tor/changes/ticket25952
Nick Mathewson b396e4e429 Move unreachable port warnings to a periodic event.
Arguably, the conditions under which these events happen should be a
bit different, but the rules are complex enough here that I've tried
to have this commit be pure refactoring.

Closes ticket 25952.

Finally, before this code goes away, take a moment to look at the
amazing way that we used to try to have an event happen
every N seconds:

      get_uptime() / N != (get_uptime()+seconds_elapsed) / N

Truly, it is a thing of wonder.  I'm glad we didn't start using this
pattern everywhere else.
2018-05-01 13:14:18 -04:00

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o Minor features (mainloop):
- Move responsibility for
warning relay operators about unreachable ports
from a once-per-second callback to a callback that is only scheduled as
needed. Once enough items are removed from our once-per-second
callback, we can eliminate it entirely to conserve CPU when idle.
Closes ticket
25952.