Shmem: simplify message/socket and refactor to use namespaces

fairmq/shmem/UnmanagedRegion.h

@@ -0,0 +1,56 @@
+/********************************************************************************
+ *    Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    *
+ *                                                                              *
+ *              This software is distributed under the terms of the             *
+ *              GNU Lesser General Public Licence (LGPL) version 3,             *
+ *                  copied verbatim in the file "LICENSE"                       *
+ ********************************************************************************/
+
+#ifndef FAIR_MQ_SHMEM_UNMANAGEDREGION_H_
+#define FAIR_MQ_SHMEM_UNMANAGEDREGION_H_
+
+#include "Manager.h"
+
+#include <FairMQUnmanagedRegion.h>
+#include <FairMQLogger.h>
+
+#include <boost/interprocess/shared_memory_object.hpp>
+#include <boost/interprocess/mapped_region.hpp>
+
+#include <cstddef> // size_t
+#include <string>
+
+namespace fair
+{
+namespace mq
+{
+namespace shmem
+{
+
+class Message;
+class Socket;
+
+class UnmanagedRegion final : public fair::mq::UnmanagedRegion
+{
+    friend class Message;
+    friend class Socket;
+
+  public:
+    UnmanagedRegion(Manager& manager, const size_t size, RegionCallback callback = nullptr, const std::string& path = "", int flags = 0);
+
+    void* GetData() const override { return fRegion->get_address(); }
+    size_t GetSize() const override { return fRegion->get_size(); }
+
+    ~UnmanagedRegion() override { fManager.RemoveRegion(fRegionId); }
+
+  private:
+    Manager& fManager;
+    boost::interprocess::mapped_region* fRegion;
+    uint64_t fRegionId;
+};
+
+}
+}
+}
+
+#endif /* FAIR_MQ_SHMEM_UNMANAGEDREGION_H_ */