整理

include/boost/process/v2/detail/config.hpp

@@ -0,0 +1,182 @@
+// Copyright (c) 2022 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_V2_DETAIL_CONFIG_HPP
+#define BOOST_PROCESS_V2_DETAIL_CONFIG_HPP
+
+#if defined(BOOST_PROCESS_V2_STANDALONE)
+
+#define BOOST_PROCESS_V2_COMPLETION_TOKEN_FOR(Sig) ASIO_COMPLETION_TOKEN_FOR(Sig)
+
+#include <asio/detail/config.hpp>
+#include <system_error>
+#include <filesystem>
+#include <string_view>
+#include <iomanip>
+#include <optional>
+
+#if defined(ASIO_WINDOWS)
+#define BOOST_PROCESS_V2_WINDOWS 1
+
+#endif
+
+#if defined(ASIO_HAS_UNISTD_H)
+#define BOOST_PROCESS_V2_POSIX 1
+#endif
+
+#define BOOST_PROCESS_V2_BEGIN_NAMESPACE namespace process_v2 {
+#define BOOST_PROCESS_V2_END_NAMESPACE   }
+#define BOOST_PROCESS_V2_NAMESPACE process_v2
+
+namespace asio {}
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+namespace net = ::asio;
+BOOST_PROCESS_V2_END_NAMESPACE
+
+#else
+
+#define BOOST_PROCESS_V2_COMPLETION_TOKEN_FOR(Sig) BOOST_ASIO_COMPLETION_TOKEN_FOR(Sig)
+
+#include <boost/config.hpp>
+#include <boost/io/quoted.hpp>
+#include <boost/system/error_code.hpp>
+#include <boost/system/system_category.hpp>
+#include <boost/system/system_error.hpp>
+#include <boost/optional.hpp>
+
+#if defined(BOOST_WINDOWS_API)
+#define BOOST_PROCESS_V2_WINDOWS 1
+
+
+#endif
+
+#if defined(BOOST_POSIX_API)
+#define BOOST_PROCESS_V2_POSIX 1
+#endif
+
+#if !defined(BOOST_PROCESS_V2_WINDOWS) && !defined(BOOST_POSIX_API)
+#error Unsupported operating system
+#endif
+
+#if defined(BOOST_PROCESS_USE_STD_FS)
+#include <filesystem>
+#else
+#include <boost/filesystem/path.hpp>
+#include <boost/filesystem/operations.hpp>
+#endif
+
+
+#if !defined(BOOST_PROCESS_VERSION)
+#define  BOOST_PROCESS_VERSION 2
+#endif
+
+
+#if BOOST_PROCESS_VERSION == 1
+#define BOOST_PROCESS_V2_BEGIN_NAMESPACE namespace boost { namespace process { namespace v2 {
+#else
+#define BOOST_PROCESS_V2_BEGIN_NAMESPACE namespace boost { namespace process { inline namespace v2 {
+#endif
+
+#define BOOST_PROCESS_V2_END_NAMESPACE  } } }
+#define BOOST_PROCESS_V2_NAMESPACE boost::process::v2
+
+namespace boost { namespace asio {} }
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+namespace net = ::boost::asio;
+BOOST_PROCESS_V2_END_NAMESPACE
+
+#endif
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+#if defined(BOOST_PROCESS_STANDALONE)
+
+using std::error_code ;
+using std::error_category ;
+using std::system_category ;
+using std::system_error ;
+namespace filesystem = std::filesystem;
+using std::quoted;
+using std::optional;
+
+#define BOOST_PROCESS_V2_ASSIGN_EC(ec, ...) ec.assign(__VA_ARGS__);
+#define BOOST_PROCESS_V2_ASSIGN_LAST_ERROR(ec)                         \
+  ec.assign(::BOOST_PROCESS_V2_NAMESPACE::detail::get_last_error());   \
+
+
+#else
+
+using boost::system::error_code ;
+using boost::system::error_category ;
+using boost::system::system_category ;
+using boost::system::system_error ;
+using boost::io::quoted;
+using boost::optional;
+
+#ifdef BOOST_PROCESS_USE_STD_FS
+namespace filesystem = std::filesystem;
+#else
+namespace filesystem = boost::filesystem;
+#endif
+
+#define BOOST_PROCESS_V2_ASSIGN_EC(ec, ...)                       \
+do                                                                \
+{                                                                 \
+  static constexpr auto loc##__LINE__((BOOST_CURRENT_LOCATION));  \
+  ec.assign(__VA_ARGS__,  &loc##__LINE__);                        \
+}                                                                 \
+while (false)
+
+#define BOOST_PROCESS_V2_ASSIGN_LAST_ERROR(ec)                                         \
+do                                                                                     \
+{                                                                                      \
+  static constexpr auto loc##__LINE__((BOOST_CURRENT_LOCATION));                       \
+  ec.assign(::BOOST_PROCESS_V2_NAMESPACE::detail::get_last_error(), &loc##__LINE__);   \
+}                                                                                      \
+while (false)
+
+
+#endif
+
+BOOST_PROCESS_V2_END_NAMESPACE
+
+#if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_PROCESS_DYN_LINK)
+#if defined(BOOST_PROCESS_SOURCE)
+#define BOOST_PROCESS_V2_DECL BOOST_SYMBOL_EXPORT
+#else
+#define BOOST_PROCESS_V2_DECL BOOST_SYMBOL_IMPORT
+#endif
+#else
+#define BOOST_PROCESS_V2_DECL
+#endif
+
+#if !defined(BOOST_PROCESS_SOURCE) && !defined(BOOST_ALL_NO_LIB) && !defined(BOOST_PROCESS_NO_LIB)
+#define BOOST_LIB_NAME boost_process
+#if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_PROCESS_DYN_LINK)
+#define BOOST_DYN_LINK
+#endif
+#include <boost/config/auto_link.hpp>
+#endif 
+
+#if defined(BOOST_PROCESS_V2_POSIX)
+
+#if defined(__linux__) && !defined(BOOST_PROCESS_V2_DISABLE_PIDFD_OPEN)
+
+#include <sys/syscall.h>
+
+#if defined(SYS_pidfd_open) && !defined(BOOST_PROCESS_V2_DISABLE_PIDFD_OPEN)
+#define BOOST_PROCESS_V2_PIDFD_OPEN 1
+#define BOOST_PROCESS_V2_HAS_PROCESS_HANDLE 1
+#endif
+#endif
+
+#if defined(__FreeBSD__) && defined(BOOST_PROCESS_V2_ENABLE_PDFORK)
+#define BOOST_PROCESS_V2_PDFORK 1
+#define BOOST_PROCESS_V2_HAS_PROCESS_HANDLE 1
+#endif
+#else
+#define BOOST_PROCESS_V2_HAS_PROCESS_HANDLE 1
+#endif
+
+#endif //BOOST_PROCESS_V2_DETAIL_CONFIG_HPP

