module-send.h

ns2中跨层对网路性能优化较复杂

//
// Copyright (c) 2006 Regents of the SIGNET lab, University of Padova.
// All rights reserved.
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// 2. Redistributions in binary form must reproduce the above copyright
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//    derived from this software without specific prior written permission.
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#ifndef _MODULESEND_
#define _MODULESEND_

#include <module.h>

#define DELAYINTERVAL 1		// size of the intervl in which is extract randomly the delay to be used
#define DEFAULT_SIZE 1000	// default size of the packet
#define DEFAULT_CLMSG_VERBOSITY 1	// deafault verbosity of the cross layer messages

class ModuleSend;

/*
	Timer used to schedule packets by ModuleSend class
*/
class SendTimer : public TimerHandler
{
	public:
		SendTimer(ModuleSend *m) : TimerHandler() { m_= m; }
	
	protected:
		virtual void expire(Event *e);
		ModuleSend* m_;
};

/*
	Module that send a packet each delay interval
	It starts after the "start" TCL command and stops after the "stop" TCL command
*/
class ModuleSend : public Module
{
	friend class SendTimer;
	public:
		ModuleSend();
		~ModuleSend();
		
		static int uidcnt_;
		void recv(Packet*){}
		// TCL command interpreter
		virtual int command(int argc, const char*const* argv);
		// cross-layer command interpreter
		virtual int crLayCommand(ClMessage* m);
		// set ctrl message type
		void setClMsgType(ClMessage_t type);
		// set ctrl message type
		ClMessage_t getClMsgType();

	protected:
		void expire();
		int dstPort_;
		int dstAddr_;

	private:		
		void initPkt(Packet* p);
		// start to send packets
		void start();
		
		// stop to send packets
		void stop();
		
		void recv(Packet* p, Handler* h);
		
		
		// priod between the transmission ot two packets
		double period_;
		int pktSize_;
		
		// timer to schedule period between packet transmission
		SendTimer sendTmr_;
		
		ClMessage_t clMsgType_;
		
};

#endif