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00001 // 00002 // local_free_on_block_exit.hpp 00003 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 00004 // 00005 // Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com) 00006 // 00007 // Distributed under the Boost Software License, Version 1.0. (See accompanying 00008 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 00009 // 00010 00011 #ifndef ASIO_DETAIL_LOCAL_FREE_ON_BLOCK_EXIT_HPP 00012 #define ASIO_DETAIL_LOCAL_FREE_ON_BLOCK_EXIT_HPP 00013 00014 #if defined(_MSC_VER) && (_MSC_VER >= 1200) 00015 # pragma once 00016 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) 00017 00018 #include "asio/detail/push_options.hpp" 00019 00020 #include "asio/detail/push_options.hpp" 00021 #include <boost/config.hpp> 00022 #include "asio/detail/pop_options.hpp" 00023 00024 #if defined(BOOST_WINDOWS) || defined(__CYGWIN__) 00025 00026 #include "asio/detail/noncopyable.hpp" 00027 #include "asio/detail/socket_types.hpp" 00028 00029 namespace asio { 00030 namespace detail { 00031 00032 class local_free_on_block_exit 00033 : private noncopyable 00034 { 00035 public: 00036 // Constructor blocks all signals for the calling thread. 00037 explicit local_free_on_block_exit(void* p) 00038 : p_(p) 00039 { 00040 } 00041 00042 // Destructor restores the previous signal mask. 00043 ~local_free_on_block_exit() 00044 { 00045 ::LocalFree(p_); 00046 } 00047 00048 private: 00049 void* p_; 00050 }; 00051 00052 } // namespace detail 00053 } // namespace asio 00054 00055 #endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__) 00056 00057 #include "asio/detail/pop_options.hpp" 00058 00059 #endif // ASIO_DETAIL_LOCAL_FREE_ON_BLOCK_EXIT_HPP