整理

include/boost/process/v1/detail/posix/asio_fwd.hpp

@@ -0,0 +1,66 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_ASIO_FWD_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_ASIO_FWD_HPP_
+
+#include <memory>
+#include <boost/asio/ts/netfwd.hpp>
+
+namespace boost { namespace asio {
+
+class mutable_buffer;
+class mutable_buffers_1;
+
+class const_buffer;
+class const_buffers_1;
+
+template<typename Allocator>
+class basic_streambuf;
+
+typedef basic_streambuf<std::allocator<char>> streambuf;
+
+template <typename Executor>
+class basic_signal_set;
+typedef basic_signal_set<any_io_executor> signal_set;
+
+template <typename Handler>
+class basic_yield_context;
+
+namespace posix {
+
+template <typename Executor>
+class basic_stream_descriptor;
+typedef basic_stream_descriptor<any_io_executor> stream_descriptor;
+
+} //posix
+} //asio
+
+namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+class async_pipe;
+
+template<typename T>
+struct async_in_buffer;
+
+template<int p1, int p2, typename Buffer>
+struct async_out_buffer;
+
+template<int p1, int p2, typename Type>
+struct async_out_future;
+
+} // posix
+} // detail
+
+using ::boost::process::v1::detail::posix::async_pipe;
+
+} // v1
+} // process
+} // boost
+
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_POSIX_ASIO_FWD_HPP_ */

include/boost/process/v1/detail/posix/async_handler.hpp

@@ -0,0 +1,40 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_POSIX_ASYNC_HANDLER_HPP_
+#define BOOST_PROCESS_POSIX_ASYNC_HANDLER_HPP_
+
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <type_traits>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+struct require_io_context {};
+
+struct async_handler : handler_base_ext, require_io_context
+{
+};
+
+template<typename T>
+struct is_async_handler :  std::is_base_of<async_handler, T> {};
+template<typename T>
+struct is_async_handler<T&> :  std::is_base_of<async_handler, T> {};
+template<typename T>
+struct is_async_handler<const T&> :  std::is_base_of<async_handler, T> {};
+
+template<typename T>
+struct does_require_io_context : std::is_base_of<require_io_context, T> {};
+
+template<typename T>
+struct does_require_io_context<T&> : std::is_base_of<require_io_context, T> {};
+
+template<typename T>
+struct does_require_io_context<const T&> : std::is_base_of<require_io_context, T> {};
+
+
+}}}}}
+
+#endif /* BOOST_PROCESS_WINDOWS_ASYNC_HANDLER_HPP_ */

include/boost/process/v1/detail/posix/async_in.hpp

@@ -0,0 +1,111 @@
+// 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_DETAIL_POSIX_ASYNC_IN_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_ASYNC_IN_HPP
+
+#include <boost/process/v1/detail/handler_base.hpp>
+#include <boost/process/v1/detail/posix/async_handler.hpp>
+#include <boost/asio/write.hpp>
+#include <boost/process/v1/async_pipe.hpp>
+#include <memory>
+#include <future>
+#include <boost/process/v1/detail/used_handles.hpp>
+#include <array>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+
+template<typename Buffer>
+struct async_in_buffer : ::boost::process::v1::detail::posix::handler_base_ext,
+                         ::boost::process::v1::detail::posix::require_io_context,
+                         ::boost::process::v1::detail::uses_handles
+{
+    Buffer & buf;
+
+    std::shared_ptr<std::promise<void>> promise;
+    async_in_buffer operator>(std::future<void> & fut)
+    {
+        promise = std::make_shared<std::promise<void>>();
+        fut = promise->get_future(); return std::move(*this);
+    }
+
+
+    std::shared_ptr<boost::process::v1::async_pipe> pipe;
+
+    async_in_buffer(Buffer & buf) : buf(buf)
+    {
+    }
+    template <typename Executor>
+    inline void on_success(Executor)
+    {
+        auto  pipe_              = this->pipe;
+        if (this->promise)
+        {
+            auto promise_ = this->promise;
+
+            boost::asio::async_write(*pipe_, buf,
+                [pipe_, promise_](const boost::system::error_code & ec, std::size_t)
+                {
+                    if (ec && (ec.value() != EBADF) && (ec.value() != EPERM) && (ec.value() != ENOENT))
+                    {
+                        std::error_code e(ec.value(), std::system_category());
+                        promise_->set_exception(std::make_exception_ptr(process_error(e)));
+                    }
+                    else
+                        promise_->set_value();
+                });
+        }
+        else
+            boost::asio::async_write(*pipe_, buf,
+                [pipe_](const boost::system::error_code&, std::size_t){});
+
+        std::move(*pipe_).source().close();
+
+        this->pipe = nullptr;
+    }
+
+    template<typename Executor>
+    void on_error(Executor &, const std::error_code &) const
+    {
+        std::move(*pipe).source().close();
+    }
+
+    template<typename Executor>
+    void on_setup(Executor & exec)
+    {
+        if (!pipe)
+            pipe = std::make_shared<boost::process::v1::async_pipe>(get_io_context(exec.seq));
+    }
+
+    std::array<int, 3> get_used_handles()
+    {
+        if (pipe)
+            return {STDIN_FILENO, pipe->native_source(), pipe->native_sink()};
+        else  //if pipe is not constructed, limit_ds is invoked before -> this also means on_exec_setup gets invoked before.
+            return {STDIN_FILENO, STDIN_FILENO, STDIN_FILENO};
+    }
+
+
+    template <typename Executor>
+    void on_exec_setup(Executor &exec)
+    {
+        if (::dup2(pipe->native_source(), STDIN_FILENO) == -1)
+            exec.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+
+        if (pipe->native_source() != STDIN_FILENO)
+            ::close(pipe->native_source());
+        ::close(pipe->native_sink());
+    }
+};
+
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/async_out.hpp

@@ -0,0 +1,190 @@
+// 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_DETAIL_POSIX_ASYNC_OUT_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_ASYNC_OUT_HPP
+
+
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <boost/asio/posix/stream_descriptor.hpp>
+#include <boost/asio/read.hpp>
+#include <boost/process/v1/async_pipe.hpp>
+#include <istream>
+#include <memory>
+#include <exception>
+#include <future>
+#include <array>
+#include <boost/process/v1/detail/used_handles.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+
+inline int apply_out_handles(int handle, std::integral_constant<int, 1>, std::integral_constant<int, -1>)
+{
+    return ::dup2(handle, STDOUT_FILENO);
+}
+
+inline int apply_out_handles(int handle, std::integral_constant<int, 2>, std::integral_constant<int, -1>)
+{
+    return ::dup2(handle, STDERR_FILENO);
+}
+
+inline int apply_out_handles(int handle, std::integral_constant<int, 1>, std::integral_constant<int, 2>)
+{
+    if (::dup2(handle, STDOUT_FILENO) == -1)
+        return -1;
+    if (::dup2(handle, STDERR_FILENO) == -1)
+        return -1;
+
+    return 0;
+}
+
+template<int p1, int p2, typename Buffer>
+struct async_out_buffer : ::boost::process::v1::detail::posix::handler_base_ext,
+                          ::boost::process::v1::detail::posix::require_io_context,
+                          ::boost::process::v1::detail::uses_handles
+{
+    Buffer & buf;
+
+    std::shared_ptr<boost::process::v1::async_pipe> pipe;
+
+    std::array<int, 4> get_used_handles()
+    {
+        const auto pp1 = p1 != -1 ? p1 : p2;
+        const auto pp2 = p2 != -1 ? p2 : p1;
+
+        if (pipe)
+            return {pipe->native_source(), pipe->native_sink(), pp1, pp2};
+        else  //if pipe is not constructed, limit_ds is invoked before -> this also means on_exec_setup gets invoked before.
+            return {pp1, pp2, pp1, pp2};
+    }
+
+
+    async_out_buffer(Buffer & buf) : buf(buf)
+    {
+    }
+
+    template <typename Executor>
+    inline void on_success(Executor &)
+    {
+        auto  pipe              = this->pipe;
+        boost::asio::async_read(*pipe, buf,
+                [pipe](const boost::system::error_code&, std::size_t){});
+
+        this->pipe = nullptr;
+        std::move(*pipe).sink().close();
+    }
+
+    template<typename Executor>
+    void on_error(Executor &, const std::error_code &) const
+    {
+        std::move(*pipe).sink().close();
+    }
+
+    template<typename Executor>
+    void on_setup(Executor & exec)
+    {
+        pipe = std::make_shared<boost::process::v1::async_pipe>(get_io_context(exec.seq));
+    }
+
+
+    template <typename Executor>
+    void on_exec_setup(Executor &exec)
+    {
+        int res = apply_out_handles(pipe->native_sink(),
+                      std::integral_constant<int, p1>(), std::integral_constant<int, p2>());
+        if (res == -1)
+            exec.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+
+        ::close(pipe->native_sink());
+        ::close(pipe->native_source());
+
+    }
+};
+
+
+
+
+template<int p1, int p2, typename Type>
+struct async_out_future : ::boost::process::v1::detail::posix::handler_base_ext,
+                          ::boost::process::v1::detail::posix::require_io_context
+{
+    std::shared_ptr<std::promise<Type>> promise = std::make_shared<std::promise<Type>>();
+
+    std::shared_ptr<boost::asio::streambuf> buffer = std::make_shared<boost::asio::streambuf>();
+
+    std::shared_ptr<boost::process::v1::async_pipe> pipe;
+
+    async_out_future(std::future<Type> & fut)
+    {
+        fut = promise->get_future();
+    }
+    template <typename Executor>
+    inline void on_success(Executor &)
+    {
+        auto pipe_ = this->pipe;
+
+        auto buffer_  = this->buffer;
+        auto promise_ = this->promise;
+
+        boost::asio::async_read(*pipe_, *buffer_,
+                [pipe_, buffer_, promise_](const boost::system::error_code& ec, std::size_t)
+                {
+                    if (ec && (ec.value() != ENOENT))
+                    {
+                        std::error_code e(ec.value(), std::system_category());
+                        promise_->set_exception(std::make_exception_ptr(process_error(e)));
+                    }
+                    else
+                    {
+                        std::istream is (buffer_.get());
+                        Type arg;
+                        if (buffer_->size() > 0)
+                        {
+                            arg.resize(buffer_->size());
+                            is.read(&*arg.begin(), buffer_->size());
+                        }
+                        promise_->set_value(std::move(arg));
+                    }
+                });
+
+        std::move(*pipe_).sink().close();
+        this->pipe = nullptr;
+    }
+
+    template<typename Executor>
+    void on_error(Executor &, const std::error_code &) const
+    {
+        std::move(*pipe).sink().close();
+    }
+
+    template<typename Executor>
+    void on_setup(Executor & exec)
+    {
+        pipe = std::make_shared<boost::process::v1::async_pipe>(get_io_context(exec.seq));
+    }
+
+    template <typename Executor>
+    void on_exec_setup(Executor &exec)
+    {
+
+        int res = apply_out_handles(pipe->native_sink(),
+                      std::integral_constant<int, p1>(), std::integral_constant<int, p2>());
+        if (res == -1)
+            exec.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+
+        ::close(pipe->native_sink());
+        ::close(pipe->native_source());
+    }
+
+};
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/async_pipe.hpp

