PratikDeoghare · February 11, 2022 08:44 · Feb 11, 2022
diff --git a/ports b/ports
@@ -0,0 +1,45 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+	"time"
+)
+
+func main() {
+	newPort := func() func() int {
+		x := 4000
+		var mu sync.Mutex
+		return func() int {
+			mu.Lock()
+			x++
+			y := x
+			mu.Unlock()
+			return y
+		}
+	}()
+	_ = newPort
+
+	localPort := make(chan uint16)
+	go func() {
+		for i := 5000; i < 60000; i++ {
+			localPort <- uint16(i)
+		}
+	}()
+
+	var m sync.Map
+	for i := 0; i < 10000; i++ {
+		go func() {
+			//p := newPort()
+			p := <-localPort
+			_, ok := m.Load(p)
+			if ok {
+				panic(p)
+			} else {
+				m.Store(p, 1)
+			}
+			fmt.Println(p)
+		}()
+	}
+	time.Sleep(time.Second * 10)
+}