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dtrace and ebpf are much more powerful than this as far as I can see.

I have a bpftrace script that measures template compile times across all compiler invocations on my machine, no recompilation required.

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They are most likely more capable but Cosmopolitan which this is built upon has a different use case than just instrumentation

Probably, but all the top comments are saying "this is magic" or "I got to this blog feel stupid of whatever" whereas I just think it's a nice hack, so I thought I'd mention how I'd actually to do it in production.

That should say [stupid" or whatever], I can't type.

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