init

vendor/github.com/anacrolix/missinggo/perf/event.go

@@ -0,0 +1,38 @@
+package perf
+
+import (
+	"math"
+	"sync"
+	"time"
+)
+
+type Event struct {
+	Mu    sync.RWMutex
+	Count int64
+	Total time.Duration
+	Min   time.Duration
+	Max   time.Duration
+}
+
+func (e *Event) Add(t time.Duration) {
+	e.Mu.Lock()
+	defer e.Mu.Unlock()
+	if t > e.Max {
+		e.Max = t
+	}
+	if t < e.Min {
+		e.Min = t
+	}
+	e.Count++
+	e.Total += t
+}
+
+func (e *Event) MeanTime() time.Duration {
+	e.Mu.RLock()
+	defer e.Mu.RUnlock()
+	return e.Total / time.Duration(e.Count)
+}
+
+func (e *Event) Init() {
+	e.Min = math.MaxInt64
+}