@@ -0,0 +1,365 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_ASYNC_PIPE_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_ASYNC_PIPE_HPP_
+
+
+#include <boost/process/v1/detail/posix/basic_pipe.hpp>
+#include <boost/asio/posix/stream_descriptor.hpp>
+#include <boost/asio/post.hpp>
+#include <system_error>
+#include <string>
+#include <utility>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+class async_pipe
+{
+    ::boost::asio::posix::stream_descriptor _source;
+    ::boost::asio::posix::stream_descriptor _sink  ;
+public:
+    typedef int native_handle_type;
+    typedef ::boost::asio::posix::stream_descriptor handle_type;
+    typedef typename handle_type::executor_type executor_type;
+
+    executor_type get_executor()
+    {
+        return _source.get_executor();
+    }
+
+    inline async_pipe(boost::asio::io_context & ios) : async_pipe(ios, ios) {}
+
+    inline async_pipe(boost::asio::io_context & ios_source,
+                      boost::asio::io_context & ios_sink) : _source(ios_source), _sink(ios_sink)
+    {
+        int fds[2];
+        if (::pipe(fds) == -1)
+            boost::process::v1::detail::throw_last_error("pipe(2) failed");
+
+        _source.assign(fds[0]);
+        _sink  .assign(fds[1]);
+    };
+    inline async_pipe(boost::asio::io_context & ios, const std::string & name)
+        : async_pipe(ios, ios, name) {}
+
+    inline async_pipe(boost::asio::io_context & ios_source,
+                      boost::asio::io_context & io_sink, const std::string & name);
+    inline async_pipe(const async_pipe& lhs);
+    async_pipe(async_pipe&& lhs)  : _source(std::move(lhs._source)), _sink(std::move(lhs._sink))
+    {
+        lhs._source = ::boost::asio::posix::stream_descriptor{lhs._source.get_executor()};
+        lhs._sink   = ::boost::asio::posix::stream_descriptor{lhs._sink.  get_executor()};
+    }
+
+    template<class CharT, class Traits = std::char_traits<CharT>>
+    explicit async_pipe(::boost::asio::io_context & ios_source,
+                        ::boost::asio::io_context & ios_sink,
+                         const basic_pipe<CharT, Traits> & p)
+            : _source(ios_source, p.native_source()), _sink(ios_sink, p.native_sink())
+    {
+    }
+
+    template<class CharT, class Traits = std::char_traits<CharT>>
+    explicit async_pipe(boost::asio::io_context & ios, const basic_pipe<CharT, Traits> & p)
+            : async_pipe(ios, ios, p)
+    {
+    }
+
+    template<class CharT, class Traits = std::char_traits<CharT>>
+    inline async_pipe& operator=(const basic_pipe<CharT, Traits>& p);
+    inline async_pipe& operator=(const async_pipe& rhs);
+
+    inline async_pipe& operator=(async_pipe&& lhs);
+
+    ~async_pipe()
+    {
+        boost::system::error_code ec;
+        close(ec);
+    }
+
+    template<class CharT, class Traits = std::char_traits<CharT>>
+    inline explicit operator basic_pipe<CharT, Traits>() const;
+
+    void cancel()
+    {
+        if (_sink.is_open())
+            _sink.cancel();
+        if (_source.is_open())
+            _source.cancel();
+    }
+
+    void close()
+    {
+        if (_sink.is_open())
+            _sink.close();
+        if (_source.is_open())
+            _source.close();
+    }
+    void close(boost::system::error_code & ec)
+    {
+        if (_sink.is_open())
+            _sink.close(ec);
+        if (_source.is_open())
+            _source.close(ec);
+    }
+
+
+    bool is_open() const
+    {
+        return  _sink.is_open() || _source.is_open();
+    }
+    void async_close()
+    {
+        if (_sink.is_open())
+            boost::asio::post(_sink.get_executor(),   [this]{_sink.close();});
+        if (_source.is_open())
+            boost::asio::post(_source.get_executor(), [this]{_source.close();});
+    }
+
+    template<typename MutableBufferSequence>
+    std::size_t read_some(const MutableBufferSequence & buffers)
+    {
+        return _source.read_some(buffers);
+    }
+    template<typename MutableBufferSequence>
+    std::size_t write_some(const MutableBufferSequence & buffers)
+    {
+        return _sink.write_some(buffers);
+    }
+
+    template<typename MutableBufferSequence>
+    std::size_t read_some(const MutableBufferSequence & buffers, boost::system::error_code & ec) noexcept
+    {
+        return _source.read_some(buffers, ec);
+    }
+    template<typename MutableBufferSequence>
+    std::size_t write_some(const MutableBufferSequence & buffers, boost::system::error_code & ec) noexcept
+    {
+        return _sink.write_some(buffers, ec);
+    }
+
+
+    native_handle_type native_source() const {return const_cast<boost::asio::posix::stream_descriptor&>(_source).native_handle();}
+    native_handle_type native_sink  () const {return const_cast<boost::asio::posix::stream_descriptor&>(_sink  ).native_handle();}
+
+    template<typename MutableBufferSequence,
+             typename ReadHandler>
+    BOOST_ASIO_INITFN_RESULT_TYPE(
+          ReadHandler, void(boost::system::error_code, std::size_t))
+      async_read_some(
+        const MutableBufferSequence & buffers,
+              ReadHandler &&handler)
+    {
+        return _source.async_read_some(buffers, std::forward<ReadHandler>(handler));
+    }
+
+    template<typename ConstBufferSequence,
+             typename WriteHandler>
+    BOOST_ASIO_INITFN_RESULT_TYPE(
+              WriteHandler, void(boost::system::error_code, std::size_t))
+      async_write_some(
+        const ConstBufferSequence & buffers,
+        WriteHandler&& handler)
+    {
+        return _sink.async_write_some(buffers, std::forward<WriteHandler>(handler));
+    }
+
+
+    const handle_type & sink  () const & {return _sink;}
+    const handle_type & source() const & {return _source;}
+
+    handle_type && sink()  &&  { return std::move(_sink); }
+    handle_type && source()&&  { return std::move(_source); }
+
+    handle_type source(::boost::asio::io_context& ios) &&
+    {
+        ::boost::asio::posix::stream_descriptor stolen(ios, _source.release());
+        return stolen;
+    }
+    handle_type sink  (::boost::asio::io_context& ios) &&
+    {
+        ::boost::asio::posix::stream_descriptor stolen(ios, _sink.release());
+        return stolen;
+    }
+
+    handle_type source(::boost::asio::io_context& ios) const &
+    {
+        auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(_source).native_handle();
+        return ::boost::asio::posix::stream_descriptor(ios, ::dup(source_in));
+    }
+    handle_type sink  (::boost::asio::io_context& ios) const &
+    {
+        auto sink_in = const_cast<::boost::asio::posix::stream_descriptor &>(_sink).native_handle();
+        return ::boost::asio::posix::stream_descriptor(ios, ::dup(sink_in));
+    }
+};
+
+
+async_pipe::async_pipe(boost::asio::io_context & ios_source,
+                       boost::asio::io_context & ios_sink,
+                       const std::string & name) : _source(ios_source), _sink(ios_sink)
+{
+    auto fifo = mkfifo(name.c_str(), 0666 );
+
+    if (fifo != 0)
+        boost::process::v1::detail::throw_last_error("mkfifo() failed");
+
+
+    int  read_fd = open(name.c_str(), O_RDWR);
+
+    if (read_fd == -1)
+        boost::process::v1::detail::throw_last_error();
+
+    int write_fd = dup(read_fd);
+
+    if (write_fd == -1)
+        boost::process::v1::detail::throw_last_error();
+
+    _source.assign(read_fd);
+    _sink  .assign(write_fd);
+}
+
+async_pipe::async_pipe(const async_pipe & p) :
+        _source(const_cast<async_pipe&>(p)._source.get_executor()),
+        _sink(  const_cast<async_pipe&>(p)._sink.get_executor())
+{
+
+    //cannot get the handle from a const object.
+    auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(_source).native_handle();
+    auto sink_in   = const_cast<::boost::asio::posix::stream_descriptor &>(_sink).native_handle();
+    if (source_in == -1)
+        _source.assign(-1);
+    else
+    {
+        _source.assign(::dup(source_in));
+        if (_source.native_handle()== -1)
+            ::boost::process::v1::detail::throw_last_error("dup()");
+    }
+
+    if (sink_in   == -1)
+        _sink.assign(-1);
+    else
+    {
+        _sink.assign(::dup(sink_in));
+        if (_sink.native_handle() == -1)
+            ::boost::process::v1::detail::throw_last_error("dup()");
+    }
+}
+
+async_pipe& async_pipe::operator=(const async_pipe & p)
+{
+    int source;
+    int sink;
+
+    //cannot get the handle from a const object.
+    auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(p._source).native_handle();
+    auto sink_in   = const_cast<::boost::asio::posix::stream_descriptor &>(p._sink).native_handle();
+    if (source_in == -1)
+        source = -1;
+    else
+    {
+        source = ::dup(source_in);
+        if (source == -1)
+            ::boost::process::v1::detail::throw_last_error("dup()");
+    }
+
+    if (sink_in   == -1)
+        sink = -1;
+    else
+    {
+        sink  = ::dup(sink_in);
+        if (sink == -1)
+            ::boost::process::v1::detail::throw_last_error("dup()");
+    }
+    _source.assign(source);
+    _sink.  assign(sink);
+
+    return *this;
+}
+
+async_pipe& async_pipe::operator=(async_pipe && lhs)
+{
+    std::swap(_source, lhs._source);
+    std::swap(_sink, lhs._sink);
+    return *this;
+}
+
+template<class CharT, class Traits>
+async_pipe::operator basic_pipe<CharT, Traits>() const
+{
+    int source;
+    int sink;
+
+    //cannot get the handle from a const object.
+    auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(_source).native_handle();
+    auto sink_in   = const_cast<::boost::asio::posix::stream_descriptor &>(_sink).native_handle();
+
+
+    if (source_in == -1)
+        source = -1;
+    else
+    {
+        source = ::dup(source_in);
+        if (source == -1)
+            ::boost::process::v1::detail::throw_last_error("dup()");
+    }
+
+    if (sink_in   == -1)
+        sink = -1;
+    else
+    {
+        sink = ::dup(sink_in);
+        if (sink == -1)
+            ::boost::process::v1::detail::throw_last_error("dup()");
+    }
+
+    return basic_pipe<CharT, Traits>{source, sink};
+}
+
+
+inline bool operator==(const async_pipe & lhs, const async_pipe & rhs)
+{
+    return compare_handles(lhs.native_source(), rhs.native_source()) &&
+           compare_handles(lhs.native_sink(),   rhs.native_sink());
+}
+
+inline bool operator!=(const async_pipe & lhs, const async_pipe & rhs)
+{
+    return !compare_handles(lhs.native_source(), rhs.native_source()) ||
+           !compare_handles(lhs.native_sink(),   rhs.native_sink());
+}
+
+template<class Char, class Traits>
+inline bool operator==(const async_pipe & lhs, const basic_pipe<Char, Traits> & rhs)
+{
+    return compare_handles(lhs.native_source(), rhs.native_source()) &&
+           compare_handles(lhs.native_sink(),   rhs.native_sink());
+}
+
+template<class Char, class Traits>
+inline bool operator!=(const async_pipe & lhs, const basic_pipe<Char, Traits> & rhs)
+{
+    return !compare_handles(lhs.native_source(), rhs.native_source()) ||
+           !compare_handles(lhs.native_sink(),   rhs.native_sink());
+}
+
+template<class Char, class Traits>
+inline bool operator==(const basic_pipe<Char, Traits> & lhs, const async_pipe & rhs)
+{
+    return compare_handles(lhs.native_source(), rhs.native_source()) &&
+           compare_handles(lhs.native_sink(),   rhs.native_sink());
+}
+
+template<class Char, class Traits>
+inline bool operator!=(const basic_pipe<Char, Traits> & lhs, const async_pipe & rhs)
+{
+    return !compare_handles(lhs.native_source(), rhs.native_source()) ||
+           !compare_handles(lhs.native_sink(),   rhs.native_sink());
+}
+
+}}}}}
+
+#endif /* INCLUDE_BOOST_PIPE_DETAIL_WINDOWS_ASYNC_PIPE_HPP_ */

include/boost/process/v1/detail/posix/basic_cmd.hpp

@@ -0,0 +1,182 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_BASIC_CMD_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_BASIC_CMD_HPP_
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <boost/process/v1/detail/posix/cmd.hpp>
+#include <boost/algorithm/string/replace.hpp>
+#include <boost/process/v1/shell.hpp>
+#include <boost/algorithm/string/trim.hpp>
+#include <boost/algorithm/string/join.hpp>
+#include <string>
+#include <vector>
+
+namespace boost
+{
+namespace process
+{
+BOOST_PROCESS_V1_INLINE namespace v1
+{
+namespace detail
+{
+namespace posix
+{
+
+inline std::string build_cmd_shell(const std::string & exe, std::vector<std::string> && data)
+{
+    std::string st = exe;
+    for (auto & arg : data)
+    {
+        boost::replace_all(arg, "\"", "\\\"");
+
+        auto it = std::find(arg.begin(), arg.end(), ' ');//contains space?
+        if (it != arg.end())//ok, contains spaces.
+        {
+            //the first one is put directly onto the output,
+            //because then I don't have to copy the whole string
+            arg.insert(arg.begin(), '"' );
+            arg += '"'; //that is the post one.
+        }
+
+        if (!st.empty())//first one does not need a preceding space
+            st += ' ';
+
+        st += arg;
+    }
+    return  st ;
+}
+
+inline std::vector<std::string>  build_args(const std::string & data)
+{
+    std::vector<std::string>  st;
+    
+    typedef std::string::const_iterator itr_t;
+
+    //normal quotes outside can be stripped, inside ones marked as \" will be replaced.
+    auto make_entry = [](const itr_t & begin, const itr_t & end)
+    {
+        std::string data;
+        if ((*begin == '"') && (*(end-1) == '"'))
+            data.assign(begin+1, end-1);
+        else
+            data.assign(begin, end);
+
+        boost::replace_all(data, "\\\"", "\"");
+        return data;
+
+    };
+
+    bool in_quote = false;
+
+    auto part_beg = data.cbegin();
+    auto itr = data.cbegin();
+
+    for (; itr != data.cend(); itr++)
+    {
+        if (*itr == '"')
+            in_quote ^= true;
+
+        if (!in_quote && (*itr == ' '))
+        {
+            //alright, got a space
+
+            if ((itr != data.cbegin()) && (*(itr -1) != ' ' ))
+                st.push_back(make_entry(part_beg, itr));
+
+            part_beg = itr+1;
+        }
+    }
+    if (part_beg != itr)
+        st.emplace_back(make_entry(part_beg, itr));
+
+
+    return st;
+}
+
+template<typename Char>
+struct exe_cmd_init;
+
+template<>
+struct exe_cmd_init<char> : boost::process::v1::detail::api::handler_base_ext
+{
+    exe_cmd_init(const exe_cmd_init & ) = delete;
+    exe_cmd_init(exe_cmd_init && ) = default;
+    exe_cmd_init(std::string && exe, std::vector<std::string> && args)
+            : exe(std::move(exe)), args(std::move(args)) {};
+    template <class Executor>
+    void on_setup(Executor& exec) 
+    {
+        if (exe.empty()) //cmd style
+        {
+            if (args.empty())
+                exec.exe = "";
+            else
+                exec.exe = args.front().c_str();    
+            exec.cmd_style = true;
+        }
+        else
+            exec.exe = &exe.front();
+
+        cmd_impl = make_cmd();
+        exec.cmd_line = cmd_impl.data();
+    }
+    static exe_cmd_init exe_args(std::string && exe, std::vector<std::string> && args) {return exe_cmd_init(std::move(exe), std::move(args));}
+    static exe_cmd_init cmd     (std::string && cmd)
+    {
+        auto args = build_args(cmd);
+        return exe_cmd_init({}, std::move(args));
+    }
+
+    static exe_cmd_init exe_args_shell(std::string&& exe, std::vector<std::string> && args)
+    {
+        auto cmd = build_cmd_shell(std::move(exe), std::move(args));
+
+        std::vector<std::string> args_ = {"-c", std::move(cmd)};
+        std::string sh = shell().string();
+
+        return exe_cmd_init(std::move(sh), std::move(args_));
+    }
+    static exe_cmd_init cmd_shell(std::string&& cmd)
+    {
+        std::vector<std::string> args = {"-c", cmd};
+        std::string sh = shell().string();
+
+        return exe_cmd_init(
+                std::move(sh),
+                {std::move(args)});
+    }
+private:
+    inline std::vector<char*> make_cmd();
+    std::string exe;
+    std::vector<std::string> args;
+    std::vector<char*> cmd_impl;
+};
+
+std::vector<char*> exe_cmd_init<char>::make_cmd()
+{
+    // any string must be writable.
+    static char empty_string[1] = "";
+    std::vector<char*> vec;
+    if (!exe.empty())
+        vec.push_back(exe.empty() ? empty_string : &exe.front());
+
+    if (!args.empty()) {
+        for (auto & v : args)
+            vec.push_back(v.empty() ? empty_string : &v.front());
+    }
+
+    vec.push_back(nullptr);
+
+    return vec;
+}
+
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/basic_pipe.hpp

