Исходники и презентации

lessons/sync_primitives/compare_and_swap/main.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+	"sync/atomic"
+)
+
+// Need to show solution
+
+var data map[string]string
+var initialized atomic.Bool
+
+func initialize() {
+	if !initialized.Load() {
+		initialized.Store(true)
+		data = make(map[string]string)
+		fmt.Println("initialized")
+	}
+}
+
+func main() {
+	wg := sync.WaitGroup{}
+	wg.Add(1000)
+
+	for i := 0; i < 1000; i++ {
+		go func() {
+			defer wg.Done()
+			initialize()
+		}()
+	}
+
+	wg.Wait()
+}