scheduler.h

模拟器提供了一个简单易用的平台

/*
 * File: scheduler.h
 * Author: Suman Banerjee <[e-mail]>
 * Date: July 31, 2001
 * Terms: GPL
 *
 * myns simulator
 */


#ifndef _SCHEDULER_H_
#define _SCHEDULER_H_

#include "heap.h"
#include <constants.h>

enum EventType {
  EVENT_START,
  EVENT_STOP,
  EVENT_NODE,
  EVENT_AGENT,
  EVENT_TIMER,
  EVENT_PRINT_SIMULATION_STATUS
};

extern NamedConstant const_clock_precision_digits;
#define CONST_CLOCK_PRECISION_DIGITS (const_clock_precision_digits.getval().u.i)
#define PRECISION_TIME(x) ((long long)(x * ten_to_power_precision_digits) + 0.5)

struct EventInfo {
  EventType et; // Type of the event
  void *object; // On which object the event is defined
  /* object will be Node or Agent (to be defined later) */
  void *params; // Other params to use for the object, if any.

  EventInfo (EventType e, void *o, void *p) {
    et = e;
    object = o;
    params  = p;
  };
};

class Scheduler {

  private :
    static Heap *time_heap;
    static double curr_time;
    static int timer_id;

    public :
    Scheduler();
    ~Scheduler();

    static void SchedulerClassInit();
    static void SchedulerClassTerminate();

    static void * AddAbsoluteEvent (double at_time, EventInfo *event);
    static void * AddRelativeEvent (double rel_time, EventInfo *event);

    static EventInfo * DeleteEvent (void *pos);
    static EventInfo * GetNextEvent (void);

    static double Clock(void);
    
};

#endif