/Src/Dependencies/Boost/boost/asio/detail/win_iocp_overlapped_op.hpp

http://hadesmem.googlecode.com/ · C++ Header · 90 lines · 55 code · 18 blank · 17 comment · 2 complexity · 46b8befc9e2ad36793a9f8ca3f639e3e MD5 · raw file

  1. //
  2. // detail/win_iocp_overlapped_op.hpp
  3. // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  4. //
  5. // Copyright (c) 2003-2011 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_WIN_IOCP_OVERLAPPED_OP_HPP
  11. #define BOOST_ASIO_DETAIL_WIN_IOCP_OVERLAPPED_OP_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_IOCP)
  17. #include <boost/asio/error.hpp>
  18. #include <boost/utility/addressof.hpp>
  19. #include <boost/asio/detail/bind_handler.hpp>
  20. #include <boost/asio/detail/fenced_block.hpp>
  21. #include <boost/asio/detail/handler_alloc_helpers.hpp>
  22. #include <boost/asio/detail/handler_invoke_helpers.hpp>
  23. #include <boost/asio/detail/operation.hpp>
  24. #include <boost/asio/detail/push_options.hpp>
  25. namespace boost {
  26. namespace asio {
  27. namespace detail {
  28. template <typename Handler>
  29. class win_iocp_overlapped_op : public operation
  30. {
  31. public:
  32. BOOST_ASIO_DEFINE_HANDLER_PTR(win_iocp_overlapped_op);
  33. win_iocp_overlapped_op(Handler& handler)
  34. : operation(&win_iocp_overlapped_op::do_complete),
  35. handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler))
  36. {
  37. }
  38. static void do_complete(io_service_impl* owner, operation* base,
  39. boost::system::error_code ec, std::size_t bytes_transferred)
  40. {
  41. // Take ownership of the operation object.
  42. win_iocp_overlapped_op* o(static_cast<win_iocp_overlapped_op*>(base));
  43. ptr p = { boost::addressof(o->handler_), o, o };
  44. BOOST_ASIO_HANDLER_COMPLETION((o));
  45. // Make a copy of the handler so that the memory can be deallocated before
  46. // the upcall is made. Even if we're not about to make an upcall, a
  47. // sub-object of the handler may be the true owner of the memory associated
  48. // with the handler. Consequently, a local copy of the handler is required
  49. // to ensure that any owning sub-object remains valid until after we have
  50. // deallocated the memory here.
  51. detail::binder2<Handler, boost::system::error_code, std::size_t>
  52. handler(o->handler_, ec, bytes_transferred);
  53. p.h = boost::addressof(handler.handler_);
  54. p.reset();
  55. // Make the upcall if required.
  56. if (owner)
  57. {
  58. boost::asio::detail::fenced_block b;
  59. BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_));
  60. boost_asio_handler_invoke_helpers::invoke(handler, handler.handler_);
  61. BOOST_ASIO_HANDLER_INVOCATION_END;
  62. }
  63. }
  64. private:
  65. Handler handler_;
  66. };
  67. } // namespace detail
  68. } // namespace asio
  69. } // namespace boost
  70. #include <boost/asio/detail/pop_options.hpp>
  71. #endif // defined(BOOST_ASIO_HAS_IOCP)
  72. #endif // BOOST_ASIO_DETAIL_WIN_IOCP_OVERLAPPED_OP_HPP