content: /*
  * Copyright (c) 1997 - 2016
  * Actelion Pharmaceuticals Ltd.
  * Gewerbestrasse 16
  * CH-4123 Allschwil, Switzerland
  *
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright notice, this
  *    list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. Neither the name of the the copyright holder nor the
  *    names of its contributors may be used to endorse or promote products
  *    derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
  
  package com.actelion.research.util;
  
  import java.util.Hashtable;
  
  /**
   * 13.02.2006 MvK
   * @author vonkorm
   *
   */
  public class SizeOf
  {
      private static final Runtime RUNTIME = Runtime.getRuntime ();
  
      public static void main (String [] args) throws Exception
      {
      	int numMols = 500000;
      	int par = 3;
      	
      	Hashtable ht = new Hashtable(numMols);
      	System.out.println("Used memory " + SizeOf.usedMemory());        
  
      	for (int i = 0; i < numMols; i++) {
      		float[] arr = new float[par];
      		ht.put(Integer.valueOf(i), arr);
  		}
       	System.out.println("Used memory " + SizeOf.usedMemory());        
      	
      	System.out.println("Finished");
      	System.exit(0);
      }
  
  
      private static void runGC() throws Exception {
          long usedMem1 = usedMemory();
          long usedMem2 = Long.MAX_VALUE;
  
          for (int i = 0; (usedMem1 < usedMem2) && (i < 500); ++ i)  {
  //          System.runFinalization();
  			System.gc();
  
              Thread.yield();
              
              usedMem2 = usedMem1;
              usedMem1 = usedMemory ();
          }
      }
  
      public static long usedMemory ()
      {
          return RUNTIME.totalMemory () - RUNTIME.freeMemory ();
      }
  
      public static long usedMemoryMB () {
          return (long)((RUNTIME.totalMemory () - RUNTIME.freeMemory ())/1000000.0 + 0.5);
      }
  }
  