Class c2.framework.FIFOPort 
All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class c2.framework.FIFOPort 

java.lang.Object
   |
   +----c2.framework.Port
           |
           +----c2.framework.FIFOPort
public class FIFOPort
extends Port
The simplest kind of communication ports is one that handles incoming and outgoing messages on a first-in-first-out (FIFO) basis.
See Also:
Port

Variable Index

o in_messages
Incoming message queue.
o out_messages
Outgoing message queue.

Constructor Index

o FIFOPort()
o FIFOPort(Brick)

Method Index

o className()
Accesses the name of the class.
o classType()
Accesses the class itself.
o receive(Message)
Receives a message by adding it to the port's incoming queue and notifying its brick.
o selectNextIncomingMessage()
Selects the next message from the incoming queue.
o selectNextOutgoingMessage()
Selects the next message from the outgoing queue.
o send(Message)
Sends a message by taking it off the port's outgoing queue and transfering it to its link's incoming queue.
o toString()
Displays the messages currently in the port's two queues.

Variables

o in_messages 
  protected Vector in_messages
Incoming message queue.
o out_messages 
  protected Vector out_messages
Outgoing message queue.

Constructors

o FIFOPort 
  public FIFOPort()
o FIFOPort 
  public FIFOPort(Brick b)

Methods

o className 
  protected static String className()
Accesses the name of the class.
Returns:
Port class name.
o classType 
  public static Class classType()
Accesses the class itself.
Returns:
Port class.
o receive 
  public void receive(Message msg)
Receives a message by adding it to the port's incoming queue and notifying its brick.
Parameters:
msg - Received message.
Overrides:
receive in class Port
o send 
  public void send(Message msg)
Sends a message by taking it off the port's outgoing queue and transfering it to its link's incoming queue.
Parameters:
msg - Message to send.
Overrides:
send in class Port
o selectNextIncomingMessage 
  public Message selectNextIncomingMessage()
Selects the next message from the incoming queue. Does so in a FIFO fashion.
Overrides:
selectNextIncomingMessage in class Port
o selectNextOutgoingMessage 
  public Message selectNextOutgoingMessage()
Selects the next message from the outgoing queue. Does so in a FIFO fashion. No messages are removed off the queue if the port is not linked to another.
Overrides:
selectNextOutgoingMessage in class Port
o toString 
  public String toString()
Displays the messages currently in the port's two queues. Used for debugging.
Overrides:
toString in class Port 
All Packages  Class Hierarchy  This Package  Previous  Next  Index