mac-simple.h
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- /*
- * mac-simple.h
- * Copyright (C) 2003 by the University of Southern California
- * $Id: mac-simple.h,v 1.6 2005/08/25 18:58:07 johnh Exp $
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- *
- *
- * The copyright of this module includes the following
- * linking-with-specific-other-licenses addition:
- *
- * In addition, as a special exception, the copyright holders of
- * this module give you permission to combine (via static or
- * dynamic linking) this module with free software programs or
- * libraries that are released under the GNU LGPL and with code
- * included in the standard release of ns-2 under the Apache 2.0
- * license or under otherwise-compatible licenses with advertising
- * requirements (or modified versions of such code, with unchanged
- * license). You may copy and distribute such a system following the
- * terms of the GNU GPL for this module and the licenses of the
- * other code concerned, provided that you include the source code of
- * that other code when and as the GNU GPL requires distribution of
- * source code.
- *
- * Note that people who make modified versions of this module
- * are not obligated to grant this special exception for their
- * modified versions; it is their choice whether to do so. The GNU
- * General Public License gives permission to release a modified
- * version without this exception; this exception also makes it
- * possible to release a modified version which carries forward this
- * exception.
- *
- */
- #ifndef ns_mac_simple_h
- #define ns_mac_simple_h
- // Added by Sushmita to support event tracing (singal@nunki.usc.edu)
- #include "address.h"
- #include "ip.h"
- class MacSimpleWaitTimer;
- class MacSimpleSendTimer;
- class MacSimpleRecvTimer;
- // Added by Sushmita to support event tracing (singal@nunki.usc.edu)
- class EventTrace;
- class MacSimple : public Mac {
- //Added by Sushmita to support backoff
- friend class BackoffTimer;
- public:
- MacSimple();
- void recv(Packet *p, Handler *h);
- void send(Packet *p, Handler *h);
- void waitHandler(void);
- void sendHandler(void);
- void recvHandler(void);
- double txtime(Packet *p);
- // Added by Sushmita to support event tracing (singal@nunki.usc.edu)
- void trace_event(char *, Packet *);
- int command(int, const char*const*);
- EventTrace *et_;
- private:
- Packet * pktRx_;
- Packet * pktTx_;
- MacState rx_state_; // incoming state (MAC_RECV or MAC_IDLE)
- MacState tx_state_; // outgoing state
- int tx_active_;
- int fullduplex_mode_;
- Handler * txHandler_;
- MacSimpleWaitTimer *waitTimer;
- MacSimpleSendTimer *sendTimer;
- MacSimpleRecvTimer *recvTimer;
- int busy_ ;
- };
- class MacSimpleTimer: public Handler {
- public:
- MacSimpleTimer(MacSimple* m) : mac(m) {
- busy_ = 0;
- }
- virtual void handle(Event *e) = 0;
- virtual void restart(double time);
- virtual void start(double time);
- virtual void stop(void);
- inline int busy(void) { return busy_; }
- inline double expire(void) {
- return ((stime + rtime) - Scheduler::instance().clock());
- }
- protected:
- MacSimple *mac;
- int busy_;
- Event intr;
- double stime;
- double rtime;
- double slottime;
- };
- // Timer to use for delaying the sending of packets
- class MacSimpleWaitTimer: public MacSimpleTimer {
- public: MacSimpleWaitTimer(MacSimple *m) : MacSimpleTimer(m) {}
- void handle(Event *e);
- };
- // Timer to use for finishing sending of packets
- class MacSimpleSendTimer: public MacSimpleTimer {
- public:
- MacSimpleSendTimer(MacSimple *m) : MacSimpleTimer(m) {}
- void handle(Event *e);
- };
- // Timer to use for finishing reception of packets
- class MacSimpleRecvTimer: public MacSimpleTimer {
- public:
- MacSimpleRecvTimer(MacSimple *m) : MacSimpleTimer(m) {}
- void handle(Event *e);
- };
- #endif