Esempi in C++ (Cpp) per update_sensor_from_max

Esempio n. 1

File: is-max-plugin.c Progetto: mgr01/indicator-sensors

static void
on_sensor_value_notify(IsSensor *sensor,
                       GParamSpec *pspec,
                       gpointer user_data)
{
  IsMaxPlugin *self;
  IsMaxPluginPrivate *priv;
  gdouble value;

  self = IS_MAX_PLUGIN(user_data);
  priv = self->priv;

  value = is_sensor_get_value(sensor);
  if (value - IS_SENSOR_VALUE_UNSET <= DBL_EPSILON)
  {
    is_debug("max", "sensor value for sensor %s is unset - ignoring",
             is_sensor_get_label(sensor));
    goto exit;
  }

  if (value > priv->max_value && sensor != priv->max)
  {
    // let's see if we can get away without taking a reference on sensor
    priv->max = sensor;

    is_message("max", "New highest value sensor: %s (value %f)",
               is_sensor_get_label(sensor), value);
  }

  if (sensor == priv->max)
  {
    priv->max_value = value;

    update_sensor_from_max(self);
  }

exit:
  return;
}

Esempio n. 2

File: is-dynamic-plugin.c Progetto: alexmurray/indicator-sensors

static void
on_sensor_value_notify(IsSensor *sensor,
                       GParamSpec *pspec,
                       gpointer user_data)
{
  IsDynamicPlugin *self;
  IsDynamicPluginPrivate *priv;
  RateData *data;
  gdouble value, dv, dt, rate;
  gint64 now;

  self = IS_DYNAMIC_PLUGIN(user_data);
  priv = self->priv;

  value = is_sensor_get_value(sensor);

  if (value - IS_SENSOR_VALUE_UNSET <= DBL_EPSILON)
  {
    is_debug("dynamic", "sensor value for sensor %s is unset - ignoring",
             is_sensor_get_label(sensor));
    goto exit;
  }

  now = g_get_monotonic_time();

  data = g_object_get_data(G_OBJECT(sensor), DYNAMIC_RATE_DATA_KEY);
  if (data == NULL)
  {
    is_debug("dynamic", "Creating new dynamic rate data for sensor: %s",
             is_sensor_get_label(sensor));

    // allocate data
    data = g_malloc0(sizeof(*data));
    data->rate = 0.0f;
    data->last_value = value;
    data->last_time = now;
    g_object_set_data_full(G_OBJECT(sensor), DYNAMIC_RATE_DATA_KEY,
                           data, g_free);
    goto exit;
  }

  is_debug("dynamic", "Got existing rate data for sensor: %s - rate: %f, last_value %f, last_time %"PRId64"",
           is_sensor_get_label(sensor),
           data->rate,
           data->last_value,
           data->last_time);
  dv = value - data->last_value;
  dt = ((double)(now - data->last_time) /
        (double)G_USEC_PER_SEC);

  // convert rate to units per second
  rate = fabs(dv / dt);
  is_debug("dynamic", "abs rate of change of sensor %s: %f (t0: %f, t-1: %f, dv: %f, dt: %f)",
           is_sensor_get_label(sensor), rate, value, data->last_value,
           dv, dt);

  // calculate exponentially weighted moving average of rate
  rate = (EWMA_ALPHA * rate) + ((1 - EWMA_ALPHA) * data->rate);
  data->rate = rate;
  data->last_value = value;
  data->last_time = now;
  is_debug("dynamic", "EWMA abs rate of change of sensor %s: %f",
           is_sensor_get_label(sensor), rate);

  if (rate > priv->max_rate && sensor != priv->max)
  {
    // let's see if we can get away without taking a reference on sensor
    priv->max = sensor;

    is_message("dynamic", "New highest EWMA rate sensor: %s (rate %f)",
               is_sensor_get_label(sensor), rate);
  }

  if (sensor == priv->max)
  {
    priv->max_rate = rate;

    update_sensor_from_max(self);
  }

exit:
  return;
}