org.jgroups.stack

Class AckReceiverWindow


public class AckReceiverWindow
extends java.lang.Object

Counterpart of AckSenderWindow. Every message received is ACK'ed (even duplicates) and added to a hashmap keyed by seqno. The next seqno to be received is stored in next_to_remove. When a message with a seqno less than next_to_remove is received, it will be discarded. The remove() method removes and returns a message whose seqno is equal to next_to_remove, or null if not found.
Change May 28 2002 (bela): replaced TreeSet with HashMap. Keys do not need to be sorted, and adding a key to a sorted set incurs overhead.
Author:
Bela Ban

Constructor Summary

AckReceiverWindow(long initial_seqno)

Method Summary

void
add(long seqno, Message msg)
static void
main(String[] args)
Message
remove()
Removes a message whose seqno is equal to next_to_remove, increments the latter.
void
reset()
String
toString()

Constructor Details

AckReceiverWindow

public AckReceiverWindow(long initial_seqno)

Method Details

add

public void add(long seqno,
                Message msg)

main

public static void main(String[] args)

remove

public Message remove()
Removes a message whose seqno is equal to next_to_remove, increments the latter. Returns message that was removed, or null, if no message can be removed. Messages are thus removed in order.

reset

public void reset()

toString

public String toString()

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