MemoryUtil.java Source code

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Here is the source code for MemoryUtil.java

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/*
 * Copyright 2008-2010 the T2 Project ant the Others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package org.t2framework.commons.util;

import java.lang.management.ManagementFactory;
import java.lang.management.MemoryMXBean;
import java.lang.management.MemoryUsage;

public class MemoryUtil {

    public static long getTotalMemory() {
        return getRuntime().totalMemory();
    }

    public static long getFreeMemory() {
        return getRuntime().freeMemory();
    }

    public static long getMaxMemory() {
        return getRuntime().maxMemory();
    }

    public static long getHeapInitMemory() {
        return getHeapMemoryUsage().getInit();
    }

    public static long getHeapMaxMemory() {
        return getHeapMemoryUsage().getMax();
    }

    public static long getHeapUsedMemory() {
        return getHeapMemoryUsage().getUsed();
    }

    public static long getHeapCommittedMemory() {
        return getHeapMemoryUsage().getCommitted();
    }

    private static MemoryUsage getHeapMemoryUsage() {
        return getMemoryMXBean().getHeapMemoryUsage();
    }

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

    private static Runtime getRuntime() {
        return Runtime.getRuntime();
    }

}