Source Code : JVM memory util

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JVM memory util

     
/*
 * 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();
  }

}

   
    
    
    
    
  

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