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//
// system_context.hpp
// ~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2017 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 ASIO_SYSTEM_CONTEXT_HPP
#define ASIO_SYSTEM_CONTEXT_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/detail/scheduler.hpp"
#include "asio/detail/thread_group.hpp"
#include "asio/execution_context.hpp"
#include "asio/system_executor.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
/// The executor context for the system executor.
class system_context : public execution_context
{
public:
/// The executor type associated with the context.
typedef system_executor executor_type;
/// Destructor shuts down all threads in the system thread pool.
ASIO_DECL ~system_context();
/// Obtain an executor for the context.
executor_type get_executor() ASIO_NOEXCEPT
{
return system_executor();
}
/// Signal all threads in the system thread pool to stop.
ASIO_DECL void stop();
/// Determine whether the system thread pool has been stopped.
ASIO_DECL bool stopped() const ASIO_NOEXCEPT;
/// Join all threads in the system thread pool.
ASIO_DECL void join();
#if defined(GENERATING_DOCUMENTATION)
private:
#endif // defined(GENERATING_DOCUMENTATION)
// Constructor creates all threads in the system thread pool.
ASIO_DECL system_context();
private:
friend class system_executor;
struct thread_function;
// The underlying scheduler.
detail::scheduler& scheduler_;
// The threads in the system thread pool.
detail::thread_group threads_;
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#if defined(ASIO_HEADER_ONLY)
# include "asio/impl/system_context.ipp"
#endif // defined(ASIO_HEADER_ONLY)
#endif // ASIO_SYSTEM_CONTEXT_HPP
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