Concurrent I/O on a single thread

[gaborcsardi]

I wonder if anyone has advice on implementing tracing for an application that is single threaded and uses I/O driven concurrency to serve multiple requests. It seems to make sense to have a separate span for each concurrent request.

I understand that the current context storage implementation with thread-local storage works just fine when people use threads to implement concurrency. But I am not sure what would be the best way to handle multiple context stacks within the same thread.

Maybe I could implement a different context storage (i.e. RuntimeContextStorage) that has methods to duplicate the current context stack, switch to another context stack, etc.? Then I would manage these context stacks manually. Do you think that this is possible? Or is there a better way to go about this?

[lalitb]

Maybe I could implement a different context storage (i.e. RuntimeContextStorage) that has methods to duplicate the current context stack, switch to another context stack, etc.? Then I would manage these context stacks manually. Do you think that this is possible? Or is there a better way to go about this?

I believe this is the correct approach, though not sure if someone has ever tried this.

[gaborcsardi]

Maybe I could implement a different context storage (i.e. RuntimeContextStorage) that has methods to duplicate the current context stack, switch to another context stack, etc.? Then I would manage these context stacks manually. Do you think that this is possible? Or is there a better way to go about this?

I believe this is the correct approach, though not sure if someone has ever tried this.

Thanks for the reply. I just implemented this. I can add it as an example if you are interested and are able to review a a PR.