@@ -0,0 +1,200 @@
+// 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_POSIX_PIPE_HPP
+#define BOOST_PROCESS_POSIX_PIPE_HPP
+
+
+#include <boost/process/v1/filesystem.hpp>
+#include <boost/process/v1/detail/posix/compare_handles.hpp>
+#include <system_error>
+#include <array>
+#include <unistd.h>
+#include <fcntl.h>
+#include <memory>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+
+template<class CharT, class Traits = std::char_traits<CharT>>
+class basic_pipe
+{
+    int _source = -1;
+    int _sink   = -1;
+public:
+    explicit basic_pipe(int source, int sink) : _source(source), _sink(sink) {}
+    explicit basic_pipe(int source, int sink, const std::string&) : _source(source), _sink(sink) {}
+    typedef CharT                      char_type  ;
+    typedef          Traits            traits_type;
+    typedef typename Traits::int_type  int_type   ;
+    typedef typename Traits::pos_type  pos_type   ;
+    typedef typename Traits::off_type  off_type   ;
+    typedef          int               native_handle_type;
+
+    basic_pipe()
+    {
+        int fds[2];
+        if (::pipe(fds) == -1)
+            boost::process::v1::detail::throw_last_error("pipe(2) failed");
+
+        _source = fds[0];
+        _sink   = fds[1];
+    }
+    inline basic_pipe(const basic_pipe& rhs);
+    explicit inline basic_pipe(const std::string& name);
+    basic_pipe(basic_pipe&& lhs)  : _source(lhs._source), _sink(lhs._sink)
+    {
+        lhs._source = -1;
+        lhs._sink   = -1;
+    }
+    inline basic_pipe& operator=(const basic_pipe& );
+    basic_pipe& operator=(basic_pipe&& lhs)
+    {
+        _source = lhs._source;
+        _sink   = lhs._sink ;
+
+        lhs._source = -1;
+        lhs._sink   = -1;
+
+        return *this;
+    }
+    ~basic_pipe()
+    {
+        if (_sink   != -1)
+            ::close(_sink);
+        if (_source != -1)
+            ::close(_source);
+    }
+    native_handle_type native_source() const {return _source;}
+    native_handle_type native_sink  () const {return _sink;}
+
+    void assign_source(native_handle_type h) { _source = h;}
+    void assign_sink  (native_handle_type h) { _sink = h;}
+
+    int_type write(const char_type * data, int_type count)
+    {
+        ssize_t write_len;
+        while ((write_len = ::write(_sink, data, count * sizeof(char_type))) == -1)
+        {
+            //Try again if interrupted
+            auto err = errno;
+            if (err != EINTR)
+                ::boost::process::v1::detail::throw_last_error();
+        }
+        return static_cast<int_type>(write_len);
+    }
+    int_type read(char_type * data, int_type count)
+    {
+        ssize_t read_len;
+        while ((read_len = ::read(_source, data, count * sizeof(char_type))) == -1)
+        {
+            //Try again if interrupted
+            auto err = errno;
+            if (err != EINTR)
+                ::boost::process::v1::detail::throw_last_error();
+        }
+        return static_cast<int_type>(read_len);
+    }
+
+    bool is_open() const
+    {
+        return (_source != -1) ||
+               (_sink   != -1);
+    }
+
+    void close()
+    {
+        if (_source != -1)
+            ::close(_source);
+        if (_sink != -1)
+            ::close(_sink);
+        _source = -1;
+        _sink   = -1;
+    }
+};
+
+template<class CharT, class Traits>
+basic_pipe<CharT, Traits>::basic_pipe(const basic_pipe & rhs)
+{
+       if (rhs._source != -1)
+       {
+           _source = ::dup(rhs._source);
+           if (_source == -1)
+               ::boost::process::v1::detail::throw_last_error("dup() failed");
+       }
+    if (rhs._sink != -1)
+    {
+        _sink = ::dup(rhs._sink);
+        if (_sink == -1)
+            ::boost::process::v1::detail::throw_last_error("dup() failed");
+
+    }
+}
+
+template<class CharT, class Traits>
+basic_pipe<CharT, Traits> &basic_pipe<CharT, Traits>::operator=(const basic_pipe & rhs)
+{
+       if (rhs._source != -1)
+       {
+           _source = ::dup(rhs._source);
+           if (_source == -1)
+               ::boost::process::v1::detail::throw_last_error("dup() failed");
+       }
+    if (rhs._sink != -1)
+    {
+        _sink = ::dup(rhs._sink);
+        if (_sink == -1)
+            ::boost::process::v1::detail::throw_last_error("dup() failed");
+
+    }
+    return *this;
+}
+
+
+template<class CharT, class Traits>
+basic_pipe<CharT, Traits>::basic_pipe(const std::string & name)
+{
+    auto fifo = mkfifo(name.c_str(), 0666 );
+            
+    if (fifo != 0) 
+        boost::process::v1::detail::throw_last_error("mkfifo() failed");
+
+    
+    int  read_fd = open(name.c_str(), O_RDWR);
+        
+    if (read_fd == -1)
+        boost::process::v1::detail::throw_last_error();
+    
+    int write_fd = dup(read_fd);
+    
+    if (write_fd == -1)
+        boost::process::v1::detail::throw_last_error();
+
+    _sink = write_fd;
+    _source = read_fd;
+    ::unlink(name.c_str());
+}
+
+template<class Char, class Traits>
+inline bool operator==(const basic_pipe<Char, Traits> & lhs, const basic_pipe<Char, Traits> & rhs)
+{
+    return compare_handles(lhs.native_source(), rhs.native_source()) &&
+           compare_handles(lhs.native_sink(),   rhs.native_sink());
+}
+
+template<class Char, class Traits>
+inline bool operator!=(const basic_pipe<Char, Traits> & lhs, const basic_pipe<Char, Traits> & rhs)
+{
+    return !compare_handles(lhs.native_source(), rhs.native_source()) ||
+           !compare_handles(lhs.native_sink(),   rhs.native_sink());
+}
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/child_handle.hpp

@@ -0,0 +1,60 @@
+// 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_POSIX_CHILD_HPP
+#define BOOST_PROCESS_POSIX_CHILD_HPP
+
+#include <utility>
+#include <system_error>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+typedef ::pid_t pid_t;
+
+struct child_handle
+{
+    int pid {-1};
+    explicit child_handle(int pid) : pid(pid)
+    {}
+
+    child_handle()  = default;
+    ~child_handle() = default;
+
+    child_handle(const child_handle & c) = delete;
+    child_handle(child_handle && c) : pid(c.pid)
+    {
+        c.pid = -1;
+    }
+    child_handle &operator=(const child_handle & c) = delete;
+    child_handle &operator=(child_handle && c)
+    {
+        pid = c.pid;
+        c.pid = -1;
+        return *this;
+    }
+
+    int id() const
+    {
+        return pid;
+    }
+    bool in_group() const {return true;}
+    bool in_group(std::error_code&) const noexcept {return true;}
+
+    typedef int process_handle_t;
+    process_handle_t process_handle() const { return pid; }
+
+    bool valid() const
+    {
+        return pid != -1;
+    }
+};
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/close_in.hpp

@@ -0,0 +1,34 @@
+// 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_CLOSE_IN_HPP
+#define BOOST_PROCESS_WINDOWS_INITIALIZERS_CLOSE_IN_HPP
+
+
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <boost/process/v1/detail/used_handles.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+struct close_in : handler_base_ext, ::boost::process::v1::detail::uses_handles
+{
+    template <class Executor>
+    void on_exec_setup(Executor &e) const
+    {
+        if (::close(STDIN_FILENO) == -1)
+            e.set_error(::boost::process::v1::detail::get_last_error(), "close() failed");
+    }
+
+    int get_used_handles() {return STDIN_FILENO;}
+
+};
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/close_out.hpp

@@ -0,0 +1,58 @@
+// 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_DETAIL_POSIX_CLOSE_OUT_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_CLOSE_OUT_HPP
+
+#include <boost/process/v1/detail/used_handles.hpp>
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <array>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+template<int p1, int p2>
+struct close_out : handler_base_ext
+{
+    template <class Executor>
+    inline void on_exec_setup(Executor &e) const;
+
+    std::array<int, 2> get_used_handles() {return {{p1 != -1 ? p1 : p2, p2 != -1 ? p2 : p1}};}
+};
+
+template<>
+template<typename Executor>
+void close_out<1,-1>::on_exec_setup(Executor &e) const
+{
+    if (::close(STDOUT_FILENO) == -1)
+        e.set_error(::boost::process::v1::detail::get_last_error(), "close() failed");
+
+}
+
+template<>
+template<typename Executor>
+void close_out<2,-1>::on_exec_setup(Executor &e) const
+{
+    if (::close(STDERR_FILENO) == -1)
+        e.set_error(::boost::process::v1::detail::get_last_error(), "close() failed");
+}
+
+template<>
+template<typename Executor>
+void close_out<1,2>::on_exec_setup(Executor &e) const
+{
+    if (::close(STDOUT_FILENO) == -1)
+        e.set_error(::boost::process::v1::detail::get_last_error(), "close() failed");
+
+    if (::close(STDERR_FILENO) == -1)
+        e.set_error(::boost::process::v1::detail::get_last_error(), "close() failed");
+}
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/cmd.hpp

@@ -0,0 +1,106 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_CMD_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_CMD_HPP_
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <string>
+#include <vector>
+
+namespace boost
+{
+namespace process
+{
+BOOST_PROCESS_V1_INLINE namespace v1
+{
+namespace detail
+{
+namespace posix
+{
+
+
+template<typename Char>
+inline std::vector<std::basic_string<Char>> build_cmd(const std::basic_string<Char> & value)
+{
+    std::vector<std::basic_string<Char>>  ret;
+
+    bool in_quotes = false;
+    auto beg = value.begin();
+    for (auto itr = value.begin(); itr != value.end(); itr++)
+    {
+        if (*itr == quote_sign<Char>())
+            in_quotes = !in_quotes;
+
+        if (!in_quotes && (*itr == space_sign<Char>()))
+        {
+            if (itr != beg)
+            {
+                ret.emplace_back(beg, itr);
+                beg = itr + 1;
+            }
+        }
+    }
+    if (beg != value.end())
+        ret.emplace_back(beg, value.end());
+
+    return ret;
+}
+
+template<typename Char>
+struct cmd_setter_ : handler_base_ext
+{
+    typedef Char value_type;
+    typedef std::basic_string<value_type> string_type;
+
+    cmd_setter_(string_type && cmd_line)      : _cmd_line(api::build_cmd(std::move(cmd_line))) {}
+    cmd_setter_(const string_type & cmd_line) : _cmd_line(api::build_cmd(cmd_line)) {}
+    template <class Executor>
+    void on_setup(Executor& exec) 
+    {
+        exec.exe = _cmd_impl.front();
+        exec.cmd_line = &_cmd_impl.front();
+        exec.cmd_style = true;
+    }
+    string_type str() const
+    {
+        string_type ret;
+        std::size_t size = 0;
+        for (auto & cmd : _cmd_line)
+            size += cmd.size() + 1;
+        ret.reserve(size -1);
+
+        for (auto & cmd : _cmd_line)
+        {
+            if (!ret.empty())
+                ret += equal_sign<Char>();
+            ret += cmd;
+        }
+        return ret;
+    }
+private:
+    static inline std::vector<Char*> make_cmd(std::vector<string_type> & args);
+    std::vector<string_type> _cmd_line;
+    std::vector<Char*> _cmd_impl  = make_cmd(_cmd_line);
+};
+
+template<typename Char>
+std::vector<Char*> cmd_setter_<Char>::make_cmd(std::vector<std::basic_string<Char>> & args)
+{
+    std::vector<Char*> vec;
+
+    for (auto & v : args)
+        vec.push_back(&v.front());
+
+    vec.push_back(nullptr);
+
+    return vec;
+}
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/compare_handles.hpp

@@ -0,0 +1,42 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_COMPARE_HANDLES_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_COMPARE_HANDLES_HPP_
+
+
+#include <boost/process/v1/detail/config.hpp>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+
+inline bool compare_handles(int lhs, int rhs)
+{
+
+    if ((lhs == -1) || (rhs == -1))
+        return false;
+
+    if (lhs == rhs)
+        return true;
+
+    struct stat stat1, stat2;
+    if(fstat(lhs, &stat1) < 0) ::boost::process::v1::detail::throw_last_error("fstat() failed");
+    if(fstat(rhs, &stat2) < 0) ::boost::process::v1::detail::throw_last_error("fstat() failed");
+    
+    return (stat1.st_dev == stat2.st_dev) && (stat1.st_ino == stat2.st_ino);   
+}
+
+
+
+
+
+}}}}}
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_POSIX_COMPARE_HANDLES_HPP_ */

include/boost/process/v1/detail/posix/env_init.hpp

@@ -0,0 +1,41 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_ENV_INIT_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_ENV_INIT_HPP_
+
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <boost/process/v1/environment.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+template<typename Char>
+struct env_init;
+
+template<>
+struct env_init<char> : handler_base_ext
+{
+    boost::process::v1::environment env;
+
+    env_init(boost::process::v1::environment && env) : env(std::move(env)) {};
+    env_init(const boost::process::v1::environment & env) : env(env) {};
+
+
+    template <class Executor>
+    void on_setup(Executor &exec) const
+    {
+        exec.env = env._env_impl;
+    }
+
+};
+
+}}}}}
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_WINDOWS_ENV_INIT_HPP_ */

