fix: rueidislock deadlock caused by the absence of peers#458
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Codecov ReportAll modified and coverable lines are covered by tests ✅
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## main #458 +/- ##
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Coverage 95.98% 95.99%
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Files 67 67
Lines 31543 31528 -15
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- Hits 30276 30264 -12
+ Misses 1085 1083 -2
+ Partials 182 181 -1 ☔ View full report in Codecov by Sentry. |
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rueian
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Jan 27, 2024
| m.mu.RLock() | ||
| for _, g := range m.gates { | ||
| select { | ||
| case g.ch <- struct{}{}: |
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This may cause the below g.ch <- struct{}{} below stuck.
| for i := int32(0); i < m.totalcnt; i++ { | ||
| cases = append(cases, reflect.SelectCase{Dir: reflect.SelectRecv, Chan: reflect.ValueOf(g.csc[i])}) | ||
| } | ||
| reflect.Select(cases) |
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This is no longer needed because we already clear each of theg.csc channel before entering the monitoring function.
| g.ch <- struct{}{} | ||
| } else if m.gates != nil { | ||
| select { | ||
| case g.ch <- struct{}{}: |
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Notify one peer if any without blocking.
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fixes #457
There is a rare chance that when receiving
bulking invalidationand all peers are aborted, the following linerueidis/rueidislock/lock.go
Line 324 in 33e9233
This PR removes the unnecessary notification to the
g.chfrom thebulking invalidationand makes the mutex never be blocked.