/* -*-	Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- *//* * Copyright (c) 1997 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software *    must display the following acknowledgement: *	This product includes software developed by the Computer Systems *	Engineering Group at Lawrence Berkeley Laboratory. * 4. Neither the name of the University nor of the Laboratory may be used *    to endorse or promote products derived from this software without *    specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. *//* Ported from CMU/Monarch's code, nov'98 -Padma.*/#ifndef __mac_timers_h__#define __mac_timers_h__/* ======================================================================   Timers   ====================================================================== */class Mac802_11;class MacTimer : public Handler {public:	MacTimer(Mac802_11* m) : mac(m) {		busy_ = paused_ = 0; stime = rtime = 0.0;	}	virtual void handle(Event *e) = 0;	virtual void start(double time);	virtual void stop(void);	virtual void pause(void) { assert(0); }	virtual void resume(void) { assert(0); }	inline int busy(void) { return busy_; }	inline int paused(void) { return paused_; }	inline double expire(void) {		return ((stime + rtime) - Scheduler::instance().clock());	}protected:	Mac802_11	*mac;	int		busy_;	int		paused_;	Event		intr;	double		stime;	// start time	double		rtime;	// remaining time};class BackoffTimer : public MacTimer {public:	BackoffTimer(Mac802_11 *m) : MacTimer(m), difs_wait(0.0) {}	// ktnahm according to Federico	//	void	start(int cw, int idle);	void	start(int cw, int idle, double difs = 0.0);	void	handle(Event *e);	void	pause(void);	void	resume(double difs);private:	double	difs_wait;};class DeferTimer : public MacTimer {public:	DeferTimer(Mac802_11 *m) : MacTimer(m) {}	void	start(double);	void	handle(Event *e);};class IFTimer : public MacTimer {public:	IFTimer(Mac802_11 *m) : MacTimer(m) {}	void	handle(Event *e);};class NavTimer : public MacTimer {public:	NavTimer(Mac802_11 *m) : MacTimer(m) {}	void	handle(Event *e);};class RxTimer : public MacTimer {public:	RxTimer(Mac802_11 *m) : MacTimer(m) {}	void	handle(Event *e);};class TxTimer : public MacTimer {public:	TxTimer(Mac802_11 *m) : MacTimer(m) {}	void	handle(Event *e);};#endif /* __mac_timers_h__ */