include/boost/process/v2/detail/environment_posix.hpp

@@ -0,0 +1,90 @@
+//
+// process/environment/detail/environment_posix.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2021 Klemens D. Morgenstern (klemens dot morgenstern at gmx dot net)
+//
+// 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_V2_DETAIL_ENVIRONMENT_POSIX_HPP
+#define BOOST_PROCESS_V2_DETAIL_ENVIRONMENT_POSIX_HPP
+
+#include <boost/process/v2/detail/config.hpp>
+#include <boost/process/v2/cstring_ref.hpp>
+
+#if defined(__APPLE__)
+# include <crt_externs.h>
+# if !defined(environ)
+#  define environ (*_NSGetEnviron())
+# endif
+#elif defined(__MACH__) || defined(__FreeBSD__) || defined(__DragonFly__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__sun)
+ extern "C" { extern char **environ; }
+#endif
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+namespace environment
+{
+
+using char_type = char;
+
+template<typename Char>
+using key_char_traits = std::char_traits<Char>;
+
+template<typename Char>
+using value_char_traits = std::char_traits<Char>;
+
+
+constexpr char_type equality_sign = '=';
+constexpr char_type delimiter = ':';
+
+namespace detail
+{
+
+BOOST_PROCESS_V2_DECL
+basic_cstring_ref<char_type, value_char_traits<char>>
+get(basic_cstring_ref<char_type, key_char_traits<char_type>> key, error_code & ec);
+
+BOOST_PROCESS_V2_DECL
+void set(basic_cstring_ref<char_type, key_char_traits<char_type>> key,
+         basic_cstring_ref<char_type, value_char_traits<char_type>> value,
+         error_code & ec);
+
+BOOST_PROCESS_V2_DECL
+void unset(basic_cstring_ref<char_type, key_char_traits<char_type>> key,
+           error_code & ec);
+}
+
+
+using native_handle_type   = const char * const *;
+using native_iterator = native_handle_type;
+
+namespace detail
+{
+
+BOOST_PROCESS_V2_DECL native_handle_type load_native_handle();
+struct native_handle_deleter
+{
+    void operator()(native_handle_type) const {}
+};
+
+BOOST_PROCESS_V2_DECL native_iterator next(native_handle_type nh);
+BOOST_PROCESS_V2_DECL native_iterator find_end(native_handle_type nh);
+inline const char_type * dereference(native_iterator iterator) {return *iterator;}
+
+BOOST_PROCESS_V2_DECL bool has_x_access(const char * pth);
+
+inline bool is_executable(const filesystem::path & pth, error_code & ec)
+{
+  return filesystem::is_regular_file(pth, ec) && has_x_access(pth.c_str());
+}
+
+}
+
+}
+
+BOOST_PROCESS_V2_END_NAMESPACE
+
+#endif

include/boost/process/v2/detail/environment_win.hpp

@@ -0,0 +1,220 @@
+//
+// process/environment/detail/environment_win.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2021 Klemens D. Morgenstern (klemens dot morgenstern at gmx dot net)
+//
+// 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_V2_DETAIL_ENVIRONMENT_WIN_HPP
+#define BOOST_PROCESS_V2_DETAIL_ENVIRONMENT_WIN_HPP
+
+#include <boost/process/v2/detail/config.hpp>
+#include <boost/process/v2/cstring_ref.hpp>
+
+#include <cwctype>
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+namespace environment
+{
+
+using char_type = wchar_t;
+
+template<typename Char>
+struct key_char_traits
+{
+  typedef Char      char_type;
+  typedef typename std::char_traits<char_type>::int_type  int_type;
+  typedef typename std::char_traits<char_type>::off_type   off_type;
+  typedef typename std::char_traits<char_type>::pos_type   pos_type;
+  typedef typename std::char_traits<char_type>::state_type state_type;
+
+  BOOST_CONSTEXPR static char    to_lower(char c)    {return std::tolower(to_int_type(c));}
+  BOOST_CONSTEXPR static wchar_t to_lower(wchar_t c) {return std::towlower(to_int_type(c));}
+
+  BOOST_CONSTEXPR static int_type to_lower(int_type i, char )   {return std::tolower(i);}
+  BOOST_CONSTEXPR static int_type to_lower(int_type i, wchar_t) {return std::towlower(i);}
+
+
+  BOOST_CONSTEXPR static
+  void assign(char_type& c1, const char_type& c2) BOOST_NOEXCEPT
+  {
+    c1 = c2;
+  }
+
+  BOOST_CONSTEXPR static
+  bool eq(char_type c1, char_type c2) BOOST_NOEXCEPT
+  {
+    return to_lower(c1) == to_lower(c2);
+  }
+
+  BOOST_CONSTEXPR static
+  bool lt(char_type c1, char_type c2) BOOST_NOEXCEPT
+  {
+    return to_lower(c1) < to_lower(c2);
+  }
+
+  BOOST_CXX14_CONSTEXPR static
+  int compare(const char_type* s1, const char_type* s2, size_t n) BOOST_NOEXCEPT
+  {
+    auto itrs = std::mismatch(s1, s1 + n, s2, &eq);
+    if (itrs.first == (s1 + n))
+      return 0;
+    auto c1 = to_lower(*itrs.first);
+    auto c2 = to_lower(*itrs.second);
+
+    return (c1 < c2 ) ? -1 : 1;
+  }
+
+  static size_t length(const char* s)    BOOST_NOEXCEPT  { return std::strlen(s); }
+  static size_t length(const wchar_t* s) BOOST_NOEXCEPT  { return std::wcslen(s); }
+
+  BOOST_CXX14_CONSTEXPR static
+  const char_type* find(const char_type* s, size_t n, const char_type& a) BOOST_NOEXCEPT
+  {
+    const char_type u = to_lower(a);
+    return std::find_if(s, s + n, [u](char_type c){return to_lower(c) == u;});
+  }
+
+  BOOST_CXX14_CONSTEXPR static
+  char_type* move(char_type* s1, const char_type* s2, size_t n) BOOST_NOEXCEPT
+  {
+    if (s1 < s2)
+      return std::move(s2, s2 + n, s1);
+    else
+      return std::move_backward(s2, s2 + n, s1 + n);
+  }
+
+  BOOST_CONSTEXPR static
+  char_type* copy(char_type* s1, const char_type* s2, size_t n) BOOST_NOEXCEPT
+  {
+    return std::copy(s2, s2 + n, s1);
+  }
+
+  BOOST_CXX14_CONSTEXPR static
+  char_type* assign(char_type* s, size_t n, char_type a) BOOST_NOEXCEPT
+  {
+    std::fill(s, s + n, a);
+    return s +n;
+  }
+
+  BOOST_CONSTEXPR static
+  int_type not_eof(int_type c) BOOST_NOEXCEPT
+  {
+    return eq_int_type(c, eof()) ? ~eof() : c;
+  }
+
+  BOOST_CONSTEXPR static
+  char_type to_char_type(int_type c) BOOST_NOEXCEPT
+  {
+    return char_type(c);
+  }
+
+  BOOST_CONSTEXPR static
+  int_type to_int_type(char c) BOOST_NOEXCEPT
+  {
+    return int_type((unsigned char)c);
+  }
+
+  BOOST_CONSTEXPR static
+  int_type to_int_type(wchar_t c) BOOST_NOEXCEPT
+  {
+    return int_type((wchar_t)c);
+  }
+
+  BOOST_CONSTEXPR static
+  bool eq_int_type(int_type c1, int_type c2) BOOST_NOEXCEPT
+  {
+    return to_lower(c1, char_type()) == to_lower(c2, char_type());
+  }
+
+  BOOST_CONSTEXPR static inline int_type eof() BOOST_NOEXCEPT
+  {
+    return int_type(EOF);
+  }
+};
+
+namespace detail
+{
+
+
+template<typename Char>
+std::size_t hash_step(std::size_t prev, Char c, key_char_traits<Char>)
+{
+    return prev ^ (key_char_traits<Char>::to_lower(c) << 1);
+}
+
+
+}
+
+template<typename Char>
+using value_char_traits = std::char_traits<Char>;
+
+BOOST_CONSTEXPR static char_type equality_sign = L'=';
+BOOST_CONSTEXPR static char_type delimiter = L';';
+
+using native_handle_type   = wchar_t*;
+using native_iterator = const wchar_t*;
+
+namespace detail
+{
+
+BOOST_PROCESS_V2_DECL
+std::basic_string<wchar_t, value_char_traits<wchar_t>> get(
+        basic_cstring_ref<wchar_t, key_char_traits<wchar_t>> key,
+        error_code & ec);
+
+BOOST_PROCESS_V2_DECL
+void set(basic_cstring_ref<wchar_t,   key_char_traits<wchar_t>> key,
+         basic_cstring_ref<wchar_t, value_char_traits<wchar_t>> value,
+         error_code & ec);
+
+BOOST_PROCESS_V2_DECL
+void unset(basic_cstring_ref<wchar_t, key_char_traits<wchar_t>> key,
+           error_code & ec);
+
+
+BOOST_PROCESS_V2_DECL
+std::basic_string<char, value_char_traits<char>> get(
+        basic_cstring_ref<char, key_char_traits<char>> key,
+        error_code & ec);
+
+BOOST_PROCESS_V2_DECL
+void set(basic_cstring_ref<char,   key_char_traits<char>> key,
+         basic_cstring_ref<char, value_char_traits<char>> value,
+         error_code & ec);
+
+BOOST_PROCESS_V2_DECL
+void unset(basic_cstring_ref<char, key_char_traits<char>> key,
+           error_code & ec);
+
+BOOST_PROCESS_V2_DECL native_handle_type load_native_handle();
+struct native_handle_deleter
+{
+  native_handle_deleter() = default;
+  native_handle_deleter(const native_handle_deleter& ) = default;
+  BOOST_PROCESS_V2_DECL void operator()(native_handle_type nh) const;
+
+};
+
+inline const char_type * dereference(native_iterator iterator) {return iterator;}
+BOOST_PROCESS_V2_DECL native_iterator next(native_iterator nh);
+BOOST_PROCESS_V2_DECL native_iterator find_end(native_handle_type nh);
+
+
+BOOST_PROCESS_V2_DECL bool is_exec_type(const wchar_t * pth);
+
+inline bool is_executable(const filesystem::path & pth, error_code & ec)
+{
+  return filesystem::is_regular_file(pth, ec) && is_exec_type(pth.c_str());
+}
+
+}
+
+}
+BOOST_PROCESS_V2_END_NAMESPACE
+
+#endif //BOOST_PROCESS_V2_DETAIL_ENVIRONMENT_WIN_HPP

