detail/impl/winsock_init.ipp

0001 //
0002 // detail/impl/winsock_init.ipp
0003 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0004 //
0005 // Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
0006 //
0007 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0008 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0009 //
0010
0011 #ifndef BOOST_ASIO_DETAIL_IMPL_WINSOCK_INIT_IPP
0012 #define BOOST_ASIO_DETAIL_IMPL_WINSOCK_INIT_IPP
0013
0014 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
0015 # pragma once
0016 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
0017
0018 #include <boost/asio/detail/config.hpp>
0019
0020 #if defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
0021
0022 #include <boost/asio/detail/socket_types.hpp>
0023 #include <boost/asio/detail/winsock_init.hpp>
0024 #include <boost/asio/detail/throw_error.hpp>
0025 #include <boost/asio/error.hpp>
0026
0027 #include <boost/asio/detail/push_options.hpp>
0028
0029 namespace boost {
0030 namespace asio {
0031 namespace detail {
0032
0033 void winsock_init_base::startup(data& d,
0034     unsigned char major, unsigned char minor)
0035 {
0036   if (::InterlockedIncrement(&d.init_count_) == 1)
0037   {
0038     WSADATA wsa_data;
0039     long result = ::WSAStartup(MAKEWORD(major, minor), &wsa_data);
0040     ::InterlockedExchange(&d.result_, result);
0041   }
0042 }
0043
0044 void winsock_init_base::manual_startup(data& d)
0045 {
0046   if (::InterlockedIncrement(&d.init_count_) == 1)
0047   {
0048     ::InterlockedExchange(&d.result_, 0);
0049   }
0050 }
0051
0052 void winsock_init_base::cleanup(data& d)
0053 {
0054   if (::InterlockedDecrement(&d.init_count_) == 0)
0055   {
0056     ::WSACleanup();
0057   }
0058 }
0059
0060 void winsock_init_base::manual_cleanup(data& d)
0061 {
0062   ::InterlockedDecrement(&d.init_count_);
0063 }
0064
0065 void winsock_init_base::throw_on_error(data& d)
0066 {
0067   long result = ::InterlockedExchangeAdd(&d.result_, 0);
0068   if (result != 0)
0069   {
0070     boost::system::error_code ec(result,
0071         boost::asio::error::get_system_category());
0072     boost::asio::detail::throw_error(ec, "winsock");
0073   }
0074 }
0075
0076 } // namespace detail
0077 } // namespace asio
0078 } // namespace boost
0079
0080 #include <boost/asio/detail/pop_options.hpp>
0081
0082 #endif // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
0083
0084 #endif // BOOST_ASIO_DETAIL_IMPL_WINSOCK_INIT_IPP