reschedule.cpp

ACE源码

/**
 * Reschedule.cpp,v 1.2 2004/01/01 23:03:38 shuston Exp
 *
 * Changing the interval
 */

#include "ace/OS_NS_time.h"
#include "ace/Log_Msg.h"
#include "ace/Reactor.h"
#include "ace/Event_Handler.h"

class MyTimerHandler : public ACE_Event_Handler
{
public:
  int handle_timeout (const ACE_Time_Value &current_time,
                      const void * = 0 )
  {
    time_t epoch = ((timespec_t)current_time).tv_sec;
    ACE_DEBUG ((LM_INFO,
                ACE_TEXT ("handle_timeout: %s"),
                ACE_OS::ctime(&epoch)));
    return 0;
  }

};

// Listing 1 code/ch07
class SigintHandler : public ACE_Event_Handler
{
public:
  SigintHandler (long timerId, int currentInterval)
    : ACE_Event_Handler(),
      timerId_(timerId),
      currentInterval_(currentInterval)
  {
  }

  int handle_signal (int,
                     siginfo_t * = 0,
                     ucontext_t * = 0)
  {
    ACE_DEBUG ((LM_INFO,
                ACE_TEXT ("Resetting interval of timer ")
                ACE_TEXT ("%d to %d\n"),
                this->timerId_,
                ++this->currentInterval_));
    ACE_Time_Value newInterval (this->currentInterval_);
    ACE_Reactor::instance()->
      reset_timer_interval (this->timerId_, newInterval);
    return 0;
  }

private:
  long timerId_;
  int currentInterval_;
};
// Listing 1

int ACE_TMAIN (int, ACE_TCHAR *[])
{
  ACE_Time_Value initialDelay (3);
  ACE_Time_Value interval (5);

  // Listing 2 code/ch07
  MyTimerHandler *handler = new MyTimerHandler ();

  long timerId =
    ACE_Reactor::instance ()->schedule_timer (handler,
                                              0,
                                              initialDelay,
                                              interval);
  // Listing 2

  // Listing 3 code/ch07
  SigintHandler *handleSigint =
    new SigintHandler (timerId, 5);
  ACE_Reactor::instance ()->register_handler (SIGINT,
                                              handleSigint);
  // Listing 3

  ACE_Reactor::instance ()->run_reactor_event_loop ();
  return 0;
}