private static NodeManager GetInstance()
{
//use local var because we set _instance to null on shutdown and could
//cause concurrency problem
NodeManager instance = _instance;
if (instance == null)
{
lock (_instanceLock)
{
if (_instance == null)
{
_instance = new NodeManager();
}
instance = _instance;
}
}
return instance;
}
internal void Shutdown()
{
if (Counters != null)
{
Counters.ResetCounters();
Counters.Shutdown();
}
if (InMessageDispatcher != null)
{
InMessageDispatcher.Dispose();
}
if (_queuedMessageCounterTimer != null)
{
_queuedMessageCounterTimer.Change(Timeout.Infinite, Timeout.Infinite);
_queuedMessageCounterTimer.Dispose();
}
if (_aggregateCounterTickTimer != null)
{
_aggregateCounterTickTimer.Change(Timeout.Infinite, Timeout.Infinite);
_aggregateCounterTickTimer.Dispose();
}
if (NodeGroups != null)
{
for (int i = 0; i < NodeGroups.Count; i++)
{
NodeGroups[i].Shutdown();
}
}
lock (_instanceLock)
{
_initialized = false;
//Release instance to free memory and to get initialized fresh.
_instance = null;
}
}