mirror of https://github.com/CGAL/cgal
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
// Copyright (c) 2001 Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
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// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
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// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; version 2.1 of the License.
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// See the file LICENSE.LGPL distributed with CGAL.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $Source$
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// $Revision$ $Date$
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// $Name$
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//
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// Author(s) : Sylvain Pion
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#ifndef CGAL_NEW_DELETE_ALLOCATOR_H
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#define CGAL_NEW_DELETE_ALLOCATOR_H
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#include <cstddef>
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CGAL_BEGIN_NAMESPACE
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template <class T>
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class New_delete_allocator
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{
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public:
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typedef std::size_t size_type;
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typedef std::ptrdiff_t difference_type;
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typedef T value_type;
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typedef T* pointer;
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typedef const T* const_pointer;
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typedef T& reference;
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typedef const T& const_reference;
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template <class U> struct rebind { typedef New_delete_allocator<U> other; };
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New_delete_allocator() {}
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// Uses the default constructor of T.
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pointer
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allocate(size_type n, const_pointer = 0) const
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{ return new T[n]; }
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// p should have an appropriate type
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// That's why we need the parameterization
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// T should have a virtual destructor
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void
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deallocate(pointer p, size_type) const
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{ delete[] p; }
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pointer
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address(reference) const
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{ return static_cast<pointer>(0); }
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const_pointer
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address(const_reference) const
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{ return static_cast<const_pointer>(0); }
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void
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construct(pointer ptr, const_reference ref) const
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{ *ptr = ref; }
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// We can't do anything here.
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void
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destroy(pointer) const
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{ }
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size_type
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max_size() const
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{ return 0; }
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};
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CGAL_END_NAMESPACE
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#endif // CGAL_NEW_DELETE_ALLOCATOR_H
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