ceph/src/boost/boost/asio/impl/execution_context.hpp

   1 //
   2 // impl/execution_context.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
  11 #ifndef BOOST_ASIO_IMPL_EXECUTION_CONTEXT_HPP
  12 #define BOOST_ASIO_IMPL_EXECUTION_CONTEXT_HPP
  13
  14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  15 # pragma once
  16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  17
  18 #include <boost/asio/detail/handler_type_requirements.hpp>
  19 #include <boost/asio/detail/scoped_ptr.hpp>
  20 #include <boost/asio/detail/service_registry.hpp>
  21
  22 #include <boost/asio/detail/push_options.hpp>
  23
  24 namespace boost {
  25 namespace asio {
  26
  27 #if !defined(GENERATING_DOCUMENTATION)
  28
  29 template <typename Service>
  30 inline Service& use_service(execution_context& e)
  31 {
  32   // Check that Service meets the necessary type requirements.
  33   (void)static_cast<execution_context::service*>(static_cast<Service*>(0));
  34
  35   return e.service_registry_->template use_service<Service>();
  36 }
  37
  38 #if defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES)
  39
  40 template <typename Service, typename... Args>
  41 Service& make_service(execution_context& e, BOOST_ASIO_MOVE_ARG(Args)... args)
  42 {
  43   detail::scoped_ptr<Service> svc(
  44       new Service(e, BOOST_ASIO_MOVE_CAST(Args)(args)...));
  45   e.service_registry_->template add_service<Service>(svc.get());
  46   Service& result = *svc;
  47   svc.release();
  48   return result;
  49 }
  50
  51 #else // defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES)
  52
  53 template <typename Service>
  54 Service& make_service(execution_context& e)
  55 {
  56   detail::scoped_ptr<Service> svc(new Service(e));
  57   e.service_registry_->template add_service<Service>(svc.get());
  58   Service& result = *svc;
  59   svc.release();
  60   return result;
  61 }
  62
  63 #define BOOST_ASIO_PRIVATE_MAKE_SERVICE_DEF(n) \
  64   template <typename Service, BOOST_ASIO_VARIADIC_TPARAMS(n)> \
  65   Service& make_service(execution_context& e, \
  66       BOOST_ASIO_VARIADIC_MOVE_PARAMS(n)) \
  67   { \
  68     detail::scoped_ptr<Service> svc( \
  69         new Service(e, BOOST_ASIO_VARIADIC_MOVE_ARGS(n))); \
  70     e.service_registry_->template add_service<Service>(svc.get()); \
  71     Service& result = *svc; \
  72     svc.release(); \
  73     return result; \
  74   } \
  75   /**/
  76   BOOST_ASIO_VARIADIC_GENERATE(BOOST_ASIO_PRIVATE_MAKE_SERVICE_DEF)
  77 #undef BOOST_ASIO_PRIVATE_MAKE_SERVICE_DEF
  78
  79 #endif // defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES)
  80
  81 template <typename Service>
  82 inline void add_service(execution_context& e, Service* svc)
  83 {
  84   // Check that Service meets the necessary type requirements.
  85   (void)static_cast<execution_context::service*>(static_cast<Service*>(0));
  86
  87   e.service_registry_->template add_service<Service>(svc);
  88 }
  89
  90 template <typename Service>
  91 inline bool has_service(execution_context& e)
  92 {
  93   // Check that Service meets the necessary type requirements.
  94   (void)static_cast<execution_context::service*>(static_cast<Service*>(0));
  95
  96   return e.service_registry_->template has_service<Service>();
  97 }
  98
  99 #endif // !defined(GENERATING_DOCUMENTATION)
 100
 101 inline execution_context& execution_context::service::context()
 102 {
 103   return owner_;
 104 }
 105
 106 } // namespace asio
 107 } // namespace boost
 108
 109 #include <boost/asio/detail/pop_options.hpp>
 110
 111 #endif // BOOST_ASIO_IMPL_EXECUTION_CONTEXT_HPP