burster.hh

来自「COPE the first practical network coding 」· HH 代码 · 共 50 行

#ifndef CLICK_BURSTER_HH
#define CLICK_BURSTER_HH
#include <click/element.hh>
#include <click/task.hh>
#include <click/timer.hh>
CLICK_DECLS

/*
 * =c
 * Burster(I, N)
 * =s packet scheduling
 * pull-to-push converter
 * =d
 * Pulls N packets each interval I (seconds) from its input.
 * Pushes them out its single output. The interval can be
 * a floating point number.
 *
 * There are usually Queues both upstream and downstream
 * of Burster elements.
 * 
 * =n
 * The UNIX and Linux timers have granularity of about 10
 * milliseconds, so this Burster can only produce high packet
 * rates by being bursty.
 */

class Burster : public Element { public:
  
  Burster();
  ~Burster();
  
  const char *class_name() const                { return "Burster"; }
  const char *processing() const       { return PULL_TO_PUSH; }
  
  int configure(Vector<String> &, ErrorHandler *);
  int initialize(ErrorHandler *);

  void run_timer();
  
 private:
  
  int _npackets;
  Timer _timer;
  int _interval;
  
};

CLICK_ENDDECLS
#endif