include/boost/corosio/native/detail/reactor/reactor_acceptor_service.hpp

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reactor_acceptor_service.hpp

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1		//
2		// Copyright (c) 2026 Michael Vandeberg
3		//
4		// Distributed under the Boost Software License, Version 1.0. (See accompanying
5		// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6		//
7		// Official repository: https://github.com/cppalliance/corosio
8		//
9
10		#ifndef BOOST_COROSIO_NATIVE_DETAIL_REACTOR_REACTOR_ACCEPTOR_SERVICE_HPP
11		#define BOOST_COROSIO_NATIVE_DETAIL_REACTOR_REACTOR_ACCEPTOR_SERVICE_HPP
12
13		#include <boost/corosio/io/io_object.hpp>
14		#include <boost/corosio/detail/scheduler_op.hpp>
15		#include <boost/corosio/native/detail/reactor/reactor_service_state.hpp>
16		#include <boost/capy/ex/execution_context.hpp>
17
18		#include <memory>
19		#include <mutex>
20
21		namespace boost::corosio::detail {
22
23		/* CRTP base for reactor-backed acceptor service implementations.
24
25		Provides the shared construct/destroy/shutdown/close/post/work
26		logic that is identical across all reactor backends and acceptor
27		types (TCP and local stream). Derived classes add only
28		protocol-specific open/bind/listen/stream_service.
29
30		@tparam Derived The concrete service type (CRTP).
31		@tparam ServiceBase The abstract service base
32		(tcp_acceptor_service or
33		local_stream_acceptor_service).
34		@tparam Scheduler The backend's scheduler type.
35		@tparam Impl The backend's acceptor impl type.
36		@tparam StreamService The concrete stream service type returned
37		by stream_service().
38		*/
39		template<
40		class Derived,
41		class ServiceBase,
42		class Scheduler,
43		class Impl,
44		class StreamService>
45		class reactor_acceptor_service : public ServiceBase
46		{
47		friend Derived;
48		using state_type = reactor_service_state<Scheduler, Impl>;
49
50		protected:
51		// NOLINTNEXTLINE(bugprone-crtp-constructor-accessibility)
52	2464x	explicit reactor_acceptor_service(capy::execution_context& ctx)
53	2464x	: ctx_(ctx)
54	2464x	, state_(
55		std::make_unique<state_type>(
56	2464x	ctx.template use_service<Scheduler>()))
57		{
58	2464x	}
59
60		public:
61	2464x	~reactor_acceptor_service() override = default;
62
63	2464x	void shutdown() override
64		{
65	2464x	std::lock_guard lock(state_->mutex_);
66
67	2464x	while (auto* impl = state_->impl_list_.pop_front())
68	✗	impl->close_socket();
69	2464x	}
70
71	338x	io_object::implementation* construct() override
72		{
73	338x	auto impl = std::make_shared<Impl>(static_cast<Derived&>(*this));
74	338x	auto* raw = impl.get();
75
76	338x	std::lock_guard lock(state_->mutex_);
77	338x	state_->impl_ptrs_.emplace(raw, std::move(impl));
78	338x	state_->impl_list_.push_back(raw);
79
80	338x	return raw;
81	338x	}
82
83	338x	void destroy(io_object::implementation* impl) override
84		{
85	338x	auto* typed = static_cast<Impl*>(impl);
86	338x	typed->close_socket();
87	338x	std::lock_guard lock(state_->mutex_);
88	338x	state_->impl_list_.remove(typed);
89	338x	state_->impl_ptrs_.erase(typed);
90	338x	}
91
92	650x	void close(io_object::handle& h) override
93		{
94	650x	static_cast<Impl*>(h.get())->close_socket();
95	650x	}
96
97	565x	Scheduler& scheduler() const noexcept
98		{
99	565x	return state_->sched_;
100		}
101
102	62x	void post(scheduler_op* op)
103		{
104	62x	state_->sched_.post(op);
105	62x	}
106
107	8182x	void work_started() noexcept
108		{
109	8182x	state_->sched_.work_started();
110	8182x	}
111
112	44x	void work_finished() noexcept
113		{
114	44x	state_->sched_.work_finished();
115	44x	}
116
117	8147x	StreamService* stream_service() const noexcept
118		{
119	8147x	return stream_svc_;
120		}
121
122		protected:
123		capy::execution_context& ctx_;
124		std::unique_ptr<state_type> state_;
125		StreamService* stream_svc_ = nullptr;
126
127		private:
128		reactor_acceptor_service(reactor_acceptor_service const&) = delete;
129		reactor_acceptor_service& operator=(reactor_acceptor_service const&) = delete;
130		};
131
132		} // namespace boost::corosio::detail
133
134		#endif // BOOST_COROSIO_NATIVE_DETAIL_REACTOR_REACTOR_ACCEPTOR_SERVICE_HPP
135