include/boost/process/v1/detail/posix/environment.hpp

@@ -0,0 +1,327 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_ENVIRONMENT_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_ENVIRONMENT_HPP_
+
+#include <string>
+#include <vector>
+#include <unordered_map>
+#include <boost/process/v1/detail/config.hpp>
+#include <algorithm>
+#include <cstdlib>
+#include <boost/process/v1/locale.hpp>
+
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+template<typename Char>
+class native_environment_impl
+{
+    static std::vector<std::basic_string<Char>>  _load()
+    {
+        std::vector<std::basic_string<Char>> val;
+        auto p = environ;
+        while (*p != nullptr)
+        {
+            std::string str = *p;
+            val.push_back(::boost::process::v1::detail::convert(str));
+            p++;
+        }
+        return val;
+    }
+    static std::vector<Char*> _load_var(std::vector<std::basic_string<Char>> & vec)
+    {
+        std::vector<Char*> val;
+        val.resize(vec.size() + 1);
+        std::transform(vec.begin(), vec.end(), val.begin(),
+                [](std::basic_string<Char> & str)
+                {
+                    return &str.front();
+                });
+        val.back() = nullptr;
+        return val;
+    }
+    std::vector<std::basic_string<Char>> _buffer = _load();
+    std::vector<Char*> _impl = _load_var(_buffer);
+public:
+    using char_type = Char;
+    using pointer_type = const char_type*;
+    using string_type = std::basic_string<char_type>;
+    using native_handle_type = char_type **;
+
+    void reload()
+    {
+        _buffer = _load();
+        _impl = _load_var(_buffer);
+        _env_impl = _impl.data();
+    }
+
+    string_type get(const pointer_type id) { return get(string_type(id)); }
+    void        set(const pointer_type id, const pointer_type value)
+    {
+        set(string_type(id), string_type(value));
+    }
+    void      reset(const pointer_type id) { reset(string_type(id)); }
+
+    string_type get(const string_type & id)
+    {
+        std::string id_c = ::boost::process::v1::detail::convert(id);
+        std::string g = ::getenv(id_c.c_str());
+        return ::boost::process::v1::detail::convert(g.c_str());
+    }
+    void        set(const string_type & id, const string_type & value)
+    {
+        std::string id_c    = ::boost::process::v1::detail::convert(id.c_str());
+        std::string value_c = ::boost::process::v1::detail::convert(value.c_str());
+        auto res = ::setenv(id_c.c_str(), value_c.c_str(), true);
+        if (res != 0)
+            boost::process::v1::detail::throw_last_error();
+    }
+    void      reset(const string_type & id)
+    {
+        std::string id_c = ::boost::process::v1::detail::convert(id.c_str());
+        auto res = ::unsetenv(id_c.c_str());
+        if (res != 0)
+            ::boost::process::v1::detail::throw_last_error();
+    }
+
+    native_environment_impl() = default;
+    native_environment_impl(const native_environment_impl& ) = delete;
+    native_environment_impl(native_environment_impl && ) = default;
+    native_environment_impl & operator=(const native_environment_impl& ) = delete;
+    native_environment_impl & operator=(native_environment_impl && ) = default;
+    native_handle_type _env_impl = _impl.data();
+
+    native_handle_type native_handle() const {return _env_impl;}
+};
+
+template<>
+class native_environment_impl<char>
+{
+public:
+    using char_type = char;
+    using pointer_type = const char_type*;
+    using string_type = std::basic_string<char_type>;
+    using native_handle_type = char_type **;
+
+    void reload() {this->_env_impl = environ;}
+
+    string_type get(const pointer_type id) { return getenv(id); }
+    void        set(const pointer_type id, const pointer_type value)
+    {
+        auto res = ::setenv(id, value, 1);
+        if (res != 0)
+            boost::process::v1::detail::throw_last_error();
+        reload();
+    }
+    void      reset(const pointer_type id)
+    {
+        auto res = ::unsetenv(id);
+        if (res != 0)
+            boost::process::v1::detail::throw_last_error();
+        reload();
+    }
+
+    string_type get(const string_type & id) {return get(id.c_str());}
+    void        set(const string_type & id, const string_type & value) {set(id.c_str(), value.c_str()); }
+    void      reset(const string_type & id) {reset(id.c_str());}
+
+    native_environment_impl() = default;
+    native_environment_impl(const native_environment_impl& ) = delete;
+    native_environment_impl(native_environment_impl && ) = default;
+    native_environment_impl & operator=(const native_environment_impl& ) = delete;
+    native_environment_impl & operator=(native_environment_impl && ) = default;
+    native_handle_type _env_impl = environ;
+
+    native_handle_type native_handle() const {return environ;}
+};
+
+
+
+template<typename Char>
+struct basic_environment_impl
+{
+    std::vector<std::basic_string<Char>> _data {};
+    static std::vector<Char*> _load_var(std::vector<std::basic_string<Char>> & data);
+    std::vector<Char*> _env_arr{_load_var(_data)};
+public:
+    using char_type = Char;
+    using pointer_type = const char_type*;
+    using string_type = std::basic_string<char_type>;
+    using native_handle_type = Char**;
+    void reload()
+    {
+        _env_arr = _load_var(_data);
+        _env_impl = _env_arr.data();
+    }
+
+    string_type get(const pointer_type id) {return get(string_type(id));}
+    void        set(const pointer_type id, const pointer_type value) {set(string_type(id), value);}
+    void      reset(const pointer_type id)  {reset(string_type(id));}
+
+    string_type get(const string_type & id);
+    void        set(const string_type & id, const string_type & value);
+    void      reset(const string_type & id);
+
+    basic_environment_impl(const native_environment_impl<Char> & nei);
+    basic_environment_impl() = default;
+    basic_environment_impl(const basic_environment_impl& rhs)
+        : _data(rhs._data)
+    {
+
+    }
+    basic_environment_impl(basic_environment_impl && ) = default;
+    basic_environment_impl & operator=(const basic_environment_impl& rhs)
+    {
+        _data = rhs._data;
+        _env_arr = _load_var(_data);
+        _env_impl = &*_env_arr.begin();
+        return *this;
+    }
+    basic_environment_impl & operator=(basic_environment_impl && ) = default;
+
+    template<typename CharR>
+    explicit inline  basic_environment_impl(
+                const basic_environment_impl<CharR>& rhs,
+                const ::boost::process::v1::codecvt_type & cv = ::boost::process::v1::codecvt())
+        : _data(rhs._data.size())
+    {
+        std::transform(rhs._data.begin(), rhs._data.end(), _data.begin(),
+                [&](const std::basic_string<CharR> & st)
+                {
+                    return ::boost::process::v1::detail::convert(st, cv);
+                }
+
+            );
+        reload();
+    }
+
+    template<typename CharR>
+    basic_environment_impl & operator=(const basic_environment_impl<CharR>& rhs)
+    {
+        _data = ::boost::process::v1::detail::convert(rhs._data);
+        _env_arr = _load_var(&*_data.begin());
+        _env_impl = &*_env_arr.begin();
+        return *this;
+    }
+
+    Char ** _env_impl = &*_env_arr.data();
+
+    native_handle_type native_handle() const {return &_data.front();}
+};
+
+
+template<typename Char>
+basic_environment_impl<Char>::basic_environment_impl(const native_environment_impl<Char> & nei)
+{
+    auto beg = nei.native_handle();
+
+    auto end = beg;
+    while (*end != nullptr)
+        end++;
+    this->_data.assign(beg, end);
+    reload();
+}
+
+
+template<typename Char>
+inline auto basic_environment_impl<Char>::get(const string_type &id) -> string_type
+{
+    auto itr = std::find_if(_data.begin(), _data.end(),
+            [&](const string_type & st) -> bool
+            {
+                if (st.size() <= id.size())
+                    return false;
+                return std::equal(id.begin(), id.end(), st.begin()) && (st[id.size()] == equal_sign<Char>());
+            }
+        );
+
+    if (itr == _data.end())
+    {
+        return "";
+    }
+    else return
+        itr->data() + id.size(); //id=Thingy -> +2 points to T
+}
+
+template<typename Char>
+inline void basic_environment_impl<Char>::set(const string_type &id, const string_type &value)
+{
+    auto itr = std::find_if(_data.begin(), _data.end(),
+        [&](const string_type & st) -> bool
+        {
+            if (st.size() <= id.size())
+                return false;
+            return std::equal(id.begin(), id.end(), st.begin()) && (st[id.size()] == equal_sign<Char>());
+        }
+    );
+
+    if (itr != _data.end())
+        *itr = id + equal_sign<Char>() + value;
+    else
+        _data.push_back(id + equal_sign<Char>() + value);
+
+    reload();
+}
+
+template<typename Char>
+inline void  basic_environment_impl<Char>::reset(const string_type &id)
+{
+    auto itr = std::find_if(_data.begin(), _data.end(),
+        [&](const string_type & st) -> bool
+        {
+            if (st.size() <= id.size())
+                return false;
+            return std::equal(id.begin(), id.end(), st.begin()) && (st[id.size()] == equal_sign<Char>());
+        }
+    );
+    if (itr != _data.end())
+    {
+        _data.erase(itr);//and remove it
+    }
+
+    reload();
+
+
+}
+
+template<typename Char>
+std::vector<Char*> basic_environment_impl<Char>::_load_var(std::vector<std::basic_string<Char>> & data)
+{
+    std::vector<Char*> ret;
+    ret.reserve(data.size() +1);
+
+    for (auto & val : data)
+    {
+        if (val.empty())
+            val.push_back(0);
+        ret.push_back(&val.front());
+    }
+
+    ret.push_back(nullptr);
+    return ret;
+}
+
+template<typename T> constexpr T env_seperator();
+template<> constexpr   char   env_seperator() {return  ':'; }
+template<> constexpr  wchar_t env_seperator() {return L':'; }
+
+
+typedef int native_handle_t;
+
+inline int  get_id()        {return getpid(); }
+inline int native_handle()  {return getpid(); }
+
+}
+
+}
+}
+}
+}
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_WINDOWS_ENV_STORAGE_HPP_ */

include/boost/process/v1/detail/posix/exe.hpp

@@ -0,0 +1,39 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_EXE_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_EXE_HPP_
+
+#include <boost/process/v1/detail/config.hpp>
+
+namespace boost
+{
+namespace process
+{
+BOOST_PROCESS_V1_INLINE namespace v1
+{
+namespace detail
+{
+namespace posix
+{
+
+template<class StringType, class Executor>
+inline void apply_exe(const StringType & exe, Executor & e)
+{
+    e.exe = exe.c_str();
+}
+
+}
+
+
+
+}
+}
+}
+}
+
+
+#endif /* INCLUDE_BOOST_PROCESS_WINDOWS_ARGS_HPP_ */

