.

Prototype

public native long freeMemory();

Source Link

Document

Returns the amount of free memory in the Java Virtual Machine.

Usage

From source file:com.appdynamicspilot.action.MemoryLeakAction.java

private void populateResult() {
    Runtime runtime = Runtime.getRuntime();
    long freeMemory = runtime.freeMemory();
    long totalMemory = runtime.totalMemory();
    double freePercent = ((double) freeMemory / (double) totalMemory) * 100;
    this.request.setAttribute("freeMem", freeMemory);
    this.request.setAttribute("totalMem", totalMemory);
    this.request.setAttribute("freePercent", freePercent);
    this.request.setAttribute("inUsedPercent", (100d - freePercent));

    MemoryLeakService memoryLeakService = MemoryLeakService.instance;
    this.request.setAttribute("objectCount", memoryLeakService.getSize());
}

From source file:org.tdod.ether.taimpl.engine.jobs.StatisticsJob.java

/**
 * Runs the job./*from   w ww .j  a  v  a 2 s. c o  m*/
 * @param context the JobExecutionContext.
 */
public void execute(JobExecutionContext context) {
    Runtime runtime = Runtime.getRuntime();
    long usedMemory = runtime.totalMemory() - runtime.freeMemory();

    _log.info("Used Memory: " + usedMemory + ", Rooms: " + WorldManager.getArea().getRoomMap().size()
            + ", Mobs: " + WorldManager.getMobsInExistance().size() + ", Items: "
            + WorldManager.getItemsInExistance().size() + ", Players: " + WorldManager.getPlayers().size());
}

From source file:ShowProperties.java

public void startApp() throws MIDletStateChangeException {
    System.out.println("Vendor: " + getAppProperty("MIDlet-Vendor"));
    System.out.println("Description: " + getAppProperty("MIDlet-Description"));
    System.out.println("JadFile Version: " + getAppProperty("JadFile-Version"));
    System.out.println("MIDlet-Data-Size: " + getAppProperty("MIDlet-Data-Size"));

    Runtime rtime = Runtime.getRuntime();
    System.out.println("Total memory: " + rtime.totalMemory());
    System.out.println("Free memory: " + rtime.freeMemory());
}

From source file:com.liferay.portal.events.LogMemoryUsageAction.java

public void run(HttpServletRequest req, HttpServletResponse res) throws ActionException {

    Runtime runtime = Runtime.getRuntime();

    NumberFormat nf = NumberFormat.getInstance();

    String freeMemory = nf.format(runtime.freeMemory());
    String totalMemory = nf.format(runtime.totalMemory());
    String maxMemory = nf.format(runtime.maxMemory());

    _log.debug("Memory Usage:\t" + freeMemory + "\t" + totalMemory + "\t" + maxMemory);
}

From source file:edu.umn.cs.spatialHadoop.util.MemoryReporter.java

@Override
public void run() {
    Runtime runtime = Runtime.getRuntime();
    while (true) {
        LOG.info(String.format("Free memory %s / Total memory %s", humanReadable(runtime.freeMemory()),
                humanReadable(runtime.totalMemory())));
        try {//  w w  w .  j a v  a2s .com
            Thread.sleep(1000 * 60);
        } catch (InterruptedException e) {
        }
    }
}

From source file:fr.inria.atlanmod.neoemf.benchmarks.query.Query.java

default V callWithMemoryUsage() throws Exception {
    V result;/*w w w .  jav a  2  s  . c  o  m*/

    Runtime runtime = Runtime.getRuntime();

    runtime.gc();
    long initialUsedMemory = runtime.totalMemory() - runtime.freeMemory();
    log.info("Used memory before call: {}", FileUtils.byteCountToDisplaySize(initialUsedMemory));

    result = callWithTime();

    runtime.gc();
    long finalUsedMemory = runtime.totalMemory() - runtime.freeMemory();
    log.info("Used memory after call: {}", FileUtils.byteCountToDisplaySize(finalUsedMemory));
    log.info("Memory use increase: {}", FileUtils.byteCountToDisplaySize(finalUsedMemory - initialUsedMemory));

