mac-timersmr.h
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- /* -*- 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.*/
- /**
- * Modified 2006 by Federico Maguolo, Nicola Baldo and Simone Merlin
- * (SIGNET lab, University of Padova, Department of Information Engineering)
- */
- #ifndef __mac_timers_h_mr__
- #define __mac_timers_h_mr__
- /* ======================================================================
- Timers
- ====================================================================== */
- class Mac802_11mr;
- class Mr_MacTimer : public Handler {
- public:
- Mr_MacTimer(Mac802_11mr* 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_11mr *mac;
- int busy_;
- int paused_;
- Event intr;
- double stime; // start time
- double rtime; // remaining time
- };
- class Mr_BackoffTimer : public Mr_MacTimer {
- public:
- Mr_BackoffTimer(Mac802_11mr *m) : Mr_MacTimer(m), difs_wait(0.0) {}
- 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 Mr_DeferTimer : public Mr_MacTimer {
- public:
- Mr_DeferTimer(Mac802_11mr *m) : Mr_MacTimer(m) {}
- void start(double);
- void handle(Event *e);
- };
- class Mr_IFTimer : public Mr_MacTimer {
- public:
- Mr_IFTimer(Mac802_11mr *m) : Mr_MacTimer(m) {}
- void handle(Event *e);
- };
- class Mr_NavTimer : public Mr_MacTimer {
- public:
- Mr_NavTimer(Mac802_11mr *m) : Mr_MacTimer(m) {}
- void handle(Event *e);
- };
- class Mr_RxTimer : public Mr_MacTimer {
- public:
- Mr_RxTimer(Mac802_11mr *m) : Mr_MacTimer(m) {}
- void handle(Event *e);
- };
- class Mr_TxTimer : public Mr_MacTimer {
- public:
- Mr_TxTimer(Mac802_11mr *m) : Mr_MacTimer(m) {}
- void handle(Event *e);
- };
- #endif /* __mac_timers_h_mr__ */