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Diffstat (limited to 'boost/process/detail/posix/async_out.hpp')
-rw-r--r-- | boost/process/detail/posix/async_out.hpp | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/boost/process/detail/posix/async_out.hpp b/boost/process/detail/posix/async_out.hpp new file mode 100644 index 0000000000..b0f7876714 --- /dev/null +++ b/boost/process/detail/posix/async_out.hpp @@ -0,0 +1,170 @@ +// 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/detail/posix/handler.hpp>
+#include <boost/asio/posix/stream_descriptor.hpp>
+#include <boost/asio/read.hpp>
+#include <boost/process/async_pipe.hpp>
+#include <istream>
+#include <memory>
+#include <exception>
+#include <future>
+ +namespace boost { namespace process { 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::detail::posix::handler_base_ext,
+ ::boost::process::detail::posix::require_io_service
+{
+ Buffer & buf;
+ + std::shared_ptr<boost::process::async_pipe> pipe;
+ + + async_out_buffer(Buffer & buf) : buf(buf)
+ {
+ }
+ + template <typename Executor>
+ inline void on_success(Executor &exec)
+ {
+ auto pipe = this->pipe;
+ boost::asio::async_read(*pipe, buf,
+ [pipe](const boost::system::error_code&, std::size_t size){});
+ + 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::async_pipe>(get_io_service(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::detail::get_last_error(), "dup2() failed");
+ + ::close(pipe->native_sink());
+ }
+};
+ + + + +template<int p1, int p2, typename Type>
+struct async_out_future : ::boost::process::detail::posix::handler_base_ext,
+ ::boost::process::detail::posix::require_io_service
+{
+ 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::async_pipe> pipe;
+ + async_out_future(std::future<Type> & fut)
+ {
+ fut = promise->get_future();
+ }
+ template <typename Executor>
+ inline void on_success(Executor &exec)
+ {
+ 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 size)
+ {
+ 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;
+ 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::async_pipe>(get_io_service(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::detail::get_last_error(), "dup2() failed");
+ + ::close(pipe->native_sink());
+ }
+ +};
+ +}}}}
+ +#endif
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