Исходники и презентации

lessons/sync_primitives/local_mutex/main.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+)
+
+// Need to show solution
+
+var value int
+
+func inc() {
+	mutex := sync.Mutex{}
+
+	mutex.Lock()
+	value++
+	mutex.Unlock()
+}
+
+func main() {
+	wg := sync.WaitGroup{}
+	wg.Add(1000)
+
+	for i := 0; i < 1000; i++ {
+		go func() {
+			defer wg.Done()
+			inc()
+		}()
+	}
+
+	wg.Wait()
+
+	fmt.Println(value)
+}