Исходники и презентации

lessons/sync_primitives/recursive_lock/main.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"sync"
+)
+
+// Need to show solution
+
+type Cache struct {
+	mutex sync.Mutex
+	data  map[string]string
+}
+
+func NewCache() *Cache {
+	return &Cache{
+		data: make(map[string]string),
+	}
+}
+
+func (c *Cache) Set(key, value string) {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+
+	c.data[key] = value
+}
+
+func (c *Cache) Get(key string) string {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+
+	if c.Size() > 0 {
+		return c.data[key]
+	}
+
+	return ""
+}
+
+func (c *Cache) Size() int {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+
+	return len(c.data)
+}