SharedMemObject.hpp

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#ifndef _uhal_ipc_SharedMemObject_hpp_
#define _uhal_ipc_SharedMemObject_hpp_
 
#include <boost/interprocess/managed_shared_memory.hpp>
#include <string>
 
namespace uhallibs {
namespace ipc {
 
template<class T>
class SharedMemObject
{
public:
  SharedMemObject(const SharedMemObject<T>&) = delete;
  SharedMemObject<T>& operator=(const SharedMemObject<T>&) = delete;
 
  SharedMemObject(const std::string& aName);
  ~SharedMemObject();
 
  T* operator->();
 
  T& operator*();
 
private:
  std::string mName;
  boost::interprocess::managed_shared_memory mSharedMem;
  T* mObj;
};
 
// Definition
template<class T>
SharedMemObject<T>::SharedMemObject(const std::string& aName)
  : mName(aName)
  , mSharedMem(boost::interprocess::open_or_create, aName.c_str(), 1024, 0x0, boost::interprocess::permissions(0666))
  , mObj(mSharedMem.find_or_construct<T>(boost::interprocess::unique_instance)())
{
}
 
template<class T>
SharedMemObject<T>::~SharedMemObject()
{
  // boost::interprocess::shared_memory_object::remove(mName.c_str());
}
 
template<class T>
T*
SharedMemObject<T>::operator->()
{
  return mObj;
}
 
template<class T>
T&
SharedMemObject<T>::operator*()
{
  return *mObj;
}
} // namespace ipc
} // namespace uhal
 
#endif /* _uhal_ipc_SharedMemObject_hpp_ */