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+//
+// windows/basic_object_handle.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+// Copyright (c) 2011 Boris Schaeling (boris@highscore.de)
+//
+// 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_WINDOWS_BASIC_OBJECT_HANDLE_HPP
+#define ASIO_WINDOWS_BASIC_OBJECT_HANDLE_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+
+#if defined(ASIO_HAS_WINDOWS_OBJECT_HANDLE) \
+ || defined(GENERATING_DOCUMENTATION)
+
+#include "asio/detail/throw_error.hpp"
+#include "asio/error.hpp"
+#include "asio/windows/basic_handle.hpp"
+#include "asio/windows/object_handle_service.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace windows {
+
+/// Provides object-oriented handle functionality.
+/**
+ * The windows::basic_object_handle class template provides asynchronous and
+ * blocking object-oriented handle functionality.
+ *
+ * @par Thread Safety
+ * @e Distinct @e objects: Safe.@n
+ * @e Shared @e objects: Unsafe.
+ */
+template <typename ObjectHandleService = object_handle_service>
+class basic_object_handle
+ : public basic_handle<ObjectHandleService>
+{
+public:
+ /// The native representation of a handle.
+ typedef typename ObjectHandleService::native_handle_type native_handle_type;
+
+ /// Construct a basic_object_handle without opening it.
+ /**
+ * This constructor creates an object handle without opening it.
+ *
+ * @param io_context The io_context object that the object handle will use to
+ * dispatch handlers for any asynchronous operations performed on the handle.
+ */
+ explicit basic_object_handle(asio::io_context& io_context)
+ : basic_handle<ObjectHandleService>(io_context)
+ {
+ }
+
+ /// Construct a basic_object_handle on an existing native handle.
+ /**
+ * This constructor creates an object handle object to hold an existing native
+ * handle.
+ *
+ * @param io_context The io_context object that the object handle will use to
+ * dispatch handlers for any asynchronous operations performed on the handle.
+ *
+ * @param native_handle The new underlying handle implementation.
+ *
+ * @throws asio::system_error Thrown on failure.
+ */
+ basic_object_handle(asio::io_context& io_context,
+ const native_handle_type& native_handle)
+ : basic_handle<ObjectHandleService>(io_context, native_handle)
+ {
+ }
+
+#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
+ /// Move-construct a basic_object_handle from another.
+ /**
+ * This constructor moves an object handle from one object to another.
+ *
+ * @param other The other basic_object_handle object from which the move will
+ * occur.
+ *
+ * @note Following the move, the moved-from object is in the same state as if
+ * constructed using the @c basic_object_handle(io_context&) constructor.
+ */
+ basic_object_handle(basic_object_handle&& other)
+ : basic_handle<ObjectHandleService>(
+ ASIO_MOVE_CAST(basic_object_handle)(other))
+ {
+ }
+
+ /// Move-assign a basic_object_handle from another.
+ /**
+ * This assignment operator moves an object handle from one object to another.
+ *
+ * @param other The other basic_object_handle object from which the move will
+ * occur.
+ *
+ * @note Following the move, the moved-from object is in the same state as if
+ * constructed using the @c basic_object_handle(io_context&) constructor.
+ */
+ basic_object_handle& operator=(basic_object_handle&& other)
+ {
+ basic_handle<ObjectHandleService>::operator=(
+ ASIO_MOVE_CAST(basic_object_handle)(other));
+ return *this;
+ }
+#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
+
+ /// Perform a blocking wait on the object handle.
+ /**
+ * This function is used to wait for the object handle to be set to the
+ * signalled state. This function blocks and does not return until the object
+ * handle has been set to the signalled state.
+ *
+ * @throws asio::system_error Thrown on failure.
+ */
+ void wait()
+ {
+ asio::error_code ec;
+ this->get_service().wait(this->get_implementation(), ec);
+ asio::detail::throw_error(ec, "wait");
+ }
+
+ /// Perform a blocking wait on the object handle.
+ /**
+ * This function is used to wait for the object handle to be set to the
+ * signalled state. This function blocks and does not return until the object
+ * handle has been set to the signalled state.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ */
+ void wait(asio::error_code& ec)
+ {
+ this->get_service().wait(this->get_implementation(), ec);
+ }
+
+ /// Start an asynchronous wait on the object handle.
+ /**
+ * This function is be used to initiate an asynchronous wait against the
+ * object handle. It always returns immediately.
+ *
+ * @param handler The handler to be called when the object handle is set to
+ * the signalled state. Copies will be made of the handler as required. The
+ * function signature of the handler must be:
+ * @code void handler(
+ * const asio::error_code& error // Result of operation.
+ * ); @endcode
+ * Regardless of whether the asynchronous operation completes immediately or
+ * not, the handler will not be invoked from within this function. Invocation
+ * of the handler will be performed in a manner equivalent to using
+ * asio::io_context::post().
+ */
+ template <typename WaitHandler>
+ ASIO_INITFN_RESULT_TYPE(WaitHandler,
+ void (asio::error_code))
+ async_wait(ASIO_MOVE_ARG(WaitHandler) handler)
+ {
+ return this->get_service().async_wait(this->get_implementation(),
+ ASIO_MOVE_CAST(WaitHandler)(handler));
+ }
+};
+
+} // namespace windows
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // defined(ASIO_HAS_WINDOWS_OBJECT_HANDLE)
+ // || defined(GENERATING_DOCUMENTATION)
+
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+
+#endif // ASIO_WINDOWS_BASIC_OBJECT_HANDLE_HPP