lock statement in LINQPad and async code

i2van

The LINQPad and LINQPad.Controls classes rely on lock statements. How does it coexist with async code?

// LINQPad.DumpContainer

public string Style
{
    get
    {
        lock (_lock)
        {
            return _style;
        }
    }
    set
    {
        lock (_lock)
        {
            if (!(_style == value))
            {
                _style = value;
                this.StyleChanged(this, EventArgs.Empty);
            }
        }
    }
}

JoeAlbahari

I don't understand the question. The property implementation that you provided is synchronous, and the lock protects the field from mutlithreaded access.

i2van

The question is how it would work with async code, because lock has thread affinity.

JoeAlbahari

Are you referring to the restriction whereby you can't await inside a lock? This doesn't apply here because no awaiting is taking place. The same thread that enters the lock also releases the lock.

There's nothing that prevents asynchronous code from calling synchronous code that obtains and releases locks on the same thread.