Исходники и презентации

lessons/sync_primitives/deadlock/main.go

@@ -0,0 +1,42 @@
+package main
+
+import "sync"
+
+// Need to show solution
+
+var resource1 int
+var resource2 int
+
+func normalizeResources(lhs, rhs *sync.Mutex) {
+	lhs.Lock()
+	rhs.Lock()
+
+	// normalization
+
+	rhs.Unlock()
+	lhs.Unlock()
+}
+
+func main() {
+	var mutex1 sync.Mutex
+	var mutex2 sync.Mutex
+
+	wg := sync.WaitGroup{}
+	wg.Add(1000)
+
+	for i := 0; i < 500; i++ {
+		go func() {
+			defer wg.Done()
+			normalizeResources(&mutex1, &mutex2)
+		}()
+	}
+
+	for i := 0; i < 500; i++ {
+		go func() {
+			defer wg.Done()
+			normalizeResources(&mutex2, &mutex1)
+		}()
+	}
+
+	wg.Wait()
+}