C++ (Cpp) dispatch_clock_update Examples

Example #1

File: wrappers.c Project: Mettbrot/tvheadend

int
tvh_write(int fd, const void *buf, size_t len)
{
    time_t next = dispatch_clock + 25;
    ssize_t c;

    while (len) {
        c = write(fd, buf, len);
        if (c < 0) {
            if (ERRNO_AGAIN(errno)) {
                if (dispatch_clock > next)
                    break;
                usleep(100);
                dispatch_clock_update(NULL);
                continue;
            }
            break;
        }
        len -= c;
        buf += c;
    }

    return len ? 1 : 0;
}

Example #2

File: main.c Project: 2crazyzgb/tvheadend

static void
mainloop(void)
{
  gtimer_t *gti;
  gti_callback_t *cb;
  struct timespec ts;
#if ENABLE_GTIMER_CHECK
  int64_t mtm;
  const char *id;
  const char *fcn;
#endif

  while(tvheadend_running) {
    dispatch_clock_update(&ts);

    /* Global timers */
    pthread_mutex_lock(&global_lock);

    // TODO: there is a risk that if timers re-insert themselves to
    //       the top of the list with a 0 offset we could loop indefinitely
    
#if 0
    tvhdebug("gtimer", "now %ld.%09ld", ts.tv_sec, ts.tv_nsec);
    LIST_FOREACH(gti, &gtimers, gti_link)
      tvhdebug("gtimer", "  gti %p expire %ld.%08ld",
               gti, gti->gti_expire.tv_sec, gti->gti_expire.tv_nsec);
#endif

    while((gti = LIST_FIRST(&gtimers)) != NULL) {
      
      if ((gti->gti_expire.tv_sec > ts.tv_sec) ||
          ((gti->gti_expire.tv_sec == ts.tv_sec) &&
           (gti->gti_expire.tv_nsec > ts.tv_nsec))) {
        ts = gti->gti_expire;
        break;
      }

#if ENABLE_GTIMER_CHECK
      mtm = getmonoclock();
      id = gti->gti_id;
      fcn = gti->gti_fcn;
#endif
      cb = gti->gti_callback;

      LIST_REMOVE(gti, gti_link);
      gti->gti_callback = NULL;

      cb(gti->gti_opaque);

#if ENABLE_GTIMER_CHECK
      tvhtrace("gtimer", "%s:%s duration %"PRId64"ns", id, fcn, getmonoclock() - mtm);
#endif
    }

    /* Bound wait */
    if ((LIST_FIRST(&gtimers) == NULL) || (ts.tv_sec > (dispatch_clock + 1))) {
      ts.tv_sec  = dispatch_clock + 1;
      ts.tv_nsec = 0;
    }

    /* Wait */
    pthread_cond_timedwait(&gtimer_cond, &global_lock, &ts);
    pthread_mutex_unlock(&global_lock);
  }
}