Force WCF to use one thread

Question

I have a console application which uses an external library. The library insists on always being called from the same thread; it locks up otherwise. (I did try runn

Answer 1

Since ExecuteInWorkerThread runs all actions on one thread, it will block if called recursively. So I suspect your hang maybe because you have an action calling the library, which then calls the library again via ExecuteInWorkerThread before completing.

I've not tested your ThreadManager class; my gut says it looks too complicated though, so as an aside, if you don't mind including Reactive Extensions (nuget package rx-main), then you can refactor your ThreadManager class like this:

public class ThreadManager
{
    EventLoopScheduler _scheduler = new EventLoopScheduler();    

    public T ExecuteInWorkerThread(Func action)
    {
        return Observable.Start(action, _scheduler).Wait();
    }
}

And you can add this method to it if you need an async call too:

public Task ExecuteInWorkerThreadAsync(Func action)
{
    return Observable.Start(action, _scheduler).ToTask();
}