edu.gvsu.mipsunit.munit

Class MemoryObserver

java.lang.Object

edu.gvsu.mipsunit.munit.MemoryObserver

All Implemented Interfaces:

java.util.Observer

public class MemoryObserver
extends java.lang.Object
implements java.util.Observer

Track changes to memory so that we can verify that memory has not changed unexpectedly. Created by kurmasz on 8/26/14.

Constructor Summary

Constructors

Constructor and Description
MemoryObserver()

Method Summary

Modifier and Type	Method and Description
java.util.HashSet<java.lang.Integer>	modificationSet() Return the Set of bytes that have been modified.
void	remove(int i) Remove a byte from the list of modified bytes.
void	remove(int i, int length) Remove bytes from the list of modified bytes.
void	update(java.util.Observable o, java.lang.Object arg) Called when Memory is accessed.

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoryObserver

public MemoryObserver()

Method Detail

update

public void update(java.util.Observable o,
                   java.lang.Object arg)

Called when Memory is accessed. This method keeps a list of the locations to which data is written.

Specified by:

update in interface java.util.Observer

Parameters:

o - The Memory object that was updated.

arg - A MemoryAccessNotice object describing the updated.

remove

public void remove(int i,
                   int length)

Remove bytes from the list of modified bytes. We typically do this when checking the final value of a memory location.

Parameters:

i - the initial byte to remove from the modification list.

length - the number of bytes to remove

remove

public void remove(int i)

Remove a byte from the list of modified bytes. We typically do this when checking the final value of a memory location.

Parameters:

i - the byte to remove from the modification list.

modificationSet

public java.util.HashSet<java.lang.Integer> modificationSet()

Return the Set of bytes that have been modified.

Returns:

the Set of bytes that have been modified.