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Merge pull request #2021 from prometheus/beorn7/storage

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Avoid `defer` in seriesMap.get
This commit is contained in:
Fabian Reinartz 2016-09-22 18:12:21 +02:00 committed by GitHub
commit 71b332278d
1 changed files with 4 additions and 2 deletions
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6
storage/local/series.go
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@ -66,9 +66,11 @@ func (sm *seriesMap) length() int {
// semantics as the native Go map.
func (sm *seriesMap) get(fp model.Fingerprint) (s *memorySeries, ok bool) {
sm.mtx.RLock()
defer sm.mtx.RUnlock()
s, ok = sm.m[fp]
// Note that the RUnlock is not done via defer for performance reasons.
// TODO(beorn7): Once https://github.com/golang/go/issues/14939 is
// fixed, revert to the usual defer idiom.
sm.mtx.RUnlock()
return
}