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null_reactor.hpp 1.4KB

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  1. //
  2. // detail/null_reactor.hpp
  3. // ~~~~~~~~~~~~~~~~~~~~~~~
  4. //
  5. // Copyright (c) 2003-2019 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_NULL_REACTOR_HPP
  11. #define ASIO_DETAIL_NULL_REACTOR_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_IOCP) || defined(ASIO_WINDOWS_RUNTIME)
  17. #include "asio/detail/scheduler_operation.hpp"
  18. #include "asio/execution_context.hpp"
  19. #include "asio/detail/push_options.hpp"
  20. namespace asio {
  21. namespace detail {
  22. class null_reactor
  23. : public execution_context_service_base<null_reactor>
  24. {
  25. public:
  26. // Constructor.
  27. null_reactor(asio::execution_context& ctx)
  28. : execution_context_service_base<null_reactor>(ctx)
  29. {
  30. }
  31. // Destructor.
  32. ~null_reactor()
  33. {
  34. }
  35. // Destroy all user-defined handler objects owned by the service.
  36. void shutdown()
  37. {
  38. }
  39. // No-op because should never be called.
  40. void run(long /*usec*/, op_queue<scheduler_operation>& /*ops*/)
  41. {
  42. }
  43. // No-op.
  44. void interrupt()
  45. {
  46. }
  47. };
  48. } // namespace detail
  49. } // namespace asio
  50. #include "asio/detail/pop_options.hpp"
  51. #endif // defined(ASIO_HAS_IOCP) || defined(ASIO_WINDOWS_RUNTIME)
  52. #endif // ASIO_DETAIL_NULL_REACTOR_HPP