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//
// io_context_pool.hpp
// ~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2020 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 HTTP_SERVER2_IO_SERVICE_POOL_HPP
#define HTTP_SERVER2_IO_SERVICE_POOL_HPP
#include <boost/asio.hpp>
#include <list>
#include <vector>
#include <boost/noncopyable.hpp>
#include <boost/shared_ptr.hpp>
namespace http {
namespace server2 {
/// A pool of io_context objects.
class io_context_pool
: private boost::noncopyable
{
public:
/// Construct the io_context pool.
explicit io_context_pool(std::size_t pool_size);
/// Run all io_context objects in the pool.
void run();
/// Stop all io_context objects in the pool.
void stop();
/// Get an io_context to use.
boost::asio::io_context& get_io_context();
private:
typedef boost::shared_ptr<boost::asio::io_context> io_context_ptr;
/// The pool of io_contexts.
std::vector<io_context_ptr> io_contexts_;
/// The work-tracking executors that keep the io_contexts running.
std::list<boost::asio::any_io_executor> work_;
/// The next io_context to use for a connection.
std::size_t next_io_context_;
};
} // namespace server2
} // namespace http
#endif // HTTP_SERVER2_IO_SERVICE_POOL_HPP
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