整理

2026-03-23 20:54:41 +08:00
commit e13b3650e9
4596 changed files with 1015768 additions and 0 deletions
--- a/include/boost/process/v1/detail/used_handles.hpp
+++ b/include/boost/process/v1/detail/used_handles.hpp
@@ -0,0 +1,81 @@
+// 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_USED_HANDLES_HPP_
+#define BOOST_PROCESS_DETAIL_USED_HANDLES_HPP_
+
+#include <type_traits>
+#include <boost/fusion/include/filter_if.hpp>
+#include <boost/fusion/include/for_each.hpp>
+
+#if defined(BOOST_POSIX_API)
+#include <boost/process/v1/detail/posix/handles.hpp>
+#include <boost/process/v1/detail/posix/asio_fwd.hpp>
+#else
+#include <boost/process/v1/detail/windows/handles.hpp>
+#include <boost/process/v1/detail/windows/asio_fwd.hpp>
+#endif
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail {
+
+struct uses_handles
+{
+    //If you get an error here, you must add a `get_handles` function that returns a range or a single handle value
+    void get_used_handles() const;
+};
+
+template<typename T>
+struct does_use_handle: std::is_base_of<uses_handles, T> {};
+
+template<typename T>
+struct does_use_handle<T&> : std::is_base_of<uses_handles, T> {};
+
+template<typename T>
+struct does_use_handle<const T&> : std::is_base_of<uses_handles, T> {};
+
+template<typename Char, typename Sequence>
+class executor;
+
+template<typename Func>
+struct foreach_handle_invocator
+{
+    Func & func;
+    foreach_handle_invocator(Func & func) : func(func) {}
+
+
+    template<typename Range>
+    void invoke(const Range & range) const
+    {
+        for (auto handle_ : range)
+            func(handle_);
+
+    }
+    void invoke(::boost::process::v1::detail::api::native_handle_type handle) const {func(handle);};
+
+    template<typename T>
+    void operator()(T & val) const {invoke(val.get_used_handles());}
+};
+
+template<typename Executor, typename Function>
+void foreach_used_handle(Executor &exec, Function &&func)
+{
+    boost::fusion::for_each(boost::fusion::filter_if<does_use_handle<boost::mpl::_>>(exec.seq),
+                            foreach_handle_invocator<Function>(func));
+}
+
+template<typename Executor>
+std::vector<::boost::process::v1::detail::api::native_handle_type>
+        get_used_handles(Executor &exec)
+{
+    std::vector<::boost::process::v1::detail::api::native_handle_type> res = exec.get_used_handles();
+    foreach_used_handle(exec, [&](::boost::process::v1::detail::api::native_handle_type handle){res.push_back(handle);});
+    return res;
+}
+
+
+
+}}}}
+
+#endif /* BOOST_PROCESS_DETAIL_USED_HANDLES_HPP_ */