SwapHeavierToLighterNeighbours.h

00001 /* ****************************************************************** **
00002 **    OpenSees - Open System for Earthquake Engineering Simulation    **
00003 **          Pacific Earthquake Engineering Research Center            **
00004 **                                                                    **
00005 **                                                                    **
00006 ** (C) Copyright 1999, The Regents of the University of California    **
00007 ** All Rights Reserved.                                               **
00008 **                                                                    **
00009 ** Commercial use of this program without express permission of the   **
00010 ** University of California, Berkeley, is strictly prohibited.  See   **
00011 ** file 'COPYRIGHT'  in main directory for information on usage and   **
00012 ** redistribution,  and for a DISCLAIMER OF ALL WARRANTIES.           **
00013 **                                                                    **
00014 ** Developed by:                                                      **
00015 **   Frank McKenna (fmckenna@ce.berkeley.edu)                         **
00016 **   Gregory L. Fenves (fenves@ce.berkeley.edu)                       **
00017 **   Filip C. Filippou (filippou@ce.berkeley.edu)                     **
00018 **                                                                    **
00019 ** ****************************************************************** */
00020                                                                         
00021 // $Revision: 1.1.1.1 $
00022 // $Date: 2000/09/15 08:23:19 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/domain/loadBalancer/SwapHeavierToLighterNeighbours.h,v $
00024                                                                         
00025                                                                         
00026 // File: ~/domain/loadBalancer/SwapHeavierToLighterNeighbours.h
00027 // 
00028 // Written: fmk 
00029 // Created: Fri Aug 29 17:43:25 1997
00030 // Revision: A
00031 //
00032 // Description: This file contains the class definition for SwapHeavierToLighterNeighbours.
00033 // A SwapHeavierToLighterNeighbours is an object used to balance the partition.
00034 // It will go thought the weigted partition graph and shed load from a heavier
00035 // to its lighter neighbours if the ratio between the two is greater than a 
00036 // certain percent. It repaets this process a number of times.
00037 //
00038 // What: "@(#) SwapHeavierToLighterNeighbours.h, revA"
00039 
00040 #ifndef SwapHeavierToLighterNeighbours_h
00041 #define SwapHeavierToLighterNeighbours_h
00042 
00043 #include <LoadBalancer.h>
00044 
00045 class SwapHeavierToLighterNeighbours: public LoadBalancer
00046 {
00047   public:
00048     SwapHeavierToLighterNeighbours();
00049     SwapHeavierToLighterNeighbours(double factorGreater, 
00050                                    int numReleases);
00051     
00052     virtual  ~SwapHeavierToLighterNeighbours();    
00053 
00054     virtual int balance(Graph &theWeightedGraph);
00055 
00056   protected:    
00057         
00058   private:
00059     int numReleases;
00060     double factorGreater;
00061     bool disallowDisconnectedGraphs;            
00062 };
00063 
00064 #endif
00065 
00066
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