include/boost/process/v2/detail/last_error.hpp

@@ -0,0 +1,22 @@
+// Copyright (c) 2022 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_V2_DETAIL_LAST_ERROR_HPP
+#define BOOST_PROCESS_V2_DETAIL_LAST_ERROR_HPP
+
+#include <boost/process/v2/detail/config.hpp>
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+namespace detail
+{
+
+BOOST_PROCESS_V2_DECL error_code get_last_error();
+
+}
+
+BOOST_PROCESS_V2_END_NAMESPACE
+
+
+#endif //BOOST_PROCESS_V2_DETAIL_LAST_ERROR_HPP

include/boost/process/v2/detail/process_handle_fd.hpp

@@ -0,0 +1,355 @@
+
+// Copyright (c) 2022 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_V2_DETAIL_PROCESS_HANDLE_FD_HPP
+#define BOOST_PROCESS_V2_DETAIL_PROCESS_HANDLE_FD_HPP
+
+#include <boost/process/v2/detail/config.hpp>
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/syscall.h>
+
+#include <boost/process/v2/detail/last_error.hpp>
+#include <boost/process/v2/detail/throw_error.hpp>
+#include <boost/process/v2/exit_code.hpp>
+#include <boost/process/v2/pid.hpp>
+
+#if defined(BOOST_PROCESS_V2_STANDALONE)
+#include <asio/any_io_executor.hpp>
+#include <asio/compose.hpp>
+#include <asio/posix/basic_stream_descriptor.hpp>
+#include <asio/post.hpp>
+#else
+#include <boost/asio/any_io_executor.hpp>
+#include <boost/asio/compose.hpp>
+#include <boost/asio/posix/basic_stream_descriptor.hpp>
+#include <boost/asio/post.hpp>
+#endif
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+namespace detail
+{
+
+template<typename Executor = net::any_io_executor>
+struct basic_process_handle_fd
+{
+    using native_handle_type = int;
+    
+    typedef Executor executor_type;
+
+    executor_type get_executor()
+    { return descriptor_.get_executor(); }
+
+    /// Rebinds the process_handle to another executor.
+    template<typename Executor1>
+    struct rebind_executor
+    {
+        /// The socket type when rebound to the specified executor.
+        typedef basic_process_handle_fd<Executor1> other;
+    };
+
+    template<typename ExecutionContext>
+    basic_process_handle_fd(ExecutionContext &context,
+                            typename std::enable_if<
+                                std::is_convertible<ExecutionContext &,
+                                    net::execution_context &>::value>::type * = nullptr)
+            : pid_(-1), descriptor_(context)
+    {
+    }
+
+    basic_process_handle_fd(executor_type executor)
+            : pid_(-1), descriptor_(executor)
+    {
+    }
+
+    basic_process_handle_fd(executor_type executor, pid_type pid)
+            : pid_(pid), descriptor_(executor, syscall(SYS_pidfd_open, pid, 0))
+    {
+        if (descriptor_.native_handle() == -1)
+            detail::throw_error(detail::get_last_error(), "wait(pid)");
+    }
+
+    basic_process_handle_fd(executor_type executor, pid_type pid, native_handle_type process_handle)
+            : pid_(pid), descriptor_(executor, process_handle)
+    {
+    }
+
+    basic_process_handle_fd(basic_process_handle_fd &&handle)
+            : pid_(handle.pid_), descriptor_(std::move(handle.descriptor_))
+    {
+        handle.pid_ = -1;
+    }
+
+    template<typename Executor1>
+    basic_process_handle_fd(basic_process_handle_fd<Executor1> &&handle)
+            : pid_(handle.pid_), descriptor_(std::move(handle.descriptor_))
+    {
+        handle.pid_ = -1;
+    }
+
+
+    basic_process_handle_fd& operator=(basic_process_handle_fd &&handle)
+    {
+        pid_ = handle.pid_;
+        descriptor_ = std::move(handle.descriptor_);
+        handle.pid_ = -1;
+        return *this;
+    }
+
+    pid_type id() const
+    { return pid_; }
+
+    native_handle_type native_handle() {return pid_;}
+
+    void terminate_if_running(error_code &)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::waitpid(pid_, nullptr, WNOHANG) == 0)
+        {
+            ::kill(pid_, SIGKILL);
+            ::waitpid(pid_, nullptr, 0);
+        }
+    }
+
+    void terminate_if_running()
+    {
+        if (pid_ <= 0)
+            return;
+        if (::waitpid(pid_, nullptr, WNOHANG) == 0)
+        {
+            ::kill(pid_, SIGKILL);
+            ::waitpid(pid_, nullptr, 0);
+        }
+    }
+
+    void wait(native_exit_code_type &exit_status, error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        while (::waitpid(pid_, &exit_status, 0) < 0)
+        {
+            if (errno != EINTR)
+            {
+                ec = get_last_error();
+                break;
+            }   
+        }
+    }
+
+    void wait(native_exit_code_type &exit_status)
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        wait(exit_status, ec);
+        if (ec)
+            detail::throw_error(ec, "wait(pid)");
+    }
+
+    void interrupt(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::kill(pid_, SIGINT) == -1)
+            ec = get_last_error();
+    }
+
+    void interrupt()
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        interrupt(ec);
+        if (ec)
+            detail::throw_error(ec, "interrupt");
+    }
+
+    void request_exit(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::kill(pid_, SIGTERM) == -1)
+            ec = get_last_error();
+    }
+
+    void request_exit()
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        request_exit(ec);
+        if (ec)
+            detail::throw_error(ec, "request_exit");
+    }
+    
+    void suspend()
+    {
+        if (pid_ <= 0)
+            return ;
+        error_code ec;
+        suspend(ec);
+        if (ec)
+            detail::throw_error(ec, "suspend");
+    }
+
+    void suspend(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return ;
+        if (::kill(pid_, SIGSTOP) == -1)
+            ec = get_last_error();
+    }
+
+    void resume()
+    {
+        if (pid_ <= 0)
+            return ;
+        error_code ec;
+        resume(ec);
+        if (ec)
+            detail::throw_error(ec, "resume");
+    }
+
+    void resume(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return ;
+        if (::kill(pid_, SIGCONT) == -1)
+            ec = get_last_error();
+    }
+    void terminate(native_exit_code_type &exit_status, error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::kill(pid_, SIGKILL) == -1)
+            ec = get_last_error();
+        else
+            wait(exit_status, ec);
+    }
+
+    void terminate(native_exit_code_type &exit_status)
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        terminate(exit_status, ec);
+        if (ec)
+            detail::throw_error(ec, "terminate");
+    }
+
+    bool running(native_exit_code_type &exit_code, error_code & ec)
+    {
+        if (pid_ <= 0)
+            return false;
+        int code = 0;
+        int res = ::waitpid(pid_, &code, WNOHANG);
+        if (res == -1)
+            ec = get_last_error();
+        else if (res == 0)
+            return true;
+        else
+        {
+            ec.clear();
+            exit_code = code;
+        }
+        return false;
+    }
+
+    bool running(native_exit_code_type &exit_code)
+    {
+        if (pid_ <= 0)
+            return false;
+
+        error_code ec;
+        bool res = running(exit_code, ec);
+        if (ec)
+            detail::throw_error(ec, "is_running");
+        return res;
+    }
+
+    bool is_open() const
+    {
+        return pid_ != -1;
+    }
+
+  private:
+    template<typename>
+    friend
+    struct basic_process_handle_fd;
+    pid_type pid_ = -1;
+    net::posix::basic_stream_descriptor<Executor> descriptor_;
+
+    struct async_wait_op_
+    {
+        net::posix::basic_descriptor<Executor> &descriptor;
+        pid_type pid_;
+        native_exit_code_type & exit_code;
+        template<typename Self>
+        void operator()(Self &&self)
+        {
+            self.reset_cancellation_state(asio::enable_total_cancellation());
+            error_code ec;
+            int wait_res = -1;
+            if (pid_ <= 0) // error, complete early
+              BOOST_PROCESS_V2_ASSIGN_EC(ec, net::error::bad_descriptor);
+            else if (process_is_running(exit_code))
+            {
+                wait_res = ::waitpid(pid_, &exit_code, WNOHANG);
+                if (wait_res == -1)
+                    ec = get_last_error();
+            }
+            if (!ec && (wait_res == 0))
+            {
+                descriptor.async_wait(net::posix::descriptor_base::wait_read, std::move(self));
+                return;
+            }
+
+            struct completer
+            {
+                error_code ec;
+                typename std::decay<Self>::type self;
+
+                void operator()()
+                {
+                    self.complete(ec);
+                }
+            };
+            net::dispatch(
+                net::get_associated_immediate_executor(self, descriptor.get_executor()),
+                completer{ec, std::move(self)});
+
+        }
+
+        template<typename Self>
+        void operator()(Self &&self, error_code ec, int = 0)
+        {
+            if (!ec && process_is_running(exit_code))
+                if (::waitpid(pid_, &exit_code, 0) == -1)
+                    ec = get_last_error();
+            std::move(self).complete(ec);
+        }
+    };
+ public:
+
+    template<BOOST_PROCESS_V2_COMPLETION_TOKEN_FOR(void(error_code))
+    WaitHandler = net::default_completion_token_t<executor_type>>
+    auto async_wait(native_exit_code_type & exit_code,
+                    WaitHandler &&handler = net::default_completion_token_t<executor_type>())
+    -> decltype(net::async_compose<WaitHandler, void(error_code)>(
+        async_wait_op_{descriptor_, pid_, exit_code}, handler, descriptor_))
+    {
+      return net::async_compose<WaitHandler, void(error_code)>(
+          async_wait_op_{descriptor_, pid_, exit_code}, handler, descriptor_);
+    }
+
+};
+}
+
+BOOST_PROCESS_V2_END_NAMESPACE
+
+#endif //BOOST_PROCESS_HANDLE_FD_OR_SIGNAL_HPP

