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Diffstat (limited to 'lib/asio/detail/winsock_init.hpp')
-rw-r--r-- | lib/asio/detail/winsock_init.hpp | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/lib/asio/detail/winsock_init.hpp b/lib/asio/detail/winsock_init.hpp deleted file mode 100644 index 9094363..0000000 --- a/lib/asio/detail/winsock_init.hpp +++ /dev/null @@ -1,128 +0,0 @@ -// -// detail/winsock_init.hpp -// ~~~~~~~~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2018 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 ASIO_DETAIL_WINSOCK_INIT_HPP -#define ASIO_DETAIL_WINSOCK_INIT_HPP - -#if defined(_MSC_VER) && (_MSC_VER >= 1200) -# pragma once -#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) - -#include "asio/detail/config.hpp" - -#if defined(ASIO_WINDOWS) || defined(__CYGWIN__) - -#include "asio/detail/push_options.hpp" - -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_; - }; - - ASIO_DECL static void startup(data& d, - unsigned char major, unsigned char minor); - - ASIO_DECL static void manual_startup(data& d); - - ASIO_DECL static void cleanup(data& d); - - ASIO_DECL static void manual_cleanup(data& d); - - 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_); - } - - // This class may be used to indicate that user code will manage Winsock - // initialisation and cleanup. This may be required in the case of a DLL, for - // example, where it is not safe to initialise Winsock from global object - // constructors. - // - // To prevent asio from initialising Winsock, the object must be constructed - // before any Asio's own global objects. With MSVC, this may be accomplished - // by adding the following code to the DLL: - // - // #pragma warning(push) - // #pragma warning(disable:4073) - // #pragma init_seg(lib) - // asio::detail::winsock_init<>::manual manual_winsock_init; - // #pragma warning(pop) - class manual - { - public: - manual() - { - manual_startup(data_); - } - - manual(const manual&) - { - manual_startup(data_); - } - - ~manual() - { - manual_cleanup(data_); - } - }; - -private: - friend class manual; - 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 - -#include "asio/detail/pop_options.hpp" - -#if defined(ASIO_HEADER_ONLY) -# include "asio/detail/impl/winsock_init.ipp" -#endif // defined(ASIO_HEADER_ONLY) - -#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__) - -#endif // ASIO_DETAIL_WINSOCK_INIT_HPP |