/usr/include/deal.II/base/std_cxx11/unique_ptr.h is in libdeal.ii-dev 8.4.2-2+b1.
This file is owned by root:root, with mode 0o644.
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//
// Copyright (C) 2015 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, redistribute
// it, and/or modify it under the terms of the GNU Lesser General
// Public License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// The full text of the license can be found in the file LICENSE at
// the top level of the deal.II distribution.
//
// ---------------------------------------------------------------------
#ifndef dealii__std_cxx11_unique_ptr_h
#define dealii__std_cxx11_unique_ptr_h
#include <deal.II/base/config.h>
#ifdef DEAL_II_WITH_CXX11
# include <memory>
DEAL_II_NAMESPACE_OPEN
namespace std_cxx11
{
using std::unique_ptr;
}
DEAL_II_NAMESPACE_CLOSE
#else
#include <boost/scoped_ptr.hpp>
DEAL_II_NAMESPACE_OPEN
namespace std_cxx11
{
/**
* Implementation of a basic replacement for C++11's std::unique_ptr class.
*
* BOOST does not have a replacement for std::unique_ptr (because unique_ptr
* requires move semantics that aren't available unless you have a C++11
* compiler -- in which case you also have std::unique_ptr; see for example
* http://stackoverflow.com/questions/2953530/unique-ptr-boost-equivalent)
*
* Consequently, we emulate the class by just wrapping a boost::scoped_ptr
* in the cheapest possible way -- by just deriving from it and repeating
* the basic constructors. Everything else is inherited from the scoped_ptr
* class.
*
* There is no overhead to this approach: scoped_ptr cannot be copied or
* moved. Instances of unique_ptr cannot be copied, and if you do not have a
* C++11 compiler, then you cannot move anything anyway.
*/
template <typename T>
class unique_ptr : public boost::scoped_ptr<T>
{
public:
unique_ptr () {}
template<class Y>
explicit unique_ptr (Y *p)
:
boost::scoped_ptr<T>(p)
{}
};
}
DEAL_II_NAMESPACE_CLOSE
#endif
// then allow using the old namespace name instead of the new one
DEAL_II_NAMESPACE_OPEN
namespace std_cxx1x = std_cxx11;
DEAL_II_NAMESPACE_CLOSE
#endif
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