From 8286ac511144e4f17d34eac9affb97e50646344a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Wed, 23 Jul 2014 15:25:44 +0200 Subject: Imported Upstream version 4.0.0 --- .../boost/smart_ptr/detail/shared_ptr_nmt.hpp | 182 +++++++++++++++++++++ 1 file changed, 182 insertions(+) create mode 100644 libcutl/cutl/details/boost/smart_ptr/detail/shared_ptr_nmt.hpp (limited to 'libcutl/cutl/details/boost/smart_ptr/detail/shared_ptr_nmt.hpp') diff --git a/libcutl/cutl/details/boost/smart_ptr/detail/shared_ptr_nmt.hpp b/libcutl/cutl/details/boost/smart_ptr/detail/shared_ptr_nmt.hpp new file mode 100644 index 0000000..e84e696 --- /dev/null +++ b/libcutl/cutl/details/boost/smart_ptr/detail/shared_ptr_nmt.hpp @@ -0,0 +1,182 @@ +#ifndef BOOST_SMART_PTR_DETAIL_SHARED_PTR_NMT_HPP_INCLUDED +#define BOOST_SMART_PTR_DETAIL_SHARED_PTR_NMT_HPP_INCLUDED + +// +// detail/shared_ptr_nmt.hpp - shared_ptr.hpp without member templates +// +// (C) Copyright Greg Colvin and Beman Dawes 1998, 1999. +// Copyright (c) 2001, 2002 Peter Dimov +// +// 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) +// +// See http://www.boost.org/libs/smart_ptr/shared_ptr.htm for documentation. +// + +#include +#include +#include +#include + +#ifndef BOOST_NO_AUTO_PTR +# include // for std::auto_ptr +#endif + +#include // for std::swap +#include // for std::less +#include // for std::bad_alloc + +namespace cutl_details_boost +{ + +template class shared_ptr +{ +private: + + typedef detail::atomic_count count_type; + +public: + + typedef T element_type; + typedef T value_type; + + explicit shared_ptr(T * p = 0): px(p) + { +#ifndef BOOST_NO_EXCEPTIONS + + try // prevent leak if new throws + { + pn = new count_type(1); + } + catch(...) + { + cutl_details_boost::checked_delete(p); + throw; + } + +#else + + pn = new count_type(1); + + if(pn == 0) + { + cutl_details_boost::checked_delete(p); + cutl_details_boost::throw_exception(std::bad_alloc()); + } + +#endif + } + + ~shared_ptr() + { + if(--*pn == 0) + { + cutl_details_boost::checked_delete(px); + delete pn; + } + } + + shared_ptr(shared_ptr const & r): px(r.px) // never throws + { + pn = r.pn; + ++*pn; + } + + shared_ptr & operator=(shared_ptr const & r) + { + shared_ptr(r).swap(*this); + return *this; + } + +#ifndef BOOST_NO_AUTO_PTR + + explicit shared_ptr(std::auto_ptr & r) + { + pn = new count_type(1); // may throw + px = r.release(); // fix: moved here to stop leak if new throws + } + + shared_ptr & operator=(std::auto_ptr & r) + { + shared_ptr(r).swap(*this); + return *this; + } + +#endif + + void reset(T * p = 0) + { + BOOST_ASSERT(p == 0 || p != px); + shared_ptr(p).swap(*this); + } + + T & operator*() const // never throws + { + BOOST_ASSERT(px != 0); + return *px; + } + + T * operator->() const // never throws + { + BOOST_ASSERT(px != 0); + return px; + } + + T * get() const // never throws + { + return px; + } + + long use_count() const // never throws + { + return *pn; + } + + bool unique() const // never throws + { + return *pn == 1; + } + + void swap(shared_ptr & other) // never throws + { + std::swap(px, other.px); + std::swap(pn, other.pn); + } + +private: + + T * px; // contained pointer + count_type * pn; // ptr to reference counter +}; + +template inline bool operator==(shared_ptr const & a, shared_ptr const & b) +{ + return a.get() == b.get(); +} + +template inline bool operator!=(shared_ptr const & a, shared_ptr const & b) +{ + return a.get() != b.get(); +} + +template inline bool operator<(shared_ptr const & a, shared_ptr const & b) +{ + return std::less()(a.get(), b.get()); +} + +template void swap(shared_ptr & a, shared_ptr & b) +{ + a.swap(b); +} + +// get_pointer() enables cutl_details_boost::mem_fn to recognize shared_ptr + +template inline T * get_pointer(shared_ptr const & p) +{ + return p.get(); +} + +} // namespace cutl_details_boost + +#endif // #ifndef BOOST_SMART_PTR_DETAIL_SHARED_PTR_NMT_HPP_INCLUDED -- cgit v1.2.3