Beispiel #1
0
void
NotifySensorChange(const SensorData &aSensorData) {
  SensorObserverList &observers = GetSensorObservers(aSensorData.sensor());

  AssertMainThread();
  
  observers.Broadcast(aSensorData);
}
Beispiel #2
0
void
RegisterSensorObserver(SensorType aSensor, ISensorObserver *aObserver) {
  SensorObserverList &observers = GetSensorObservers(aSensor);

  AssertMainThread();
  
  observers.AddObserver(aObserver);
  if(observers.Length() == 1) {
    EnableSensorNotifications(aSensor);
  }
}
Beispiel #3
0
void
UnregisterSensorObserver(SensorType aSensor, ISensorObserver *aObserver) {
  SensorObserverList &observers = GetSensorObservers(aSensor);

  AssertMainThread();
  
  observers.RemoveObserver(aObserver);
  if(observers.Length() == 0) {
    DisableSensorNotifications(aSensor);
  }
}
Beispiel #4
0
void
UnregisterSensorObserver(SensorType aSensor, ISensorObserver *aObserver) {
  AssertMainThread();

  if (!gSensorObservers) {
    return;
  }

  SensorObserverList &observers = GetSensorObservers(aSensor);
  if (!observers.RemoveObserver(aObserver) || observers.Length() > 0) {
    return;
  }
  DisableSensorNotifications(aSensor);

  // Destroy sSensorObservers only if all observer lists are empty.
  for (int i = 0; i < NUM_SENSOR_TYPE; i++) {
    if (gSensorObservers[i].Length() > 0) {
      return;
    }
  }
  delete [] gSensorObservers;
  gSensorObservers = nullptr;
}