155 lines
4.4 KiB
C++
155 lines
4.4 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#ifndef HAVE_IRCD_ASIO_H
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#define HAVE_IRCD_ASIO_H
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///
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/// Boost library
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///
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/// It is better to add a boost header which we have omitted here rather than
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/// in your definition file, and then #include <ircd/asio.h>. This is because
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/// we can compose a precompiled header for your definition file much easier
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/// this way.
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///
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// ircd.h is included here so that it can be compiled into this header. Then
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// this becomes the single leading precompiled header.
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#include <ircd/ircd.h>
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// Boost preambles
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#define BOOST_COROUTINES_NO_DEPRECATION_WARNING
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#include <boost/version.hpp>
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#include <boost/config.hpp>
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// Workarounds / fixes
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#if BOOST_VERSION >= 107000
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namespace boost
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{
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using std::begin;
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using std::end;
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}
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#endif
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#include <RB_INC_SIGNAL_H
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#include <RB_INC_SYS_MMAN_H
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#include <RB_INC_SYS_EVENT_H
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#include <RB_INC_SYS_EPOLL_H
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#include <RB_INC_SYS_TIMERFD_H
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#include <RB_INC_SYS_EVENTFD_H
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#include <RB_INC_LIBURING_H
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#pragma GCC visibility push(internal)
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#include <boost/throw_exception.hpp>
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#pragma GCC visibility pop
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#include <boost/system/system_error.hpp>
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#include <boost/date_time/posix_time/ptime.hpp>
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// In boost 1.78+ io_uring(7) becomes the core event loop replacing epoll(7)
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// and used for network operations.
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#if defined(HAVE_LIBURING_H) \
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&& IRCD_USE_URING == 1 \
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&& BOOST_VERSION >= 107800
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#define BOOST_ASIO_HAS_IO_URING
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#define BOOST_ASIO_DISABLE_EPOLL
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#define IRCD_USE_ASIO_IO_URING 1
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#else
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#define IRCD_USE_ASIO_IO_URING 0
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#endif
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// In boost 1.79+ asio implements some filesystem operations we can use. While
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// these are available in 1.78 they were buggy for our purposes until 1.79.
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#if BOOST_VERSION >= 107900
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#define IRCD_USE_ASIO_READ 1
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#define IRCD_USE_ASIO_WRITE 1
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#else
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#define IRCD_USE_ASIO_READ 0
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#define IRCD_USE_ASIO_WRITE 0
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#endif
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#include <boost/asio/detail/config.hpp>
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#include <boost/asio/detail/socket_types.hpp>
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#include <boost/asio/ssl/detail/openssl_types.hpp>
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#include <boost/coroutine/coroutine.hpp>
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#if defined(BOOST_ASIO_HAS_EPOLL) \
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|| defined(BOOST_ASIO_HAS_KQUEUE) \
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|| defined(BOOST_ASIO_HAS_IO_URING)
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#pragma GCC visibility push(protected)
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#else
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#pragma GCC visibility push(default)
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#endif
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#include <boost/asio.hpp>
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#include <boost/asio/io_service.hpp>
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#include <boost/asio/steady_timer.hpp>
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#include <boost/asio/spawn.hpp>
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#include <boost/asio/ssl.hpp>
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#pragma GCC visibility pop
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// Template-specializations for some functions we may redefine (interpose).
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// Declarations are needed for template instantiation in PCH and with LTO.
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#if defined(BOOST_ASIO_HAS_EPOLL)
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namespace boost::asio::detail
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{
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using epoll_time_traits = asio::time_traits<posix_time::ptime>;
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template<> std::size_t
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epoll_reactor::cancel_timer(timer_queue<epoll_time_traits> &,
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typename timer_queue<epoll_time_traits>::per_timer_data &,
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std::size_t max);
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}
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#endif
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// Boost version dependent behavior for getting the io_service/io_context
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// abstract executor (recent versions) or the derived instance (old versions).
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namespace ircd::ios
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{
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extern asio::executor user, main;
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extern std::optional<asio::io_context::strand> primary;
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#if BOOST_VERSION >= 107000 && BOOST_VERSION < 107400
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asio::executor &get() noexcept;
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#else
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asio::io_context &get() noexcept;
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#endif
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}
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// The following IRCd headers are not included in the main stdinc.h list of
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// includes because they require boost directly or symbols which we cannot
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// forward declare. You should include this in your definition file if you
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// need these low-level interfaces.
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// Context system headers depending on boost.
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#include <ircd/ctx/continuation.h>
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// Network system headers depending on boost.
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#include <ircd/net/asio.h>
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#if BOOST_VERSION >= 107000 && BOOST_VERSION < 107400
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inline boost::asio::executor &
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ircd::ios::get()
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noexcept
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{
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assert(bool(main));
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return main;
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}
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#else
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inline boost::asio::io_context &
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ircd::ios::get()
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noexcept
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{
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auto &context(mutable_cast(main.context()));
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return static_cast<asio::io_context &>(context);
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}
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#endif
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#endif HAVE_IRCD_ASIO_H
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