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//
// detail/impl/null_event.ipp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 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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