private void TryStartNewThread(IExecutionQueue executor)
{
BEGIN:
if (_disposed) return;
//Second check to ensure concurrency threshold would not be exceeded.
var currentConcurrency = Interlocked.Increment(ref _currentConcurrency);
if (currentConcurrency > _maxConcurrency)
{
currentConcurrency = Interlocked.Decrement(ref _currentConcurrency);
if (currentConcurrency == 0)
{
goto BEGIN;
}
return;
}
ExecutionEnvelope envelope;
if (executor == null)
{
envelope = TakeNextTask();
}
else
{
envelope = executor.Dequeue();
}
if (envelope == null)
{
Interlocked.Decrement(ref _currentConcurrency);
return;
}
if (Logger.IsDebugEnabled)
{
Logger.Debug("Starting new execution thread.");
}
var executionInfo = new ExecutionInfo { CurrentTask = envelope };
var tplTask = new Task(PerformTasks, executionInfo);
executionInfo.TakeFreeCell(_executionInfos, _threadNames);
executionInfo.TplTask = tplTask;
tplTask.Start();
}
