// Load made a task
private static Task <IAsyncLoaded> Load(this IAsyncLoaded loadable)
{
if (loadable.IsLoaded && loadable.IsReady)
{
return(Task.FromResult(loadable));
}
else
{
TaskCompletionSource <IAsyncLoaded> tcs = new TaskCompletionSource <IAsyncLoaded>();
lock (waiting)
{
waiting.Add(new Tuple <IAsyncLoaded, TaskCompletionSource <IAsyncLoaded> >(loadable, tcs));
if (!_timer.Enabled)
{
_timer.Start();
}
}
return(tcs.Task);
}
}
public static Task <IAsyncLoaded> Load(this IAsyncLoaded loadable)
{
Action start = () =>
{
running = true;
ThreadPool.QueueUserWorkItem(delegate
{
while (true)
{
Tuple <IAsyncLoaded, TaskCompletionSource <IAsyncLoaded> >[] l;
Thread.Sleep(100);
lock (waiting)
l = waiting.ToArray();
HashSet <Tuple <IAsyncLoaded, TaskCompletionSource <IAsyncLoaded> > > r = new HashSet <Tuple <IAsyncLoaded, TaskCompletionSource <IAsyncLoaded> > >();
foreach (var i in l)
{
if (i.Item1.IsLoaded)
{
i.Item2.SetResult(i.Item1);
r.Add(i);
}
}
lock (waiting)
{
waiting.RemoveAll(e => r.Contains(e));
if (waiting.Count == 0)
{
running = false;
break;
}
}
}
});
};
TaskCompletionSource <IAsyncLoaded> tcs = new TaskCompletionSource <IAsyncLoaded>();
if (loadable.IsLoaded)
{
tcs.SetResult(loadable);
}
else if (running)
{
lock (waiting)
if (running)
{
waiting.Add(new Tuple <IAsyncLoaded, TaskCompletionSource <IAsyncLoaded> >(loadable, tcs));
}
else
{
waiting.Add(new Tuple <IAsyncLoaded, TaskCompletionSource <IAsyncLoaded> >(loadable, tcs));
start();
}
}
else
{
lock (waiting)
{
waiting.Add(new Tuple <IAsyncLoaded, TaskCompletionSource <IAsyncLoaded> >(loadable, tcs));
start();
}
}
return(tcs.Task);
}
