gipc.py 文件源码

def _winapi_childhandle_after_createprocess_child(self):
        """Called on Windows in the child process after the CreateProcess()
        system call. This is required for making the handle usable in the child.
        """
        if WINAPI_HANDLE_TRANSFER_STEAL:
            # In this case the handle has not been inherited by the child
            # process during CreateProcess(). Steal it from the parent.
            new_winapihandle = multiprocessing.reduction.steal_handle(
                self._parent_pid, self._parent_winapihandle)
            del self._parent_winapihandle
            del self._parent_pid
            # Restore C file descriptor with (read/write)only flag.
            self._fd = msvcrt.open_osfhandle(new_winapihandle, self._fd_flag)
            return
        # In this case the handle has been inherited by the child process during
        # the CreateProcess() system call. Get C file descriptor from Windows
        # file handle.
        self._fd = msvcrt.open_osfhandle(
            self._inheritable_winapihandle, self._fd_flag)
        del self._inheritable_winapihandle