initial import

example/timingwheel/leak/leak.go

@@ -0,0 +1,60 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"runtime"
+	"strconv"
+	"time"
+
+	"zero/core/cmdline"
+	"zero/core/collection"
+	"zero/core/proc"
+)
+
+const numItems = 1000000
+
+var round = flag.Int("r", 3, "rounds to go")
+
+func main() {
+	defer proc.StartProfile().Stop()
+
+	flag.Parse()
+
+	fmt.Println(getMemUsage())
+	for i := 0; i < *round; i++ {
+		do()
+	}
+	cmdline.EnterToContinue()
+}
+
+func do() {
+	tw, err := collection.NewTimingWheel(time.Second, 100, execute)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	for i := 0; i < numItems; i++ {
+		key := strconv.Itoa(i)
+		tw.SetTimer(key, key, time.Second*5)
+	}
+
+	fmt.Println(getMemUsage())
+}
+
+func execute(k, v interface{}) {
+}
+
+func getMemUsage() string {
+	runtime.GC()
+
+	var m runtime.MemStats
+	runtime.ReadMemStats(&m)
+	// For more info, see: https://golang.org/pkg/runtime/#MemStats
+	return fmt.Sprintf("Heap Alloc = %dMiB", toMiB(m.HeapAlloc))
+}
+
+func toMiB(b uint64) uint64 {
+	return b / 1024 / 1024
+}