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/*
* CENA C++ Utilities
*
* by Stephane Chatty
*
* Copyright 1992-1996
* Centre d'Etudes de la Navigation Aerienne (CENA)
*
* timers
*
* $Id$
* $CurLog$
*/
#ifndef Timer_H_
#define Timer_H_
#include "cplus_bugs.h"
#include "bool.h"
#include "Time.h"
class IvlSignalHandler;
#if 0
template <class ITEM> class IvlListOf;
#else
#include "List.h"
#endif
class IvlCoreTimer;
class IvlTimerSet {
friend class IvlCoreTimer;
private:
IvlCoreTimer* FirstTimer;
#ifndef CPLUS_BUG19
IvlListOf <IvlCoreTimer> OtherTimers;
#else
IvlList OtherTimers;
#endif
bool FirstIsUpdated;
IvlCoreTimer* ExtractNextActive ();
public:
inline IvlTimerSet () : FirstTimer (0), OtherTimers (), FirstIsUpdated (false) {}
inline ~IvlTimerSet () {}
//inline bool IsEmpty () const { return bool (FirstTimer == 0); } seems useless (10 may 96)
};
class IvlCoreTimer {
friend class IvlTimerSet;
public:
enum timer_status { Active, Inactive };
protected:
static int IsInactive (IvlCoreTimer*);
IvlTimerSet* MySet;
Millisecond NextDate;
Millisecond Period;
int PulsesLeft;
timer_status StatusFlag;
void Activate ();
void Schedule (Millisecond);
void Reschedule ();
/*?public?*/
IvlCoreTimer (Millisecond, int, IvlTimerSet*);
virtual ~IvlCoreTimer ();
public:
void ChangePeriod (Millisecond);
void ChangeNbPulses (int);
void Stop ();
void Restart ();
void Wait ();
inline Millisecond GetPeriod () const { return Period; }
inline int GetNbPulses () const { return PulsesLeft; }
inline timer_status GetStatus () const { return StatusFlag; }
protected:
/*?public?*/
virtual void Handle (Millisecond);
virtual void SetAlarm (Millisecond) = 0;
virtual void StopAlarm () = 0;
public:
static void Fire (IvlTimerSet*);
};
class IvlBaseTimer : public IvlCoreTimer {
private:
static IvlSignalHandler* TimeOutHandler;
static IvlTimerSet* TimerSet;
static void HandleSignal (int);
static void ClassInit ();
protected:
void SetAlarm (Millisecond);
void StopAlarm ();
public:
IvlBaseTimer (Millisecond, int = -1);
~IvlBaseTimer ();
};
typedef void (*IvlTimerFun) (Millisecond);
class IvlTimer : public IvlBaseTimer {
protected:
void (*Handler) (Millisecond);
void Handle (Millisecond);
public:
IvlTimer (Millisecond, void (*) (Millisecond), int = -1);
~IvlTimer ();
inline void SetHandler (void (*h) (Millisecond)) { Handler = h; }
};
#endif /* Timer_H_ */
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