public override void Simplify()
{
var awaitNode = Dependents.OfType <AsyncStateMachineNode>().FirstOrDefault();
if (awaitNode != null && awaitNode.AwaitedTaskNode?.Status == System.Threading.Tasks.TaskStatus.WaitingForActivation)
{
// This is a very specific case, but it simplifies the final graph a lot.
// In async method invocation chain, every async method has a dependency to SyncContextAwaitTaskContinuation
// because every step of async method (if not decorated with ConfigureAwait(false)) is called
// on a captured sync context.
// When every async method in the chain is in awaiting state, and the awaited task is indeed in an awaited state
// then we can remove this node from the graph to make it clearer.
//
// (Yes, it is possible that the state machine is in awaited state but the awaited task is completed.
// This is the main case when the deadlock caused by the sync over async is happening).
var syncContextAwaitTaskContinuation = awaitNode.Dependencies.OfType <AwaitTaskContinuationNode>().FirstOrDefault();
if (syncContextAwaitTaskContinuation != null)
{
//RemoveThisNode();
}
}
}
