整理

include/boost/process/v1/detail/windows/null_in.hpp

@@ -0,0 +1,45 @@
+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+//
+// 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 BOOST_PROCESS_WINDOWS_INITIALIZERS_NULL_IN_HPP
+#define BOOST_PROCESS_WINDOWS_INITIALIZERS_NULL_IN_HPP
+
+#include <boost/winapi/process.hpp>
+#include <boost/winapi/handles.hpp>
+#include <boost/winapi/handle_info.hpp>
+#include <boost/process/v1/detail/handler_base.hpp>
+#include <boost/process/v1/detail/used_handles.hpp>
+#include <boost/process/v1/detail/windows/file_descriptor.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace windows {
+
+struct null_in : public ::boost::process::v1::detail::handler_base, ::boost::process::v1::detail::uses_handles
+{
+    file_descriptor source{"NUL", file_descriptor::read};
+
+    ::boost::winapi::HANDLE_ get_used_handles() const { return source.handle(); }
+
+
+public:
+    template <class WindowsExecutor>
+    void on_setup(WindowsExecutor &e) const
+    {
+        boost::winapi::SetHandleInformation(source.handle(),
+                boost::winapi::HANDLE_FLAG_INHERIT_,
+                boost::winapi::HANDLE_FLAG_INHERIT_);
+
+        e.startup_info.hStdInput = source.handle();
+        e.startup_info.dwFlags  |= boost::winapi::STARTF_USESTDHANDLES_;
+        e.inherit_handles = true;
+    }
+};
+
+}}}}}
+
+#endif