text: //
  // detail/winsock_init.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_WINSOCK_INIT_HPP
  #define BOOST_ASIO_DETAIL_WINSOCK_INIT_HPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  
  #include <boost/asio/detail/config.hpp>
  
  #if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
  
  #include <boost/asio/detail/push_options.hpp>
  
  namespace riakboost{} namespace boost = riakboost; namespace riakboost{
  namespace asio {
  namespace detail {
  
  class winsock_init_base
  {
  protected:
    // Structure to track result of initialisation and number of uses. POD is used
    // to ensure that the values are zero-initialised prior to any code being run.
    struct data
    {
      long init_count_;
      long result_;
    };
  
    BOOST_ASIO_DECL static void startup(data& d,
        unsigned char major, unsigned char minor);
  
    BOOST_ASIO_DECL static void cleanup(data& d);
  
    BOOST_ASIO_DECL static void throw_on_error(data& d);
  };
  
  template <int Major = 2, int Minor = 0>
  class winsock_init : private winsock_init_base
  {
  public:
    winsock_init(bool allow_throw = true)
    {
      startup(data_, Major, Minor);
      if (allow_throw)
        throw_on_error(data_);
    }
  
    winsock_init(const winsock_init&)
    {
      startup(data_, Major, Minor);
      throw_on_error(data_);
    }
  
    ~winsock_init()
    {
      cleanup(data_);
    }
  
  private:
    static data data_;
  };
  
  template <int Major, int Minor>
  winsock_init_base::data winsock_init<Major, Minor>::data_;
  
  // Static variable to ensure that winsock is initialised before main, and
  // therefore before any other threads can get started.
  static const winsock_init<>& winsock_init_instance = winsock_init<>(false);
  
  } // namespace detail
  } // namespace asio
  } // namespace riakboost
  
  #include <boost/asio/detail/pop_options.hpp>
  
  #if defined(BOOST_ASIO_HEADER_ONLY)
  # include <boost/asio/detail/impl/winsock_init.ipp>
  #endif // defined(BOOST_ASIO_HEADER_ONLY)
  
  #endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
  
  #endif // BOOST_ASIO_DETAIL_WINSOCK_INIT_HPP
  