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(), 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);
}
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();
}
}
