mwalk.visitor
Class UpathMetricVisitor

java.lang.Object
  |
  +--mwalk.visitor.AbstractVisitor
        |
        +--mwalk.visitor.PrintVisitor
              |
              +--mwalk.visitor.MetricVisitor
                    |
                    +--mwalk.visitor.BasicMetricVisitor
                          |
                          +--mwalk.visitor.UpathMetricVisitor

public class UpathMetricVisitor

extends BasicMetricVisitor

An implementation of a visitor that gathers metric data, but uses real unicast path lengths in calculations rather than assuming multicast paths equate to unicast paths.

Version:

1.0

Author:

Robert Chalmers

Field Summary

private static java.lang.String	DEF_FILENAME Default file name if none supplied
protected java.lang.String	pathFile

Fields inherited from class mwalk.visitor.BasicMetricVisitor

CFG_BASE, DEF_FILENAME, optMulti, optRun

Fields inherited from class mwalk.visitor.MetricVisitor

CFG_BASE, DEF_FILENAME, offset, periods, time, timeval

Fields inherited from class mwalk.visitor.PrintVisitor

CFG_BASE, def_filename, filename, ps

Fields inherited from class mwalk.visitor.AbstractVisitor

CFG_BASE, eval, seen, verbose

Constructor Summary

UpathMetricVisitor()
Default constructor.

UpathMetricVisitor(long periods)

UpathMetricVisitor(java.lang.String filename)
Constructor.

UpathMetricVisitor(java.lang.String filename, long periods)

Method Summary

protected MetricCount	addLinks(MetricCount count, int mlinks)
boolean	init(Tree tree) Initialize the visitor state.
java.lang.Object	visitDown(Tree tree, TreeNode node) Visit the current node prior to visiting children.

Methods inherited from class mwalk.visitor.BasicMetricVisitor

again, doVisit, getFilename, printHeader, process

Methods inherited from class mwalk.visitor.MetricVisitor

getChildren, getTime, incTime, postfix, setTime, startTime, visitDown

Methods inherited from class mwalk.visitor.PrintVisitor

printData, printData, setFilename

Methods inherited from class mwalk.visitor.AbstractVisitor

cfgBoolean, cfgInt, cfgString, cfgVisitor, evaluator, evaluator, getParents, getReceivers, haveSeen, haveVisited, markSeen, markVisited, nextReceiver, prefix, reset, verbose, visitUp, visitUp, walkDown, walkUp

Methods inherited from class java.lang.Object

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

Field Detail

DEF_FILENAME

private static final java.lang.String DEF_FILENAME

Default file name if none supplied

pathFile

protected java.lang.String pathFile

Constructor Detail

UpathMetricVisitor

public UpathMetricVisitor()

Default constructor.

UpathMetricVisitor

public UpathMetricVisitor(java.lang.String filename)

Constructor.

Parameters:

String - new default filename

UpathMetricVisitor

public UpathMetricVisitor(long periods)

UpathMetricVisitor

public UpathMetricVisitor(java.lang.String filename,
                          long periods)

Method Detail

init

public boolean init(Tree tree)

Initialize the visitor state.

Overrides:

init in class BasicMetricVisitor

Parameters:

Tree - current tree instance

visitDown

public java.lang.Object visitDown(Tree tree,
                                  TreeNode node)
                           throws VisitException

Visit the current node prior to visiting children. This method is called if prefix() returns true.

Overrides:

visitDown in class MetricVisitor

Parameters:

Tree - current tree instance

TreeNode - current node

Returns:

Object optional return value to pass back along the path

Throws:

VisitException - if a problem ocurred during visit

addLinks

protected MetricCount addLinks(MetricCount count,
                               int mlinks)

Overrides:

addLinks in class BasicMetricVisitor