/src/contrib/boost/asio/detail/win_fd_set_adapter.hpp
http://pythonocc.googlecode.com/ · C++ Header · 90 lines · 60 code · 18 blank · 12 comment · 6 complexity · c1deed58308108c9c5b0819a678a744e MD5 · raw file
- //
- // win_fd_set_adapter.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_WIN_FD_SET_ADAPTER_HPP
- #define BOOST_ASIO_DETAIL_WIN_FD_SET_ADAPTER_HPP
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
- #include <boost/asio/detail/push_options.hpp>
- #include <boost/asio/detail/socket_types.hpp>
- #if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- namespace boost {
- namespace asio {
- namespace detail {
- // Adapts the FD_SET type to meet the Descriptor_Set concept's requirements.
- class win_fd_set_adapter
- {
- public:
- enum { win_fd_set_size = 1024 };
- win_fd_set_adapter()
- : max_descriptor_(invalid_socket)
- {
- fd_set_.fd_count = 0;
- }
- bool set(socket_type descriptor)
- {
- for (u_int i = 0; i < fd_set_.fd_count; ++i)
- if (fd_set_.fd_array[i] == descriptor)
- return true;
- if (fd_set_.fd_count < win_fd_set_size)
- {
- fd_set_.fd_array[fd_set_.fd_count++] = descriptor;
- return true;
- }
- return false;
- }
- bool is_set(socket_type descriptor) const
- {
- return !!__WSAFDIsSet(descriptor,
- const_cast<fd_set*>(reinterpret_cast<const fd_set*>(&fd_set_)));
- }
- operator fd_set*()
- {
- return reinterpret_cast<fd_set*>(&fd_set_);
- }
- socket_type max_descriptor() const
- {
- return max_descriptor_;
- }
- private:
- // This structure is defined to be compatible with the Windows API fd_set
- // structure, but without being dependent on the value of FD_SETSIZE.
- struct win_fd_set
- {
- u_int fd_count;
- SOCKET fd_array[win_fd_set_size];
- };
- win_fd_set fd_set_;
- socket_type max_descriptor_;
- };
- } // namespace detail
- } // namespace asio
- } // namespace boost
- #endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- #include <boost/asio/detail/pop_options.hpp>
- #endif // BOOST_ASIO_DETAIL_WIN_FD_SET_ADAPTER_HPP