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[20.10 backport] daemon: use RWMutex for stateCounter #43426

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merged 1 commit into from Mar 25, 2022
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[20.10 backport] daemon: use RWMutex for stateCounter #43426

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6 changes: 3 additions & 3 deletions daemon/metrics.go
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Expand Up @@ -65,7 +65,7 @@ func init() {
}

type stateCounter struct {
mu sync.Mutex
mu sync.RWMutex
states map[string]string
desc *prometheus.Desc
}
Expand All @@ -78,8 +78,8 @@ func newStateCounter(desc *prometheus.Desc) *stateCounter {
}

func (ctr *stateCounter) get() (running int, paused int, stopped int) {
ctr.mu.Lock()
defer ctr.mu.Unlock()
ctr.mu.RLock()
defer ctr.mu.RUnlock()

states := map[string]int{
"running": 0,
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