整理

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

@@ -0,0 +1,54 @@
+// 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_ON_EXIT_HPP_
+#define BOOST_PROCESS_DETAIL_ON_EXIT_HPP_
+
+#include <boost/process/v1/detail/config.hpp>
+
+#if defined(BOOST_POSIX_API)
+#include <boost/process/v1/detail/posix/on_exit.hpp>
+#elif defined(BOOST_WINDOWS_API)
+#include <boost/process/v1/detail/windows/on_exit.hpp>
+#endif
+
+#include <future>
+#include <memory>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail {
+
+inline std::function<void(int, const std::error_code &)> on_exit_from_future(std::future<int> &f)
+{
+    std::shared_ptr<std::promise<int>> promise = std::make_shared<std::promise<int>>();
+    f = promise->get_future();
+    return [promise](int code, const std::error_code & ec)
+            {
+                if (ec)
+                    promise->set_exception(
+                        std::make_exception_ptr(process_error(ec, "on_exit failed with error"))
+                        );
+                else
+                    promise->set_value(code);
+            };
+}
+
+
+struct on_exit_
+{
+    api::on_exit_ operator= (const std::function<void(int, const std::error_code&)> & f) const {return f;}
+    api::on_exit_ operator()(const std::function<void(int, const std::error_code&)> & f) const {return f;}
+
+    api::on_exit_ operator= (std::future<int> &f) const {return on_exit_from_future(f);}
+    api::on_exit_ operator()(std::future<int> &f) const {return on_exit_from_future(f);}
+};
+
+}
+
+constexpr static ::boost::process::v1::detail::on_exit_ on_exit{};
+
+
+}}}
+
+#endif /* INCLUDE_BOOST_PROCESS_WINDOWS_ON_EXIT_HPP_ */