org.brutusin.wava.core.plug.impl.niceness

Class HomogeneusSpreadNicenessHandler

java.lang.Object

org.brutusin.wava.core.plug.NicenessHandler

org.brutusin.wava.core.plug.impl.niceness.HomogeneusSpreadNicenessHandler

public final class HomogeneusSpreadNicenessHandler
extends NicenessHandler

Distributes niceness among processes in such a way that:

 1)  niceness(processPosition + 1) - 1 <= niceness(processPosition) <= niceness(processPosition + 1)
 2)  multiplicity(n) = m for all niceness values  n, or exists a niceness value  n0 such as:
     multiplicity(n) = m for  n <= n0 and
     multiplicity(n) = m + 1 for  n > n0
 

Author:

Ignacio del Valle Alles idelvall@brutusin.org

Constructor Summary

Constructors

Constructor and Description
HomogeneusSpreadNicenessHandler()

Method Summary

Modifier and Type	Method and Description
static int	distribute(int i, int total, int min, int max)
int	getNiceness(int processPosition, int processCount, int groupPosition, int groupCount, int minNiceness, int maxNiceness) Returns the niceness of the processPosition-th process out of a total of total

Methods inherited from class org.brutusin.wava.core.plug.NicenessHandler

getInstance

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HomogeneusSpreadNicenessHandler

public HomogeneusSpreadNicenessHandler()

Method Detail

getNiceness

public int getNiceness(int processPosition,
                       int processCount,
                       int groupPosition,
                       int groupCount,
                       int minNiceness,
                       int maxNiceness)

Description copied from class: NicenessHandler

Returns the niceness of the processPosition-th process out of a total of total

Specified by:

getNiceness in class NicenessHandler

Parameters:

processPosition - from 0 to processCount -1, in decreasing order of priority

processCount - total number of running processes

groupPosition - from 0 to groupCount -1, in decreasing order of priority

groupCount - total number of groups with running processes

Returns:

a value within the range [minNiceness,maxNiceness]

distribute

public static int distribute(int i,
                             int total,
                             int min,
                             int max)