From e95946831f8ef53d29590735a2df661385edb008 Mon Sep 17 00:00:00 2001 From: "Matthias P. Braendli" Date: Mon, 6 Aug 2018 10:35:22 +0200 Subject: Replace boost by the standalone asio library --- lib/asio/detail/service_registry.hpp | 164 +++++++++++++++++++++++++++++++++++ 1 file changed, 164 insertions(+) create mode 100644 lib/asio/detail/service_registry.hpp (limited to 'lib/asio/detail/service_registry.hpp') diff --git a/lib/asio/detail/service_registry.hpp b/lib/asio/detail/service_registry.hpp new file mode 100644 index 0000000..cda6307 --- /dev/null +++ b/lib/asio/detail/service_registry.hpp @@ -0,0 +1,164 @@ +// +// detail/service_registry.hpp +// ~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2018 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_DETAIL_SERVICE_REGISTRY_HPP +#define ASIO_DETAIL_SERVICE_REGISTRY_HPP + +#if defined(_MSC_VER) && (_MSC_VER >= 1200) +# pragma once +#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) + +#include "asio/detail/config.hpp" +#include +#include "asio/detail/mutex.hpp" +#include "asio/detail/noncopyable.hpp" +#include "asio/detail/type_traits.hpp" +#include "asio/execution_context.hpp" + +#include "asio/detail/push_options.hpp" + +namespace asio { + +class io_context; + +namespace detail { + +template +class typeid_wrapper {}; + +class service_registry + : private noncopyable +{ +public: + // Constructor. + ASIO_DECL service_registry(execution_context& owner); + + // Destructor. + ASIO_DECL ~service_registry(); + + // Shutdown all services. + ASIO_DECL void shutdown_services(); + + // Destroy all services. + ASIO_DECL void destroy_services(); + + // Notify all services of a fork event. + ASIO_DECL void notify_fork(execution_context::fork_event fork_ev); + + // Get the service object corresponding to the specified service type. Will + // create a new service object automatically if no such object already + // exists. Ownership of the service object is not transferred to the caller. + template + Service& use_service(); + + // Get the service object corresponding to the specified service type. Will + // create a new service object automatically if no such object already + // exists. Ownership of the service object is not transferred to the caller. + // This overload is used for backwards compatibility with services that + // inherit from io_context::service. + template + Service& use_service(io_context& owner); + + // Add a service object. Throws on error, in which case ownership of the + // object is retained by the caller. + template + void add_service(Service* new_service); + + // Check whether a service object of the specified type already exists. + template + bool has_service() const; + +private: + // Initalise a service's key when the key_type typedef is not available. + template + static void init_key(execution_context::service::key& key, ...); + +#if !defined(ASIO_NO_TYPEID) + // Initalise a service's key when the key_type typedef is available. + template + static void init_key(execution_context::service::key& key, + typename enable_if< + is_base_of::value>::type*); +#endif // !defined(ASIO_NO_TYPEID) + + // Initialise a service's key based on its id. + ASIO_DECL static void init_key_from_id( + execution_context::service::key& key, + const execution_context::id& id); + +#if !defined(ASIO_NO_TYPEID) + // Initialise a service's key based on its id. + template + static void init_key_from_id(execution_context::service::key& key, + const service_id& /*id*/); +#endif // !defined(ASIO_NO_TYPEID) + + // Check if a service matches the given id. + ASIO_DECL static bool keys_match( + const execution_context::service::key& key1, + const execution_context::service::key& key2); + + // The type of a factory function used for creating a service instance. + typedef execution_context::service*(*factory_type)(void*); + + // Factory function for creating a service instance. + template + static execution_context::service* create(void* owner); + + // Destroy a service instance. + ASIO_DECL static void destroy(execution_context::service* service); + + // Helper class to manage service pointers. + struct auto_service_ptr; + friend struct auto_service_ptr; + struct auto_service_ptr + { + execution_context::service* ptr_; + ~auto_service_ptr() { destroy(ptr_); } + }; + + // Get the service object corresponding to the specified service key. Will + // create a new service object automatically if no such object already + // exists. Ownership of the service object is not transferred to the caller. + ASIO_DECL execution_context::service* do_use_service( + const execution_context::service::key& key, + factory_type factory, void* owner); + + // Add a service object. Throws on error, in which case ownership of the + // object is retained by the caller. + ASIO_DECL void do_add_service( + const execution_context::service::key& key, + execution_context::service* new_service); + + // Check whether a service object with the specified key already exists. + ASIO_DECL bool do_has_service( + const execution_context::service::key& key) const; + + // Mutex to protect access to internal data. + mutable asio::detail::mutex mutex_; + + // The owner of this service registry and the services it contains. + execution_context& owner_; + + // The first service in the list of contained services. + execution_context::service* first_service_; +}; + +} // namespace detail +} // namespace asio + +#include "asio/detail/pop_options.hpp" + +#include "asio/detail/impl/service_registry.hpp" +#if defined(ASIO_HEADER_ONLY) +# include "asio/detail/impl/service_registry.ipp" +#endif // defined(ASIO_HEADER_ONLY) + +#endif // ASIO_DETAIL_SERVICE_REGISTRY_HPP -- cgit v1.2.3