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- //
- // detail/impl/null_event.ipp
- // ~~~~~~~~~~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2019 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 ASIO_DETAIL_IMPL_NULL_EVENT_IPP
- #define ASIO_DETAIL_IMPL_NULL_EVENT_IPP
-
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
- #include "asio/detail/config.hpp"
-
- #if defined(ASIO_WINDOWS_RUNTIME)
- # include <thread>
- #elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
- # include "asio/detail/socket_types.hpp"
- #else
- # include <unistd.h>
- # if defined(__hpux)
- # include <sys/time.h>
- # endif
- # if !defined(__hpux) || defined(__SELECT)
- # include <sys/select.h>
- # endif
- #endif
-
- #include "asio/detail/push_options.hpp"
-
- namespace asio {
- namespace detail {
-
- void null_event::do_wait()
- {
- #if defined(ASIO_WINDOWS_RUNTIME)
- std::this_thread::sleep_until((std::chrono::steady_clock::time_point::max)());
- #elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
- ::Sleep(INFINITE);
- #else
- ::pause();
- #endif
- }
-
- void null_event::do_wait_for_usec(long usec)
- {
- #if defined(ASIO_WINDOWS_RUNTIME)
- std::this_thread::sleep_for(std::chrono::microseconds(usec));
- #elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
- ::Sleep(usec / 1000);
- #elif defined(__hpux) && defined(__SELECT)
- timespec ts;
- ts.tv_sec = usec / 1000000;
- ts.tv_nsec = (usec % 1000000) * 1000;
- ::pselect(0, 0, 0, 0, &ts, 0);
- #else
- timeval tv;
- tv.tv_sec = usec / 1000000;
- tv.tv_usec = usec % 1000000;
- ::select(0, 0, 0, 0, &tv);
- #endif
- }
-
- } // namespace detail
- } // namespace asio
-
- #include "asio/detail/pop_options.hpp"
-
- #endif // ASIO_DETAIL_IMPL_NULL_EVENT_IPP
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