bind_stderr.hpp

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// 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)
 
#pragma once
 
#include <boost/process/windows/initializers/initializer_base.hpp>
#include <boost/iostreams/device/file_descriptor.hpp>
#include <Windows.h>
 
namespace boost::process::windows::initializers
{
 
    class bind_stderr : public initializer_base
    {
    public:
        explicit bind_stderr(const boost::iostreams::file_descriptor_sink& sink) : sink_(sink) {}
 
        template <class WindowsExecutor>
        void on_CreateProcess_setup(WindowsExecutor& e) const
        {
            ::SetHandleInformation(sink_.handle(), HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT);
            e.startup_info.hStdError = sink_.handle();
            e.startup_info.dwFlags |= STARTF_USESTDHANDLES;
            e.inherit_handles = true;
        }
 
    private:
        boost::iostreams::file_descriptor_sink sink_;
    };
 
}