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Don't manually poll the ioservice after stopping capabilities #5533
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Manually polling the ioservice on shutdown is redundant. The motivation behind doing this was to ensure that the posted capability timer cancellations (see Host::stopCapabilities) were processed during host shutdown. However, it turns out that there's no need to do this because the capability timers only need to be cancelled if more capability work loops are being scheduled, but more capability work loops are only scheduled during shutdown if we are disconnecting pending handshakes and/or peers, each of which result in the io service being polled anyway.
halfalicious
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chfast
Codecov Report
@@ Coverage Diff @@
## master #5533 +/- ##
==========================================
- Coverage 61.87% 61.87% -0.01%
==========================================
Files 344 344
Lines 28756 28752 -4
Branches 3267 3264 -3
==========================================
- Hits 17792 17789 -3
- Misses 9796 9797 +1
+ Partials 1168 1166 -2 |
gumb0
reviewed
Mar 27, 2019
gumb0
approved these changes
Mar 27, 2019
chfast
suggested changes
Mar 27, 2019
Reference removal of ioservice polling and a message for the changes which fixed the capability timer race condition (#5523)
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chfast
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Mar 27, 2019
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Manually polling the ioservice on shutdown is redundant. The motivation behind doing this was to ensure that the posted capability timer cancellations (see Host::stopCapabilities) were processed during host shutdown (see #5523 for details). However, it turns out that there's no need to do this because the capability timers only need to be cancelled if more capability work loops are being scheduled, but more capability work loops are only scheduled during shutdown if we are disconnecting pending handshakes and/or peers, each of which result in the io service being polled anyway.