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// Copyright (c) 2006, 2007 Julio M. Merino Vidal
// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
// Copyright (c) 2009 Boris Schaeling
// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_PROCESS_DETAIL_POSIX_ASYNC_IN_HPP
#define BOOST_PROCESS_DETAIL_POSIX_ASYNC_IN_HPP
#include <boost/process/detail/handler_base.hpp>
#include <boost/process/detail/posix/async_handler.hpp>
#include <boost/asio/write.hpp>
#include <boost/process/async_pipe.hpp>
#include <memory>
#include <future>
namespace boost { namespace process { namespace detail { namespace posix {
template<typename Buffer>
struct async_in_buffer : ::boost::process::detail::posix::handler_base_ext,
::boost::process::detail::posix::require_io_context
{
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::async_pipe> pipe;
async_in_buffer(Buffer & buf) : buf(buf)
{
}
template <typename Executor>
inline void on_success(Executor &exec)
{
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&ec, std::size_t size){});
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)
{
pipe = std::make_shared<boost::process::async_pipe>(get_io_context(exec.seq));
}
template <typename Executor>
void on_exec_setup(Executor &exec)
{
if (::dup2(pipe->native_source(), STDIN_FILENO) == -1)
exec.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
::close(pipe->native_source());
}
};
}}}}
#endif
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