add experiment

.gitignore

@@ -1,3 +1,4 @@
 .idea
 data
 plot.html
+.DS_Store

generate/main.go

@@ -15,9 +15,13 @@ func main() {
 
 	// Setup the value we want to retrieve in each iteration
 	ctx := context.WithValue(context.Background(), key, "some-val")
-
 	fat(ctx, times)
-	shadow(ctx, times)
+
+	ctx = context.WithValue(context.Background(), key, "some-val")
+	thin(ctx, times)
+
+	ctx = context.WithValue(context.Background(), key, "some-val")
+	experiment(ctx, times)
 }
 
 func fat(ctx context.Context, times uint64) {
@@ -33,18 +37,41 @@ func fat(ctx context.Context, times uint64) {
 	}
 }
 
-func shadow(ctx context.Context, times uint64) {
+func thin(ctx context.Context, times uint64) {
 	for range times {
 		// shadow the context, each iteration creates a new one and it doesn't grow
 		ctx := contextWithRandom(ctx)
 
 		start := time.Now()
 		_ = ctx.Value(key)
 
-		fmt.Printf("shadow,%v\n", time.Since(start).Nanoseconds())
+		fmt.Printf("thin,%v\n", time.Since(start).Nanoseconds())
+	}
+}
+
+func experiment(ctx context.Context, times uint64) {
+	wrapper := something()
+	r := &R{ctx}
+	for range times {
+		wrapper(r)
+		start := time.Now()
+		_ = r.Ctx.Value(key)
+		fmt.Printf("experiment,%v\n", time.Since(start).Nanoseconds())
 	}
 }
 
 func contextWithRandom(ctx context.Context) context.Context {
 	return context.WithValue(ctx, "other_key", uuid.Must(uuid.NewV4()))
 }
+
+type R struct {
+	Ctx context.Context
+}
+
+func something() func(*R) {
+	return func(r *R) {
+		ctx := r.Ctx
+		ctx = contextWithRandom(ctx)
+		r.Ctx = ctx // triggered on this line
+	}
+}

plot/main.go

@@ -11,9 +11,9 @@ import (
 )
 
 func main() {
-	shadow, fat := getData()
+	thin, fat, experiment := getData()
 	plot := charts.NewLine()
-	xAxis := make([]int, len(shadow))
+	xAxis := make([]int, len(thin))
 	for i := range xAxis {
 		xAxis[i] = i
 	}
@@ -25,8 +25,9 @@ func main() {
 
 	plot.
 		SetXAxis(xAxis).
-		AddSeries("Shadow", shadow).
-		AddSeries("Fat", fat)
+		AddSeries("Thin", thin).
+		AddSeries("Fat", fat).
+		AddSeries("Experiment", experiment)
 
 	f, err := os.Create("plot.html")
 	if err != nil {
@@ -38,9 +39,10 @@ func main() {
 	}
 }
 
-func getData() ([]opts.LineData, []opts.LineData) {
-	var shadow []opts.LineData
+func getData() ([]opts.LineData, []opts.LineData, []opts.LineData) {
+	var thin []opts.LineData
 	var fat []opts.LineData
+	var experiment []opts.LineData
 
 	f, err := os.Open("data")
 	if err != nil {
@@ -66,12 +68,14 @@ func getData() ([]opts.LineData, []opts.LineData) {
 		point := opts.LineData{Value: val, Name: "ns"}
 
 		switch series {
-		case "shadow":
-			shadow = append(shadow, point)
+		case "thin":
+			thin = append(thin, point)
 		case "fat":
 			fat = append(fat, point)
+		case "experiment":
+			experiment = append(experiment, point)
 		}
 	}
 
-	return shadow, fat
+	return thin, fat, experiment
 }