public BatchRequestQueue(Instance instance, bool datagram)
{
Ice.InitializationData initData = instance.initializationData();
_interceptor = initData.batchRequestInterceptor;
_batchStreamInUse = false;
_batchRequestNum = 0;
_batchStream = new BasicStream(instance, Ice.Util.currentProtocolEncoding);
_batchStream.writeBlob(Protocol.requestBatchHdr);
_batchMarker = _batchStream.size();
_request = new BatchRequestI(this);
_maxSize = instance.batchAutoFlushSize();
if(_maxSize > 0 && datagram)
{
int udpSndSize = initData.properties.getPropertyAsIntWithDefault("Ice.UDP.SndSize",
65535 - _udpOverhead);
if(udpSndSize < _maxSize)
{
_maxSize = udpSndSize;
}
}
}
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();
}
}
//
// Marshal the endpoint
//
public override void streamWrite(BasicStream s)
{
s.startWriteEncaps(_rawEncoding, Ice.FormatType.DefaultFormat);
s.writeBlob(_rawBytes);
s.endWriteEncaps();
}
private void flushRequests()
{
lock(this)
{
Debug.Assert(_connection != null && !_initialized);
while(_batchRequestInProgress)
{
System.Threading.Monitor.Wait(this);
}
//
// 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;
}
LinkedListNode<Request> p = _requests.First; // _requests is immutable when _flushing = true
Ice.LocalException exception = null;
while(p != null)
{
Request request = p.Value;
try
{
if(request.os != null)
{
BasicStream os = new BasicStream(request.os.instance(), Ice.Util.currentProtocolEncoding);
_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);
}
else if(request.outAsync.send(_connection, _compress, _response, out request.sentCallback))
{
if(request.sentCallback != null)
{
request.outAsync.invokeSentAsync(request.sentCallback);
}
}
}
catch(RetryException ex)
{
exception = ex.get();
try
{
// Remove the request handler before retrying.
_reference.getInstance().requestHandlerFactory().removeRequestHandler(_reference, this);
}
catch(Ice.CommunicatorDestroyedException)
{
// Ignore
}
request.outAsync.retryException(ex.get());
}
catch(Ice.LocalException ex)
{
exception = ex;
Ice.AsyncCallback cb = request.outAsync.completed(ex);
if(cb != null)
{
request.outAsync.invokeCompletedAsync(cb);
}
}
LinkedListNode<Request> tmp = p;
p = p.Next;
_requests.Remove(tmp);
}
//
// If we aren't caching the connection, don't bother creating a
// connection request handler. Otherwise, update the proxies
// request handler to use the more efficient connection request
// handler.
//
if(_reference.getCacheConnection() && exception == null)
{
_connectionRequestHandler = new ConnectionRequestHandler(_reference, _connection, _compress);
foreach(Ice.ObjectPrxHelperBase prx in _proxies)
{
prx.setRequestHandler__(this, _connectionRequestHandler);
}
}
lock(this)
{
Debug.Assert(!_initialized);
_exception = exception;
_initialized = _exception == null;
_flushing = false;
try
{
//
// Only remove once all the requests are flushed to
// guarantee serialization.
//
_reference.getInstance().requestHandlerFactory().removeRequestHandler(_reference, this);
}
catch(Ice.CommunicatorDestroyedException)
{
// Ignore
}
_proxies.Clear();
_proxy = null; // Break cyclic reference count.
System.Threading.Monitor.PulseAll(this);
}
}
//
// Marshal the endpoint
//
public override void streamWrite(BasicStream s)
{
s.writeShort(_type);
s.startWriteEncaps();
s.writeBlob(_rawBytes);
s.endWriteEncaps();
}
