proposal: runtime: Expose goid and gopc in GoroutineProfile

[vaind]

While investigating runtime.GoroutineProfile() for profiling (sampling), I've noticed the resulting StackRecord is missing any way to identify a Goroutine across collected samples. Actual copy of goid and gopc from g could happen in saveg() to StackRecord, but I'm not sure that's the best idea, considering, StackRecord is also used in a couple of other places where it wouldn't make sense to add these fields. Also, it wouldn't be a generic StackRecord then...

[seankhliao]

cc @golang/runtime

[vaind]

Hey, is there something I can do to help get this happen? I'm looking for an alternative to calling runtime.stack(..., true) to get stack traces for all goroutines periodically because that is quite CPU heavy.

[gopherbot]

Change https://go.dev/cl/585396 mentions this issue: runtime: add GoID to StackRecord produced by GoroutineProfile()