[tor-bugs] #13802 [Core Tor/Tor]: Add instrumentation to tor

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#13802: Add instrumentation to tor
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 Reporter:  dgoulet       |          Owner:  dgoulet
     Type:  enhancement   |         Status:  assigned
 Priority:  Medium        |      Milestone:  Tor: 0.2.???
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:  #13792        |         Points:  3
 Reviewer:                |        Sponsor:  SponsorR-can
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Comment (by pastly):

 I've done some work with dgoulet's branch and have pushed it publicly
 here.

 https://github.com/pastly/public-tor/tree/ticket13802_028_01

 It is branched off of a slightly outdated release-0.2.8.

 Differences from dgoulet's work

 - remove all/most of the included shadow traces
 - add shadow trace on inbuf
 - add shadow trace when cell is written to outbuf
 - add shadow trace when outbuf is flushed some

 The shadow traces have been extensively tested as I'm using them.
 dgoulet's generalized code works wonderfully, and I don't think I really
 changed any of it.

 IMO the code can be merged (after review) as my testing shows it's
 working. It's possible, though unlikely, that I'll need to change the
 shadow-specific traces.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13802#comment:30>
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