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  1. //
  2. // detail/posix_static_mutex.hpp
  3. // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  4. //
  5. // Copyright (c) 2003-2015 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 ASIO_DETAIL_POSIX_STATIC_MUTEX_HPP
  11. #define 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 "asio/detail/config.hpp"
  16. #if defined(ASIO_HAS_PTHREADS)
  17. #include <pthread.h>
  18. #include "asio/detail/scoped_lock.hpp"
  19. #include "asio/detail/push_options.hpp"
  20. namespace asio {
  21. namespace detail {
  22. struct posix_static_mutex
  23. {
  24. typedef asio::detail::scoped_lock<posix_static_mutex> scoped_lock;
  25. // Initialise the mutex.
  26. void init()
  27. {
  28. // Nothing to do.
  29. }
  30. // Lock the mutex.
  31. void lock()
  32. {
  33. (void)::pthread_mutex_lock(&mutex_); // Ignore EINVAL.
  34. }
  35. // Unlock the mutex.
  36. void unlock()
  37. {
  38. (void)::pthread_mutex_unlock(&mutex_); // Ignore EINVAL.
  39. }
  40. ::pthread_mutex_t mutex_;
  41. };
  42. #define ASIO_POSIX_STATIC_MUTEX_INIT { PTHREAD_MUTEX_INITIALIZER }
  43. } // namespace detail
  44. } // namespace asio
  45. #include "asio/detail/pop_options.hpp"
  46. #endif // defined(ASIO_HAS_PTHREADS)
  47. #endif // ASIO_DETAIL_POSIX_STATIC_MUTEX_HPP