posix_static_mutex.hpp 1.4 KB

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  1. //
  2. // detail/posix_static_mutex.hpp
  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. #ifndef BOOST_ASIO_DETAIL_POSIX_STATIC_MUTEX_HPP
  11. #define BOOST_ASIO_DETAIL_POSIX_STATIC_MUTEX_HPP
  12. #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  13. # pragma once
  14. #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  15. #include <boost/asio/detail/config.hpp>
  16. #if defined(BOOST_ASIO_HAS_PTHREADS)
  17. #include <pthread.h>
  18. #include <boost/asio/detail/scoped_lock.hpp>
  19. #include <boost/asio/detail/push_options.hpp>
  20. namespace boost {
  21. namespace asio {
  22. namespace detail {
  23. struct posix_static_mutex
  24. {
  25. typedef boost::asio::detail::scoped_lock<posix_static_mutex> scoped_lock;
  26. // Initialise the mutex.
  27. void init()
  28. {
  29. // Nothing to do.
  30. }
  31. // Lock the mutex.
  32. void lock()
  33. {
  34. (void)::pthread_mutex_lock(&mutex_); // Ignore EINVAL.
  35. }
  36. // Unlock the mutex.
  37. void unlock()
  38. {
  39. (void)::pthread_mutex_unlock(&mutex_); // Ignore EINVAL.
  40. }
  41. ::pthread_mutex_t mutex_;
  42. };
  43. #define BOOST_ASIO_POSIX_STATIC_MUTEX_INIT { PTHREAD_MUTEX_INITIALIZER }
  44. } // namespace detail
  45. } // namespace asio
  46. } // namespace boost
  47. #include <boost/asio/detail/pop_options.hpp>
  48. #endif // defined(BOOST_ASIO_HAS_PTHREADS)
  49. #endif // BOOST_ASIO_DETAIL_POSIX_STATIC_MUTEX_HPP