Examples with MemoryPoolMXBean java.lang.management.MemoryPoolMXBean used on opensource projects

Example 66 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project felix by apache.

the class MemoryUsageSupport method setThreshold.

/**
 * Sets the threshold percentage.
 *
 * @param percentage The threshold as a percentage of memory consumption.
 *            This value may be 0 (zero) to switch off automatic heap dumps
 *            or in the range {@link #MIN_DUMP_THRESHOLD} to
 *            {@link #MAX_DUMP_THRESHOLD}. If set to a negative value,
 *            the default threshold is assumed.
 * @throws IllegalArgumentException if the percentage value is outside of
 *             the valid range of thresholds. The message is the percentage
 *             value which is not accepted.
 */
final void setThreshold(int percentage) {
    if (percentage < 0) {
        percentage = defaultThreshold;
    }
    if (MemoryUsageConstants.isThresholdValid(percentage)) {
        TreeSet<String> thresholdPools = new TreeSet<String>();
        TreeSet<String> noThresholdPools = new TreeSet<String>();
        List<MemoryPoolMXBean> pools = getMemoryPools();
        for (MemoryPoolMXBean pool : pools) {
            if (pool.isUsageThresholdSupported()) {
                long threshold = pool.getUsage().getMax() * percentage / 100;
                pool.setUsageThreshold(threshold);
                thresholdPools.add(pool.getName());
            } else {
                noThresholdPools.add(pool.getName());
            }
        }
        this.threshold = percentage;
        log(LogService.LOG_INFO, "Setting Automatic Memory Dump Threshold to %d%% for pools %s", threshold, thresholdPools);
        log(LogService.LOG_INFO, "Automatic Memory Dump cannot be set for pools %s", noThresholdPools);
    } else {
        throw new IllegalArgumentException(String.valueOf(percentage));
    }
}

Example 67 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project Lucee by lucee.

the class MacAddressWrap method getMemoryUsageAsQuery.

public static Query getMemoryUsageAsQuery(int type) throws DatabaseException {
    java.util.List<MemoryPoolMXBean> manager = ManagementFactory.getMemoryPoolMXBeans();
    Iterator<MemoryPoolMXBean> it = manager.iterator();
    Query qry = new QueryImpl(new Collection.Key[] { KeyConstants._name, KeyConstants._type, KeyConstants._used, KeyConstants._max, KeyConstants._init }, 0, "memory");
    int row = 0;
    MemoryPoolMXBean bean;
    MemoryUsage usage;
    MemoryType _type;
    while (it.hasNext()) {
        bean = it.next();
        usage = bean.getUsage();
        _type = bean.getType();
        if (type == MEMORY_TYPE_HEAP && _type != MemoryType.HEAP)
            continue;
        if (type == MEMORY_TYPE_NON_HEAP && _type != MemoryType.NON_HEAP)
            continue;
        row++;
        qry.addRow();
        qry.setAtEL(KeyConstants._name, row, bean.getName());
        qry.setAtEL(KeyConstants._type, row, _type.name());
        qry.setAtEL(KeyConstants._max, row, Caster.toDouble(usage.getMax()));
        qry.setAtEL(KeyConstants._used, row, Caster.toDouble(usage.getUsed()));
        qry.setAtEL(KeyConstants._init, row, Caster.toDouble(usage.getInit()));
    }
    return qry;
}

Example 68 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project Lucee by lucee.

the class MacAddressWrap method getPermGenSpaceBean.

public static MemoryPoolMXBean getPermGenSpaceBean() {
    java.util.List<MemoryPoolMXBean> manager = ManagementFactory.getMemoryPoolMXBeans();
    MemoryPoolMXBean bean;
    // PERM GEN
    Iterator<MemoryPoolMXBean> it = manager.iterator();
    while (it.hasNext()) {
        bean = it.next();
        if ("Perm Gen".equalsIgnoreCase(bean.getName()) || "CMS Perm Gen".equalsIgnoreCase(bean.getName())) {
            return bean;
        }
    }
    it = manager.iterator();
    while (it.hasNext()) {
        bean = it.next();
        if (StringUtil.indexOfIgnoreCase(bean.getName(), "Perm Gen") != -1 || StringUtil.indexOfIgnoreCase(bean.getName(), "PermGen") != -1) {
            return bean;
        }
    }
    // take none-heap when only one
    it = manager.iterator();
    LinkedList<MemoryPoolMXBean> beans = new LinkedList<MemoryPoolMXBean>();
    while (it.hasNext()) {
        bean = it.next();
        if (bean.getType().equals(MemoryType.NON_HEAP)) {
            beans.add(bean);
            return bean;
        }
    }
    if (beans.size() == 1)
        return beans.getFirst();
    // Class Memory/ClassBlock Memory?
    it = manager.iterator();
    while (it.hasNext()) {
        bean = it.next();
        if (StringUtil.indexOfIgnoreCase(bean.getName(), "Class Memory") != -1) {
            return bean;
        }
    }
    return null;
}

Example 69 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project Lucee by lucee.

the class MemoryControler method init.

public static synchronized void init(ConfigServer cs) {
    if (init)
        return;
    // set level
    for (MemoryPoolMXBean pool : ManagementFactory.getMemoryPoolMXBeans()) {
        types.put(pool.getName(), pool.getType());
        // we should rather check for the pool name "Tenured Gen"?
        if (pool.getType() == MemoryType.HEAP && pool.isUsageThresholdSupported()) {
            long maxMemory = pool.getUsage().getMax();
            long warningThreshold = (long) (maxMemory * 0.9);
            // long warningThreshold = maxMemory -(10*1024*1024);
            pool.setUsageThreshold(warningThreshold);
        }
    }
    MemoryMXBean mbean = ManagementFactory.getMemoryMXBean();
    NotificationEmitter emitter = (NotificationEmitter) mbean;
    MemoryNotificationListener listener = new MemoryNotificationListener(types);
    emitter.addNotificationListener(listener, null, cs);
    init = true;
}

Example 70 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project Lucee by lucee.

the class MacAddressWrap method getMemoryUsageAsStruct.

public static Struct getMemoryUsageAsStruct(int type) {
    java.util.List<MemoryPoolMXBean> manager = ManagementFactory.getMemoryPoolMXBeans();
    Iterator<MemoryPoolMXBean> it = manager.iterator();
    MemoryPoolMXBean bean;
    MemoryUsage usage;
    MemoryType _type;
    long used = 0, max = 0, init = 0;
    while (it.hasNext()) {
        bean = it.next();
        usage = bean.getUsage();
        _type = bean.getType();
        if ((type == MEMORY_TYPE_HEAP && _type == MemoryType.HEAP) || (type == MEMORY_TYPE_NON_HEAP && _type == MemoryType.NON_HEAP)) {
            used += usage.getUsed();
            max += usage.getMax();
            init += usage.getInit();
        }
    }
    Struct sct = new StructImpl();
    sct.setEL(KeyConstants._used, Caster.toDouble(used));
    sct.setEL(KeyConstants._max, Caster.toDouble(max));
    sct.setEL(KeyConstants._init, Caster.toDouble(init));
    sct.setEL(KeyImpl.init("available"), Caster.toDouble(max - used));
    return sct;
}