include/boost/process/v2/detail/process_handle_fd_or_signal.hpp

@@ -0,0 +1,413 @@
+
+// Copyright (c) 2022 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_V2_DETAIL_PROCESS_HANDLE_FD_OR_SIGNAL_HPP
+#define BOOST_PROCESS_V2_DETAIL_PROCESS_HANDLE_FD_OR_SIGNAL_HPP
+
+#include <boost/process/v2/detail/config.hpp>
+
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <boost/process/v2/detail/last_error.hpp>
+#include <boost/process/v2/detail/throw_error.hpp>
+#include <boost/process/v2/exit_code.hpp>
+#include <boost/process/v2/pid.hpp>
+
+#if defined(BOOST_PROCESS_V2_STANDALONE)
+#include <asio/any_io_executor.hpp>
+#include <asio/append.hpp>
+#include <asio/associated_immediate_executor.hpp>
+#include <asio/compose.hpp>
+#include <asio/dispatch.hpp>
+#include <asio/posix/basic_stream_descriptor.hpp>
+#include <asio/post.hpp>
+#if !defined(BOOST_PROCESS_V2_DISABLE_SIGNALSET)
+#include <asio/signal_set.hpp>
+#endif
+#else
+#include <boost/asio/any_io_executor.hpp>
+#include <boost/asio/append.hpp>
+#include <boost/asio/associated_immediate_executor.hpp>
+#include <boost/asio/compose.hpp>
+#include <boost/asio/dispatch.hpp>
+#include <boost/asio/posix/basic_stream_descriptor.hpp>
+#include <boost/asio/post.hpp>
+#if !defined(BOOST_PROCESS_V2_DISABLE_SIGNALSET)
+#include <boost/asio/signal_set.hpp>
+#endif
+#endif
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+namespace detail
+{
+
+template<typename Executor = net::any_io_executor>
+struct basic_process_handle_fd_or_signal
+{
+    using native_handle_type = int;
+    
+    typedef Executor executor_type;
+
+    executor_type get_executor()
+    { return descriptor_.get_executor(); }
+
+    /// Rebinds the process_handle to another executor.
+    template<typename Executor1>
+    struct rebind_executor
+    {
+        /// The socket type when rebound to the specified executor.
+        typedef basic_process_handle_fd_or_signal<Executor1> other;
+    };
+
+    template<typename ExecutionContext>
+    basic_process_handle_fd_or_signal(ExecutionContext &context,
+                                typename std::enable_if<
+                                        std::is_convertible<ExecutionContext &,
+                                                net::execution_context &>::value
+                                >::type * = nullptr)
+            : pid_(-1), descriptor_(context)
+    {
+    }
+
+    template<typename ExecutionContext>
+    basic_process_handle_fd_or_signal(ExecutionContext &context,
+                                      pid_type pid,
+                                      typename std::enable_if<
+                                          std::is_convertible<ExecutionContext &,
+                                              net::execution_context &>::value
+                                          >::type * = nullptr)
+            : pid_(pid), descriptor_(context)
+    {
+    }
+    
+    template<typename ExecutionContext>
+    basic_process_handle_fd_or_signal(ExecutionContext &context,
+                                      pid_type pid, native_handle_type process_handle,
+                                      typename std::enable_if<
+                                          std::is_convertible<ExecutionContext &,
+                                              net::execution_context &>::value
+                                          >::type * = nullptr)
+            : pid_(pid), descriptor_(context, process_handle)
+    {
+    }
+    
+
+    basic_process_handle_fd_or_signal(Executor executor)
+            : pid_(-1), descriptor_(executor)
+    {
+    }
+
+    basic_process_handle_fd_or_signal(Executor executor, pid_type pid)
+            : pid_(pid), descriptor_(executor)
+    {
+    }
+
+    basic_process_handle_fd_or_signal(Executor executor, pid_type pid, native_handle_type process_handle)
+            : pid_(pid), descriptor_(executor, process_handle)
+    {
+    }
+
+
+    basic_process_handle_fd_or_signal(basic_process_handle_fd_or_signal &&handle)
+            : pid_(handle.pid_), descriptor_(std::move(handle.descriptor_))
+    {
+        handle.pid_ = -1;
+    }
+    // Warn: does not change the executor of the signal-set.
+    basic_process_handle_fd_or_signal& operator=(basic_process_handle_fd_or_signal &&handle)
+    {
+        pid_ = handle.pid_;
+        descriptor_ = std::move(handle.descriptor_);
+        handle.pid_ = -1;
+        return *this;
+    }
+
+
+    template<typename Executor1>
+    basic_process_handle_fd_or_signal(basic_process_handle_fd_or_signal<Executor1> &&handle)
+            : pid_(handle.pid_), descriptor_(std::move(handle.descriptor_))
+    {
+        handle.pid_ = -1;
+    }
+
+    pid_type id() const
+    { return pid_; }
+    native_handle_type native_handle() {return pid_;}
+
+    void terminate_if_running(error_code &)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::waitpid(pid_, nullptr, WNOHANG) == 0)
+        {
+            ::kill(pid_, SIGKILL);
+            ::waitpid(pid_, nullptr, 0);
+        }
+    }
+
+    void terminate_if_running()
+    {
+        if (pid_ <= 0)
+            return;
+        if (::waitpid(pid_, nullptr, WNOHANG) == 0)
+        {
+            ::kill(pid_, SIGKILL);
+            ::waitpid(pid_, nullptr, 0);
+        }
+    }
+
+    void wait(native_exit_code_type &exit_status, error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        while (::waitpid(pid_, &exit_status, 0) < 0)
+        {
+            if (errno != EINTR)
+            {
+                ec = get_last_error();
+                break;
+            }               
+        }
+            
+    }
+
+    void wait(native_exit_code_type &exit_status)
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        wait(exit_status, ec);
+        if (ec)
+            detail::throw_error(ec, "wait(pid)");
+    }
+
+    void interrupt(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::kill(pid_, SIGINT) == -1)
+            ec = get_last_error();
