/**
* Registers a Server end of a NetBarrier with the BNS
*
* @param name
* Name to register with BNS
* @param bar
* Barrier to register
* @return True if the name was registered successfully, false otherwise
*/
public Boolean register(String name, NetBarrier bar)
{
// Ensure only one registration can happen at a time
lock (this)
{
// Create a new registration message
BNSMessage message = new BNSMessage();
message.type = BNSMessageProtocol.REGISTER_REQUEST;
message.name = name;
message.serviceLocation = (NetChannelLocation)this.fromBNS.getLocation();
message.location = (NetBarrierLocation)bar.getLocation();
// Write registration message to the BNS
this.toBNS.write(message);
// Read in reply
BNSMessage reply = (BNSMessage)this.fromBNS.read();
return(reply.success);
}
}
/**
* Creates a new server end of a NetBarrier with a given index and name
*
* @param name
* Name to register with the BNS
* @param index
* The index to create the NetBarrier with
* @param localEnrolled
* The number of locally enrolled processes
* @param netEnrolled
* The number of remote enrollments to wait for
* @return A new NetBarrier
* @//throws ArgumentException
* Thrown if the parameters are outside the defined ranges
* @//throws InvalidOperationException
* Thrown if the connection to the BNS has not been initialised
*/
public static NetBarrier numberedNetBarrier(String name, int index, int localEnrolled, int netEnrolled)
////throws ArgumentException , InvalidOperationException
{
// Check if the BNS connection is initialised
if (!BNS.initialised)
{
throw new InvalidOperationException("The connection to the BNS has not been initialised");
}
// Create a new NetBarrier
NetBarrier toReturn = NetBarrierEnd.numberedNetBarrier(index, localEnrolled, netEnrolled);
// Attempt to register
if (BNS.service.register(name, toReturn))
{
return(toReturn);
}
// Registration failed. Destroy and throw exception
toReturn.destroy();
throw new ArgumentException("Failed to register " + name + " with the BNS");
}
