1 files changed, 78 insertions, 0 deletions
diff --git a/lib/asio/system_context.hpp b/lib/asio/system_context.hpp
new file mode 100644
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+++ b/lib/asio/system_context.hpp
@@ -0,0 +1,78 @@
+//
+// system_context.hpp
+// ~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2018 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;
+
+  // 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