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C:/temp/src/j2k/nto/1/Timer.hpp

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// Required library:  -lrt

#ifndef Timer_HPP
#define Timer_HPP

#include <j2k/Fred/Standard.hpp>
#include <j2k/nto/Basic_PThread.hpp>

#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#include <signal.h>
#include <sys/time.h>

#if !defined( linux )

// Signal information
#include <sys/siginfo.h>

#endif


#if defined( __QNXNTO__ )

#include <sys/neutrino.h>

// Local Node
#include <sys/netmgr.h>

#endif

// 16-17
#define  TimerSignal  SIGUSR1  

class Timer;

// Only one timer can exist at a given time
// Timer*  theTimer = NULL;

class Timer : public Basic_PThread {

public:

const ULONG Period_1_ms   =   1000000L; 
const ULONG Period_10_ms  =  10000000L; 
const ULONG Period_20_ms  =  20000000L; 
const ULONG Period_50_ms  =  50000000L; 
const ULONG Period_100_ms = 100000000L;
const ULONG Period_250_ms = 250000000L;
const ULONG Period_500_ms = 500000000L;
const ULONG Period_750_ms = 750000000L;


protected:
  static Timer* theTimer;



  Timer( ULONG nsec = 0, ULONG sec = 0 );

  virtual void run();

  inline double getSpent();
  inline double getElapsed( _uint64 started );
  inline _uint64 getCycles();

  // Use the global variable for to call the real handler
  static void wrapper( int signo )
  {
    assert( signo == TimerSignal );
    theTimer->tick( signo ); 
  }

  // Should be implement by children class
  virtual void tick( int signo ) = 0;


private:
  clockid_t         timerid;
  struct sigevent   event;
  struct itimerspec t;

#if defined( __QNXNTO__ )

  int                  pulse_id;
  int                  timer_pid;
  int                  chid;

  timer_t              timer_id;
  struct _pulse        pulse;

#endif


};

#endif

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