public static void CallbackWrite(IAsyncResult ar)
{
RemoteAsyncWriteDelegate del = (RemoteAsyncWriteDelegate)((AsyncResult)ar).AsyncDelegate;
lock (WriteLock)
{
_responseWrite.Add(del.EndInvoke(ar));
writeHandles[writeCounter++].Set();
if (writeCounter == numServers)
{
writeCounter = 0;
}
}
}
public void Write(Tuple tuple)
{
bool ViewOutOfDate = true;
while (ViewOutOfDate)
{
_responseWrite = new List <bool>();
View actualView = this.GetView();
int numberServers = actualView.Count();
numServers = numberServers;
writeHandles = new AutoResetEvent[numberServers];
Console.WriteLine(actualView);
for (int i = 0; i < numberServers; i++)
{
writeHandles[i] = new AutoResetEvent(false);
}
//List<ITupleSpaceXL> serversObj = new List<ITupleSpaceXL>();
List <string> toRemove = new List <string>();
foreach (string serverPath in actualView.Servers)
{
try
{
ITupleSpaceXL server = (ITupleSpaceXL)Activator.GetObject(typeof(ITupleSpaceXL), serverPath);
RemoteAsyncWriteDelegate RemoteDel = new RemoteAsyncWriteDelegate(server.write);
a++;
AsyncCallback RemoteCallback = new AsyncCallback(CallbackWrite);
IAsyncResult RemAr = RemoteDel.BeginInvoke(_workerId, _requestId, tuple, _view, CallbackWrite, null);
}
catch (System.Net.Sockets.SocketException)
{
Console.WriteLine("** FRONTEND WRITE: Could not call write on server");
}
}
WaitHandle.WaitAll(writeHandles, 2000);
//When some server joins the view while the operation is taking place
//Because some machine on my view crashed while the operation was taking place
if (_responseWrite.Count != _view.Servers.Count)
{
writeCounter = 0;
foreach (string s in _view.Servers)
{
try
{
ITupleSpaceXL tupleSpace = (ITupleSpaceXL)Activator.GetObject(typeof(ITupleSpaceXL), s);
tupleSpace.checkView();
}
catch (Exception) { Console.WriteLine("Server " + s + " is dead."); }
}
if (_responseWrite.Count > 0)
{
ViewOutOfDate = false;
}
}
else
{
if (_responseWrite.Contains(false) == true)
{
Console.WriteLine("** FRONTEND WRITE: View has been changed");
}
else
{
ViewOutOfDate = false;
}
}
_requestId++;
}
Console.WriteLine("** FRONTEND WRITE: Just wrote " + tuple + " a = " + a);
}
