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construct/include/ircd/asio.h

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// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
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#ifndef HAVE_IRCD_ASIO_H
#define HAVE_IRCD_ASIO_H
///
/// Boost library
///
/// It is better to add a boost header which we have omitted here rather than
/// in your definition file, and then #include <ircd/asio.h>. This is because
/// we can compose a precompiled header for your definition file much easier
/// this way.
///
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// ircd.h is included here so that it can be compiled into this header. Then
// this becomes the single leading precompiled header.
#include <ircd/ircd.h>
#define BOOST_COROUTINES_NO_DEPRECATION_WARNING
#pragma GCC visibility push(default)
// Boost preambles
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#include <boost/version.hpp>
#include <boost/config.hpp>
// Workarounds / fixes
#if BOOST_VERSION >= 107000
namespace boost
{
using std::begin;
using std::end;
}
#endif
// Needed for consistent interop with std::system_error
#include <boost/system/system_error.hpp>
// Boost ASIO stack
#include <boost/asio.hpp>
#include <boost/asio/ssl.hpp>
#include <boost/asio/steady_timer.hpp>
#include <boost/asio/spawn.hpp>
#include <boost/asio/io_service.hpp>
#pragma GCC visibility pop
// Boost version dependent behavior for getting the io_service/io_context
// abstract executor (recent versions) or the derived instance (old versions).
namespace ircd::ios
{
#if BOOST_VERSION >= 107000
asio::executor &get() noexcept;
#else
asio::io_context &get() noexcept;
#endif
}
// The following IRCd headers are not included in the main stdinc.h list of
// includes because they require boost directly or symbols which we cannot
// forward declare. You should include this in your definition file if you
// need these low-level interfaces.
// Context system headers depending on boost.
#include <ircd/ctx/continuation.h>
// Network system headers depending on boost.
#include <ircd/net/asio.h>
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#if BOOST_VERSION >= 107000
inline boost::asio::executor &
ircd::ios::get()
noexcept
{
assert(bool(main));
return main;
}
#else
inline boost::asio::io_context &
ircd::ios::get()
noexcept
{
auto &context(const_cast<asio::execution_context &>(main.context()));
return static_cast<asio::io_context &>(context);
}
#endif
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#endif HAVE_IRCD_ASIO_H