feat: Waku v2 bridge

Issue #12610

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

@@ -0,0 +1,104 @@
+package perf
+
+import (
+	"log"
+	"runtime"
+	"time"
+)
+
+type Timer struct {
+	started time.Time
+	log     bool
+	name    string
+	marked  bool
+}
+
+func NewTimer(opts ...timerOpt) (t *Timer) {
+	t = &Timer{
+		started: time.Now(),
+	}
+	for _, o := range opts {
+		o(t)
+	}
+	if t.log && t.name != "" {
+		log.Printf("starting timer %q", t.name)
+	}
+	runtime.SetFinalizer(t, func(t *Timer) {
+		if t.marked {
+			return
+		}
+		log.Printf("timer %#v was never marked", t)
+	})
+	return
+}
+
+type timerOpt func(*Timer)
+
+func Log(t *Timer) {
+	t.log = true
+}
+
+func Name(name string) func(*Timer) {
+	return func(t *Timer) {
+		t.name = name
+	}
+}
+
+func (t *Timer) Mark(events ...string) time.Duration {
+	d := time.Since(t.started)
+	if len(events) == 0 {
+		if t.name == "" {
+			panic("no name or events specified")
+		}
+		t.addDuration(t.name, d)
+	} else {
+		for _, e := range events {
+			if t.name != "" {
+				e = t.name + "/" + e
+			}
+			t.addDuration(e, d)
+		}
+	}
+	return d
+}
+
+func (t *Timer) MarkOk(ok bool) {
+	if ok {
+		t.Mark("ok")
+	} else {
+		t.Mark("not ok")
+	}
+}
+
+func (t *Timer) MarkErr(err error) {
+	if err == nil {
+		t.Mark("success")
+	} else {
+		t.Mark("error")
+	}
+}
+
+func (t *Timer) addDuration(desc string, d time.Duration) {
+	t.marked = true
+	mu.RLock()
+	e := events[desc]
+	mu.RUnlock()
+	if e == nil {
+		mu.Lock()
+		e = events[desc]
+		if e == nil {
+			e = new(Event)
+			e.Init()
+			events[desc] = e
+		}
+		mu.Unlock()
+	}
+	e.Add(d)
+	if t.log {
+		if t.name != "" {
+			log.Printf("timer %q got event %q after %s", t.name, desc, d)
+		} else {
+			log.Printf("marking event %q after %s", desc, d)
+		}
+	}
+}