public ConnectRequestHandler(Reference @ref, Ice.ObjectPrx proxy, Ice.ObjectDelM_ del)
{
_reference = @ref;
_response = _reference.getMode() == Reference.Mode.ModeTwoway;
_proxy = (Ice.ObjectPrxHelperBase)proxy;
_delegate = del;
_batchAutoFlush = @ref.getInstance().initializationData().properties.getPropertyAsIntWithDefault(
"Ice.BatchAutoFlush", 1) > 0 ? true : false;
_initialized = false;
_flushing = false;
_batchRequestInProgress = false;
_batchRequestsSize = Protocol.requestBatchHdr.Length;
_batchStream = new BasicStream(@ref.getInstance(), _batchAutoFlush);
_updateRequestHandler = false;
}
public ConnectRequestHandler(Reference @ref, Ice.ObjectPrx proxy, Ice.ObjectDelM_ del)
{
_reference = @ref;
_response = _reference.getMode() == Reference.Mode.ModeTwoway;
_proxy = (Ice.ObjectPrxHelperBase)proxy;
_delegate = del;
_batchAutoFlush = @ref.getInstance().initializationData().properties.getPropertyAsIntWithDefault(
"Ice.BatchAutoFlush", 1) > 0 ? true : false;
_initialized = false;
_flushing = false;
_batchRequestInProgress = false;
_batchRequestsSize = Protocol.requestBatchHdr.Length;
_batchStream = new BasicStream(@ref.getInstance(), Ice.Util.currentProtocolEncoding, _batchAutoFlush);
_updateRequestHandler = false;
}
private void flushRequests()
{
_m.Lock();
try
{
Debug.Assert(_connection != null && !_initialized);
while(_batchRequestInProgress)
{
_m.Wait();
}
//
// We set the _flushing flag to true to prevent any additional queuing. Callers
// might block for a little while as the queued requests are being sent but this
// shouldn't be an issue as the request sends are non-blocking.
//
_flushing = true;
}
finally
{
_m.Unlock();
}
LinkedList<Request> sentCallbacks = new LinkedList<Request>();
try
{
LinkedListNode<Request> p = _requests.First; // _requests is immutable when _flushing = true
while(p != null)
{
Request request = p.Value;
if(request.@out != null)
{
if(_connection.sendAsyncRequest(request.@out, _compress, _response, out request.sentCallback))
{
if(request.sentCallback != null)
{
sentCallbacks.AddLast(request);
}
}
}
else if(request.batchOut != null)
{
if(_connection.flushAsyncBatchRequests(request.batchOut, out request.sentCallback))
{
if(request.sentCallback != null)
{
sentCallbacks.AddLast(request);
}
}
}
else
{
BasicStream os = new BasicStream(request.os.instance());
_connection.prepareBatchRequest(os);
try
{
request.os.pos(0);
os.writeBlob(request.os.readBlob(request.os.size()));
}
catch(Ice.LocalException)
{
_connection.abortBatchRequest();
throw;
}
_connection.finishBatchRequest(os, _compress);
}
LinkedListNode<Request> tmp = p;
p = p.Next;
_requests.Remove(tmp);
}
}
catch(LocalExceptionWrapper ex)
{
_m.Lock();
try
{
Debug.Assert(_exception == null && _requests.Count > 0);
_exception = ex.get();
_reference.getInstance().clientThreadPool().dispatch(delegate()
{
flushRequestsWithException(ex);
});
}
finally
{
_m.Unlock();
}
}
catch(Ice.LocalException ex)
{
_m.Lock();
try
{
Debug.Assert(_exception == null && _requests.Count > 0);
_exception = ex;
_reference.getInstance().clientThreadPool().dispatch(delegate()
{
flushRequestsWithException(ex);
});
}
finally
{
_m.Unlock();
}
}
if(sentCallbacks.Count > 0)
{
Instance instance = _reference.getInstance();
instance.clientThreadPool().dispatch(delegate()
{
foreach(Request r in sentCallbacks)
{
if(r.@out != null)
{
[email protected]__(r.sentCallback);
}
else if(r.batchOut != null)
{
r.batchOut.sent__(r.sentCallback);
}
}
});
}
//
// We've finished sending the queued requests and the request handler now send
// the requests over the connection directly. It's time to substitute the
// request handler of the proxy with the more efficient connection request
// handler which does not have any synchronization. This also breaks the cyclic
// reference count with the proxy.
//
// NOTE: _updateRequestHandler is immutable once _flushing = true
//
if(_updateRequestHandler && _exception == null)
{
_proxy.setRequestHandler__(_delegate, new ConnectionRequestHandler(_reference, _connection, _compress));
}
_m.Lock();
try
{
Debug.Assert(!_initialized);
if(_exception == null)
{
_initialized = true;
_flushing = false;
}
_proxy = null; // Break cyclic reference count.
_delegate = null; // Break cyclic reference count.
_m.NotifyAll();
}
finally
{
_m.Unlock();
}
}
public void setException(Ice.LocalException ex)
{
_m.Lock();
try
{
Debug.Assert(!_initialized && _exception == null);
Debug.Assert(_updateRequestHandler || _requests.Count == 0);
_exception = ex;
_proxy = null; // Break cyclic reference count.
_delegate = null; // Break cyclic reference count.
//
// If some requests were queued, we notify them of the failure. This is done from a thread
// from the client thread pool since this will result in ice_exception callbacks to be
// called.
//
if(_requests.Count > 0)
{
_reference.getInstance().clientThreadPool().dispatch(delegate()
{
flushRequestsWithException(ex);
});
}
_m.NotifyAll();
}
finally
{
_m.Unlock();
}
}
