| /* |
| * Copyright Andrey Semashev 2007 - 2014. |
| * Distributed under the Boost Software License, Version 1.0. |
| * (See accompanying file LICENSE_1_0.txt or copy at |
| * http://www.boost.org/LICENSE_1_0.txt) |
| */ |
| /*! |
| * \file null_deleter.hpp |
| * \author Andrey Semashev |
| * \date 22.04.2007 |
| * |
| * This header contains a \c null_deleter implementation. This is an empty |
| * function object that receives a pointer and does nothing with it. |
| * Such empty deletion strategy may be convenient, for example, when |
| * constructing <tt>shared_ptr</tt>s that point to some object that should not be |
| * deleted (i.e. a variable on the stack or some global singleton, like <tt>std::cout</tt>). |
| */ |
| |
| #ifndef BOOST_CORE_NULL_DELETER_HPP |
| #define BOOST_CORE_NULL_DELETER_HPP |
| |
| #include <boost/config.hpp> |
| |
| #ifdef BOOST_HAS_PRAGMA_ONCE |
| #pragma once |
| #endif |
| |
| namespace boost { |
| |
| //! A function object that does nothing and can be used as an empty deleter for \c shared_ptr |
| struct null_deleter |
| { |
| //! Function object result type |
| typedef void result_type; |
| /*! |
| * Does nothing |
| */ |
| template< typename T > |
| void operator() (T*) const BOOST_NOEXCEPT {} |
| }; |
| |
| } // namespace boost |
| |
| #endif // BOOST_CORE_NULL_DELETER_HPP |
