示例#1
0
    public static Task CreateHandledTask(TaskScheduled mainTask,
                                         TaskScheduled onSuccessTask,
                                         TaskScheduled onCancelationTask,
                                         TaskCreationOptions tco,
                                         CancellationToken cancellationToken,
                                         params TaskScheduled[] timeouts)
    {
        Task             tsk = null;
        ManualResetEvent me  = new ManualResetEvent(false);

        if (timeouts == null || timeouts.Length < 1 || timeouts[0] == null)
        {
            tsk = CreateHandledTask(mainTask.action, tco, cancellationToken);
            me.Set();
        }
        else
        {
            bool isCancelation   = false;
            bool isSuccess       = true;
            Task NonBlockCtxTask = CreateHandledTask(() =>
            {
                tsk = CreateHandledTask(mainTask.action, tco, cancellationToken);
                me.Set();
                int qtdt = timeouts.Count(st => st.action != null);
                CountdownEvent cde_pas = new CountdownEvent(3);
                CountdownEvent cde_pat = new CountdownEvent(qtdt);
                Parallel.ForEach <TaskScheduled>(timeouts, (ts) =>
                {
                    try
                    {
                        bool itsOnTime = tsk.Wait(ts.waitTime, cancellationToken);
                        cde_pat.Signal();
                        if (!itsOnTime)
                        {
                            isSuccess = false;
                            Task tact = CreateHandledTask(ts.action, TaskCreationOptions.None, cancellationToken);
                        }
                    }
                    catch (OperationCanceledException oce)
                    {
                        isSuccess = false;
                        cde_pat.Signal(cde_pat.CurrentCount);
                        isCancelation = true;
                    }
                });
                try
                {
                    isSuccess &= cde_pat.Wait(System.Threading.Timeout.Infinite, cancellationToken) && !isCancelation;
                }
                catch (OperationCanceledException oce)
                {
                    isCancelation = true;
                    isSuccess     = false;
                }
                finally
                {
                    cde_pas.Signal();
                }
                try
                {
                    if (isCancelation && onCancelationTask != null)
                    {
                        Thread.Sleep(onCancelationTask.waitTime);
                        Task tcn = CreateHandledTask(onCancelationTask.action);
                    }
                }
                catch { }
                finally {
                    cde_pas.Signal();
                }
                try
                {
                    if (isSuccess && onSuccessTask != null)
                    {
                        Thread.Sleep(onSuccessTask.waitTime);
                        Task tcn = CreateHandledTask(onSuccessTask.action);
                    }
                }
                catch { }
                finally
                {
                    cde_pas.Signal();
                }
                cde_pas.Wait(System.Threading.Timeout.Infinite);
            }, TaskCreationOptions.None, cancellationToken);
        }
        me.WaitOne();
        return(tsk);
    }
示例#2
0
 private void ScheduleInternal(TaskContext context)
 {
     queue.Enqueue(context);
     TaskScheduled?.Invoke(this, new TaskEventArgs(context.Tag));
     Next(cts.Token);
 }