💿🐜 Antkeeper source code
https://antkeeper.com
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95 lines
2.1 KiB
95 lines
2.1 KiB
/*
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* Copyright (C) 2023 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_EVENT_PUBLISHER_HPP
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#define ANTKEEPER_EVENT_PUBLISHER_HPP
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#include <algorithm>
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#include <execution>
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#include <engine/event/channel.hpp>
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namespace event {
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/**
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* Publishes messages to subscribers.
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*
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* @tparam T Message type.
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*/
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template <class T>
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class publisher
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{
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public:
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/// Message type.
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typedef T message_type;
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/// Channel type.
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typedef channel<message_type> channel_type;
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/**
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* Publishes a message.
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*
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* @tparam ExecutionPolicy Execution policy type.
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*
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* @param policy Execution policy to use.
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* @param message Message to publish.
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*/
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/// @{
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template <class ExecutionPolicy>
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void publish(ExecutionPolicy&& policy, const message_type& message) const
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{
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std::for_each
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(
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policy,
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std::begin(m_channel.subscribers),
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std::end(m_channel.subscribers),
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[&](const auto& subscriber)
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{
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(*subscriber)(message);
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}
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);
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}
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void publish(const message_type& message) const
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{
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publish(std::execution::seq, message);
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}
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/// @}
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/**
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* Returns the channel through which messages are published.
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*/
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/// @{
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[[nodiscard]] inline const channel_type& channel() const noexcept
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{
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return m_channel;
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}
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[[nodiscard]] inline channel_type& channel() noexcept
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{
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return m_channel;
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}
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/// @}
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private:
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channel_type m_channel;
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};
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} // namespace event
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#endif // ANTKEEPER_EVENT_PUBLISHER_HPP
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