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## mars.tools
Class CacheSimulator

    java.lang.Object
      java.awt.Component
          java.awt.Container
              java.awt.Window
                  java.awt.Frame
                      javax.swing.JFrame
                          mars.tools.AbstractMarsToolAndApplication
                              mars.tools.CacheSimulator

All Implemented Interfaces:
  ImageObserver, MenuContainer, Serializable, Observer, Accessible, RootPaneContainer, WindowConstants, MarsTool

    public class CacheSimulator

extends AbstractMarsToolAndApplication

A data cache simulator. It can be run either as a stand-alone Java application having access to the mars package, or through MARS as an item in its Tools menu. It makes maximum use of methods inherited from its abstract superclass AbstractMarsToolOrApp. Pete Sanderson, v 1.0: 16-18 October 2006, v 1.1: 7 November 2006. v 1.2: 23 December 2010.

Version 1.2 fixes a bug in the hit/miss animator under full or N-way set associative. It was animating the block of initial access (first block of set). Now it animates the block of final access (where address found or stored). Also added log display to GUI (previously System.out).

See Also:
  Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class mars.tools.AbstractMarsToolAndApplication
`AbstractMarsToolAndApplication.ConnectButton, AbstractMarsToolAndApplication.EnterKeyListener`

Nested classes/interfaces inherited from class javax.swing.JFrame
`JFrame.AccessibleJFrame`

Nested classes/interfaces inherited from class java.awt.Frame
`Frame.AccessibleAWTFrame`

Nested classes/interfaces inherited from class java.awt.Window
`Window.AccessibleAWTWindow`

Nested classes/interfaces inherited from class java.awt.Container
`Container.AccessibleAWTContainer`

Nested classes/interfaces inherited from class java.awt.Component
`Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy`

Field Summary

Fields inherited from class mars.tools.AbstractMarsToolAndApplication
`connectButton, isBeingUsedAsAMarsTool, theWindow, thisMarsApp`

Fields inherited from class javax.swing.JFrame
`accessibleContext, EXIT_ON_CLOSE, rootPane, rootPaneCheckingEnabled`

Fields inherited from class java.awt.Frame
`CROSSHAIR_CURSOR, DEFAULT_CURSOR, E_RESIZE_CURSOR, HAND_CURSOR, ICONIFIED, MAXIMIZED_BOTH, MAXIMIZED_HORIZ, MAXIMIZED_VERT, MOVE_CURSOR, N_RESIZE_CURSOR, NE_RESIZE_CURSOR, NORMAL, NW_RESIZE_CURSOR, S_RESIZE_CURSOR, SE_RESIZE_CURSOR, SW_RESIZE_CURSOR, TEXT_CURSOR, W_RESIZE_CURSOR, WAIT_CURSOR`

Fields inherited from class java.awt.Component
`BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT`

Fields inherited from interface javax.swing.WindowConstants
`DISPOSE_ON_CLOSE, DO_NOTHING_ON_CLOSE, HIDE_ON_CLOSE`

Fields inherited from interface java.awt.image.ImageObserver
`ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH`

Constructor Summary
`CacheSimulator()` Simple constructor, likely used by the MARS Tools menu mechanism
`CacheSimulator(String title, String heading)` Simple constructor, likely used to run a stand-alone cache simulator.

Method Summary
`protected JComponent` | `buildMainDisplayArea()` Method that constructs the main cache simulator display area.
`String` | `getName()` Required MarsTool method to return Tool name.
`protected void` | `initializePostGUI()` The only post-GUI initialization is to create the initial cache object based on the default settings of the various combo boxes.
`protected void` | `initializePreGUI()` Initialize all JComboBox choice structures not already initialized at declaration.
`static void` | `main(String[] args)` Main provided for pure stand-alone use.
`protected void` | `processMIPSUpdate(Observable memory, AccessNotice accessNotice)` Apply caching policies and update display when connected MIPS program accesses (data) memory.
`protected void` | `reset()` Method to reset cache, counters and display when the Reset button selected.
`protected void` | `updateDisplay()` Updates display immediately after each update (AccessNotice) is processed, after cache configuration changes as needed, and after each execution step when Mars is running in timed mode.

Methods inherited from class mars.tools.AbstractMarsToolAndApplication
`action, addAsObserver, addAsObserver, addAsObserver, buildButtonAreaMarsTool, buildButtonAreaStandAlone, buildHeadingArea, deleteAsObserver, deleteAsObserver, getHelpComponent, go, isObserving, performSpecialClosingDuties, update`

Methods inherited from class javax.swing.JFrame
`addImpl, createRootPane, frameInit, getAccessibleContext, getContentPane, getDefaultCloseOperation, getGlassPane, getGraphics, getJMenuBar, getLayeredPane, getRootPane, getTransferHandler, isDefaultLookAndFeelDecorated, isRootPaneCheckingEnabled, paramString, processWindowEvent, remove, repaint, setContentPane, setDefaultCloseOperation, setDefaultLookAndFeelDecorated, setGlassPane, setIconImage, setJMenuBar, setLayeredPane, setLayout, setRootPane, setRootPaneCheckingEnabled, setTransferHandler, update`

