/// <summary>
/// Marks this operation as completed and returns the callback
/// </summary>
public Action <Exception, Response> SetCompleted()
{
var previousState = Interlocked.CompareExchange(ref _state, StateCompleted, StateInit);
if (previousState == StateCancelled)
{
return(Noop);
}
Action <Exception, Response> callback;
if (previousState == StateInit)
{
callback = Interlocked.Exchange(ref _callback, Noop);
if (Timeout != null)
{
//Cancel it if it hasn't expired
Timeout.Cancel();
}
return(callback);
}
//Operation has timed out
while (!_timeoutCallbackSet)
{
//Wait for the timeout callback to be set
Thread.SpinWait(10);
}
callback = Interlocked.Exchange(ref _callback, Noop);
return(callback);
}
public static void Resume(Activity act)
{
if (App.Kp2a.GetDb().Loaded)
{
Timeout.Cancel(act);
}
}
public static void Resume(Activity act)
{
if (App.Kp2a.CurrentDb != null)
{
Timeout.Cancel(act);
}
}
public override void EntityRemoved(Player e)
{
base.EntityRemoved(e);
if (e.Lives == 0)
{
if (Timeout != null)
{
Timeout.Cancel();
}
Timeout = World.Tweener.Timer(0.2f)
.OnComplete(CheckWinner);
ActivePlayers.Remove(e);
}
if (ActivePlayers.Count > 0)
{
var remaining = ActivePlayers.Count(p => p.IsAlive);
if (remaining <= 1)
{
World.Tweener.Timer(1).OnComplete(CheckAdvance);
}
}
}
/// <summary>
/// Removes the context associated with this request, if possible
/// </summary>
public void Cancel()
{
if (Interlocked.CompareExchange(ref _state, StateCancelled, StateInit) != StateInit)
{
return;
}
//Remove the closure
Interlocked.Exchange(ref _callback, Noop);
if (Timeout != null)
{
//Cancel it if it hasn't expired
//We should not worry about yielding OperationTimedOutExceptions when this is cancelled.
Timeout.Cancel();
}
}
public Task <Position> GetPositionAsync(int timeout, CancellationToken token, bool includeHeading)
{
if (timeout < 0)
{
throw new ArgumentOutOfRangeException("timeout");
}
IAsyncOperation <Geoposition> pos = GetGeolocator().GetGeopositionAsync(TimeSpan.FromTicks(0), TimeSpan.FromDays(365));
token.Register(o => ((IAsyncOperation <Geoposition>)o).Cancel(), pos);
Timeout timer = new Timeout(timeout, pos.Cancel);
var tcs = new TaskCompletionSource <Position>();
pos.Completed = (op, s) =>
{
timer.Cancel();
switch (s)
{
case AsyncStatus.Canceled:
tcs.SetCanceled();
break;
case AsyncStatus.Completed:
tcs.SetResult(GetPosition(op.GetResults()));
break;
case AsyncStatus.Error:
Exception ex = op.ErrorCode;
if (ex is UnauthorizedAccessException)
{
ex = new GeolocationException(GeolocationError.Unauthorized, ex);
}
tcs.SetException(ex);
break;
}
};
return(tcs.Task);
}
public Task <Position> GetPositionAsync(int timeout, bool includeHeading)
{
if (timeout < 0)
{
throw new ArgumentOutOfRangeException("timeout");
}
// The built in timeout does not cancel, it throws an exception, so we'll setup our own.
IAsyncOperation <Geoposition> pos = GetGeolocator().GetGeopositionAsync(TimeSpan.Zero, TimeSpan.FromDays(365));
Timeout timer = new Timeout(timeout, pos.Cancel);
var tcs = new TaskCompletionSource <Position>();
pos.Completed = (op, s) =>
{
timer.Cancel();
switch (s)
{
case AsyncStatus.Canceled:
tcs.SetCanceled();
break;
case AsyncStatus.Completed:
tcs.SetResult(GetPosition(op.GetResults()));
break;
case AsyncStatus.Error:
Exception ex = op.ErrorCode;
if (ex is UnauthorizedAccessException)
{
ex = new GeolocationException(GeolocationError.Unauthorized, ex);
}
tcs.SetException(ex);
break;
}
};
return(tcs.Task);
}
public void Complete(EventPredicate <TEvent, TData> predicate = null)
{
_eventActivitySet.UseForCompletion(predicate);
Then((whenEvent, state) => Timeout.Cancel(state.InstanceId.ToString()), predicate);
}
