Distributed Transaction Management, Autumn 2003 , Exercise 1

1. Create a program which opens a socket, listen it and answer to all
programs who connect to it. This should be easy with Java-tutorial from
http://java.sun.com/docs/books/tutorial/networking/

2. Write a coordinator based locking method. Coordinator has a vector of
integers which clients can ask exclusive or shared locks. Your
implementation does not need to implement queues for locks and manage
from deadlocks.

3. Write a voting based locking manager. You need several resource
managers. You don't need to manage from failutes e.g. queue for locks
and deadlocks.


4. Write a pseudocode for queue based locking manager using voting. You
dont need to manage deadlocks.

5. Implement previous exercise.