include/boost/process/v1/detail/posix/executor.hpp

@@ -0,0 +1,573 @@
+// 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_DETAIL_POSIX_EXECUTOR_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_EXECUTOR_HPP
+
+#include <boost/process/v1/detail/child_decl.hpp>
+#include <boost/process/v1/error.hpp>
+#include <boost/process/v1/pipe.hpp>
+#include <boost/process/v1/detail/posix/basic_pipe.hpp>
+#include <boost/process/v1/detail/posix/use_vfork.hpp>
+#include <boost/fusion/algorithm/iteration/for_each.hpp>
+#include <cstdlib>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include <boost/algorithm/string/predicate.hpp>
+#include <boost/algorithm/string/split.hpp>
+#include <boost/algorithm/string/classification.hpp>
+
+#include <boost/core/ignore_unused.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+template<typename Executor>
+struct on_setup_t
+{
+    Executor & exec;
+    on_setup_t(Executor & exec) : exec(exec) {};
+    template<typename T>
+    void operator()(T & t) const
+    {
+        if (!exec.error())
+            t.on_setup(exec);
+    }
+};
+
+template<typename Executor>
+struct on_error_t
+{
+    Executor & exec;
+    const std::error_code & error;
+    on_error_t(Executor & exec, const std::error_code & error) : exec(exec), error(error) {};
+    template<typename T>
+    void operator()(T & t) const
+    {
+        t.on_error(exec, error);
+    }
+};
+
+template<typename Executor>
+struct on_success_t
+{
+    Executor & exec;
+    on_success_t(Executor & exec) : exec(exec) {};
+    template<typename T>
+    void operator()(T & t) const {t.on_success(exec);}
+};
+
+
+
+template<typename Executor>
+struct on_fork_error_t
+{
+    Executor & exec;
+    const std::error_code & error;
+    on_fork_error_t(Executor & exec, const std::error_code & error) : exec(exec), error(error) {};
+
+    template<typename T>
+    void operator()(T & t) const
+    {
+        t.on_fork_error(exec, error);
+    }
+};
+
+
+template<typename Executor>
+struct on_exec_setup_t
+{
+    Executor & exec;
+    on_exec_setup_t(Executor & exec) : exec(exec) {};
+
+    template<typename T>
+    void operator()(T & t) const
+    {
+        t.on_exec_setup(exec);
+    }
+};
+
+
+template<typename Executor>
+struct on_exec_error_t
+{
+    Executor & exec;
+    const std::error_code &ec;
+    on_exec_error_t(Executor & exec, const std::error_code & error) : exec(exec), ec(error) {};
+
+    template<typename T>
+    void operator()(T & t) const
+    {
+        t.on_exec_error(exec, ec);
+    }
+};
+
+template<typename Executor>
+struct on_fork_success_t
+{
+    Executor & exec;
+    on_fork_success_t(Executor & exec) : exec(exec) {};
+
+    template<typename T>
+    void operator()(T & t) const
+    {
+        t.on_fork_success(exec);
+    }
+};
+
+template<typename Executor> on_setup_t  <Executor> call_on_setup  (Executor & exec) {return exec;}
+template<typename Executor> on_error_t  <Executor> call_on_error  (Executor & exec, const std::error_code & ec)
+{
+    return on_error_t<Executor> (exec, ec);
+}
+template<typename Executor> on_success_t<Executor> call_on_success(Executor & exec) {return exec;}
+
+template<typename Executor> on_fork_error_t  <Executor> call_on_fork_error  (Executor & exec, const std::error_code & ec)
+{
+    return on_fork_error_t<Executor> (exec, ec);
+}
+
+
+template<typename Executor> on_exec_setup_t  <Executor> call_on_exec_setup  (Executor & exec) {return exec;}
+template<typename Executor> on_exec_error_t  <Executor> call_on_exec_error  (Executor & exec, const std::error_code & ec)
+{
+    return on_exec_error_t<Executor> (exec, ec);
+}
+
+
+template<typename Sequence>
+class executor
+{
+    template<typename HasHandler, typename UseVFork>
+    void internal_error_handle(const std::error_code&, const char*, HasHandler, boost::mpl::true_, UseVFork) {}
+
+    int _pipe_sink = -1;
+
+
+    void write_error(const std::error_code & ec, const char * msg)
+    {
+        //I am the child
+        const auto len = static_cast<int>(std::strlen(msg));
+        int data[2] = {ec.value(), len + 1};
+
+        boost::ignore_unused(::write(_pipe_sink, &data[0], sizeof(int) * 2));
+        boost::ignore_unused(::write(_pipe_sink, msg, len));
+    }
+
+    void internal_error_handle(const std::error_code &ec, const char* msg, boost::mpl::true_ , boost::mpl::false_, boost::mpl::false_)
+    {
+        if (this->pid == 0) //on the fork.
+            write_error(ec, msg);
+        else
+        {
+            this->_ec  = ec;
+            this->_msg = msg;
+        }
+    }
+    void internal_error_handle(const std::error_code &ec, const char* msg, boost::mpl::false_, boost::mpl::false_, boost::mpl::false_)
+    {
+        if (this->pid == 0)
+            write_error(ec, msg);
+        else
+            throw process_error(ec, msg);
+    }
+
+
+    void internal_error_handle(const std::error_code &ec, const char* msg, boost::mpl::true_ , boost::mpl::false_, boost::mpl::true_)
+    {
+        this->_ec  = ec;
+        this->_msg = msg;
+    }
+    void internal_error_handle(const std::error_code &ec, const char* msg, boost::mpl::false_, boost::mpl::false_, boost::mpl::true_)
+    {
+        if (this->pid == 0)
+        {
+            this->_ec  = ec;
+            this->_msg = msg;
+        }
+        else
+            throw process_error(ec, msg);
+    }
+
+    void check_error(boost::mpl::true_) {};
+    void check_error(boost::mpl::false_)
+    {
+        if (_ec)
+            throw process_error(_ec, _msg);
+    }
+
+    typedef typename ::boost::process::v1::detail::has_error_handler<Sequence>::type has_error_handler;
+    typedef typename ::boost::process::v1::detail::has_ignore_error <Sequence>::type has_ignore_error;
+    typedef typename ::boost::process::v1::detail::posix::shall_use_vfork<Sequence>::type shall_use_vfork;
+
+    inline child invoke(boost::mpl::true_ , boost::mpl::true_ );
+    inline child invoke(boost::mpl::false_, boost::mpl::true_ );
+    inline child invoke(boost::mpl::true_ , boost::mpl::false_ );
+    inline child invoke(boost::mpl::false_, boost::mpl::false_ );
+    void _write_error(int sink)
+    {
+        int data[2] = {_ec.value(),static_cast<int>(_msg.size())};
+        while (::write(sink, &data[0], sizeof(int) *2) == -1)
+        {
+            auto err = errno;
+
+            if (err == EBADF)
+                return;
+            else if ((err != EINTR) && (err != EAGAIN))
+                break;
+        }
+        while (::write(sink, &_msg.front(), _msg.size()) == -1)
+        {
+            auto err = errno;
+
+            if (err == EBADF)
+                return;
+            else if ((err != EINTR) && (err != EAGAIN))
+                break;
+        }
+    }
+
+    void _read_error(int source)
+    {
+        int data[2];
+
+        _ec.clear();
+        int count = 0;
+        while ((count = ::read(source, &data[0], sizeof(int) *2 ) ) == -1)
+        {
+            //actually, this should block until it's read.
+            auto err = errno;
+            if ((err != EAGAIN ) && (err != EINTR))
+                set_error(std::error_code(err, std::system_category()), "Error read pipe");
+        }
+        if (count == 0)
+            return  ;
+
+        std::error_code ec(data[0], std::system_category());
+        std::string msg(data[1], ' ');
+
+        while (::read(source, &msg.front(), msg.size() ) == -1)
+        {
+            //actually, this should block until it's read.
+            auto err = errno;
+            if ((err == EBADF) || (err == EPERM))//that should occur on success, therefore return.
+                return;
+                //EAGAIN not yet forked, EINTR interrupted, i.e. try again
+            else if ((err != EAGAIN ) && (err != EINTR))
+                set_error(std::error_code(err, std::system_category()), "Error read pipe");
+        }
+        set_error(ec, std::move(msg));
+    }
+
+    std::string prepare_cmd_style_fn; //buffer
+
+    inline void prepare_cmd_style() //this does what execvpe does - but we execute it in the father process, to avoid allocations.
+    {
+        //use my own implementation
+        prepare_cmd_style_fn = exe;
+        if ((prepare_cmd_style_fn.find('/') == std::string::npos) && ::access(prepare_cmd_style_fn.c_str(), X_OK))
+        {
+            const auto * e = environ;
+            while ((e != nullptr) && (*e != nullptr) && !boost::starts_with(*e, "PATH="))
+                e++;
+
+            if ((e != nullptr) && (*e != nullptr))
+            {
+                std::vector<std::string> path;
+                //the beginning of the string contains "PATH="
+                boost::split(path, (*e) + 5, boost::is_any_of(":"));
+
+                for (const std::string & pp : path)
+                {
+                    auto p = pp + "/" + exe;
+                    if (!::access(p.c_str(), X_OK))
+                    {
+                        prepare_cmd_style_fn = p;
+                        break;
+                    }
+                }
+            }
+        }
+        exe = prepare_cmd_style_fn.c_str();
+    }
+
+    std::error_code _ec;
+    std::string _msg;
+public:
+    executor(Sequence & seq) : seq(seq)
+    {
+    }
+
+    child operator()()
+    {
+        return invoke(has_ignore_error(), shall_use_vfork());
+    }
+
+
+    Sequence & seq;
+    const char * exe      = nullptr;
+    char *const* cmd_line = nullptr;
+    bool cmd_style = false;
+    char **env      = environ;
+    pid_t pid = -1;
+    std::shared_ptr<std::atomic<int>> exit_status = std::make_shared<std::atomic<int>>(still_active);
+
+    const std::error_code & error() const {return _ec;}
+
+    void set_error(const std::error_code &ec, const char* msg)
+    {
+        internal_error_handle(ec, msg, has_error_handler(), has_ignore_error(), shall_use_vfork());
+    }
+    void set_error(const std::error_code &ec, const std::string &msg) {set_error(ec, msg.c_str());};
+
+    std::vector<int> get_used_handles() const 
+    {
+        if (_pipe_sink == -1)
+            return {};
+        else
+            return {_pipe_sink};
+    };
+};
+
+template<typename Sequence>
+child executor<Sequence>::invoke(boost::mpl::true_, boost::mpl::false_) //ignore errors
+{
+    boost::fusion::for_each(seq, call_on_setup(*this));
+    if (_ec)
+        return child();
+    if (cmd_style)
+        prepare_cmd_style();
+
+    this->pid = ::fork();
+    if (pid == -1)
+    {
+        auto ec = boost::process::v1::detail::get_last_error();
+        boost::fusion::for_each(seq, call_on_fork_error(*this, ec));
+        return child();
+    }
+    else if (pid == 0)
+    {
+        boost::fusion::for_each(seq, call_on_exec_setup(*this));
+        ::execve(exe, cmd_line, env);
+        auto ec = boost::process::v1::detail::get_last_error();
+        boost::fusion::for_each(seq, call_on_exec_error(*this, ec));
+        _exit(EXIT_FAILURE);
+    }
+
+    child c(child_handle(pid), exit_status);
+
+    boost::fusion::for_each(seq, call_on_success(*this));
+
+    return c;
+}
+
+template<typename Sequence>
+child executor<Sequence>::invoke(boost::mpl::false_, boost::mpl::false_)
+{
+    {
+        struct pipe_guard
+        {
+            int p[2];
+            pipe_guard() : p{-1,-1} {}
+
+            ~pipe_guard()
+            {
+                if (p[0] != -1)
+                    ::close(p[0]);
+                if (p[1] != -1)
+                    ::close(p[1]);
+            }
+        } p{};
+
+        if (::pipe(p.p) == -1)
+        {
+            set_error(::boost::process::v1::detail::get_last_error(), "pipe(2) failed");
+            return child();
+        }
+        if (::fcntl(p.p[1], F_SETFD, FD_CLOEXEC) == -1)
+        {
+            auto err = ::boost::process::v1::detail::get_last_error();
+            set_error(err, "fcntl(2) failed");//this might throw, so we need to be sure our pipe is safe.
+            return child();
+        }
+
+        _pipe_sink = p.p[1];
+
+        _ec.clear();
+        boost::fusion::for_each(seq, call_on_setup(*this));
+
+        if (_ec)
+        {
+            boost::fusion::for_each(seq, call_on_error(*this, _ec));
+            _pipe_sink = -1;
+            return child();
+        }
+
+        if (cmd_style)
+            prepare_cmd_style();
+
+        this->pid = ::fork();
+        if (pid == -1)
+        {
+            _ec = boost::process::v1::detail::get_last_error();
+            _msg = "fork() failed";
+            boost::fusion::for_each(seq, call_on_fork_error(*this, _ec));
+            boost::fusion::for_each(seq, call_on_error(*this, _ec));
+            _pipe_sink = -1;
+            return child();
+        }
+        else if (pid == 0)
+        {
+            ::close(p.p[0]);
+
+            boost::fusion::for_each(seq, call_on_exec_setup(*this));
+            ::execve(exe, cmd_line, env);
+            _ec = boost::process::v1::detail::get_last_error();
+            _msg = "execve failed";
+            boost::fusion::for_each(seq, call_on_exec_error(*this, _ec));
+
+            _write_error(_pipe_sink);
+            ::close(p.p[1]);
+
+            _exit(EXIT_FAILURE);
+            return child();
+        }
+
+        ::close(p.p[1]);
+        p.p[1] = -1;
+        _pipe_sink = -1;
+        _read_error(p.p[0]);
+
+    }
+    if (_ec)
+    {
+        //if an error occurred we need to reap the child process
+        ::waitpid(this->pid, nullptr, WNOHANG);
+        boost::fusion::for_each(seq, call_on_error(*this, _ec));
+        return child();
+    }
+
+    child c(child_handle(pid), exit_status);
+
+    boost::fusion::for_each(seq, call_on_success(*this));
+
+    if (_ec)
+    {
+        boost::fusion::for_each(seq, call_on_error(*this, _ec));
+        return child();
+    }
+
+    return c;
+}
+
+#if BOOST_POSIX_HAS_VFORK
+
+
+template<typename Sequence>
+child executor<Sequence>::invoke(boost::mpl::true_, boost::mpl::true_) //ignore errors
+{
+    boost::fusion::for_each(seq, call_on_setup(*this));
+    if (_ec)
+        return child();
+    this->pid = ::vfork();
+    if (pid == -1)
+    {
+        auto ec = boost::process::v1::detail::get_last_error();
+        boost::fusion::for_each(seq, call_on_fork_error(*this, ec));
+        return child();
+    }
+    else if (pid == 0)
+    {
+        boost::fusion::for_each(seq, call_on_exec_setup(*this));
+        ::execve(exe, cmd_line, env);
+        auto ec = boost::process::v1::detail::get_last_error();
+        boost::fusion::for_each(seq, call_on_exec_error(*this, ec));
+        _exit(EXIT_FAILURE);
+    }
+    child c(child_handle(pid), exit_status);
+
+    boost::fusion::for_each(seq, call_on_success(*this));
+
+    return c;
+}
+
+template<typename Sequence>
+child executor<Sequence>::invoke(boost::mpl::false_, boost::mpl::true_)
+{
+    boost::fusion::for_each(seq, call_on_setup(*this));
+
+    if (_ec)
+    {
+        boost::fusion::for_each(seq, call_on_error(*this, _ec));
+        return child();
+    }
+    _ec.clear();
+    if (cmd_style)
+        this->prepare_cmd_style();
+
+    this->pid = ::vfork();
+    if (pid == -1)
+    {
+        _ec = boost::process::v1::detail::get_last_error();
+        _msg = "fork() failed";
+        boost::fusion::for_each(seq, call_on_fork_error(*this, _ec));
+        boost::fusion::for_each(seq, call_on_error(*this, _ec));
+
+        return child();
+    }
+    else if (pid == 0)
+    {
+        boost::fusion::for_each(seq, call_on_exec_setup(*this));
+
+        ::execve(exe, cmd_line, env);
+
+        _ec = boost::process::v1::detail::get_last_error();
+        _msg = "execve failed";
+        boost::fusion::for_each(seq, call_on_exec_error(*this, _ec));
+
+        _exit(EXIT_FAILURE);
+        return child();
+    }
+    child c(child_handle(pid), exit_status);
+
+    check_error(has_error_handler());
+
+
+
+    if (_ec)
+    {
+        ::waitpid(this->pid, nullptr, WNOHANG);
+        boost::fusion::for_each(seq, call_on_error(*this, _ec));
+        return child();
+    }
+    else
+        boost::fusion::for_each(seq, call_on_success(*this));
+
+    if (_ec)
+    {
+        boost::fusion::for_each(seq, call_on_error(*this, _ec));
+        return child();
+    }
+
+    return c;
+}
+
+#endif
+
+template<typename Char, typename Tup>
+inline executor<Tup> make_executor(Tup & tup)
+{
+    return executor<Tup>(tup);
+}
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/fd.hpp

@@ -0,0 +1,102 @@
+// 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_DETAIL_POSIX_FD_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_FD_HPP
+
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <unistd.h>
+#include <boost/process/v1/detail/used_handles.hpp>
+#include <array>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+
+struct close_fd_ : handler_base_ext, ::boost::process::v1::detail::uses_handles
+{
+    close_fd_(int fd) : fd_(fd) {}
+
+    template <class PosixExecutor>
+    void on_exec_setup(PosixExecutor& e) const
+    {
+        if (::close(fd_) == -1)
+            e.set_error(::boost::process::v1::detail::get_last_error(), "close() failed");
+    }
+
+    int get_used_handles() {return fd_;}
+
+
+private:
+    int fd_;
+};
+
+template <class Range>
+struct close_fds_ : handler_base_ext, ::boost::process::v1::detail::uses_handles
+{
+public:
+    close_fds_(const Range &fds) : fds_(fds) {}
+
+    template <class PosixExecutor>
+    void on_exec_setup(PosixExecutor& e) const
+    {
+        for (auto & fd_ : fds_)
+            if (::close(fd_) == -1)
+            {
+                 e.set_error(::boost::process::v1::detail::get_last_error(), "close() failed");
+                 break;
+            }
+    }
+
+    Range& get_used_handles() {return fds_;}
+
+private:
+    Range fds_;
+};
+
+
+
+template <class FileDescriptor>
+struct bind_fd_ : handler_base_ext, ::boost::process::v1::detail::uses_handles
+{
+public:
+    bind_fd_(int id, const FileDescriptor &fd) : id_(id), fd_(fd) {}
+
+    template <class PosixExecutor>
+    void on_exec_setup(PosixExecutor& e) const
+    {
+        if (::dup2(fd_, id_) == -1)
+             e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+    }
+
+    std::array<int, 2> get_used_handles() {return {id_, fd_};}
+
+
+private:
+    int id_;
+    FileDescriptor fd_;
+};
+
+
+struct fd_
+{
+    constexpr fd_() {};
+    close_fd_ close(int _fd) const {return close_fd_(_fd);}
+    close_fds_<std::vector<int>> close(const std::initializer_list<int> & vec) const {return std::vector<int>(vec);}
+    template<typename Range>
+    close_fds_<Range> close(const Range & r) const {return r;}
+
+    template <class FileDescriptor>
+    bind_fd_<FileDescriptor> bind(int id, const FileDescriptor & fd) const {return {id, fd};}
+
+};
+
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/file_descriptor.hpp

@@ -0,0 +1,89 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_FILE_DESCRIPTOR_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_FILE_DESCRIPTOR_HPP_
+
+#include <fcntl.h>
+#include <string>
+#include <boost/process/v1/filesystem.hpp>
+#include <boost/core/exchange.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+struct file_descriptor
+{
+    enum mode_t
+    {
+        read  = 1,
+        write = 2,
+        read_write = 3
+    };
+
+
+    file_descriptor() = default;
+    explicit file_descriptor(const boost::process::v1::filesystem::path& p, mode_t mode = read_write)
+        : file_descriptor(p.native(), mode)
+    {
+    }
+
+    explicit file_descriptor(const std::string & path , mode_t mode = read_write)
+        : file_descriptor(path.c_str(), mode) {}
+
+
+    explicit file_descriptor(const char*    path, mode_t mode = read_write)
+        : _handle(create_file(path, mode))
+    {
+
+    }
+
+    file_descriptor(const file_descriptor & ) = delete;
+    file_descriptor(file_descriptor &&other)
+        : _handle(boost::exchange(other._handle, -1))
+    {
+    }
+
+    file_descriptor& operator=(const file_descriptor & ) = delete;
+    file_descriptor& operator=(file_descriptor &&other)
+    {
+        if (this != &other)
+        {
+            if (_handle != -1)
+                ::close(_handle);
+            _handle = boost::exchange(other._handle, -1);
+        }
+        return *this;
+    }
+
+    ~file_descriptor()
+    {
+        if (_handle != -1)
+            ::close(_handle);
+    }
+
+    int handle() const { return _handle;}
+
+private:
+    static int create_file(const char* name, mode_t mode )
+    {
+        switch(mode)
+        {
+        case read:
+            return ::open(name, O_RDONLY);
+        case write:
+            return ::open(name, O_WRONLY | O_CREAT, 0660);
+        case read_write:
+            return ::open(name, O_RDWR | O_CREAT, 0660);
+        default:
+            return -1;
+        }
+    }
+
+    int _handle = -1;
+};
+
+}}}}}
+
+#endif /* BOOST_PROCESS_DETAIL_WINDOWS_FILE_DESCRIPTOR_HPP_ */

include/boost/process/v1/detail/posix/file_in.hpp

@@ -0,0 +1,46 @@
+// 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_DETAIL_POSIX_FILE_IN_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_FILE_IN_HPP
+
+#include <boost/process/v1/pipe.hpp>
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <boost/process/v1/detail/posix/file_descriptor.hpp>
+#include <boost/process/v1/detail/used_handles.hpp>
+#include <cstdio>
+#include <unistd.h>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+struct file_in : handler_base_ext, ::boost::process::v1::detail::uses_handles
+{
+    file_descriptor file;
+    int handle = file.handle();
+
+    std::array<int, 2> get_used_handles()
+    {
+        return {{STDIN_FILENO, handle}};
+    }
+
+    template<typename T>
+    file_in(T&& t) : file(std::forward<T>(t)) {}
+    file_in(FILE * f) : handle(fileno(f)) {}
+
+    template <class WindowsExecutor>
+    void on_exec_setup(WindowsExecutor &e) const
+    {
+        if (::dup2(handle, STDIN_FILENO) == -1)
+             e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+    }
+};
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/file_out.hpp

