Possibility to benchmark asynchronous methods

I would like to add support for benchmarking asynchronous methods.

Please post your requirements here, I want to know what people need.

What should be supported:

• Task<T> returning methods
• Task returning methods
• ValueTask<T> returning methods (since we target .NET 4.5 we can have it!)
• async void returning methods (edit: we throw NotSupportedException in that case)
• custom task schedulers

[benaadams]

async void should return a bad practice won’t benchmark error 😉

Been doing some poor async benchmarking here https://github.com/dotnet/roslyn/issues/10449#issuecomment-234792163

[AndreyAkinshin]

@adamsitnik, the async branch LGTM. I suggest to merge it into master.

I know that @AndreyAkinshin has also some ideas for concurrent benchmarks for 1.0

Yep, concurrent benchmarks are in the roadmap. But it’s not easy to add this feature because of some CPU “features” like false sharing. Also it requires major changes of MethodInvoker because we have to change the current approach with fixed amount of iterations.