diff --git a/include/boost/utility/empty_deleter.hpp b/include/boost/utility/empty_deleter.hpp new file mode 100644 index 0000000..ba919cd --- /dev/null +++ b/include/boost/utility/empty_deleter.hpp @@ -0,0 +1,43 @@ +/* + * Copyright Andrey Semashev 2007 - 2013. + * 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 empty_deleter.hpp + * \author Andrey Semashev + * \date 22.04.2007 + * + * This header contains an \c empty_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 shared_ptrs that point to some object that should not be + * deleted (i.e. a variable on the stack or some global singleton, like std::cout). + */ + +#ifndef BOOST_UTILITY_EMPTY_DELETER_HPP_INCLUDED_ +#define BOOST_UTILITY_EMPTY_DELETER_HPP_INCLUDED_ + +#include + +#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 empty_deleter +{ + //! Function object result type + typedef void result_type; + /*! + * Does nothing + */ + void operator() (const volatile void*) const BOOST_NOEXCEPT {} +}; + +} // namespace boost + +#endif // BOOST_UTILITY_EMPTY_DELETER_HPP_INCLUDED_