/// <summary>
/// Initializes a new instance of the <see cref="TimerInfo"/> class.
/// </summary>
/// <param name="ownerId">The id of the actor that owns this timer.</param>
/// <param name="dueTime">The amount of time to wait before sending the first timeout event.</param>
/// <param name="period">The time interval between timeout events.</param>
/// <param name="customEvent">Optional custom event to raise instead of a default TimerElapsedEvent.</param>
internal TimerInfo(ActorId ownerId, TimeSpan dueTime, TimeSpan period, TimerElapsedEvent customEvent)
{
this.Id = Guid.NewGuid();
this.OwnerId = ownerId;
this.DueTime = dueTime;
this.Period = period;
this.CustomEvent = customEvent;
}
/// <summary>
/// Initializes a new instance of the <see cref="ActorTimer"/> class.
/// </summary>
/// <param name="info">Stores information about this timer.</param>
/// <param name="owner">The actor that owns this timer.</param>
public ActorTimer(TimerInfo info, Actor owner)
{
this.Info = info;
this.Owner = owner;
this.TimeoutEvent = this.Info.CustomEvent;
if (this.TimeoutEvent is null)
{
this.TimeoutEvent = new TimerElapsedEvent(this.Info);
}
else
{
this.TimeoutEvent.Info = this.Info;
}
// To avoid a race condition between assigning the field of the timer
// and HandleTimeout accessing the field before the assignment happens,
// we first create a timer that cannot get triggered, then assign it to
// the field, and finally we start the timer.
this.InternalTimer = new Timer(this.HandleTimeout, null, Timeout.InfiniteTimeSpan, Timeout.InfiniteTimeSpan);
this.InternalTimer.Change(this.Info.DueTime, Timeout.InfiniteTimeSpan);
}