1 // 2 // detail/local_free_on_block_exit.hpp 3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4 // 5 // Copyright (c) 2003-2015 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 BOOST_ASIO_DETAIL_LOCAL_FREE_ON_BLOCK_EXIT_HPP 12 #define BOOST_ASIO_DETAIL_LOCAL_FREE_ON_BLOCK_EXIT_HPP 13 14 #if defined(_MSC_VER) && (_MSC_VER >= 1200) 15 # pragma once 16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) 17 18 #include <boost/asio/detail/config.hpp> 19 20 #if defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__) 21 22 #include <boost/asio/detail/noncopyable.hpp> 23 #include <boost/asio/detail/socket_types.hpp> 24 25 #include <boost/asio/detail/push_options.hpp> 26 27 namespace boost { 28 namespace asio { 29 namespace detail { 30 31 class local_free_on_block_exit 32 : private noncopyable 33 { 34 public: 35 // Constructor blocks all signals for the calling thread. local_free_on_block_exit(void * p)36 explicit local_free_on_block_exit(void* p) 37 : p_(p) 38 { 39 } 40 41 // Destructor restores the previous signal mask. ~local_free_on_block_exit()42 ~local_free_on_block_exit() 43 { 44 ::LocalFree(p_); 45 } 46 47 private: 48 void* p_; 49 }; 50 51 } // namespace detail 52 } // namespace asio 53 } // namespace boost 54 55 #include <boost/asio/detail/pop_options.hpp> 56 57 #endif // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__) 58 59 #endif // BOOST_ASIO_DETAIL_LOCAL_FREE_ON_BLOCK_EXIT_HPP 60