1//
2// detail/impl/posix_event.ipp
3// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
4//
5// Copyright (c) 2003-2021 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_IMPL_POSIX_EVENT_IPP
12#define BOOST_ASIO_DETAIL_IMPL_POSIX_EVENT_IPP
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/config.hpp>
19
20#if defined(BOOST_ASIO_HAS_PTHREADS)
21
22#include <boost/asio/detail/posix_event.hpp>
23#include <boost/asio/detail/throw_error.hpp>
24#include <boost/asio/error.hpp>
25
26#include <boost/asio/detail/push_options.hpp>
27
28namespace boost {
29namespace asio {
30namespace detail {
31
32posix_event::posix_event()
33  : state_(0)
34{
35#if (defined(__MACH__) && defined(__APPLE__)) \
36      || (defined(__ANDROID__) && (__ANDROID_API__ < 21))
37  int error = ::pthread_cond_init(&cond_, 0);
38#else // (defined(__MACH__) && defined(__APPLE__))
39      // || (defined(__ANDROID__) && (__ANDROID_API__ < 21))
40  ::pthread_condattr_t attr;
41  int error = ::pthread_condattr_init(&attr);
42  if (error == 0)
43  {
44    error = ::pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
45    if (error == 0)
46      error = ::pthread_cond_init(&cond_, &attr);
47    ::pthread_condattr_destroy(&attr);
48  }
49#endif // (defined(__MACH__) && defined(__APPLE__))
50       // || (defined(__ANDROID__) && (__ANDROID_API__ < 21))
51
52  boost::system::error_code ec(error,
53      boost::asio::error::get_system_category());
54  boost::asio::detail::throw_error(ec, "event");
55}
56
57} // namespace detail
58} // namespace asio
59} // namespace boost
60
61#include <boost/asio/detail/pop_options.hpp>
62
63#endif // defined(BOOST_ASIO_HAS_PTHREADS)
64
65#endif // BOOST_ASIO_DETAIL_IMPL_POSIX_EVENT_IPP
66