New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/base/atomic_shared_ptr.hpp

@@ -0,0 +1,27 @@
+#pragma once
+
+#include "base/macros.hpp"
+
+#include <memory>
+
+namespace base
+{
+// Template which provides methods for concurrently using shared pointers.
+template <typename T>
+class AtomicSharedPtr final
+{
+public:
+  using ContentType = T const;
+  using ValueType = std::shared_ptr<ContentType>;
+
+  AtomicSharedPtr() = default;
+
+  void Set(ValueType value) noexcept { atomic_store(&m_wrapped, value); }
+  ValueType Get() const noexcept { return atomic_load(&m_wrapped); }
+
+private:
+  ValueType m_wrapped = std::make_shared<ContentType>();
+
+  DISALLOW_COPY_AND_MOVE(AtomicSharedPtr);
+};
+}  // namespace base