org.jcsp.lang
Class SharedAltingConnectionClient<T>

java.lang.Object
  org.jcsp.lang.Guard
      org.jcsp.lang.AltingConnectionClient<T>
          org.jcsp.lang.AltingConnectionClientImpl<T>
              org.jcsp.lang.SharedAltingConnectionClient<T>

All Implemented Interfaces:

ConnectionClient<T>, SharedConnectionClient<T>

Direct Known Subclasses:

NetSharedAltingConnectionClient

public class SharedAltingConnectionClient<T>
extends AltingConnectionClientImpl<T>
implements SharedConnectionClient<T>

Implements a client end of a Connection which can have multiple client processes.

This object cannot itself be shared between concurrent processes but duplicate objects can be generated that can be used by multiple concurrent processes. This can be achieved using the duplicate() method.

The reply from the server can be ALTed over.

Author:

Quickstone Technologies Limited

Constructor Summary

protected

SharedAltingConnectionClient(AltingChannelInput fromServer, ChannelInput synchIn, ChannelOutput openToServer, ChannelOutput reqToServer, SharedChannelOutput synchOut, ChannelOutput backToClient, org.jcsp.lang.ConnectionWithSharedAltingClient parent)

Method Summary

protected void	claim() This claims a lock on the client.
SharedConnectionClient	duplicate() Returns a SharedConnectionClient object that is a duplicate of the object on which this method is called.
protected void	release() This releases a lock on the client.

Methods inherited from class org.jcsp.lang.AltingConnectionClientImpl

isOpen, reply, request

Methods inherited from class org.jcsp.lang.AltingConnectionClient

getAltingChannel, pending, setAltingChannel

Methods inherited from class org.jcsp.lang.Guard

schedule

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jcsp.lang.ConnectionClient

isOpen, reply, request

Constructor Detail

SharedAltingConnectionClient

protected SharedAltingConnectionClient(AltingChannelInput fromServer,
                                       ChannelInput synchIn,
                                       ChannelOutput openToServer,
                                       ChannelOutput reqToServer,
                                       SharedChannelOutput synchOut,
                                       ChannelOutput backToClient,
                                       org.jcsp.lang.ConnectionWithSharedAltingClient parent)

Method Detail

claim

protected final void claim()

Description copied from class: AltingConnectionClientImpl

This claims a lock on the client. This implementation does nothing as instances of this class are only meant to be used with One2?Connection objects.

Overrides:

claim in class AltingConnectionClientImpl<T>

release

protected final void release()

Description copied from class: AltingConnectionClientImpl

This releases a lock on the client. This implementation does nothing as instances of this class are only meant to be used with One2?Connection objects.

Overrides:

release in class AltingConnectionClientImpl<T>

duplicate

public SharedConnectionClient duplicate()

Returns a SharedConnectionClient object that is a duplicate of the object on which this method is called.

This allows a process using a SharedAltingConnectionClient object to pass references to the connection client to multiple processes.

The object returned can be cast into a SharedConnectionClient object.

Specified by:

duplicate in interface SharedConnectionClient<T>

Returns:

a duplicate SharedAltingConnectionClient object.