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00001 // 00002 // win_signal_blocker.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_WIN_SIGNAL_BLOCKER_HPP 00012 #define ASIO_DETAIL_WIN_SIGNAL_BLOCKER_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 00028 namespace asio { 00029 namespace detail { 00030 00031 class win_signal_blocker 00032 : private noncopyable 00033 { 00034 public: 00035 // Constructor blocks all signals for the calling thread. 00036 win_signal_blocker() 00037 { 00038 // No-op. 00039 } 00040 00041 // Destructor restores the previous signal mask. 00042 ~win_signal_blocker() 00043 { 00044 // No-op. 00045 } 00046 00047 // Block all signals for the calling thread. 00048 void block() 00049 { 00050 // No-op. 00051 } 00052 00053 // Restore the previous signal mask. 00054 void unblock() 00055 { 00056 // No-op. 00057 } 00058 }; 00059 00060 } // namespace detail 00061 } // namespace asio 00062 00063 #endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__) 00064 00065 #include "asio/detail/pop_options.hpp" 00066 00067 #endif // ASIO_DETAIL_WIN_SIGNAL_BLOCKER_HPP