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Diffstat (limited to '3rdParty/Boost/src/boost/asio/detail/winsock_init.hpp')
-rw-r--r--3rdParty/Boost/src/boost/asio/detail/winsock_init.hpp122
1 files changed, 122 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/asio/detail/winsock_init.hpp b/3rdParty/Boost/src/boost/asio/detail/winsock_init.hpp
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+++ b/3rdParty/Boost/src/boost/asio/detail/winsock_init.hpp
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+//
+// winsock_init.hpp
+// ~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2008 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/push_options.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+#include <boost/config.hpp>
+#include <boost/system/system_error.hpp>
+#include <boost/asio/detail/pop_options.hpp>
+
+#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
+
+#include <boost/asio/detail/push_options.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/asio/detail/pop_options.hpp>
+
+#include <boost/asio/error.hpp>
+#include <boost/asio/detail/noncopyable.hpp>
+#include <boost/asio/detail/socket_types.hpp>
+
+namespace boost {
+namespace asio {
+namespace detail {
+
+template <int Major = 2, int Minor = 0>
+class winsock_init
+ : private noncopyable
+{
+private:
+ // Structure to perform the actual initialisation.
+ struct do_init
+ {
+ do_init()
+ {
+ WSADATA wsa_data;
+ result_ = ::WSAStartup(MAKEWORD(Major, Minor), &wsa_data);
+ }
+
+ ~do_init()
+ {
+ ::WSACleanup();
+ }
+
+ int result() const
+ {
+ return result_;
+ }
+
+ // Helper function to manage a do_init singleton. The static instance of the
+ // winsock_init object ensures that this function is always called before
+ // main, and therefore before any other threads can get started. The do_init
+ // instance must be static in this function to ensure that it gets
+ // initialised before any other global objects try to use it.
+ static boost::shared_ptr<do_init> instance()
+ {
+ static boost::shared_ptr<do_init> init(new do_init);
+ return init;
+ }
+
+ private:
+ int result_;
+ };
+
+public:
+ // Constructor.
+ winsock_init()
+ : ref_(do_init::instance())
+ {
+ // Check whether winsock was successfully initialised. This check is not
+ // performed for the global instance since there will be nobody around to
+ // catch the exception.
+ if (this != &instance_ && ref_->result() != 0)
+ {
+ boost::system::system_error e(
+ boost::system::error_code(ref_->result(),
+ boost::asio::error::get_system_category()),
+ "winsock");
+ boost::throw_exception(e);
+ }
+ }
+
+ // Destructor.
+ ~winsock_init()
+ {
+ }
+
+private:
+ // Instance to force initialisation of winsock at global scope.
+ static winsock_init instance_;
+
+ // Reference to singleton do_init object to ensure that winsock does not get
+ // cleaned up until the last user has finished with it.
+ boost::shared_ptr<do_init> ref_;
+};
+
+template <int Major, int Minor>
+winsock_init<Major, Minor> winsock_init<Major, Minor>::instance_;
+
+} // namespace detail
+} // namespace asio
+} // namespace boost
+
+#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // BOOST_ASIO_DETAIL_WINSOCK_INIT_HPP