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  1. //
  2. // detail/win_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_WIN_STATIC_MUTEX_HPP
  11. #define ASIO_DETAIL_WIN_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_WINDOWS)
  17. #include "asio/detail/scoped_lock.hpp"
  18. #include "asio/detail/push_options.hpp"
  19. namespace asio {
  20. namespace detail {
  21. struct win_static_mutex
  22. {
  23. typedef asio::detail::scoped_lock<win_static_mutex> scoped_lock;
  24. // Initialise the mutex.
  25. ASIO_DECL void init();
  26. // Initialisation must be performed in a separate function to the "public"
  27. // init() function since the compiler does not support the use of structured
  28. // exceptions and C++ exceptions in the same function.
  29. ASIO_DECL int do_init();
  30. // Lock the mutex.
  31. void lock()
  32. {
  33. ::EnterCriticalSection(&crit_section_);
  34. }
  35. // Unlock the mutex.
  36. void unlock()
  37. {
  38. ::LeaveCriticalSection(&crit_section_);
  39. }
  40. bool initialised_;
  41. ::CRITICAL_SECTION crit_section_;
  42. };
  43. #if defined(UNDER_CE)
  44. # define ASIO_WIN_STATIC_MUTEX_INIT { false, { 0, 0, 0, 0, 0 } }
  45. #else // defined(UNDER_CE)
  46. # define ASIO_WIN_STATIC_MUTEX_INIT { false, { 0, 0, 0, 0, 0, 0 } }
  47. #endif // defined(UNDER_CE)
  48. } // namespace detail
  49. } // namespace asio
  50. #include "asio/detail/pop_options.hpp"
  51. #if defined(ASIO_HEADER_ONLY)
  52. # include "asio/detail/impl/win_static_mutex.ipp"
  53. #endif // defined(ASIO_HEADER_ONLY)
  54. #endif // defined(ASIO_WINDOWS)
  55. #endif // ASIO_DETAIL_WIN_STATIC_MUTEX_HPP