| // |
| // detail/handler_tracking.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2015 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 BOOST_ASIO_DETAIL_HANDLER_TRACKING_HPP |
| #define BOOST_ASIO_DETAIL_HANDLER_TRACKING_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include <boost/asio/detail/config.hpp> |
| |
| #if defined(BOOST_ASIO_ENABLE_HANDLER_TRACKING) |
| # include <boost/system/error_code.hpp> |
| # include <boost/asio/detail/cstdint.hpp> |
| # include <boost/asio/detail/static_mutex.hpp> |
| # include <boost/asio/detail/tss_ptr.hpp> |
| #endif // defined(BOOST_ASIO_ENABLE_HANDLER_TRACKING) |
| |
| #include <boost/asio/detail/push_options.hpp> |
| |
| namespace boost { |
| namespace asio { |
| namespace detail { |
| |
| #if defined(BOOST_ASIO_ENABLE_HANDLER_TRACKING) |
| |
| class handler_tracking |
| { |
| public: |
| class completion; |
| |
| // Base class for objects containing tracked handlers. |
| class tracked_handler |
| { |
| private: |
| // Only the handler_tracking class will have access to the id. |
| friend class handler_tracking; |
| friend class completion; |
| uint64_t id_; |
| |
| protected: |
| // Constructor initialises with no id. |
| tracked_handler() : id_(0) {} |
| |
| // Prevent deletion through this type. |
| ~tracked_handler() {} |
| }; |
| |
| // Initialise the tracking system. |
| BOOST_ASIO_DECL static void init(); |
| |
| // Record the creation of a tracked handler. |
| BOOST_ASIO_DECL static void creation(tracked_handler* h, |
| const char* object_type, void* object, const char* op_name); |
| |
| class completion |
| { |
| public: |
| // Constructor records that handler is to be invoked with no arguments. |
| BOOST_ASIO_DECL explicit completion(tracked_handler* h); |
| |
| // Destructor records only when an exception is thrown from the handler, or |
| // if the memory is being freed without the handler having been invoked. |
| BOOST_ASIO_DECL ~completion(); |
| |
| // Records that handler is to be invoked with no arguments. |
| BOOST_ASIO_DECL void invocation_begin(); |
| |
| // Records that handler is to be invoked with one arguments. |
| BOOST_ASIO_DECL void invocation_begin(const boost::system::error_code& ec); |
| |
| // Constructor records that handler is to be invoked with two arguments. |
| BOOST_ASIO_DECL void invocation_begin( |
| const boost::system::error_code& ec, std::size_t bytes_transferred); |
| |
| // Constructor records that handler is to be invoked with two arguments. |
| BOOST_ASIO_DECL void invocation_begin( |
| const boost::system::error_code& ec, int signal_number); |
| |
| // Constructor records that handler is to be invoked with two arguments. |
| BOOST_ASIO_DECL void invocation_begin( |
| const boost::system::error_code& ec, const char* arg); |
| |
| // Record that handler invocation has ended. |
| BOOST_ASIO_DECL void invocation_end(); |
| |
| private: |
| friend class handler_tracking; |
| uint64_t id_; |
| bool invoked_; |
| completion* next_; |
| }; |
| |
| // Record an operation that affects pending handlers. |
| BOOST_ASIO_DECL static void operation(const char* object_type, |
| void* object, const char* op_name); |
| |
| // Write a line of output. |
| BOOST_ASIO_DECL static void write_line(const char* format, ...); |
| |
| private: |
| struct tracking_state; |
| BOOST_ASIO_DECL static tracking_state* get_state(); |
| }; |
| |
| # define BOOST_ASIO_INHERIT_TRACKED_HANDLER \ |
| : public boost::asio::detail::handler_tracking::tracked_handler |
| |
| # define BOOST_ASIO_ALSO_INHERIT_TRACKED_HANDLER \ |
| , public boost::asio::detail::handler_tracking::tracked_handler |
| |
| # define BOOST_ASIO_HANDLER_TRACKING_INIT \ |
| boost::asio::detail::handler_tracking::init() |
| |
| # define BOOST_ASIO_HANDLER_CREATION(args) \ |
| boost::asio::detail::handler_tracking::creation args |
| |
| # define BOOST_ASIO_HANDLER_COMPLETION(args) \ |
| boost::asio::detail::handler_tracking::completion tracked_completion args |
| |
| # define BOOST_ASIO_HANDLER_INVOCATION_BEGIN(args) \ |
| tracked_completion.invocation_begin args |
| |
| # define BOOST_ASIO_HANDLER_INVOCATION_END \ |
| tracked_completion.invocation_end() |
| |
| # define BOOST_ASIO_HANDLER_OPERATION(args) \ |
| boost::asio::detail::handler_tracking::operation args |
| |
| #else // defined(BOOST_ASIO_ENABLE_HANDLER_TRACKING) |
| |
| # define BOOST_ASIO_INHERIT_TRACKED_HANDLER |
| # define BOOST_ASIO_ALSO_INHERIT_TRACKED_HANDLER |
| # define BOOST_ASIO_HANDLER_TRACKING_INIT (void)0 |
| # define BOOST_ASIO_HANDLER_CREATION(args) (void)0 |
| # define BOOST_ASIO_HANDLER_COMPLETION(args) (void)0 |
| # define BOOST_ASIO_HANDLER_INVOCATION_BEGIN(args) (void)0 |
| # define BOOST_ASIO_HANDLER_INVOCATION_END (void)0 |
| # define BOOST_ASIO_HANDLER_OPERATION(args) (void)0 |
| |
| #endif // defined(BOOST_ASIO_ENABLE_HANDLER_TRACKING) |
| |
| } // namespace detail |
| } // namespace asio |
| } // namespace boost |
| |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #if defined(BOOST_ASIO_HEADER_ONLY) |
| # include <boost/asio/detail/impl/handler_tracking.ipp> |
| #endif // defined(BOOST_ASIO_HEADER_ONLY) |
| |
| #endif // BOOST_ASIO_DETAIL_HANDLER_TRACKING_HPP |