qnxtimertest.c

#include <stdio.h>
#include <time.h>
#include <sys/netmgr.h>
#include <sys/neutrino.h>
#include <sys/time.h>

#define MY_PULSE_CODE   _PULSE_CODE_MINAVAIL

typedef union {
        struct _pulse   pulse;
        /* your other message structures would go
           here too */
} my_message_t;

main()
{
   struct sigevent         event;
   struct itimerspec       itime;
   timer_t                 timer_id;
   int                     chid;
   int                     rcvid;
   my_message_t            msg;
   struct timeval          tv;
   time_t                  start_time;

   chid = ChannelCreate(0);

   event.sigev_notify = SIGEV_PULSE;
   event.sigev_coid = ConnectAttach(ND_LOCAL_NODE, 0,
                                    chid,
                                    _NTO_SIDE_CHANNEL, 0);
   event.sigev_priority = getprio(0);
   event.sigev_code = MY_PULSE_CODE;
   timer_create(CLOCK_MONOTONIC /*CLOCK_REALTIME*/, &event, &timer_id);

   itime.it_value.tv_sec = 150;
   itime.it_value.tv_nsec = 0;
   itime.it_interval.tv_sec = 0;
   itime.it_interval.tv_nsec = 0;
   timer_settime(timer_id, 0, &itime, NULL);

   gettimeofday(&tv, 0);
   start_time = tv.tv_sec;
   for (;;) {
       rcvid = MsgReceive(chid, &msg, sizeof(msg), NULL);
       if (rcvid == 0) { /* we got a pulse */
            if (msg.pulse.code == MY_PULSE_CODE) {
                gettimeofday(&tv, 0);
                printf("Got a pulse: %d seconds\n", (tv.tv_sec - start_time));
                break;
            }
       }
   }
}