+    }
+
+    void interrupt()
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        interrupt(ec);
+        if (ec)
+            detail::throw_error(ec, "interrupt");
+    }
+
+    void request_exit(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::kill(pid_, SIGTERM) == -1)
+            ec = get_last_error();
+    }
+
+    void request_exit()
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        request_exit(ec);
+        if (ec)
+            detail::throw_error(ec, "request_exit");
+    }
+    
+    void suspend()
+    {
+        if (pid_ <= 0)
+            return ;
+        error_code ec;
+        suspend(ec);
+        if (ec)
+            detail::throw_error(ec, "suspend");
+    }
+
+    void suspend(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return ;
+        if (::kill(pid_, SIGSTOP) == -1)
+            ec = get_last_error();
+    }
+
+    void resume()
+    {
+        if (pid_ <= 0)
+            return ;
+        error_code ec;
+        resume(ec);
+        if (ec)
+            detail::throw_error(ec, "resume");
+    }
+
+    void resume(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return ;
+        if (::kill(pid_, SIGCONT) == -1)
+            ec = get_last_error();
+    }
+
+    void terminate(native_exit_code_type &exit_status, error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::kill(pid_, SIGKILL) == -1)
+            ec = get_last_error();
+        else
+            wait(exit_status, ec);
+    }
+
+    void terminate(native_exit_code_type &exit_status)
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        terminate(exit_status, ec);
+        if (ec)
+            detail::throw_error(ec, "terminate");
+    }
+
+    bool running(native_exit_code_type &exit_code, error_code & ec)
+    {
+        if (pid_ <= 0)
+            return false;
+        int code = 0;
+        int res = ::waitpid(pid_, &code, WNOHANG);
+        if (res == -1)
+            ec = get_last_error();
+        else if (res == 0)
+            return true;
+        else
+        {
+            ec.clear();
+            exit_code = code;
+        }
+        return false;
+    }
+
+    bool running(native_exit_code_type &exit_code)
+    {
+        if (pid_ <= 0)
+            return false;
+
+        error_code ec;
+        bool res = running(exit_code, ec);
+        if (ec)
+            detail::throw_error(ec, "is_running");
+        return res;
+    }
+
+    bool is_open() const
+    {
+        return pid_ != -1;
+    }
+
+  private:
+    template<typename>
+    friend
+    struct basic_process_handle_fd_or_signal;
+    pid_type pid_ = -1;
+    net::posix::basic_stream_descriptor<Executor> descriptor_;
+#if !defined(BOOST_PROCESS_V2_DISABLE_SIGNALSET)
+    net::basic_signal_set<Executor> signal_set_{descriptor_.get_executor(), SIGCHLD};
+#else
+    int signal_set_;
+#endif
+    struct async_wait_op_
+    {
+        net::posix::basic_descriptor<Executor> &descriptor;
+#if !defined(BOOST_PROCESS_V2_DISABLE_SIGNALSET)
+        net::basic_signal_set<Executor> &handle;
+#else
+        int dummy;
+#endif
+        pid_type pid_;
+        native_exit_code_type & exit_code;
+        bool needs_post = true;
+
+        template<typename Self>
+        void operator()(Self && self)
+        {
+          self.reset_cancellation_state(asio::enable_total_cancellation());
+          (*this)(std::move(self), error_code{});
+        }
+
+        template<typename Self>
+        void operator()(Self &&self, error_code ec, int = 0)
+        {
+            int wait_res = -1;
+            if (pid_ <= 0) // error, complete early
+                ec = net::error::bad_descriptor;
+            else if (process_is_running(exit_code))
+            {
+                wait_res = ::waitpid(pid_, &exit_code, WNOHANG);
+                if (wait_res == -1)
+                    ec = get_last_error();
+            }
+
+            if (!ec && (wait_res == 0))
+            {
+                if (descriptor.is_open())
+                {
+                  needs_post = false;
+                  descriptor.async_wait(
+                      net::posix::descriptor_base::wait_read,
+                      std::move(self));
+                  return;
+                }
+                else
+                {
+#if !defined(BOOST_PROCESS_V2_DISABLE_SIGNALSET)
+                  needs_post = false;
+                  handle.async_wait(std::move(self));
+                  return;
+#else
+                  BOOST_PROCESS_V2_ASSIGN_EC(ec, net::error::operation_not_supported);
+#endif
+                }
+            }
+
+            if (needs_post)
+            {
+              auto exec = net::get_associated_immediate_executor(self, descriptor.get_executor());
+              net::dispatch(exec, net::append(std::move(self), exit_code, ec));
+            }
+            else
+            {
+              auto exec = net::get_associated_executor(self);
+              net::dispatch(exec, net::append(std::move(self), exit_code, ec));
+            }
+        }
+        template<typename Self>
+        void operator()(Self &&self, native_exit_code_type code, error_code ec)
+        {
+          self.complete(ec);
+        }
+    };
+ public:
+    template<BOOST_PROCESS_V2_COMPLETION_TOKEN_FOR(void(error_code))
+             WaitHandler = net::default_completion_token_t<executor_type>>
+    auto async_wait(native_exit_code_type & exit_code,
+                    WaitHandler &&handler = net::default_completion_token_t<executor_type>())
+      -> decltype(net::async_compose<WaitHandler, void(error_code)>(
+                  async_wait_op_{descriptor_, signal_set_, pid_, exit_code}, handler, descriptor_))
+    {
+        return net::async_compose<WaitHandler, void(error_code)>(
+                async_wait_op_{descriptor_, signal_set_, pid_, exit_code}, handler, descriptor_);
+    }
+};
+}
+
+BOOST_PROCESS_V2_END_NAMESPACE
+
+#endif //BOOST_PROCESS_HANDLE_FD_OR_SIGNAL_HPP

