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/*
Copyright (C) 2000 Stefan Westerfeld
stefan@space.twc.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef ASYNCSCHEDULE_H
#define ASYNCSCHEDULE_H
#include "gslschedule.h"
#include "datapacket.h"
#include "weakreference.h"
#include <queue>
/*
* BC - Status (2002-03-08): ASyncNetSend, ASyncNetReceive, ASyncPort.
*
* None of these classes is considered part of the public API. Do NOT use it
* in your apps. These are part of the implementation of libartsflow's
* StdFlowSystem, and subject to change with the needs of it.
*/
namespace Arts {
class ASyncPort;
class ASyncNetSend : public FlowSystemSender_skel
{
protected:
ASyncPort *ap;
std::queue<GenericDataPacket *> pqueue;
FlowSystemReceiver receiver;
long receiveHandlerID;
std::string _dest;
public:
ASyncNetSend(ASyncPort *ap, const std::string& dest);
~ASyncNetSend();
long notifyID();
std::string dest();
/* this overwrites the Object::notify function */
void notify(const Notification& notification);
void processed();
void setReceiver(FlowSystemReceiver receiver);
void disconnect();
};
class ASyncNetReceive : public FlowSystemReceiver_skel,
public GenericDataChannel
{
protected:
GenericAsyncStream *stream;
FlowSystemSender sender;
Notification gotPacketNotification;
std::list<GenericDataPacket *> sent;
long _receiveHandlerID;
public:
ASyncNetReceive(ASyncPort *port, FlowSystemSender sender);
~ASyncNetReceive();
// GenericDataChannel interface
void processedPacket(GenericDataPacket *packet);
void sendPacket(GenericDataPacket *packet);
void setPull(int packets, int capacity);
void endPull();
// FlowSystemReceiver interface
long receiveHandlerID();
void disconnect();
void receive(Buffer *buffer); // custom data receiver
};
class ASyncPort :public Port, public GenericDataChannel {
protected:
long notifyID;
std::vector<Notification> subscribers;
std::list<GenericDataPacket *> sent;
std::list<ASyncNetSend *> netSenders;
WeakReference<FlowSystemReceiver> netReceiver;
GenericAsyncStream *stream;
bool pull;
Notification pullNotification;
public:
// GenericDataChannel interface
void processedPacket(GenericDataPacket *packet);
void sendPacket(GenericDataPacket *packet);
void setPull(int packets, int capacity);
void endPull();
// Port interface
ASyncPort(const std::string& name, void *ptr, long flags,
StdScheduleNode* parent);
~ASyncPort();
void connect(Port *port);
void disconnect(Port *port);
ASyncPort *asyncPort();
// Network transparency
void addSendNet(ASyncNetSend *netsend); // send
void removeSendNet(ASyncNetSend *netsend);
void disconnectRemote(const std::string& dest);
long receiveNetNotifyID(); // receive
GenericAsyncStream *receiveNetCreateStream();
NotificationClient *receiveNetObject();
void setNetReceiver(ASyncNetReceive *receiver);
};
}
#endif /* ASYNCSCHEDULE_H */
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