| // |
| // detail/handler_alloc_helpers.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2010 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
| // |
| // 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) |
| // |
| |
| #ifndef BOOST_ASIO_DETAIL_HANDLER_ALLOC_HELPERS_HPP |
| #define BOOST_ASIO_DETAIL_HANDLER_ALLOC_HELPERS_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include <boost/asio/detail/config.hpp> |
| #include <boost/detail/workaround.hpp> |
| #include <boost/utility/addressof.hpp> |
| #include <boost/asio/detail/noncopyable.hpp> |
| #include <boost/asio/handler_alloc_hook.hpp> |
| |
| #include <boost/asio/detail/push_options.hpp> |
| |
| // Calls to asio_handler_allocate and asio_handler_deallocate must be made from |
| // a namespace that does not contain any overloads of these functions. The |
| // boost_asio_handler_alloc_helpers namespace is defined here for that purpose. |
| namespace boost_asio_handler_alloc_helpers { |
| |
| template <typename Handler> |
| inline void* allocate(std::size_t s, Handler& h) |
| { |
| #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) \ |
| || BOOST_WORKAROUND(__GNUC__, < 3) |
| return ::operator new(s); |
| #else |
| using namespace boost::asio; |
| return asio_handler_allocate(s, boost::addressof(h)); |
| #endif |
| } |
| |
| template <typename Handler> |
| inline void deallocate(void* p, std::size_t s, Handler& h) |
| { |
| #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) \ |
| || BOOST_WORKAROUND(__GNUC__, < 3) |
| ::operator delete(p); |
| #else |
| using namespace boost::asio; |
| asio_handler_deallocate(p, s, boost::addressof(h)); |
| #endif |
| } |
| |
| } // namespace boost_asio_handler_alloc_helpers |
| |
| #define BOOST_ASIO_DEFINE_HANDLER_PTR(op) \ |
| struct ptr \ |
| { \ |
| Handler* h; \ |
| void* v; \ |
| op* p; \ |
| ~ptr() \ |
| { \ |
| reset(); \ |
| } \ |
| void reset() \ |
| { \ |
| if (p) \ |
| { \ |
| p->~op(); \ |
| p = 0; \ |
| } \ |
| if (v) \ |
| { \ |
| boost_asio_handler_alloc_helpers::deallocate(v, sizeof(op), *h); \ |
| v = 0; \ |
| } \ |
| } \ |
| } \ |
| /**/ |
| |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #endif // BOOST_ASIO_DETAIL_HANDLER_ALLOC_HELPERS_HPP |