include/boost/process/v2/detail/process_handle_signal.hpp

@@ -0,0 +1,387 @@
+// Copyright (c) 2022 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_V2_DETAIL_PROCESS_HANDLE_SIGNAL_HPP
+#define BOOST_PROCESS_V2_DETAIL_PROCESS_HANDLE_SIGNAL_HPP
+
+#include <boost/process/v2/detail/config.hpp>
+
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <boost/process/v2/detail/last_error.hpp>
+#include <boost/process/v2/detail/throw_error.hpp>
+#include <boost/process/v2/exit_code.hpp>
+#include <boost/process/v2/pid.hpp>
+
+#if defined(BOOST_PROCESS_V2_STANDALONE)
+#include <asio/any_io_executor.hpp>
+#include <asio/append.hpp>
+#include <asio/associated_immediate_executor.hpp>
+#include <asio/compose.hpp>
+#include <asio/dispatch.hpp>
+#include <asio/post.hpp>
+#if !defined(BOOST_PROCESS_V2_DISABLE_SIGNALSET)
+#include <asio/signal_set.hpp>
+#endif
+#else
+#include <boost/asio/any_io_executor.hpp>
+#include <boost/asio/append.hpp>
+#include <boost/asio/associated_immediate_executor.hpp>
+#include <boost/asio/compose.hpp>
+#include <boost/asio/dispatch.hpp>
+#include <boost/asio/post.hpp>
+#if !defined(BOOST_PROCESS_V2_DISABLE_SIGNALSET)
+#include <boost/asio/signal_set.hpp>
+#endif
+#endif
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+namespace detail
+{
+
+template<typename Executor = net::any_io_executor>
+struct basic_process_handle_signal
+{
+    struct native_handle_type
+    {
+         native_handle_type() = delete;
+         native_handle_type(const native_handle_type & ) = delete;
+        ~native_handle_type() = default;
+    };
+
+    typedef Executor executor_type;
+
+    executor_type get_executor()
+    { return signal_set_.get_executor(); }
+
+    /// Rebinds the process_handle to another executor.
+    template<typename Executor1>
+    struct rebind_executor
+    {
+        /// The socket type when rebound to the specified executor.
+        typedef basic_process_handle_signal<Executor1> other;
+    };
+
+    template<typename ExecutionContext>
+    basic_process_handle_signal(ExecutionContext &context,
+                         typename std::enable_if<
+                                 std::is_convertible<ExecutionContext &,
+                                         net::execution_context &>::value
+                         >::type * = nullptr)
+            : pid_(-1), signal_set_(context, SIGCHLD)
+    {
+    }
+
+    basic_process_handle_signal(Executor executor)
+            : pid_(-1), signal_set_(executor, SIGCHLD)
+    {
+    }
+
+    basic_process_handle_signal(Executor executor, pid_type pid)
+            : pid_(pid), signal_set_(executor, SIGCHLD)
+    {
+    }
+
+    basic_process_handle_signal(basic_process_handle_signal && handle)
+    : pid_(handle.pid_), signal_set_(handle.signal_set_.get_executor(), SIGCHLD)
+    {
+        handle.pid_ = -1;
+    }
+
+    basic_process_handle_signal& operator=(basic_process_handle_signal && handle)
+    {
+        pid_ = handle.id();
+#if !defined(BOOST_PROCESS_V2_DISABLE_SIGNALSET)
+
+        signal_set_.~basic_signal_set();
+        using ss = net::basic_signal_set<Executor>;
+        new (&signal_set_) ss(handle.get_executor(), SIGCHLD);
+#else
+        signal_set_.executor = handle.signal_set_.executor;
+#endif
+        handle.pid_ = -1;
+        return *this;
+    }
+
+
+    template<typename Executor1>
+    basic_process_handle_signal(basic_process_handle_signal<Executor1> && handle)
+    : pid_(handle.pid_), signal_set_(Executor1(handle.signal_set_.get_executor()), SIGCHLD)
+    {
+        handle.pid_ = -1;
+    }
+
+    pid_type id() const { return pid_; }
+    native_handle_type native_handle() {return {};}
+
+    void terminate_if_running(error_code &)
+    {
+         terminate_if_running();
+    }
+
+    void terminate_if_running()
+    {
+        if (pid_ <= 0)
+            return;
+        if (::waitpid(pid_, nullptr, WNOHANG) == 0)
+        {
+            ::kill(pid_, SIGKILL);
+            ::waitpid(pid_, nullptr, 0);
+        }
+    }
+
+    void wait(native_exit_code_type &exit_status, error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        while (::waitpid(pid_, &exit_status, 0) < 0)
+        {
+            if (errno != EINTR)
+            {
+                ec = get_last_error();
+                break;
+            }      
+        }
+    }
+
+    void wait(native_exit_code_type &exit_status)
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        wait(exit_status, ec);
+        if (ec)
+            detail::throw_error(ec, "wait(pid)");
+    }
+
+    void interrupt(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::kill(pid_, SIGINT) == -1)
+            ec = get_last_error();
+    }
+
+    void interrupt()
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        interrupt(ec);
+        if (ec)
+            detail::throw_error(ec, "interrupt");
+    }
+
+    void request_exit(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::kill(pid_, SIGTERM) == -1)
+            ec = get_last_error();
+    }
+
+    void request_exit()
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        request_exit(ec);
+        if (ec)
+            detail::throw_error(ec, "request_exit");
+    }
+
+    void suspend()
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        suspend(ec);
+        if (ec)
+            detail::throw_error(ec, "suspend");
+    }
+
+    void suspend(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::kill(pid_, SIGSTOP) == -1)
+            ec = get_last_error();
+    }
+
+    void resume()
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        resume(ec);
+        if (ec)
+            detail::throw_error(ec, "resume");
+    }
+
+    void resume(error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::kill(pid_, SIGCONT) == -1)
+            ec = get_last_error();
+    }
+
+    void terminate(native_exit_code_type &exit_status, error_code &ec)
+    {
+        if (pid_ <= 0)
+            return;
+        if (::kill(pid_, SIGKILL) == -1)
+            ec = get_last_error();
+        else
+            wait(exit_status, ec);
+    }
+
+    void terminate(native_exit_code_type &exit_status)
+    {
+        if (pid_ <= 0)
+            return;
+        error_code ec;
+        terminate(exit_status, ec);
+        if (ec)
+            detail::throw_error(ec, "terminate");
+    }
+
+    bool running(native_exit_code_type &exit_code, error_code & ec)
+    {
+        if (pid_ <= 0)
+            return false;
+        int code = 0;
+        int res = ::waitpid(pid_, &code, WNOHANG);
+        if (res == -1)
+            ec = get_last_error();
+        else if (res == 0)
+            return true;
+        else
+        {
+            ec.clear();
+            exit_code = code;
+        }
+        return false;
+    }
+
+    bool running(native_exit_code_type &exit_code)
+    {
+        if (pid_ <= 0)
+            return false;
+
+        error_code ec;
+        bool res = running(exit_code, ec);
+        if (ec)
+            detail::throw_error(ec, "is_running");
+        return res;
+    }
+
+    bool is_open() const
+    {
+        return pid_ != -1;
+    }
+
+  private:
+    template<typename>
+    friend struct basic_process_handle_signal;
+    pid_type pid_ = -1;
+#if !defined(BOOST_PROCESS_V2_DISABLE_SIGNALSET)
+    net::basic_signal_set<Executor> signal_set_;
+#else
+    struct signal_set_dummy_
+    {
+      signal_set_dummy_(signal_set_dummy_ &&) = default;
+      signal_set_dummy_(const signal_set_dummy_ &) = default;
+      Executor executor;
+      using executor_type = Executor;
+      executor_type get_executor() {return executor;}
+      signal_set_dummy_(Executor executor, int) : executor(std::move(executor)) {}
+    };
+    signal_set_dummy_ signal_set_;
+#endif
+    struct async_wait_op_
+    {
+#if !defined(BOOST_PROCESS_V2_DISABLE_SIGNALSET)
+
+        net::basic_signal_set<Executor> &handle;
+        pid_type pid_;
+        native_exit_code_type & exit_code;
+
+        template<typename Self>
+        void operator()(Self &&self)
+        {
+            self.reset_cancellation_state(asio::enable_total_cancellation());
+            handle.async_wait(std::move(self));
+            handle.cancel();
+            // we cancel so we end up on the signal-sets executor 
+        }
+
+        template<typename Self>
+        void operator()(Self &&self, error_code ec, int /*sig*/)
+        {
+            if (ec == net::error::operation_aborted &&
+                self.get_cancellation_state().cancelled() 
+                    == net::cancellation_type::none)
+                ec.clear();
+
+            int wait_res = -1;
+
+            if (pid_ <= 0) // error, complete early
+                ec = net::error::bad_descriptor;
+            else if (!ec && process_is_running(exit_code))
+            {
+                wait_res = ::waitpid(pid_, &exit_code, WNOHANG);
+                if (wait_res == -1)
+                    ec = get_last_error();
+            }
+
+            if (!ec && (wait_res == 0))
+            {
+                handle.async_wait(std::move(self));
+                return;
+            }
+
+            const auto exec = self.get_executor();
+            net::dispatch(exec, net::append(std::move(self), ec));
+        }
+#else
+        signal_set_dummy_ dummy_;
+        pid_t pid;
+        template<typename Self>
+        void operator()(Self &&self)
+        {
+          auto exec = net::get_associated_immediate_executor(self, dummy_.get_executor());
+          error_code ec;
+          BOOST_PROCESS_V2_ASSIGN_EC(ec, net::error::operation_not_supported);
+          net::dispatch(exec, net::append(std::move(self), native_exit_code_type(), ec));
+        }
+#endif
+        template<typename Self>
+        void operator()(Self &&self, error_code ec)
+        {
+          self.complete(ec);
+        }
+    };
+ public:
+    template<BOOST_PROCESS_V2_COMPLETION_TOKEN_FOR(void(error_code))
+             WaitHandler = net::default_completion_token_t<executor_type>>
+    auto async_wait(native_exit_code_type & exit_code,
+                    WaitHandler &&handler = net::default_completion_token_t<executor_type>())
+      -> decltype(net::async_compose<WaitHandler, void(error_code)>(
+                    async_wait_op_{signal_set_, pid_, exit_code}, handler, signal_set_))
+    {
+        return net::async_compose<WaitHandler, void(error_code)>(
+                async_wait_op_{signal_set_, pid_, exit_code}, handler, signal_set_);
+    }
+};
+
+}
+
+
+BOOST_PROCESS_V2_END_NAMESPACE
+
+
+#endif //BOOST_PROCESS_V2_DETAIL_PROCESS_HANDLE_SIGNAL_HPP

