C++ (Cpp) g_timeout_set_expiration Examples

Example #1

File: gmain.c Project: Akheon23/chromecast-mirrored-source.toolchain

static gboolean 
g_timeout_prepare  (gpointer  source_data, 
		    GTimeVal *current_time,
		    gint     *timeout,
		    gpointer  user_data)
{
  glong msec;
  GTimeoutData *data = source_data;

  msec = (data->expiration.tv_sec  - current_time->tv_sec) * 1000 +
         (data->expiration.tv_usec - current_time->tv_usec) / 1000;

  if (msec < 0)
    msec = 0;
  else if (msec > data->interval)
    {
      /* The system time has been set backwards, so we 
       * reset the expiration time to now + data->interval;
       * this at least avoids hanging for long periods of time.
       */
      g_timeout_set_expiration (data, current_time);
      msec = data->interval;
    }

  *timeout = msec;

  return (msec == 0);
}

Example #2

File: tsource.c Project: debrouxl/tiemu

static gboolean
g_timeout_prepare  (GSource  *source,
		    gint     *timeout)
{
  glong sec;
  glong msec;
  GTimeVal current_time;
  
  GTimeoutSource *timeout_source = (GTimeoutSource *)source;

  g_source_get_current_time (source, &current_time);

  sec = timeout_source->expiration.tv_sec - current_time.tv_sec;
  msec = (timeout_source->expiration.tv_usec - current_time.tv_usec) / 1000;

  /* We do the following in a rather convoluted fashion to deal with
   * the fact that we don't have an integral type big enough to hold
   * the difference of two timevals in millseconds.
   */
  if (sec < 0 || (sec == 0 && msec < 0))
    msec = 0;
  else
    {
      glong interval_sec = timeout_source->interval / 1000;
      glong interval_msec = timeout_source->interval % 1000;

      if (msec < 0)
	{
	  msec += 1000;
	  sec -= 1;
	}
      
      if (sec > interval_sec ||
	  (sec == interval_sec && msec > interval_msec))
	{
	  /* The system time has been set backwards, so we
	   * reset the expiration time to now + timeout_source->interval;
	   * this at least avoids hanging for long periods of time.
	   */
	  g_timeout_set_expiration (timeout_source, &current_time);
	  msec = MIN (G_MAXINT, timeout_source->interval);
	}
      else
	{
	  msec = MIN (G_MAXINT, (guint)msec + 1000 * (guint)sec);
	}
    }

  *timeout = (gint)msec;
  
  return msec == 0;
}

Example #3

File: tsource.c Project: debrouxl/tiemu

GSource *
g_timeout2_source_new (guint interval)
{
  GSource *source = g_source_new (&g_timeout2_funcs, sizeof (GTimeoutSource));
  GTimeoutSource *timeout_source = (GTimeoutSource *)source;
  GTimeVal current_time;

  timeout_source->interval = interval;

  g_get_current_time (&current_time);
  g_timeout_set_expiration (timeout_source, &current_time);
  
  return source;
}

Example #4

File: tsource.c Project: debrouxl/tiemu

static gboolean
g_timeout_dispatch (GSource    *source,
		    GSourceFunc callback,
		    gpointer    user_data)
{
#if 0	// as GLib
  GTimeoutSource *timeout_source = (GTimeoutSource *)source;

  if (!callback)
    {
      g_warning ("Timeout source dispatched without callback\n"
		 "You must call g_source_set_callback().");
      return FALSE;
    }
 
  if (callback (user_data))
    {
      GTimeVal current_time;

      g_source_get_current_time (source, &current_time);
      g_timeout_set_expiration (timeout_source, &current_time);

      return TRUE;
    }
  else
    return FALSE;

#else
	GTimeoutSource *timeout_source = (GTimeoutSource *)source;
	GTimeVal current_time;

	g_source_get_current_time (source, &current_time);
    g_timeout_set_expiration (timeout_source, &current_time);

	return (callback (user_data)); 
#endif
}

Example #5

File: gmain.c Project: Akheon23/chromecast-mirrored-source.toolchain

static gboolean
g_timeout_dispatch (gpointer source_data, 
		    GTimeVal *dispatch_time,
		    gpointer user_data)
{
  GTimeoutData *data = source_data;

  if (data->callback (user_data))
    {
      g_timeout_set_expiration (data, dispatch_time);
      return TRUE;
    }
  else
    return FALSE;
}

Example #6

File: gmain.c Project: Akheon23/chromecast-mirrored-source.toolchain

guint 
g_timeout_add_full (gint           priority,
		    guint          interval, 
		    GSourceFunc    function,
		    gpointer       data,
		    GDestroyNotify notify)
{
  GTimeoutData *timeout_data = g_new (GTimeoutData, 1);
  GTimeVal current_time;

  timeout_data->interval = interval;
  timeout_data->callback = function;
  g_get_current_time (&current_time);

  g_timeout_set_expiration (timeout_data, &current_time);

  return g_source_add (priority, FALSE, &timeout_funcs, timeout_data, data, notify);
}