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- //
- // system_context.hpp
- // ~~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2019 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/detail/push_options.hpp"
-
- namespace asio {
-
- class system_executor;
-
- /// 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;
-
- /// 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;
-
- // Helper function to create the underlying scheduler.
- ASIO_DECL detail::scheduler& add_scheduler(detail::scheduler* s);
-
- // 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"
-
- #include "asio/impl/system_context.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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