text: //
  // impl/execution_context.ipp
  // ~~~~~~~~~~~~~~~~~~~~~~~~~~
  //
  // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
  //
  // Distributed under the Boost Software License, Version 1.0. (See accompanying
  // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  //
  
  #ifndef ASIO_IMPL_EXECUTION_CONTEXT_IPP
  #define ASIO_IMPL_EXECUTION_CONTEXT_IPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  
  #include "asio/detail/config.hpp"
  #include "asio/execution_context.hpp"
  #include "asio/detail/service_registry.hpp"
  
  #include "asio/detail/push_options.hpp"
  
  namespace asio {
  
  execution_context::execution_context()
    : service_registry_(new asio::detail::service_registry(*this))
  {
  }
  
  execution_context::~execution_context()
  {
    shutdown();
    destroy();
    delete service_registry_;
  }
  
  void execution_context::shutdown()
  {
    service_registry_->shutdown_services();
  }
  
  void execution_context::destroy()
  {
    service_registry_->destroy_services();
  }
  
  void execution_context::notify_fork(
      asio::execution_context::fork_event event)
  {
    service_registry_->notify_fork(event);
  }
  
  execution_context::service::service(execution_context& owner)
    : owner_(owner),
      next_(0)
  {
  }
  
  execution_context::service::~service()
  {
  }
  
  void execution_context::service::notify_fork(execution_context::fork_event)
  {
  }
  
  service_already_exists::service_already_exists()
    : std::logic_error("Service already exists.")
  {
  }
  
  invalid_service_owner::invalid_service_owner()
    : std::logic_error("Invalid service owner.")
  {
  }
  
  } // namespace asio
  
  #include "asio/detail/pop_options.hpp"
  
  #endif // ASIO_IMPL_EXECUTION_CONTEXT_IPP
  