Methods inherited from class java.awt.Frame
`addNotify, getCursorType, getExtendedState, getFrames, getIconImage, getMaximizedBounds, getMenuBar, getState, getTitle, isResizable, isUndecorated, remove, removeNotify, setCursor, setExtendedState, setMaximizedBounds, setMenuBar, setResizable, setState, setTitle, setUndecorated`

Methods inherited from class java.awt.Window
`addPropertyChangeListener, addPropertyChangeListener, addWindowFocusListener, addWindowListener, addWindowStateListener, applyResourceBundle, applyResourceBundle, createBufferStrategy, createBufferStrategy, dispose, getBufferStrategy, getFocusableWindowState, getFocusCycleRootAncestor, getFocusOwner, getFocusTraversalKeys, getGraphicsConfiguration, getIconImages, getInputContext, getListeners, getLocale, getModalExclusionType, getMostRecentFocusOwner, getOwnedWindows, getOwner, getOwnerlessWindows, getToolkit, getWarningString, getWindowFocusListeners, getWindowListeners, getWindows, getWindowStateListeners, hide, isActive, isAlwaysOnTop, isAlwaysOnTopSupported, isFocusableWindow, isFocusCycleRoot, isFocused, isLocationByPlatform, isShowing, pack, paint, postEvent, processEvent, processWindowFocusEvent, processWindowStateEvent, removeWindowFocusListener, removeWindowListener, removeWindowStateListener, reshape, setAlwaysOnTop, setBounds, setBounds, setCursor, setFocusableWindowState, setFocusCycleRoot, setIconImages, setLocationByPlatform, setLocationRelativeTo, setMinimumSize, setModalExclusionType, setSize, setSize, setVisible, show, toBack, toFront`

Methods inherited from class java.awt.Container
`add, add, add, add, add, addContainerListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getMousePosition, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, print, printComponents, processContainerEvent, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, transferFocusBackward, transferFocusDownCycle, validate, validateTree`

Methods inherited from class java.awt.Component
`action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resize, resize, setBackground, setComponentOrientation, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setName, setPreferredSize, show, size, toString, transferFocus, transferFocusUpCycle`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Methods inherited from interface java.awt.MenuContainer
`getFont, postEvent`

Constructor Detail

### CacheSimulator

    public CacheSimulator(String title,
                          String heading)

  Simple constructor, likely used to run a stand-alone cache simulator.

  Parameters:
    `title` - String containing title for title bar
    `heading` - String containing text for heading shown in upper part of window.

### CacheSimulator

    public CacheSimulator()

  Simple constructor, likely used by the MARS Tools menu mechanism

Method Detail

### main

    public static void main(String[] args)

  Main provided for pure stand-alone use. Recommended stand-alone use is to write a driver program that instantiates a CacheSimulator object then invokes its go() method. "stand-alone" means it is not invoked from the MARS Tools menu. "Pure" means there is no driver program to invoke the Cache Simulator.

### getName

    public String getName()

  Required MarsTool method to return Tool name.

  Specified by:
    `getName` in interface `MarsTool`
  Specified by:
    `getName` in class `AbstractMarsToolAndApplication`
  Returns:
    Tool name. MARS will display this in menu item.

### buildMainDisplayArea

    protected JComponent buildMainDisplayArea()

  Method that constructs the main cache simulator display area. It is organized vertically into three major components: the cache configuration which an be modified using combo boxes, the cache performance which is updated as the attached MIPS program executes, and the runtime log which is optionally used to display log of each cache access.

  Specified by:
    `buildMainDisplayArea` in class `AbstractMarsToolAndApplication`
  Returns:
    the GUI component containing these three areas

### processMIPSUpdate

    protected void processMIPSUpdate(Observable memory,
                                     AccessNotice accessNotice)

  Apply caching policies and update display when connected MIPS program accesses (data) memory.

  Overrides:
    `processMIPSUpdate` in class `AbstractMarsToolAndApplication`
  Parameters:
    `memory` - the attached memory
    `accessNotice` - information provided by memory in MemoryAccessNotice object

### initializePreGUI

    protected void initializePreGUI()

  Initialize all JComboBox choice structures not already initialized at declaration. Also creates initial default cache object. Overrides inherited method that does nothing.

  Overrides:
    `initializePreGUI` in class `AbstractMarsToolAndApplication`

### initializePostGUI

    protected void initializePostGUI()

  The only post-GUI initialization is to create the initial cache object based on the default settings of the various combo boxes. Overrides inherited method that does nothing.

  Overrides:
    `initializePostGUI` in class `AbstractMarsToolAndApplication`

### reset

    protected void reset()

  Method to reset cache, counters and display when the Reset button selected. Overrides inherited method that does nothing.

  Overrides:
    `reset` in class `AbstractMarsToolAndApplication`

### updateDisplay

    protected void updateDisplay()

  Updates display immediately after each update (AccessNotice) is processed, after cache configuration changes as needed, and after each execution step when Mars is running in timed mode. Overrides inherited method that does nothing.

  Overrides:
    `updateDisplay` in class `AbstractMarsToolAndApplication`

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