On Tuesday, August 29, 2017 at 10:42:31 AM UTC-7, Tony Garnock-Jones wrote:
> It'd also be great for Racket in general to have better visibility into
> running programs to see what's going wrong with them in situations like
I think it's possible to do this with existing features and libraries. You
could use a thread group to make two sets of threads: one for normal user
requests, and one for debugging and introspection requests from administrators.
Then, if somehow the request threads got locked up on some CPU-bound infinite
loop you could still handle debugging requests. A good debugging endpoint might
be one that uses a statistical profiler to get a sense of what the user
request threads are doing. A package that provided some convenience wrappers
around thread groups, the statistical profiler, and the web server library to
automatically make such a debugging endpoint would be a good project for any
web-oriented Racketeers out there.
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