Search  

---

C:/temp/src/j2k/QNX4/TimerThread.hpp

Go to the documentation of this file.

#ifndef __J2K__TimerThread_HPP__
#define __J2K__TimerThread_HPP__

#include <j2k/Fred/Basic.hpp>
#include <j2k/Fred/Boolean.hpp>
#include <j2k/Fred/StdTypes.hpp>

#include <j2k/Fred/QNX/MsgThread.hpp>

#include <time.h>
#include <sys/proxy.h>
#include <signal.h>
   
// Default Timer Arguments
#define  DEFAULT_TIMER_STACK    4096
#define  DEFAULT_TIMER_ALGO     SCHED_RR
#define  DEFAULT_TIMER_PRIO     19
#define  DEFAULT_TIMER_PERIOD   120000000L

// The time period is in nanosec, which is 120 ms by default

class TimerThread : public MsgThread {

public:

  TimerThread();
 
  virtual ~TimerThread();

  void start( timespec& period = DEFAULT_TIMER_PERIOD,
                   int  algo   = DEFAULT_TIMER_ALGO,
                   int  prio   = DEFAULT_TIMER_PRIO,
                size_t  stack  = DEFAULT_TIMER_STACK  );

  void stop();

  // timer query functions
  int getTime( timerspec& output ) {
    return timer_gettime( Timer_ID, &output);
  }

  timer_t  getTimerID() {
    return Timer_ID;
  }

  // Timer class Users should override this function
  virtual void tick() = 0;

protected:
  timer_t  Timer_ID;
  pid_t    Proxy_ID;

  static const int defaultMsg;

  // override
  virtual int message_filter( int m, char* data, pid_t mpid );
  virtual int MsgSort( void* msg, void* ptrThis, pid_t rPid, void* p );

};

#endif 

---