netstream_generic.h

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/*  $Id: netstream_generic.h,v 1.9 2003/11/11 10:13:25 grumbel Exp $
**
**  ClanLib Game SDK
**  Copyright (C) 2003  The ClanLib Team
**  For a total list of contributers see the file CREDITS.
**
**  This library is free software; you can redistribute it and/or
**  modify it under the terms of the GNU Lesser General Public
**  License as published by the Free Software Foundation; either
**  version 2.1 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
**  Lesser General Public License for more details.
**
**  You should have received a copy of the GNU Lesser General Public
**  License along with this library; if not, write to the Free Software
**  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*/

#ifndef header_netstream_generic
#define header_netstream_generic

#if _MSC_VER > 1000
#pragma once
#endif

#ifdef _MSC_VER
#pragma warning(disable : 4786)
#endif

#include "API/Core/System/event_trigger.h"
#include "API/Core/System/mutex.h"
#include <queue>
#include <string>

class CL_NetComputer;
class CL_NetComputer_Generic;
class CL_NetSession_Generic;

class CL_NetStream_Generic
{
//! Construction:
public:
	//: Connect constructor.
	CL_NetStream_Generic(
		const std::string &netstream,
		CL_NetComputer &dest,
		CL_NetSession_Generic *session);

	//: Received constructor.
	CL_NetStream_Generic(
		int channel_id,
		CL_NetComputer_Generic *dest,
		CL_NetSession_Generic *session);

	~CL_NetStream_Generic();

//! Attributes:
public:
	//: Flag to be raised by netsession when all data has been written to a channel.
	CL_EventTrigger write_trigger;

	//: Flag to be raised by netsession when there is data to be read from the channel.
	CL_EventTrigger read_trigger;

	//: Receive buffer queue:
	std::queue<std::string> receive_queue;

	//: Syncronized access to member variables.
	CL_Mutex mutex;

	//: NetSession that stream is connected to.
	CL_NetSession_Generic *session;

	//: Computer the stream is communicating with.
	CL_NetComputer_Generic *computer;

	//: Stream channel identifier.
	int channel_id;
	
	//: True if connection was closed.
	bool closed;

	//: Returns the reference count of the netstream.
	int get_ref_count() const { return ref_count; }

//! Operations:
public:
	//: Increases the reference count.
	void add_ref();

	//: Decreases the reference count. If the count reaches zero, deletes this.
	int release_ref();

//! Implementation:
private:
	//: Reference counter.
	int ref_count;
};

#endif