include/boost/process/v2/detail/process_handle_windows.hpp

@@ -0,0 +1,326 @@
+// Copyright (c) 2022 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_V2_DETAIL_PROCESS_HANDLE_WINDOWS_HPP
+#define BOOST_PROCESS_V2_DETAIL_PROCESS_HANDLE_WINDOWS_HPP
+
+#include <boost/process/v2/detail/config.hpp>
+
+#include <boost/process/v2/exit_code.hpp>
+#include <boost/process/v2/pid.hpp>
+#include <boost/process/v2/detail/throw_error.hpp>
+
+#if defined(BOOST_PROCESS_V2_STANDALONE)
+#include <asio/any_io_executor.hpp>
+#include <asio/compose.hpp>
+#include <asio/windows/basic_object_handle.hpp>
+#else
+#include <boost/asio/any_io_executor.hpp>
+#include <boost/asio/compose.hpp>
+#include <boost/asio/windows/basic_object_handle.hpp>
+#endif
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+namespace detail
+{
+  
+BOOST_PROCESS_V2_DECL void get_exit_code_( void * handle, native_exit_code_type & exit_code, error_code & ec);
+BOOST_PROCESS_V2_DECL void * open_process_(pid_type pid);
+BOOST_PROCESS_V2_DECL void terminate_if_running_(void * handle);
+BOOST_PROCESS_V2_DECL bool check_handle_(void* handle, error_code & ec);
+BOOST_PROCESS_V2_DECL bool check_pid_(pid_type pid_, error_code & ec);
+BOOST_PROCESS_V2_DECL void interrupt_(pid_type pid_, error_code & ec);
+BOOST_PROCESS_V2_DECL void suspend_(void * handle, error_code & ec);
+BOOST_PROCESS_V2_DECL void resume_(void * handle, error_code & ec);
+BOOST_PROCESS_V2_DECL void terminate_(void * handle, error_code & ec, native_exit_code_type & exit_code);
+BOOST_PROCESS_V2_DECL void request_exit_(pid_type pid_, error_code & ec);
+BOOST_PROCESS_V2_DECL void check_running_(void* handle, error_code & ec, native_exit_code_type & exit_status);
+
+template<typename Executor = net::any_io_executor>
+struct basic_process_handle_win
+{
+    typedef net::windows::basic_object_handle<Executor> handle_type;
+    typedef typename handle_type::native_handle_type native_handle_type;
+
+    typedef Executor executor_type;
+
+    executor_type get_executor()
+    { return handle_.get_executor(); }
+
+    /// Rebinds the process_handle to another executor.
+    template<typename Executor1>
+    struct rebind_executor
+    {
+        /// The socket type when rebound to the specified executor.
+        typedef basic_process_handle_win<Executor1> other;
+    };
+
+    template<typename ExecutionContext>
+    basic_process_handle_win(ExecutionContext &context,
+                         typename std::enable_if<
+                                 std::is_convertible<ExecutionContext &,
+                                         net::execution_context &>::value
+                         >::type = 0)
+            : pid_(0), handle_(context)
+    {
+    }
+
+    basic_process_handle_win(Executor executor)
+            : pid_(0), handle_(executor)
+    {
+    }
+
+    basic_process_handle_win(Executor executor, pid_type pid)
+            : pid_(pid), handle_(executor, detail::open_process_(pid))
+    {
+    }
+
+    basic_process_handle_win(Executor executor, pid_type pid, native_handle_type process_handle)
+            : pid_(pid), handle_(executor, process_handle)
+    {
+    }
+
+
+    template<typename Executor1>
+    basic_process_handle_win(basic_process_handle_win<Executor1> && other)
+            : pid_(other.pid_), handle_(std::move(other.handle_))
+    {
+      other.pid_ = static_cast<DWORD>(-1);
+    }
+
+    basic_process_handle_win(basic_process_handle_win && other)
+        :  pid_(other.pid_), handle_(std::move(other.handle_))
+    {
+      other.pid_ = static_cast<DWORD>(-1);
+    }
+
+    basic_process_handle_win& operator=(basic_process_handle_win && other)
+    {
+        pid_ = other.pid_;
+        handle_ = std::move(other.handle_);
+        other.pid_ = static_cast<DWORD>(-1);
+        return *this;
+    }
+
+    template<typename Executor1>
+    basic_process_handle_win& operator=(basic_process_handle_win<Executor1> && other)
+    {
+        pid_ = other.pid_;
+        handle_ = std::move(other.handle_);
+        other.pid_ = static_cast<DWORD>(-1);
+        return *this;
+    }
+
+    ~basic_process_handle_win()
+    {
+        if (handle_.is_open())
+        {
+            error_code ec;
+            handle_.close(ec);
+        }
+    }
+
+    native_handle_type native_handle()
+    { return handle_.native_handle(); }
+
+    pid_type id() const
+    { return pid_; }
+
+    void terminate_if_running(error_code &)
+    {
+        detail::terminate_if_running_(handle_.native_handle());
+    }
+
+    void terminate_if_running()
+    {
+        detail::terminate_if_running_(handle_.native_handle());
+    }
+
+    void wait(native_exit_code_type &exit_status, error_code &ec)
+    {
+        if (!detail::check_handle_(handle_.native_handle(), ec))
+            return;
+
+        handle_.wait(ec);
+        if (!ec)
+            detail::get_exit_code_(handle_.native_handle(), exit_status, ec);
+    }
+
+
+    void wait(native_exit_code_type &exit_status)
+    {
+        error_code ec;
+        wait(exit_status, ec);
+        if (ec)
+            detail::throw_error(ec, "wait(pid)");
+    }
+
+    void interrupt(error_code &ec)
+    {
+        if (!detail::check_pid_(pid_, ec))
+            return;
+
+        detail::interrupt_(pid_, ec);
+    }
+
+    void interrupt()
+    {
+        error_code ec;
+        interrupt(ec);
+        if (ec)
+            detail::throw_error(ec, "interrupt");
+    }
+
+    void request_exit(error_code &ec)
+    {
+        if (!detail::check_pid_(pid_, ec))
+            return;
+        detail::request_exit_(pid_, ec);
+    }
+
+    void request_exit()
+    {
+        error_code ec;
+        request_exit(ec);
+        if (ec)
+            detail::throw_error(ec, "request_exit");
+    }
+
+    void suspend(error_code &ec)
+    {
+        detail::suspend_(handle_.native_handle(), ec);
+    }
+
+    void suspend()
+    {
+        error_code ec;
+        suspend(ec);
+        if (ec)
+            detail::throw_error(ec, "suspend");
+    }
+
+    void resume(error_code &ec)
+    {
+        detail::resume_(handle_.native_handle(), ec);
+    }
+
+    void resume()
+    {
+        error_code ec;
+        resume(ec);
+        if (ec)
+            detail::throw_error(ec, "resume");
+    }
+
+    void terminate(native_exit_code_type &exit_status, error_code &ec)
+    {
+        if (!detail::check_handle_(handle_.native_handle(), ec))
+            return;
+
+        detail::terminate_(handle_.native_handle(), ec, exit_status);
+        if (!ec)
+            wait(exit_status, ec);
+
+    }
+
+    void terminate(native_exit_code_type &exit_status)
+    {
+        error_code ec;
+        terminate(exit_status, ec);
+        if (ec)
+            detail::throw_error(ec, "terminate");
+    }
+
+    bool running(native_exit_code_type &exit_code, error_code & ec)
+    {
+        if (!detail::check_handle_(handle_.native_handle(), ec))
+            return false;
+
+        native_exit_code_type code;
+        //single value, not needed in the winapi.
+        detail::check_running_(handle_.native_handle(), ec, code);
+        if (ec)
+            return false;
+
+        if (process_is_running(code))
+            return true;
+        else
+            exit_code = code;
+
+        return false;
+    }
+
+    bool running(native_exit_code_type &exit_code)
+    {
+        error_code ec;
+        bool res = running(exit_code, ec);
+        if (ec)
+            detail::throw_error(ec, "is_running");
+        return res;
+    }
+
+    bool is_open() const
+    {
+        return handle_.is_open();
+    }
+
+    template<typename>
+    friend struct basic_process_handle_win;
+  private:
+    pid_type pid_;
+    handle_type handle_;
+
+    struct async_wait_op_
+    {
+        handle_type &handle;
+        native_exit_code_type & exit_code;
+        template<typename Self>
+        void operator()(Self &&self)
+        {
+
+            self.reset_cancellation_state(asio::enable_total_cancellation());
+            auto sl = self.get_cancellation_state().slot();
+            auto & h = handle;
+            if (sl.is_connected())
+                sl.assign(
+                    [&h](asio::cancellation_type ct)
+                    {
+                      error_code ec;
+                      h.cancel(ec);
+                    });
+            handle.async_wait(std::move(self));
+        }
+
+        template<typename Self>
+        void operator()(Self &&self, error_code ec)
+        {
+            if (ec == asio::error::operation_aborted && !self.get_cancellation_state().cancelled())
+              return handle.async_wait(std::move(self));
+
+            if (!ec && process_is_running(exit_code)) // exit_code could be set by another call to wait.
+                detail::get_exit_code_(handle.native_handle(), exit_code, ec);
+            std::move(self).complete(ec);
+        }
+    };
+ public:
+    template<BOOST_PROCESS_V2_COMPLETION_TOKEN_FOR(void(error_code))
+             WaitHandler = net::default_completion_token_t<executor_type>>
+    auto async_wait(native_exit_code_type & exit_code,
+                    WaitHandler &&handler = net::default_completion_token_t<executor_type>())
+        -> decltype(net::async_compose<WaitHandler, void(error_code)>(
+                    async_wait_op_{handle_, exit_code}, handler, handle_))
+    {
+        return net::async_compose<WaitHandler, void(error_code)>(
+                async_wait_op_{handle_, exit_code}, handler, handle_
+        );
+    }
+};
+
+}
+
+BOOST_PROCESS_V2_END_NAMESPACE
+
+
+#endif //BOOST_PROCESS_V2_DETAIL_PROCESS_HANDLE_WINDOWS_HPP

