// | |
// detail/handler_alloc_helpers.hpp | |
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
// | |
// Copyright (c) 2003-2011 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 |