boost/asio/detail/local_free_on_block_exit.hpp

   1 //
   2 // local_free_on_block_exit.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2008 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/push_options.hpp>
  19
  20 #include <boost/asio/detail/push_options.hpp>
  21 #include <boost/config.hpp>
  22 #include <boost/asio/detail/pop_options.hpp>
  23
  24 #if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
  25
  26 #include <boost/asio/detail/noncopyable.hpp>
  27 #include <boost/asio/detail/socket_types.hpp>
  28
  29 namespace boost {
  30 namespace asio {
  31 namespace detail {
  32
  33 class local_free_on_block_exit
  34   : private noncopyable
  35 {
  36 public:
  37   // Constructor blocks all signals for the calling thread.
  38   explicit local_free_on_block_exit(void* p)
  39     : p_(p)
  40   {
  41   }
  42
  43   // Destructor restores the previous signal mask.
  44   ~local_free_on_block_exit()
  45   {
  46     ::LocalFree(p_);
  47   }
  48
  49 private:
  50   void* p_;
  51 };
  52
  53 } // namespace detail
  54 } // namespace asio
  55 } // namespace boost
  56
  57 #endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
  58
  59 #include <boost/asio/detail/pop_options.hpp>
  60
  61 #endif // BOOST_ASIO_DETAIL_LOCAL_FREE_ON_BLOCK_EXIT_HPP