    return result;
}

From source file:MIDletProps.java

/**
 * Show the value of the properties/*from ww  w.j  av a2 s .  c om*/
 */
public void startApp() {
    Runtime runtime = Runtime.getRuntime();
    runtime.gc();
    long free = runtime.freeMemory();
    long total = runtime.totalMemory();

    propbuf = new StringBuffer(50);
    props = new Form("System Properties");

    props.append("Free Memory = " + free + "\n");
    props.append("Total Memory = " + total + "\n");

    props.append(showProp("microedition.configuration"));
    props.append(showProp("microedition.platform"));
    props.append(showProp("microedition.locale"));
    props.append(showProp("microedition.encoding"));
    props.append(showProp("microedition.encodingClass"));
    props.append(showProp("microedition.http_proxy"));

    props.addCommand(exitCommand);
    props.setCommandListener(this);

    display.setCurrent(props);

}

From source file:com.liferay.portal.events.GarbageCollectorAction.java

public void run(HttpSession ses) throws ActionException {

    try {//from  w  ww . j a va  2 s .co m
        Runtime runtime = Runtime.getRuntime();

        NumberFormat nf = NumberFormat.getInstance();

        _log.debug("Before GC: " + nf.format(runtime.freeMemory()) + " free, "
                + nf.format(runtime.totalMemory()) + " total, and " + nf.format(runtime.maxMemory()) + " max");

        _log.debug("Running garbage collector");

        System.gc();

        _log.debug("After GC: " + nf.format(runtime.freeMemory()) + " free, " + nf.format(runtime.totalMemory())
                + " total, and " + nf.format(runtime.maxMemory()) + " max");
    } catch (Exception e) {
        throw new ActionException(e);
    }
}

From source file:org.mule.transport.tcp.integration.BigInputStream.java

public int read() throws IOException {
    if (sent == size) {
        return -1;
    } else {//w w  w  . j  a v a 2 s .c  o m
        if (++sent > nextMessage) {
            double percent = 100l * sent / ((double) size);
            Runtime runtime = Runtime.getRuntime();
            logger.info(FORMAT.format(new Object[] { new Long(sent), new Double(percent),
                    new Long(runtime.freeMemory()), new Long(runtime.maxMemory()) }));
            nextMessage = ++printedMessages * ((int) Math.floor(((double) size) / (messages - 1)) - 1);
        }
        if (dataIndex == data.length) {
            dataIndex = 0;
        }
        return data[dataIndex++];
    }
}

From source file:org.b3log.symphony.processor.StatusProcessor.java

/**
 * Reports running status.//  ww  w  .  ja va  2s .  co m
 *
 * @param context the specified context
 * @param request the specified request
 * @param response the specified response
 * @throws Exception exception
 */
@RequestProcessing(value = "/status", method = HTTPRequestMethod.GET)
public void reportStatus(final HTTPRequestContext context, final HttpServletRequest request,
        final HttpServletResponse response) throws Exception {
    final String key = Symphonys.get("keyOfSymphony");
    if (!key.equals(request.getParameter("key"))) {
        response.sendError(HttpServletResponse.SC_FORBIDDEN);

        return;
    }

    final JSONObject ret = new JSONObject();

    context.renderJSON(ret);

    ret.put(Common.ONLINE_VISITOR_CNT, optionQueryService.getOnlineVisitorCount());
    ret.put(Common.ARTICLE_CHANNEL_CNT, ArticleChannel.SESSIONS.size());
    ret.put(Common.ARTICLE_LIST_CHANNEL_CNT, ArticleListChannel.SESSIONS.size());

    final JSONObject memory = new JSONObject();
    ret.put("memory", memory);

    final int mb = 1024 * 1024;
    final Runtime runtime = Runtime.getRuntime();
    memory.put("totoal", runtime.totalMemory() / mb);
    memory.put("free", runtime.freeMemory() / mb);
    memory.put("used", (runtime.totalMemory() - runtime.freeMemory()) / mb);
    memory.put("max", runtime.maxMemory() / mb);

    LOGGER.info(ret.toString(SymphonyServletListener.JSON_PRINT_INDENT_FACTOR));
    ret.put(Keys.STATUS_CODE, true);
}