147 lines
4.4 KiB
C++
147 lines
4.4 KiB
C++
//
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// detail/handler_tracking.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_DETAIL_HANDLER_TRACKING_HPP
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#define ASIO_DETAIL_HANDLER_TRACKING_HPP
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#include "asio/detail/config.hpp"
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#if defined(ASIO_ENABLE_HANDLER_TRACKING)
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# include "asio/error_code.hpp"
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# include "asio/detail/cstdint.hpp"
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# include "asio/detail/static_mutex.hpp"
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# include "asio/detail/tss_ptr.hpp"
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#endif // defined(ASIO_ENABLE_HANDLER_TRACKING)
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#include "asio/detail/push_options.hpp"
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namespace asio {
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namespace detail {
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#if defined(ASIO_ENABLE_HANDLER_TRACKING)
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class handler_tracking
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{
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public:
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class completion;
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// Base class for objects containing tracked handlers.
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class tracked_handler
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{
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private:
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// Only the handler_tracking class will have access to the id.
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friend class handler_tracking;
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friend class completion;
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uint64_t id_;
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protected:
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// Constructor initialises with no id.
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tracked_handler() : id_(0) {}
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// Prevent deletion through this type.
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~tracked_handler() {}
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};
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// Initialise the tracking system.
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ASIO_DECL static void init();
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// Record the creation of a tracked handler.
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ASIO_DECL static void creation(tracked_handler* h,
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const char* object_type, void* object, const char* op_name);
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class completion
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{
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public:
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// Constructor records that handler is to be invoked with no arguments.
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ASIO_DECL explicit completion(tracked_handler* h);
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// Destructor records only when an exception is thrown from the handler, or
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// if the memory is being freed without the handler having been invoked.
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ASIO_DECL ~completion();
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// Records that handler is to be invoked with no arguments.
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ASIO_DECL void invocation_begin();
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// Records that handler is to be invoked with one arguments.
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ASIO_DECL void invocation_begin(const asio::error_code& ec);
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// Constructor records that handler is to be invoked with two arguments.
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ASIO_DECL void invocation_begin(
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const asio::error_code& ec, std::size_t bytes_transferred);
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// Constructor records that handler is to be invoked with two arguments.
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ASIO_DECL void invocation_begin(
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const asio::error_code& ec, int signal_number);
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// Constructor records that handler is to be invoked with two arguments.
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ASIO_DECL void invocation_begin(
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const asio::error_code& ec, const char* arg);
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// Record that handler invocation has ended.
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ASIO_DECL void invocation_end();
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private:
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friend class handler_tracking;
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uint64_t id_;
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bool invoked_;
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completion* next_;
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};
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// Record an operation that affects pending handlers.
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ASIO_DECL static void operation(const char* object_type,
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void* object, const char* op_name);
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// Write a line of output.
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ASIO_DECL static void write_line(const char* format, ...);
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private:
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struct tracking_state;
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ASIO_DECL static tracking_state* get_state();
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};
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# define ASIO_INHERIT_TRACKED_HANDLER : public asio::detail::handler_tracking::tracked_handler
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# define ASIO_ALSO_INHERIT_TRACKED_HANDLER , public asio::detail::handler_tracking::tracked_handler
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# define ASIO_HANDLER_TRACKING_INIT asio::detail::handler_tracking::init()
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# define ASIO_HANDLER_CREATION(args) asio::detail::handler_tracking::creation args
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# define ASIO_HANDLER_COMPLETION(args) asio::detail::handler_tracking::completion tracked_completion args
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# define ASIO_HANDLER_INVOCATION_BEGIN(args) tracked_completion.invocation_begin args
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# define ASIO_HANDLER_INVOCATION_END tracked_completion.invocation_end()
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# define ASIO_HANDLER_OPERATION(args) asio::detail::handler_tracking::operation args
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#else // defined(ASIO_ENABLE_HANDLER_TRACKING)
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# define ASIO_INHERIT_TRACKED_HANDLER
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# define ASIO_ALSO_INHERIT_TRACKED_HANDLER
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# define ASIO_HANDLER_TRACKING_INIT (void)0
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# define ASIO_HANDLER_CREATION(args) (void)0
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# define ASIO_HANDLER_COMPLETION(args) (void)0
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# define ASIO_HANDLER_INVOCATION_BEGIN(args) (void)0
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# define ASIO_HANDLER_INVOCATION_END (void)0
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# define ASIO_HANDLER_OPERATION(args) (void)0
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#endif // defined(ASIO_ENABLE_HANDLER_TRACKING)
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} // namespace detail
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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# include "asio/detail/impl/handler_tracking.ipp"
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#endif // ASIO_DETAIL_HANDLER_TRACKING_HPP
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