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4adf418be9
Add a new API rb_profile_thread_frames(), which is essentialy a per-thread version of rb_profile_frames(). While the original rb_profile_frames() always returns results about the current active thread obtained by GET_EC(), this new API takes a Thread to be profiled as an argument. This should come in handy when profiling I/O-bound programs such as webapps, since this new API allows us to learn about Threads performing I/O (which do not have the GVL). Profiling worker threads (such as Sidekiq workers) may be another application. Implements [Feature #10602] Co-authored-by: Mike Perham <mike@perham.net>