publish v12.2.0-alpha6

middleware/monitor/expvar_uint64.go

@@ -0,0 +1,33 @@
+package monitor
+
+import (
+	"expvar"
+	"strconv"
+	"sync/atomic"
+)
+
+// Uint64 completes the expvar metric interface, holds an uint64 value.
+type Uint64 struct {
+	value uint64
+}
+
+// Set sets v to value.
+func (v *Uint64) Set(value uint64) {
+	atomic.StoreUint64(&v.value, value)
+}
+
+// Value returns the underline uint64 value.
+func (v *Uint64) Value() uint64 {
+	return atomic.LoadUint64(&v.value)
+}
+
+// String returns the text representation of the underline uint64 value.
+func (v *Uint64) String() string {
+	return strconv.FormatUint(atomic.LoadUint64(&v.value), 10)
+}
+
+func newUint64(name string) *Uint64 {
+	v := new(Uint64)
+	expvar.Publish(name, v)
+	return v
+}