@@ -0,0 +1,73 @@
+// 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
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_POSIX_FILE_OUT_HPP
+#define BOOST_PROCESS_POSIX_FILE_OUT_HPP
+
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <boost/process/v1/detail/posix/file_descriptor.hpp>
+#include <boost/process/v1/detail/used_handles.hpp>
+#include <unistd.h>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+template<int p1, int p2>
+struct file_out : handler_base_ext, ::boost::process::v1::detail::uses_handles
+{
+    file_descriptor file;
+    int handle = file.handle();
+
+    template<typename T>
+    file_out(T&& t) : file(std::forward<T>(t), file_descriptor::write), handle(file.handle()) {}
+    file_out(FILE * f) : handle(fileno(f)) {}
+
+    std::array<int, 3> get_used_handles()
+    {
+        const auto pp1 = p1 != -1 ? p1 : p2;
+        const auto pp2 = p2 != -1 ? p2 : p1;
+
+        return {handle, pp1, pp2};
+    }
+
+    template <typename Executor>
+    void on_exec_setup(Executor &e) const;
+};
+
+template<>
+template<typename Executor>
+void file_out<1,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(handle, STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+}
+
+template<>
+template<typename Executor>
+void file_out<2,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(handle, STDERR_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+}
+
+template<>
+template<typename Executor>
+void file_out<1,2>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(handle, STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+
+    if (::dup2(handle, STDERR_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+
+}
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/group_handle.hpp

@@ -0,0 +1,94 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_GROUP_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_GROUP_HPP_
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/detail/posix/child_handle.hpp>
+#include <system_error>
+#include <unistd.h>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+struct group_handle
+{
+    pid_t grp = -1;
+
+    typedef pid_t handle_t;
+    handle_t handle() const { return grp; }
+
+    explicit group_handle(handle_t h) :
+        grp(h)
+    {
+    }
+
+     group_handle() = default;
+
+    ~group_handle() = default;
+    group_handle(const group_handle & c) = delete;
+    group_handle(group_handle && c) : grp(c.grp)
+    {
+        c.grp = -1;
+    }
+    group_handle &operator=(const group_handle & c) = delete;
+    group_handle &operator=(group_handle && c)
+    {
+        grp = c.grp;
+        c.grp = -1;
+        return *this;
+    }
+
+    void add(handle_t proc)
+    {
+        if (::setpgid(proc, grp))
+            throw_last_error();
+    }
+    void add(handle_t proc, std::error_code & ec) noexcept
+    {
+        if (::setpgid(proc, grp))
+            ec = get_last_error();
+    }
+
+    bool has(handle_t proc)
+    {
+        return ::getpgid(proc) == grp;
+    }
+    bool has(handle_t proc, std::error_code &) noexcept
+    {
+        return ::getpgid(proc) == grp;
+    }
+
+    bool valid() const
+    {
+        return grp != -1;
+    }
+};
+
+inline  void terminate(group_handle &p, std::error_code &ec) noexcept
+{
+    if (::killpg(p.grp, SIGKILL) == -1)
+        ec = boost::process::v1::detail::get_last_error();
+    else
+        ec.clear();
+
+    p.grp = -1;
+}
+
+inline void terminate(group_handle &p)
+{
+    std::error_code ec;
+    terminate(p, ec);
+    boost::process::v1::detail::throw_error(ec, "killpg(2) failed in terminate");
+}
+
+inline bool in_group()
+{
+    return true;
+}
+
+}}}}}
+
+#endif /* BOOST_PROCESS_DETAIL_WINDOWS_GROUP_HPP_ */

include/boost/process/v1/detail/posix/group_ref.hpp

@@ -0,0 +1,52 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_GROUP_REF_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_GROUP_REF_HPP_
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/detail/posix/group_handle.hpp>
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <unistd.h>
+
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 {
+
+namespace detail { namespace posix {
+
+
+
+struct group_ref : handler_base_ext
+{
+    group_handle & grp;
+
+
+    explicit group_ref(group_handle & g) :
+                grp(g)
+    {}
+
+    template <class Executor>
+    void on_exec_setup(Executor&) const
+    {
+        if (grp.grp == -1)
+            ::setpgid(0, 0);
+        else
+            ::setpgid(0, grp.grp);
+    }
+
+    template <class Executor>
+    void on_success(Executor& exec) const
+    {
+        if (grp.grp == -1)
+            grp.grp = exec.pid;
+
+    }
+
+};
+
+}}}}}
+
+
+#endif /* BOOST_PROCESS_DETAIL_POSIX_GROUP_REF_HPP_ */

include/boost/process/v1/detail/posix/handler.hpp

@@ -0,0 +1,74 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_HANDLER_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_HANDLER_HPP_
+
+#include <boost/process/v1/detail/handler_base.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+//does not extend anything.
+struct handler_base_ext : handler_base 
+{
+    template<typename Executor>
+    void on_fork_error  (Executor &, const std::error_code&) const {}
+
+    template<typename Executor>
+    void on_exec_setup  (Executor &) const {}
+
+    template<typename Executor>
+    void on_exec_error  (Executor &, const std::error_code&) const {}
+};
+
+
+template <class Handler>
+struct on_fork_error_ : handler_base_ext
+{
+    explicit on_fork_error_(Handler handler) : handler_(handler) {}
+
+    template <class Executor>
+    void on_fork_error(Executor &e, const std::error_code &ec) const
+    {
+        handler_(e, ec);
+    }
+private:
+    Handler handler_;
+};
+
+
+template <class Handler>
+struct on_exec_setup_ : handler_base_ext
+{
+    explicit on_exec_setup_(Handler handler) : handler_(handler) {}
+
+    template <class Executor>
+    void on_exec_setup(Executor &e) const
+    {
+        handler_(e);
+    }
+private:
+    Handler handler_;
+};
+
+template <class Handler>
+struct on_exec_error_ : handler_base_ext
+{
+    explicit on_exec_error_(Handler handler) : handler_(handler) {}
+
+    template <class Executor>
+    void on_exec_error(Executor &e, const std::error_code &ec) const
+    {
+        handler_(e, ec);
+    }
+private:
+    Handler handler_;
+};
+
+}}}}}
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_POSIX_HANDLER_HPP_ */

include/boost/process/v1/detail/posix/handles.hpp

@@ -0,0 +1,148 @@
+// Copyright (c) 2019 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_HANDLES_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_HANDLES_HPP_
+
+#include <vector>
+#include <system_error>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <algorithm>
+#include <memory>
+#include <cstdlib>
+#include <boost/process/v1/detail/posix/handler.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+
+using native_handle_type = int;
+
+inline std::vector<native_handle_type> get_handles(std::error_code & ec)
+{
+    std::vector<native_handle_type> res;
+
+    std::unique_ptr<DIR, void(*)(DIR*)> dir{::opendir("/dev/fd"), +[](DIR* p){::closedir(p);}};
+    if (!dir)
+    {
+        ec = ::boost::process::v1::detail::get_last_error();
+        return {};
+    }
+    else
+        ec.clear();
+
+    auto my_fd = dirfd(dir.get());
+
+    struct ::dirent * ent_p;
+
+    while ((ent_p = readdir(dir.get())) != nullptr)
+    {
+        if (ent_p->d_name[0] == '.')
+            continue;
+
+        const auto conv = std::atoi(ent_p->d_name);
+        if (conv == 0 && (ent_p->d_name[0] != '0' && ent_p->d_name[1] != '\0'))
+            continue;
+
+        if (conv == my_fd)
+            continue;
+
+        res.push_back(conv);
+    }
+    return res;
+}
+
+inline std::vector<native_handle_type> get_handles()
+{
+    std::error_code ec;
+
+    auto res = get_handles(ec);
+    if (ec)
+        boost::process::v1::detail::throw_error(ec, "open_dir(\"/dev/fd\") failed");
+
+    return res;
+}
+
+
+inline bool is_stream_handle(native_handle_type handle, std::error_code & ec)
+{
+    struct ::stat stat_;
+
+    if (::fstat(handle, &stat_) != 0)
+    {
+        ec = ::boost::process::v1::detail::get_last_error();
+    }
+    else
+        ec.clear();
+
+    return S_ISCHR  (stat_.st_mode)  //This macro returns non-zero if the file is a character special file (a device like a terminal).
+        || S_ISBLK  (stat_.st_mode) // This macro returns non-zero if the file is a block special file (a device like a disk).
+        || S_ISREG  (stat_.st_mode) // This macro returns non-zero if the file is a regular file.
+        || S_ISFIFO (stat_.st_mode) // This macro returns non-zero if the file is a FIFO special file, or a pipe. See section 15. Pipes and FIFOs.
+        || S_ISSOCK (stat_.st_mode) ;// This macro returns non-zero if the file is a socket. See section 16. Sockets.;
+}
+
+
+inline bool is_stream_handle(native_handle_type handle)
+{
+    std::error_code ec;
+    auto res = is_stream_handle(handle, ec);
+    if (ec)
+        boost::process::v1::detail::throw_error(ec, "fstat() failed");
+
+    return res;
+}
+
+struct limit_handles_ : handler_base_ext
+{
+    limit_handles_() {}
+    ~limit_handles_() {}
+    mutable std::vector<int> used_handles;
+
+    template<typename Executor>
+    void on_setup(Executor & exec) const
+    {
+        used_handles = get_used_handles(exec);
+    }
+
+    template<typename Executor>
+    void on_exec_setup(Executor & exec) const
+    {
+        auto dir = ::opendir("/dev/fd");
+        if (!dir)
+        {
+            exec.set_error(::boost::process::v1::detail::get_last_error(), "opendir(\"/dev/fd\")");
+            return;
+        }
+
+        auto my_fd = dirfd(dir);
+        struct ::dirent * ent_p;
+
+        while ((ent_p = readdir(dir)) != nullptr)
+        {
+            if (ent_p->d_name[0] == '.')
+                continue;
+
+            const auto conv = std::atoi(ent_p->d_name);
+
+            if ((conv == my_fd) || (conv == -1))
+                continue;
+
+            if (std::find(used_handles.begin(), used_handles.end(), conv) != used_handles.end())
+                continue;
+
+            if (::close(conv) != 0)
+            {
+                exec.set_error(::boost::process::v1::detail::get_last_error(), "close() failed");
+                return;
+            }
+        }
+        ::closedir(dir);
+    }
+};
+
+}}}}}
+
+#endif //PROCESS_HANDLES_HPP

include/boost/process/v1/detail/posix/io_context_ref.hpp

@@ -0,0 +1,125 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_POSIX_IO_CONTEXT_REF_HPP_
+#define BOOST_PROCESS_POSIX_IO_CONTEXT_REF_HPP_
+
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <boost/process/v1/detail/posix/async_handler.hpp>
+#include <boost/asio/io_context.hpp>
+
+#include <boost/fusion/algorithm/iteration/for_each.hpp>
+#include <boost/fusion/algorithm/transformation/filter_if.hpp>
+#include <boost/fusion/algorithm/transformation/transform.hpp>
+#include <boost/fusion/view/transform_view.hpp>
+#include <boost/fusion/container/vector/convert.hpp>
+
+
+#include <boost/process/v1/detail/posix/sigchld_service.hpp>
+#include <boost/process/v1/detail/posix/is_running.hpp>
+
+#include <functional>
+#include <type_traits>
+#include <memory>
+#include <vector>
+#include <sys/wait.h>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+template<typename Executor>
+struct on_exit_handler_transformer
+{
+    Executor & exec;
+    on_exit_handler_transformer(Executor & exec) : exec(exec) {}
+    template<typename Sig>
+    struct result;
+
+    template<typename T>
+    struct result<on_exit_handler_transformer<Executor>(T&)>
+    {
+        typedef typename T::on_exit_handler_t type;
+    };
+
+    template<typename T>
+    auto operator()(T& t) const -> typename T::on_exit_handler_t
+    {
+        return t.on_exit_handler(exec);
+    }
+};
+
+template<typename Executor>
+struct async_handler_collector
+{
+    Executor & exec;
+    std::vector<std::function<void(int, const std::error_code & ec)>> &handlers;
+
+
+    async_handler_collector(Executor & exec,
+            std::vector<std::function<void(int, const std::error_code & ec)>> &handlers)
+                : exec(exec), handlers(handlers) {}
+
+    template<typename T>
+    void operator()(T & t) const
+    {
+        handlers.push_back(t.on_exit_handler(exec));
+    }
+};
+
+//Also set's up waiting for the exit, so it can close async stuff.
+struct io_context_ref : handler_base_ext
+{
+    io_context_ref(boost::asio::io_context & ios) : ios(ios)
+    {
+
+    }
+    boost::asio::io_context &get() {return ios;};
+    
+    template <class Executor>
+    void on_success(Executor& exec)
+    {
+        ios.notify_fork(boost::asio::io_context::fork_parent);
+        //must be on the heap, so I can move it into the lambda.
+        auto asyncs = boost::fusion::filter_if<
+                        is_async_handler<
+                        typename std::remove_reference< boost::mpl::_ > ::type
+                        >>(exec.seq);
+
+        //ok, check if there are actually any.
+        if (boost::fusion::empty(asyncs))
+            return;
+
+        std::vector<std::function<void(int, const std::error_code & ec)>> funcs;
+        funcs.reserve(boost::fusion::size(asyncs));
+        boost::fusion::for_each(asyncs, async_handler_collector<Executor>(exec, funcs));
+
+        auto & es = exec.exit_status;
+
+        auto wh = [funcs, es](int val, const std::error_code & ec)
+                {
+                    es->store(val);
+                    for (auto & func : funcs)
+                        func(::boost::process::v1::detail::posix::eval_exit_status(val), ec);
+                };
+
+        sigchld_service.async_wait(exec.pid, std::move(wh));
+    }
+
+    template<typename Executor>
+    void on_setup (Executor &) const {/*ios.notify_fork(boost::asio::io_context::fork_prepare);*/}
+
+    template<typename Executor>
+    void on_exec_setup  (Executor &) const {/*ios.notify_fork(boost::asio::io_context::fork_child);*/}
+
+    template <class Executor>
+    void on_error(Executor&, const std::error_code &) const {/*ios.notify_fork(boost::asio::io_context::fork_parent);*/}
+
+private:
+    boost::asio::io_context &ios;
+    boost::process::v1::detail::posix::sigchld_service &sigchld_service = boost::asio::use_service<boost::process::v1::detail::posix::sigchld_service>(ios);
+};
+
+}}}}}
+
+#endif /* BOOST_PROCESS_WINDOWS_IO_CONTEXT_REF_HPP_ */

include/boost/process/v1/detail/posix/is_running.hpp

@@ -0,0 +1,80 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_IS_RUNNING_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_IS_RUNNING_HPP
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/detail/posix/child_handle.hpp>
+#include <system_error>
+#include <sys/wait.h>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+// Use the "stopped" state (WIFSTOPPED) to indicate "not terminated".
+// This bit arrangement of status codes is not guaranteed by POSIX, but (according to comments in
+// the glibc <bits/waitstatus.h> header) is the same across systems in practice.
+constexpr int still_active = 0x017f;
+static_assert(WIFSTOPPED(still_active), "Expected still_active to indicate WIFSTOPPED");
+static_assert(!WIFEXITED(still_active), "Expected still_active to not indicate WIFEXITED");
+static_assert(!WIFSIGNALED(still_active), "Expected still_active to not indicate WIFSIGNALED");
+static_assert(!WIFCONTINUED(still_active), "Expected still_active to not indicate WIFCONTINUED");
+
+inline bool is_running(int code)
+{
+    return !WIFEXITED(code) && !WIFSIGNALED(code);
+}
+
+inline bool is_running(const child_handle &p, int & exit_code, std::error_code &ec) noexcept
+{
+    int status;
+    auto ret = ::waitpid(p.pid, &status, WNOHANG);
+
+    if (ret == -1)
+    {
+        if (errno != ECHILD) //because it no child is running, then this one isn't either, obviously.
+            ec = ::boost::process::v1::detail::get_last_error();
+        return false;
+    }
+    else if (ret == 0)
+        return true;
+    else
+    {
+        ec.clear();
+
+        if (!is_running(status))
+            exit_code = status;
+
+        return false;
+    }
+}
+
+inline bool is_running(const child_handle &p, int & exit_code)
+{
+    std::error_code ec;
+    bool b = is_running(p, exit_code, ec);
+    boost::process::v1::detail::throw_error(ec, "waitpid(2) failed in is_running");
+    return b;
+}
+
+inline int eval_exit_status(int code)
+{
+    if (WIFEXITED(code))
+    {
+        return WEXITSTATUS(code);
+    }
+    else if (WIFSIGNALED(code))
+    {
+        return WTERMSIG(code);
+    }
+    else
+    {
+        return code;
+    }
+}
+
+}}}}}
+
+#endif

