service_registry.hpp 2.2 KB

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  1. //
  2. // detail/impl/service_registry.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_IMPL_SERVICE_REGISTRY_HPP
  11. #define ASIO_DETAIL_IMPL_SERVICE_REGISTRY_HPP
  12. #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  13. # pragma once
  14. #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  15. #include "asio/detail/push_options.hpp"
  16. namespace asio {
  17. namespace detail {
  18. template <typename Service, typename Arg>
  19. service_registry::service_registry(
  20. asio::io_service& o, Service*, Arg arg)
  21. : owner_(o),
  22. first_service_(new Service(o, arg))
  23. {
  24. asio::io_service::service::key key;
  25. init_key(key, Service::id);
  26. first_service_->key_ = key;
  27. first_service_->next_ = 0;
  28. }
  29. template <typename Service>
  30. Service& service_registry::first_service()
  31. {
  32. return *static_cast<Service*>(first_service_);
  33. }
  34. template <typename Service>
  35. Service& service_registry::use_service()
  36. {
  37. asio::io_service::service::key key;
  38. init_key(key, Service::id);
  39. factory_type factory = &service_registry::create<Service>;
  40. return *static_cast<Service*>(do_use_service(key, factory));
  41. }
  42. template <typename Service>
  43. void service_registry::add_service(Service* new_service)
  44. {
  45. asio::io_service::service::key key;
  46. init_key(key, Service::id);
  47. return do_add_service(key, new_service);
  48. }
  49. template <typename Service>
  50. bool service_registry::has_service() const
  51. {
  52. asio::io_service::service::key key;
  53. init_key(key, Service::id);
  54. return do_has_service(key);
  55. }
  56. #if !defined(ASIO_NO_TYPEID)
  57. template <typename Service>
  58. void service_registry::init_key(asio::io_service::service::key& key,
  59. const asio::detail::service_id<Service>& /*id*/)
  60. {
  61. key.type_info_ = &typeid(typeid_wrapper<Service>);
  62. key.id_ = 0;
  63. }
  64. #endif // !defined(ASIO_NO_TYPEID)
  65. template <typename Service>
  66. asio::io_service::service* service_registry::create(
  67. asio::io_service& owner)
  68. {
  69. return new Service(owner);
  70. }
  71. } // namespace detail
  72. } // namespace asio
  73. #include "asio/detail/pop_options.hpp"
  74. #endif // ASIO_DETAIL_IMPL_SERVICE_REGISTRY_HPP