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//
// detail/handler_tracking.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2014 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
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Swift