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

@@ -0,0 +1,43 @@
+// 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_DETAIL_POSIX_NULL_IN_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_NULL_IN_HPP
+
+#include <boost/process/v1/pipe.hpp>
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <boost/process/v1/detail/posix/file_descriptor.hpp>
+#include <unistd.h>
+#include <boost/process/v1/detail/used_handles.hpp>
+#include <array>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+struct null_in : handler_base_ext, ::boost::process::v1::detail::uses_handles
+{
+    file_descriptor source{"/dev/null", file_descriptor::read};
+
+    std::array<int, 2> get_used_handles()
+    {
+        return {{STDIN_FILENO, source.handle()}};
+    }
+
+
+public:
+    template <class Executor>
+    void on_exec_setup(Executor &e) const
+    {
+        if (::dup2(source.handle(), STDIN_FILENO) == -1)
+             e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+    }
+};
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/null_out.hpp

@@ -0,0 +1,68 @@
+// 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
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_POSIX_PIPE_OUT_HPP
+#define BOOST_PROCESS_POSIX_PIPE_OUT_HPP
+
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <boost/process/v1/detail/posix/file_descriptor.hpp>
+#include <boost/process/v1/detail/used_handles.hpp>
+#include <unistd.h>
+#include <array>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+template<int p1, int p2>
+struct null_out : handler_base_ext, ::boost::process::v1::detail::uses_handles
+{
+    file_descriptor sink{"/dev/null", file_descriptor::write};
+    
+    template <typename Executor>
+    void on_exec_setup(Executor &e) const;
+
+    std::array<int, 3> get_used_handles()
+    {
+        const auto pp1 = p1 != -1 ? p1 : p2;
+        const auto pp2 = p2 != -1 ? p2 : p1;
+
+        return {sink.handle(), pp1, pp2};
+    }
+};
+
+template<>
+template<typename Executor>
+void null_out<1,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink.handle(), STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+}
+
+template<>
+template<typename Executor>
+void null_out<2,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink.handle(), STDERR_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+}
+
+template<>
+template<typename Executor>
+void null_out<1,2>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink.handle(), STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+
+    if (::dup2(sink.handle(), STDERR_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+}
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/on_exit.hpp

@@ -0,0 +1,48 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_POSIX_ON_EXIT_HPP_
+#define BOOST_PROCESS_POSIX_ON_EXIT_HPP_
+
+#include <boost/asio/execution.hpp>
+#include <boost/process/v1/async.hpp>
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/detail/handler_base.hpp>
+#include <boost/process/v1/detail/posix/async_handler.hpp>
+#include <system_error>
+#include <functional>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail {
+
+template<typename Tuple>
+inline asio::io_context& get_io_context(const Tuple & tup);
+
+namespace posix {
+
+struct on_exit_ : boost::process::v1::detail::posix::async_handler
+{
+    std::function<void(int, const std::error_code&)> handler;
+    on_exit_(const std::function<void(int, const std::error_code&)> & handler) : handler(handler)
+    {
+    }
+
+    template<typename Executor>
+    std::function<void(int, const std::error_code&)> on_exit_handler(Executor& exec)
+    {
+        auto v = boost::asio::prefer(boost::process::v1::detail::get_io_context(exec.seq).get_executor(),
+                                     boost::asio::execution::outstanding_work.tracked);
+        auto handler_ = this->handler;
+        return
+            [handler_, v](int exit_code, const std::error_code & ec)
+            {
+                handler_(exit_code, ec);
+            };
+
+    }
+};
+
+
+}}}}}
+#endif /* BOOST_PROCESS_POSIX_ON_EXIT_HPP_ */

include/boost/process/v1/detail/posix/pipe_in.hpp

@@ -0,0 +1,98 @@
+// 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_POSIX_PIPE_IN_HPP
+#define BOOST_PROCESS_POSIX_PIPE_IN_HPP
+
+#include <boost/process/v1/pipe.hpp>
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <unistd.h>
+#include <boost/process/v1/detail/used_handles.hpp>
+#include <array>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+struct pipe_in : handler_base_ext, ::boost::process::v1::detail::uses_handles
+{
+    int source;
+    int sink; //opposite end
+
+    pipe_in(int sink, int source) : source(source), sink(sink) {}
+
+    std::array<int, 3> get_used_handles()
+    {
+        return {{STDIN_FILENO, source, sink}};
+    }
+
+
+    template<typename T>
+    pipe_in(T & p) : source(p.native_source()), sink(p.native_sink())
+    {
+        p.assign_source(-1);
+    }
+
+    template<typename Executor>
+    void on_error(Executor &, const std::error_code &) const
+    {
+        ::close(source);
+    }
+
+    template<typename Executor>
+    void on_success(Executor &) const
+    {
+        ::close(source);
+    }
+
+    template <class Executor>
+    void on_exec_setup(Executor &e) const
+    {
+        if (::dup2(source, STDIN_FILENO) == -1)
+             e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+        if (source != STDIN_FILENO)
+            ::close(source);
+
+        ::close(sink);
+    }
+
+};
+
+class async_pipe;
+
+struct async_pipe_in : public pipe_in
+{
+    async_pipe &pipe;
+
+    template<typename AsyncPipe>
+    async_pipe_in(AsyncPipe & p) : pipe_in(p.native_sink(), p.native_source()), pipe(p)
+    {
+    }
+
+    template<typename Pipe, typename Executor>
+    static void close(Pipe & pipe, Executor &)
+    {
+        boost::system::error_code ec;
+        std::move(pipe).source().close(ec);
+    }
+
+    template<typename Executor>
+    void on_error(Executor & exec, const std::error_code &)
+    {
+        close(pipe, exec);
+    }
+
+    template<typename Executor>
+    void on_success(Executor &exec)
+    {
+        close(pipe, exec);
+    }
+};
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/pipe_out.hpp

@@ -0,0 +1,131 @@
+// 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
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_PIPE_OUT_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_PIPE_OUT_HPP
+
+#include <boost/process/v1/pipe.hpp>
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <unistd.h>
+#include <array>
+#include <boost/process/v1/detail/used_handles.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+template<int p1, int p2>
+struct pipe_out : handler_base_ext, ::boost::process::v1::detail::uses_handles
+{
+    int sink;
+    int source; //opposite end
+
+    std::array<int, 4> get_used_handles()
+    {
+        const auto pp1 = p1 != -1 ? p1 : p2;
+        const auto pp2 = p2 != -1 ? p2 : p1;
+
+        return {source, sink, pp1, pp2};
+    }
+
+    pipe_out(int sink, int source) : sink(sink), source(source) {}
+
+    template<typename T>
+    pipe_out(T & p) : sink(p.native_sink()), source(p.native_source())
+    {
+        p.assign_sink(-1);
+    }
+
+    template<typename Executor>
+    void on_error(Executor &, const std::error_code &) const
+    {
+        ::close(sink);
+    }
+
+    template<typename Executor>
+    void on_success(Executor &) const
+    {
+        ::close(sink);
+    }
+
+    template <typename Executor>
+    void on_exec_setup(Executor &e) const;
+};
+
+template<>
+template<typename Executor>
+void pipe_out<1,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink, STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+
+    if (sink != STDOUT_FILENO)
+        ::close(sink);
+    ::close(source);
+}
+
+template<>
+template<typename Executor>
+void pipe_out<2,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink, STDERR_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+
+    if (sink != STDOUT_FILENO)
+        ::close(sink);
+    ::close(source);
+}
+
+template<>
+template<typename Executor>
+void pipe_out<1,2>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink, STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+    if (::dup2(sink, STDERR_FILENO) == -1)
+         e.set_error(::boost::process::v1::detail::get_last_error(), "dup2() failed");
+    if ((sink != STDOUT_FILENO) && (sink != STDERR_FILENO))
+        ::close(sink);
+    ::close(source);
+}
+
+class async_pipe;
+
+template<int p1, int p2>
+struct async_pipe_out : public pipe_out<p1, p2>
+{
+    async_pipe &pipe;
+    template<typename AsyncPipe>
+    async_pipe_out(AsyncPipe & p) : pipe_out<p1, p2>(p.native_sink(), p.native_source()), pipe(p)
+    {
+    }
+
+    template<typename Pipe, typename Executor>
+    static void close(Pipe & pipe, Executor &)
+    {
+        boost::system::error_code ec;
+        std::move(pipe).sink().close(ec);
+    }
+
+    template<typename Executor>
+    void on_error(Executor & exec, const std::error_code &)
+    {
+        close(pipe, exec);
+    }
+
+    template<typename Executor>
+    void on_success(Executor &exec)
+    {
+        close(pipe, exec);
+    }
+};
+
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/search_path.hpp

@@ -0,0 +1,44 @@
+// 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_POSIX_SEARCH_PATH_HPP
+#define BOOST_PROCESS_POSIX_SEARCH_PATH_HPP
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/filesystem.hpp>
+#include <boost/tokenizer.hpp>
+#include <string>
+#include <stdexcept>
+#include <stdlib.h>
+#include <unistd.h>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+inline boost::process::v1::filesystem::path search_path(
+        const boost::process::v1::filesystem::path &filename,
+        const std::vector<boost::process::v1::filesystem::path> &path)
+{
+    for (const boost::process::v1::filesystem::path & pp : path)
+    {
+        auto p = pp / filename;
+#if defined(BOOST_PROCESS_USE_STD_FS)
+        std::error_code ec;
+#else
+        boost::system::error_code ec;
+#endif
+        bool file = boost::process::v1::filesystem::is_regular_file(p, ec);
+        if (!ec && file && ::access(p.c_str(), X_OK) == 0)
+            return p;
+    }
+    return "";
+}
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/shell_path.hpp

@@ -0,0 +1,32 @@
+// 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_POSIX_SHELL_PATH_HPP
+#define BOOST_PROCESS_POSIX_SHELL_PATH_HPP
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/system/error_code.hpp>
+#include <boost/process/v1/filesystem.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+inline boost::process::v1::filesystem::path shell_path()
+{
+    return "/bin/sh";
+}
+
+inline boost::process::v1::filesystem::path shell_path(std::error_code &ec)
+{
+    ec.clear();
+    return "/bin/sh";
+}
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/sigchld_service.hpp

@@ -0,0 +1,152 @@
+// Copyright (c) 2017 Klemens D. Morgenstern
+//
+// 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_DETAIL_POSIX_SIGCHLD_SERVICE_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_SIGCHLD_SERVICE_HPP_
+
+#include <boost/asio/bind_executor.hpp>
+#include <boost/asio/dispatch.hpp>
+#include <boost/asio/post.hpp>
+#include <boost/asio/consign.hpp>
+#include <boost/asio/append.hpp>
+#include <boost/asio/signal_set.hpp>
+#include <boost/asio/strand.hpp>
+#include <boost/optional.hpp>
+#include <signal.h>
+#include <functional>
+#include <sys/wait.h>
+#include <list>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+class sigchld_service : public boost::asio::detail::service_base<sigchld_service>
+{
+    boost::asio::strand<boost::asio::io_context::executor_type> _strand{get_io_context().get_executor()};
+    boost::asio::signal_set _signal_set{get_io_context(), SIGCHLD};
+
+    std::list<std::pair<::pid_t, std::function<void(int, std::error_code)>>> _receivers;
+    inline void _handle_signal(const boost::system::error_code & ec);
+
+    struct initiate_async_wait_op
+    {
+        sigchld_service * self;
+        template<typename Initiation>
+        void operator()(Initiation && init, ::pid_t pid)
+        {
+            // check if the child actually is running first
+            int status;
+            auto pid_res = ::waitpid(pid, &status, WNOHANG);
+            if (pid_res < 0)
+            {
+                auto ec = get_last_error();
+                boost::asio::post(
+                        self->_strand,
+                        asio::append(std::forward<Initiation>(init), pid_res, ec));
+            }
+            else if ((pid_res == pid) && (WIFEXITED(status) || WIFSIGNALED(status)))
+                boost::asio::post(
+                        self->_strand,
+                        boost::asio::append(std::forward<Initiation>(init), status, std::error_code{}));
+            else //still running
+            {
+                sigchld_service * self_ = self;
+                if (self->_receivers.empty())
+                    self->_signal_set.async_wait(
+                        boost::asio::bind_executor(
+                            self->_strand,
+                            [self_](const boost::system::error_code &ec, int)
+                            {
+                                self_->_handle_signal(ec);
+                            }));
+                self->_receivers.emplace_back(pid, init);
+            }
+        }
+    };
+
+public:
+    sigchld_service(boost::asio::io_context & io_context)
+        : boost::asio::detail::service_base<sigchld_service>(io_context)
+    {
+    }
+
+    template <typename SignalHandler>
+    BOOST_ASIO_INITFN_RESULT_TYPE(SignalHandler,
+        void (int, std::error_code))
+    async_wait(::pid_t pid, SignalHandler && handler)
+    {
+        return boost::asio::async_initiate<
+            SignalHandler,
+            void(int, std::error_code)>(
+                initiate_async_wait_op{this}, handler, pid);
+    }
+    void shutdown() override
+    {
+        _receivers.clear();
+    }
+
+    void cancel()
+    {
+        _signal_set.cancel();
+    }
+    void cancel(boost::system::error_code & ec)
+    {
+        _signal_set.cancel(ec);
+    }
+};
+
+
+void sigchld_service::_handle_signal(const boost::system::error_code & ec)
+{
+    std::error_code ec_{ec.value(), std::system_category()};
+
+    if (ec_)
+    {
+        for (auto & r : _receivers)
+            r.second(-1, ec_);
+        return;
+    }
+
+    for (auto & r : _receivers) {
+        int status;
+        int pid = ::waitpid(r.first, &status, WNOHANG);
+        if (pid < 0) {
+            // error (eg: the process no longer exists)
+            r.second(-1, get_last_error());
+            r.first = 0; // mark for deletion
+        } else if (pid == r.first) {
+            r.second(status, ec_);
+            r.first = 0; // mark for deletion
+        }
+        // otherwise the process is still around
+    }
+
+    _receivers.erase(std::remove_if(_receivers.begin(), _receivers.end(),
+            [](const std::pair<::pid_t, std::function<void(int, std::error_code)>> & p)
+            {
+                return p.first == 0;
+            }),
+            _receivers.end());
+
+    if (!_receivers.empty())
+    {
+        _signal_set.async_wait(
+            [this](const boost::system::error_code & ec, int)
+            {
+                boost::asio::post(_strand, [this, ec]{this->_handle_signal(ec);});
+            });
+    }
+}
+
+
+}
+}
+}
+}
+}
+
+
+
+#endif

include/boost/process/v1/detail/posix/signal.hpp

@@ -0,0 +1,79 @@
+// 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
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_POSIX_SIGNAL_HPP
+#define BOOST_PROCESS_POSIX_SIGNAL_HPP
+
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <signal.h>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+#if defined(__GLIBC__)
+    using sighandler_t = ::sighandler_t;
+#else
+    using sighandler_t = void(*)(int);
+#endif
+
+
+struct sig_init_ : handler_base_ext
+{
+
+    sig_init_ (sighandler_t handler) : _handler(handler) {}
+
+    template <class PosixExecutor>
+    void on_exec_setup(PosixExecutor&)
+    {
+        _old = ::signal(SIGCHLD, _handler);
+    }
+
+    template <class Executor>
+    void on_error(Executor&, const std::error_code &)
+    {
+        if (!_reset)
+        {
+            ::signal(SIGCHLD, _old);
+            _reset = true;
+        }
+    }
+
+    template <class Executor>
+    void on_success(Executor&)
+    {
+        if (!_reset)
+        {
+            ::signal(SIGCHLD, _old);
+            _reset = true;
+        }
+    }
+private:
+    bool _reset = false;
+    ::boost::process::v1::detail::posix::sighandler_t _old{0};
+    ::boost::process::v1::detail::posix::sighandler_t _handler{0};
+};
+
+struct sig_
+{
+    constexpr sig_() {}
+
+    sig_init_ operator()(::boost::process::v1::detail::posix::sighandler_t h) const {return h;}
+    sig_init_ operator= (::boost::process::v1::detail::posix::sighandler_t h) const {return h;}
+    sig_init_ dfl() const {return SIG_DFL;}
+    sig_init_ ign() const {return SIG_IGN;}
+
+};
+
+
+
+
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/start_dir.hpp

