private static Future <IFuture> WaitForX(IEnumerable <IFuture> futures, int x)
{
if (futures == null)
{
throw new ArgumentException("Must specify at least one future to wait on", "futures");
}
var f = new Future <IFuture>();
var h = new WaitHandler();
h.Composite = f;
h.State.AddRange(futures);
h.Trigger = x;
OnComplete oc = h.OnComplete;
OnDispose od = h.OnDispose;
if (h.State.Count == 0)
{
throw new ArgumentException("Must specify at least one future to wait on", "futures");
}
f.RegisterOnDispose(h.OnCompositeDispose);
foreach (IFuture _ in futures)
{
_.RegisterOnComplete(oc);
_.RegisterOnDispose(od);
}
return(f);
}
public void DisposingFutureInvokesOnDisposeHandlers()
{
bool[] invoked = new bool[1];
var f = new Future <object>();
f.RegisterOnDispose((_) => {
invoked[0] = true;
});
f.Dispose();
Assert.IsTrue(invoked[0]);
}
public static void BindFuture <T> (this System.Threading.Tasks.Task <T> task, Future <T> future)
{
if (task.IsCompleted)
{
future.SetResultFrom(task);
return;
}
task.ConfigureAwait(false).GetAwaiter().OnCompleted(() => {
future.SetResultFrom(task);
});
future.RegisterOnDispose(CancelScopeForTask, task);
}
public void CollectingFutureDoesNotInvokeOnDisposeHandlers()
{
bool[] invoked = new bool[1];
var f = new Future <object>();
f.RegisterOnDispose((_) => {
invoked[0] = true;
});
f = null;
GC.Collect();
Assert.IsFalse(invoked[0]);
}
public void FutureWrapsExceptionIfOnDisposeHandlerThrows()
{
var f = new Future <object>();
f.RegisterOnDispose((_) => {
throw new Exception("pancakes");
});
try {
f.Dispose();
Assert.Fail("Exception was swallowed");
} catch (FutureHandlerException fhe) {
Assert.IsInstanceOf <Exception>(fhe.InnerException);
Assert.AreEqual("pancakes", fhe.InnerException.Message);
}
}
