1 files changed, 48 insertions, 0 deletions
diff --git a/libtransport/includes/hicn/transport/utils/singleton.h b/libtransport/includes/hicn/transport/utils/singleton.h
new file mode 100644
index 000000000..cdd8b03bf
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+++ b/libtransport/includes/hicn/transport/utils/singleton.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2021 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <hicn/transport/utils/noncopyable.h>
+
+namespace utils {
+
+template <typename T>
+class Singleton : NonCopyable {
+ public:
+  static T& getInstance() {
+    static T instance;
+    return instance;
+  }
+
+ protected:
+  Singleton() {}
+  ~Singleton() {}
+};
+
+template <typename T>
+class ThreadLocalSingleton : NonCopyable {
+ public:
+  static T& getInstance() {
+    static thread_local T instance;
+    return instance;
+  }
+
+ protected:
+  ThreadLocalSingleton() {}
+  ~ThreadLocalSingleton() {}
+};
+
+}  // namespace utils
+\ No newline at end of file