1//
2// detail/impl/winsock_init.ipp
3// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4//
5// Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
6//
7// Distributed under the Boost Software License, Version 1.0. (See accompanying
8// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
9//
10
11#ifndef ASIO_DETAIL_IMPL_WINSOCK_INIT_IPP
12#define ASIO_DETAIL_IMPL_WINSOCK_INIT_IPP
13
14#if defined(_MSC_VER) && (_MSC_VER >= 1200)
15# pragma once
16#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
17
18#include "asio/detail/config.hpp"
19
20#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
21
22#include "asio/detail/socket_types.hpp"
23#include "asio/detail/winsock_init.hpp"
24#include "asio/detail/throw_error.hpp"
25#include "asio/error.hpp"
26
27#include "asio/detail/push_options.hpp"
28
29namespace asio {
30namespace detail {
31
32void winsock_init_base::startup(data& d,
33    unsigned char major, unsigned char minor)
34{
35  if (::InterlockedIncrement(&d.init_count_) == 1)
36  {
37    WSADATA wsa_data;
38    long result = ::WSAStartup(MAKEWORD(major, minor), &wsa_data);
39    ::InterlockedExchange(&d.result_, result);
40  }
41}
42
43void winsock_init_base::manual_startup(data& d)
44{
45  if (::InterlockedIncrement(&d.init_count_) == 1)
46  {
47    ::InterlockedExchange(&d.result_, 0);
48  }
49}
50
51void winsock_init_base::cleanup(data& d)
52{
53  if (::InterlockedDecrement(&d.init_count_) == 0)
54  {
55    ::WSACleanup();
56  }
57}
58
59void winsock_init_base::manual_cleanup(data& d)
60{
61  ::InterlockedDecrement(&d.init_count_);
62}
63
64void winsock_init_base::throw_on_error(data& d)
65{
66  long result = ::InterlockedExchangeAdd(&d.result_, 0);
67  if (result != 0)
68  {
69    asio::error_code ec(result,
70        asio::error::get_system_category());
71    asio::detail::throw_error(ec, "winsock");
72  }
73}
74
75} // namespace detail
76} // namespace asio
77
78#include "asio/detail/pop_options.hpp"
79
80#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
81
82#endif // ASIO_DETAIL_IMPL_WINSOCK_INIT_IPP
83