New cpp folder structure

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

libs/base/scope_guard.hpp

@@ -0,0 +1,62 @@
+/// @author	Yury Melnichek mailto:melnichek@gmail.com
+/// @date	07.01.2005
+/// @brief	See http://gzip.rsdn.ru/forum/Message.aspx?mid=389127&only=1.
+
+#pragma once
+
+namespace base
+{
+namespace impl
+{
+  /// Base class for all ScopeGuards.
+  class GuardBase
+  {
+  public:
+    /// Disable ScopeGuard functionality on it's destruction
+    void release() const
+    {
+      m_bDoRollback = false;
+    }
+
+  protected:
+
+    GuardBase() : m_bDoRollback(true)
+    {
+    }
+
+    // Do something in the destructor
+    mutable bool m_bDoRollback;
+  };
+
+  /// ScopeGuard for specific functor
+  template <typename TFunctor> class GuardImpl : public GuardBase
+  {
+  public:
+    explicit GuardImpl(TFunctor const & F) : m_Functor(F)
+    {
+    }
+
+    ~GuardImpl()
+    {
+      if (m_bDoRollback)
+        m_Functor();
+    }
+
+  private:
+    TFunctor m_Functor;
+  };
+} // namespace impl
+
+typedef impl::GuardBase const & scope_guard;
+
+/// Create scope_guard
+template <typename TFunctor>
+impl::GuardImpl<TFunctor> make_scope_guard(TFunctor const & F)
+{
+  return impl::GuardImpl<TFunctor>(F);
+}
+} // namespace base
+
+#define SCOPE_GUARD(name, func)                            \
+  ::base::scope_guard name = base::make_scope_guard(func); \
+  static_cast<void>(name)