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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 CcuSignalHandler;
#if 0
template <class ITEM> class CcuListOf;
#else
#include "List.h"
#endif
class CcuCoreTimer;
class CcuTimerSet {
friend class CcuCoreTimer;
private:
CcuCoreTimer* FirstTimer;
#ifndef CPLUS_BUG19
CcuListOf <CcuCoreTimer> OtherTimers;
#else
CcuList OtherTimers;
#endif
bool FirstIsUpdated;
CcuCoreTimer* ExtractNextActive ();
public:
inline CcuTimerSet () : FirstTimer (0), OtherTimers (), FirstIsUpdated (false) {}
inline ~CcuTimerSet () {}
//inline bool IsEmpty () const { return bool (FirstTimer == 0); } seems useless (10 may 96)
};
class CcuCoreTimer {
friend class CcuTimerSet;
public:
enum timer_status { Active, Inactive };
protected:
static int IsInactive (CcuCoreTimer*);
CcuTimerSet* MySet;
Millisecond NextDate;
Millisecond Period;
int PulsesLeft;
timer_status StatusFlag;
void Activate ();
void Schedule (Millisecond);
void Reschedule ();
/*?public?*/
CcuCoreTimer (Millisecond, int, CcuTimerSet*);
virtual ~CcuCoreTimer ();
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 (CcuTimerSet*);
};
class CcuBaseTimer : public CcuCoreTimer {
private:
static CcuSignalHandler* TimeOutHandler;
static CcuTimerSet* TimerSet;
static void HandleSignal (int);
static void ClassInit ();
protected:
void SetAlarm (Millisecond);
void StopAlarm ();
public:
CcuBaseTimer (Millisecond, int = -1);
~CcuBaseTimer ();
};
typedef void (*CcuTimerFun) (Millisecond);
class CcuTimer : public CcuBaseTimer {
protected:
void (*Handler) (Millisecond);
void Handle (Millisecond);
public:
CcuTimer (Millisecond, void (*) (Millisecond), int = -1);
~CcuTimer ();
inline void SetHandler (void (*h) (Millisecond)) { Handler = h; }
};
#endif /* Timer_H_ */
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