System.Threading.Barrier.FinishPhase C# (CSharp) Method

        private void FinishPhase(bool observedSense)
        {
            // Execute the PHA in try/finally block to reset the variables back in case of it threw an exception
            if (_postPhaseAction != null)
            {
                try
                {
                    // Capture the caller thread ID to check if the Add/RemoveParticipant(s) is called from the PHA
                    _actionCallerID = Environment.CurrentManagedThreadId;
                    if (_ownerThreadContext != null)
                    {
                        var currentContext = _ownerThreadContext;

                        ContextCallback handler = s_invokePostPhaseAction;
                        if (handler == null)
                        {
                            s_invokePostPhaseAction = handler = InvokePostPhaseAction;
                        }
                        ExecutionContext.Run(_ownerThreadContext, handler, this);
                    }
                    else
                    {
                        _postPhaseAction(this);
                    }

                    _exception = null; // reset the exception if it was set previously
                }
                catch (Exception ex)
                {
                    _exception = ex;
                }
                finally
                {
                    _actionCallerID = 0;
                    SetResetEvents(observedSense);
                    if (_exception != null)
                        throw new BarrierPostPhaseException(_exception);
                }
            }
            else
            {
                SetResetEvents(observedSense);
            }
        }