// // detail/handler_alloc_helpers.hpp // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2014 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/asio/detail/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 !defined(BOOST_ASIO_HAS_HANDLER_HOOKS) return ::operator new(s); #else using boost::asio::asio_handler_allocate; return asio_handler_allocate(s, boost::asio::detail::addressof(h)); #endif } template <typename Handler> inline void deallocate(void* p, std::size_t s, Handler& h) { #if !defined(BOOST_ASIO_HAS_HANDLER_HOOKS) ::operator delete(p); #else using boost::asio::asio_handler_deallocate; asio_handler_deallocate(p, s, boost::asio::detail::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