include/boost/process/v2/detail/throw_error.hpp

@@ -0,0 +1,33 @@
+// Copyright (c) 2022 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_V2_DETAIL_THROW_ERROR_HPP
+#define BOOST_PROCESS_V2_DETAIL_THROW_ERROR_HPP
+
+#include <boost/process/v2/detail/config.hpp>
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+namespace detail
+{
+
+BOOST_PROCESS_V2_DECL void do_throw_error(const error_code& err);
+BOOST_PROCESS_V2_DECL void do_throw_error(const error_code& err, const char* location);
+
+inline void throw_error(const error_code& err)
+{
+    if (err)
+        do_throw_error(err);
+}
+
+inline void throw_error(const error_code& err, const char* location)
+{
+    if (err)
+        do_throw_error(err, location);
+}
+
+}
+BOOST_PROCESS_V2_END_NAMESPACE
+
+
+#endif //BOOST_PROCESS_V2_DETAIL_THROW_ERROR_HPP

include/boost/process/v2/detail/throw_exception.hpp

@@ -0,0 +1,39 @@
+// Copyright (c) 2022 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_V2_DETAIL_THROW_EXCEPTION_HPP
+#define BOOST_PROCESS_V2_DETAIL_THROW_EXCEPTION_HPP
+
+#include <boost/process/v2/detail/config.hpp>
+
+#if !defined(BOOST_PROCESS_V2_STANDALONE)
+
+#include <boost/throw_exception.hpp>
+
+#endif
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+namespace detail
+{
+
+#if defined(BOOST_PROCESS_V2_STANDALONE)
+
+template <typename Exception>
+inline void throw_exception(const Exception& e)
+{
+    throw e;
+}
+
+#else
+
+using boost::throw_exception;
+
+#endif
+
+}
+
+BOOST_PROCESS_V2_END_NAMESPACE
+
+#endif //BOOST_PROCESS_V2_DETAIL_THROW_EXCEPTION_HPP

include/boost/process/v2/detail/utf8.hpp

@@ -0,0 +1,94 @@
+// Copyright (c) 2022 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_V2_DETAIL_UTF8_HPP
+#define BOOST_PROCESS_V2_DETAIL_UTF8_HPP
+
+#include <boost/process/v2/detail/config.hpp>
+#include <boost/process/v2/detail/throw_error.hpp>
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+namespace detail
+{
+
+BOOST_PROCESS_V2_DECL std::size_t size_as_utf8(const wchar_t * in, std::size_t size, error_code & ec);
+BOOST_PROCESS_V2_DECL std::size_t size_as_wide(const  char   * in, std::size_t size, error_code & ec);
+
+BOOST_PROCESS_V2_DECL std::size_t convert_to_utf8(const wchar_t * in, std::size_t size, 
+                                                   char   * out, std::size_t max_size, error_code & ec);
+BOOST_PROCESS_V2_DECL std::size_t convert_to_wide(const  char   * in, std::size_t size,  
+                                                  wchar_t * out, std::size_t max_size, error_code & ec);
+
+template<typename CharOut, typename Traits = std::char_traits<CharOut>, 
+         typename Allocator = std::allocator<CharOut>, typename CharIn,
+         typename = typename std::enable_if<std::is_same<CharOut, CharIn>::value>::type> 
+std::basic_string<CharOut, Traits, Allocator> conv_string(
+    const CharIn * data, std::size_t size, 
+    const Allocator allocator = Allocator{})
+{
+    return std::basic_string<CharOut, Traits, Allocator>(data, size, allocator);
+}
+
+
+template<typename CharOut, typename Traits = std::char_traits<CharOut>, 
+         typename Allocator = std::allocator<CharOut>,
+         typename = typename std::enable_if<std::is_same<CharOut, char>::value>::type> 
+std::basic_string<CharOut, Traits, Allocator> conv_string(
+    const wchar_t * data, std::size_t size, 
+    const Allocator allocator = Allocator{})
+{
+    error_code ec;
+    const auto req_size = size_as_utf8(data, size, ec);
+    if (ec)
+        detail::throw_error(ec, "size_as_utf8");
+
+
+    std::basic_string<CharOut, Traits, Allocator> res(allocator);
+    res.resize(req_size);
+
+    if (req_size == 0)
+        return res;
+
+
+    auto res_size = convert_to_utf8(data, size, &res.front(), req_size,  ec);
+    if (ec)
+        detail::throw_error(ec, "convert_to_utf8");
+
+    res.resize(res_size);
+    return res;
+}
+
+template<typename CharOut, typename Traits = std::char_traits<CharOut>, 
+         typename Allocator = std::allocator<CharOut>,
+         typename = typename std::enable_if<std::is_same<CharOut, wchar_t>::value>::type> 
+std::basic_string<CharOut, Traits, Allocator> conv_string(
+    const char * data, std::size_t size, 
+    const Allocator allocator = Allocator{})
+{
+    error_code ec;
+    const auto req_size = size_as_wide(data, size, ec);
+    if (ec)
+        detail::throw_error(ec, "size_as_wide");
+
+    std::basic_string<CharOut, Traits, Allocator> res(allocator);
+    res.resize(req_size);
+
+    if (req_size == 0)
+        return res;
+
+    auto res_size = convert_to_wide(data, size, &res.front(), req_size,  ec);
+    if (ec)
+        detail::throw_error(ec, "convert_to_wide");
+
+    res.resize(res_size);
+    return res;
+}
+
+}
+
+BOOST_PROCESS_V2_END_NAMESPACE
+
+
+#endif //BOOST_PROCESS_V2_DETAIL_UTF8_HPP