@@ -0,0 +1,39 @@
+// 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_DETAIL_POSIX_START_DIR_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_START_DIR_HPP
+
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <string>
+#include <unistd.h>
+#include <boost/core/ignore_unused.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+template<typename Char>
+struct start_dir_init : handler_base_ext
+{
+    typedef Char value_type;
+    typedef std::basic_string<value_type> string_type;
+    start_dir_init(string_type s) : s_(std::move(s)) {}
+
+    template <class PosixExecutor>
+    void on_exec_setup(PosixExecutor&) const
+    {
+        boost::ignore_unused(::chdir(s_.c_str()));
+    }
+    const string_type & str() const {return s_;}
+private:
+    string_type s_;
+};
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/terminate.hpp

@@ -0,0 +1,42 @@
+// 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_DETAIL_POSIX_TERMINATE_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_TERMINATE_HPP
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/detail/posix/child_handle.hpp>
+#include <system_error>
+#include <signal.h>
+#include <sys/wait.h>
+
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+inline void terminate(const child_handle &p, std::error_code &ec) noexcept
+{
+    if (::kill(p.pid, SIGKILL) == -1)
+        ec = boost::process::v1::detail::get_last_error();
+    else
+        ec.clear();
+
+    int status;
+    ::waitpid(p.pid, &status, 0); //should not be WNOHANG, since that would allow zombies.
+}
+
+inline void terminate(const child_handle &p)
+{
+    std::error_code ec;
+    terminate(p, ec);
+    boost::process::v1::detail::throw_error(ec, "kill(2) failed");
+}
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/use_vfork.hpp

@@ -0,0 +1,33 @@
+/*
+ * use_vfork.hpp
+ *
+ *  Created on: 17.06.2016
+ *      Author: klemens
+ */
+
+#ifndef BOOST_PROCESS_DETAIL_POSIX_USE_VFORK_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_USE_VFORK_HPP_
+
+
+#include <boost/process/v1/detail/posix/handler.hpp>
+#include <boost/fusion/sequence/intrinsic/has_key.hpp>
+#include <boost/fusion/container/set/convert.hpp>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+struct use_vfork_ : handler_base_ext
+{
+    constexpr use_vfork_(){};
+};
+
+template<typename Sequence>
+struct shall_use_vfork
+{
+    typedef typename boost::fusion::result_of::as_set<Sequence>::type set_type;
+    typedef typename boost::fusion::result_of::has_key<set_type, const use_vfork_&>::type type;
+};
+
+
+}}}}}
+
+#endif /* BOOST_PROCESS_DETAIL_POSIX_USE_VFORK_HPP_ */

include/boost/process/v1/detail/posix/wait_for_exit.hpp

@@ -0,0 +1,241 @@
+// 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_DETAIL_POSIX_WAIT_FOR_EXIT_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_WAIT_FOR_EXIT_HPP
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/detail/posix/child_handle.hpp>
+#include <system_error>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+inline void wait(const child_handle &p, int & exit_code, std::error_code &ec) noexcept
+{
+    pid_t ret;
+    int status;
+
+    do
+    {
+        ret = ::waitpid(p.pid, &status, 0);
+    } 
+    while (((ret == -1) && (errno == EINTR)) || 
+           (ret != -1 && !WIFEXITED(status) && !WIFSIGNALED(status)));
+
+    if (ret == -1)
+        ec = boost::process::v1::detail::get_last_error();
+    else
+    {
+        ec.clear();
+        exit_code = status;
+    }
+}
+
+inline void wait(const child_handle &p, int & exit_code) noexcept
+{
+    std::error_code ec;
+    wait(p, exit_code, ec);
+    boost::process::v1::detail::throw_error(ec, "waitpid(2) failed in wait");
+}
+
+template< class Clock, class Duration >
+inline bool wait_until(
+        const child_handle &p,
+        int & exit_code,
+        const std::chrono::time_point<Clock, Duration>& time_out,
+        std::error_code & ec) noexcept
+{
+    ::sigset_t  sigset;
+
+    //I need to set the signal, because it might be ignore / default, in which case sigwait might not work.
+
+    using _signal_t = void(*)(int);
+    static thread_local _signal_t sigchld_handler = SIG_DFL;
+
+    struct signal_interceptor_t
+    {
+        static void handler_func(int val)
+        {
+            if ((sigchld_handler != SIG_DFL) && (sigchld_handler != SIG_IGN))
+                sigchld_handler(val);
+        }
+        signal_interceptor_t()  { sigchld_handler = ::signal(SIGCHLD, &handler_func); }
+        ~signal_interceptor_t() { ::signal(SIGCHLD, sigchld_handler); sigchld_handler = SIG_DFL;}
+
+    } signal_interceptor{};
+
+    if (sigemptyset(&sigset) != 0)
+    {
+        ec = get_last_error();
+        return false;
+    }
+    if (sigaddset(&sigset, SIGCHLD) != 0)
+    {
+        ec = get_last_error();
+        return false;
+    }
+
+    auto get_timespec = 
+            [](const Duration & dur)
+            {
+                ::timespec ts;
+                ts.tv_sec  = std::chrono::duration_cast<std::chrono::seconds>(dur).count();
+                ts.tv_nsec = std::chrono::duration_cast<std::chrono::nanoseconds>(dur).count() % 1000000000;
+                return ts;
+            };
+
+    int ret;
+    int status{0};
+
+    struct ::sigaction old_sig;
+    if (-1 == ::sigaction(SIGCHLD, nullptr, &old_sig))
+    {
+        ec = get_last_error();
+        return false;
+    }
+
+    bool timed_out;
+
+#if defined(BOOST_POSIX_HAS_SIGTIMEDWAIT)
+    do
+    {
+        auto ts = get_timespec(time_out - Clock::now());
+        auto ret_sig = ::sigtimedwait(&sigset, nullptr, &ts);
+        errno = 0;
+        ret = ::waitpid(p.pid, &status, WNOHANG);
+
+        if ((ret_sig == SIGCHLD) && (old_sig.sa_handler != SIG_DFL) && (old_sig.sa_handler != SIG_IGN))
+            old_sig.sa_handler(ret);
+
+        if (ret == 0)
+        {
+            timed_out = Clock::now() >= time_out;
+            if (timed_out)
+                return false;
+        }
+    }
+    while ((ret == 0) ||
+          (((ret == -1) && errno == EINTR) ||
+           ((ret != -1) && !WIFEXITED(status) && !WIFSIGNALED(status))));
+#else
+    //if we do not have sigtimedwait, we fork off a child process  to get the signal in time
+    pid_t timeout_pid = ::fork();
+    if (timeout_pid  == -1)
+    {
+        ec = boost::process::v1::detail::get_last_error();
+        return true;
+    }
+    else if (timeout_pid == 0)
+    {
+        auto ts = get_timespec(time_out - Clock::now());
+        ::timespec rem;
+        while (ts.tv_sec > 0 || ts.tv_nsec > 0)
+        {
+            if (::nanosleep(&ts, &rem) != 0)
+            {
+                auto err = errno;
+                if ((err == EINVAL) || (err == EFAULT))
+                    break;
+            }
+            ts = get_timespec(time_out - Clock::now());
+        }
+        ::exit(0);
+    }
+
+    struct child_cleaner_t
+    {
+        pid_t pid;
+        ~child_cleaner_t()
+        {
+            int res;
+            ::kill(pid, SIGKILL);
+            ::waitpid(pid, &res, 0);
+        }
+    };
+    child_cleaner_t child_cleaner{timeout_pid};
+
+    do
+    {
+        int sig_{0};
+        if ((::waitpid(timeout_pid, &status, WNOHANG) != 0)
+            && (WIFEXITED(status) || WIFSIGNALED(status)))
+
+            return false;
+
+        ret = ::sigwait(&sigset, &sig_);
+        errno = 0;
+
+        if ((sig_ == SIGCHLD) &&
+            (old_sig.sa_handler != SIG_DFL) && (old_sig.sa_handler != SIG_IGN))
+            old_sig.sa_handler(ret);
+
+        ret = ::waitpid(p.pid, &status, WNOHANG);
+        if (ret == 0) // == > is running
+        {
+            timed_out = Clock::now() >= time_out;
+            if (timed_out)
+                return false;
+        }
+    }
+    while ((ret == 0) ||
+           (((ret == -1) && errno == EINTR) ||
+            ((ret != -1) && !WIFEXITED(status) && !WIFSIGNALED(status))));
+#endif
+
+    if (ret == -1)
+        ec = boost::process::v1::detail::get_last_error();
+    else
+    {
+        ec.clear();
+        exit_code = status;
+    }
+
+    return true;
+}
+
+template< class Clock, class Duration >
+inline bool wait_until(
+        const child_handle &p,
+        int & exit_code,
+        const std::chrono::time_point<Clock, Duration>& time_out)
+{
+    std::error_code ec;
+    bool b = wait_until(p, exit_code, time_out, ec);
+    boost::process::v1::detail::throw_error(ec, "waitpid(2) failed in wait_until");
+    return b;
+}
+
+template< class Rep, class Period >
+inline bool wait_for(
+        const child_handle &p,
+        int & exit_code,
+        const std::chrono::duration<Rep, Period>& rel_time,
+        std::error_code & ec) noexcept
+{
+    return wait_until(p, exit_code, std::chrono::steady_clock::now() + rel_time, ec);
+}
+
+template< class Rep, class Period >
+inline bool wait_for(
+        const child_handle &p,
+        int & exit_code,
+        const std::chrono::duration<Rep, Period>& rel_time)
+{
+    std::error_code ec;
+    bool b = wait_for(p, exit_code, rel_time, ec);
+    boost::process::v1::detail::throw_error(ec, "waitpid(2) failed in wait_for");
+    return b;
+}
+
+}}}}}
+
+#endif

include/boost/process/v1/detail/posix/wait_group.hpp

@@ -0,0 +1,124 @@
+// 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_DETAIL_POSIX_WAIT_GROUP_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_WAIT_GROUP_HPP
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/detail/posix/group_handle.hpp>
+#include <chrono>
+#include <system_error>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+inline void wait(const group_handle &p, std::error_code &ec) noexcept
+{
+    pid_t ret;
+    siginfo_t  status;
+
+    do
+    {
+        ret = ::waitpid(-p.grp, &status.si_status, 0);
+        if (ret == -1)
+        {
+            ec = get_last_error();
+            return; 
+        }
+
+        //ECHILD --> no child processes left.
+        ret = ::waitid(P_PGID, p.grp, &status, WEXITED | WNOHANG);
+    } 
+    while ((ret != -1) || (errno != ECHILD));
+   
+    if (errno != ECHILD)
+        ec = boost::process::v1::detail::get_last_error();
+    else
+        ec.clear();
+}
+
+inline void wait(const group_handle &p) noexcept
+{
+    std::error_code ec;
+    wait(p, ec);
+    boost::process::v1::detail::throw_error(ec, "waitpid(2) failed in wait");
+}
+
+template< class Clock, class Duration >
+inline bool wait_until(
+        const group_handle &p,
+        const std::chrono::time_point<Clock, Duration>& time_out,
+        std::error_code & ec) noexcept
+{
+
+    ::siginfo_t siginfo;
+
+    bool timed_out = false;
+    int ret;
+
+    ::timespec sleep_interval;
+    sleep_interval.tv_sec = 0;
+    sleep_interval.tv_nsec = 100000000;
+
+
+    while (!(timed_out = (Clock::now() > time_out)))
+    {
+        ret = ::waitid(P_PGID, p.grp, &siginfo, WEXITED | WSTOPPED | WNOHANG);
+        if (ret == -1)
+        {
+            if ((errno == ECHILD) || (errno == ESRCH))
+            {
+                ec.clear();
+                return true;
+            }
+            ec = boost::process::v1::detail::get_last_error();
+            return false;
+        }
+        //we can wait, because unlike in the wait_for_exit, we have no race condition regarding eh exit code.
+        ::nanosleep(&sleep_interval, nullptr);
+    }
+    return !timed_out;
+}
+
+template< class Clock, class Duration >
+inline bool wait_until(
+        const group_handle &p,
+        const std::chrono::time_point<Clock, Duration>& time_out) noexcept
+{
+    std::error_code ec;
+    bool b = wait_until(p, time_out, ec);
+    boost::process::v1::detail::throw_error(ec, "waitpid(2) failed in wait_until");
+    return b;
+}
+
+template< class Rep, class Period >
+inline bool wait_for(
+        const group_handle &p,
+        const std::chrono::duration<Rep, Period>& rel_time,
+        std::error_code & ec) noexcept
+{
+    return wait_until(p, std::chrono::steady_clock::now() + rel_time, ec);
+}
+
+template< class Rep, class Period >
+inline bool wait_for(
+        const group_handle &p,
+        const std::chrono::duration<Rep, Period>& rel_time) noexcept
+{
+    std::error_code ec;
+    bool b = wait_for(p, rel_time, ec);
+    boost::process::v1::detail::throw_error(ec, "waitpid(2) failed in wait_for");
+    return b;
+}
+
+}}}}}
+
+#endif