// // detail/win_event.hpp // ~~~~~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2011 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_WIN_EVENT_HPP #define BOOST_ASIO_DETAIL_WIN_EVENT_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include <boost/asio/detail/config.hpp> #if defined(BOOST_WINDOWS) #include <boost/assert.hpp> #include <boost/asio/detail/noncopyable.hpp> #include <boost/asio/detail/socket_types.hpp> #include <boost/asio/detail/push_options.hpp> namespace boost { namespace asio { namespace detail { class win_event : private noncopyable { public: // Constructor. BOOST_ASIO_DECL win_event(); // Destructor. ~win_event() { ::CloseHandle(event_); } // Signal the event. template <typename Lock> void signal(Lock& lock) { BOOST_ASSERT(lock.locked()); (void)lock; ::SetEvent(event_); } // Signal the event and unlock the mutex. template <typename Lock> void signal_and_unlock(Lock& lock) { BOOST_ASSERT(lock.locked()); lock.unlock(); ::SetEvent(event_); } // Reset the event. template <typename Lock> void clear(Lock& lock) { BOOST_ASSERT(lock.locked()); (void)lock; ::ResetEvent(event_); } // Wait for the event to become signalled. template <typename Lock> void wait(Lock& lock) { BOOST_ASSERT(lock.locked()); lock.unlock(); ::WaitForSingleObject(event_, INFINITE); lock.lock(); } private: HANDLE event_; }; } // namespace detail } // namespace asio } // namespace boost #include <boost/asio/detail/pop_options.hpp> #if defined(BOOST_ASIO_HEADER_ONLY) # include <boost/asio/detail/impl/win_event.ipp> #endif // defined(BOOST_ASIO_HEADER_ONLY) #endif // defined(BOOST_WINDOWS) #endif // BOOST_ASIO_DETAIL_WIN_EVENT_HPP