public InitTimerEvent(MachineId client, TimerId tid, bool IsPeriodic, int period)
{
this.client = client;
this.IsPeriodic = IsPeriodic;
this.Period = period;
this.tid = tid;
}
/// <summary>
/// Start a timer.
/// </summary>
/// <param name="payload">Payload of the timeout event.</param>
/// <param name="IsPeriodic">Specifies whether a periodic timer is desired.</param>
/// <param name="period">Periodicity of the timeout events in ms.</param>
/// <returns>The id of the created timer.</returns>
protected TimerId StartTimer(object payload, int period, bool IsPeriodic)
{
// The specified period must be valid
this.Assert(period >= 0, "Timer period must be non-negative");
var mid = this.Runtime.CreateMachineId(this.Runtime.GetTimerMachineType());
var tid = new TimerId(mid, payload);
this.Runtime.CreateMachine(mid, this.Runtime.GetTimerMachineType(), new InitTimerEvent(this.Id, tid, IsPeriodic, period));
this.TimerIds.Add(tid);
return(tid);
}
private void InitializeTimer()
{
var e = (this.ReceivedEvent as InitTimerEvent);
this.Client = e.client;
this.IsPeriodic = e.IsPeriodic;
this.Period = e.Period;
this.tid = e.tid;
this.IsTimerEnabled = true;
this.timer = new System.Timers.Timer(Period);
if (!IsPeriodic)
{
this.timer.AutoReset = false;
}
this.timer.Elapsed += ElapsedEventHandler;
this.timer.Start();
}
/// <summary>
/// Stop the timer.
/// </summary>
/// <param name="timer">Id of the timer machine which is being stopped.</param>
/// <param name="flush">Clear the queue of all timeout events generated by "timer".</param>
protected async Task StopTimer(TimerId timer, bool flush = true)
{
// Check if the user is indeed trying to halt a valid timer
this.Assert(this.TimerIds.Contains(timer), "Illegal timer-id given to StopTimer");
this.TimerIds.Remove(timer);
this.Send(timer.mid, new HaltTimerEvent(this.Id, flush));
// Flush the buffer: the timer being stopped sends a markup event to the inbox of this machine.
// Keep dequeuing eTimeout events (with payload being the timer being stopped), until we see the markup event.
if (flush)
{
while (true)
{
var ev = await this.Receive(Tuple.Create(typeof(TimeoutFlushEvent), new Func <Event, bool>(e => true)),
Tuple.Create(typeof(TimerElapsedEvent), new Func <Event, bool>(e => (e as TimerElapsedEvent).Tid == timer)));
if (ev is TimeoutFlushEvent)
{
break;
}
}
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="tid">Tid</param>
public TimerElapsedEvent(TimerId tid)
{
this.Tid = tid;
}