On Feb 16 23:33, Lionel Cons via Cygwin wrote: > On Sun, 16 Feb 2025 at 22:47, Mark Geisert <m...@maxrnd.com> wrote: > > > > In the doc tree, change the title of section "Other UNIX system > > interfaces..." to "Other system interfaces...". Add the spawn family of > > functions noting their origin as Windows. > > re spawn() family: Cygwin posix_spawn() seems to rely on the rather > inefficient vfork(), while Opengroup intended it to be an API to > Windows spawn(). > > Is there a technical limitation why Cygwin posix_spawn() cannot use > WinAPI spawn() directly?
The requirements of posix_spawn and their helper functions are so that we can't easily fulfill them without doing the fork/exec twist. See https://man7.org/linux/man-pages/man3/posix_spawn.3.html. Windows CreateProcess() is not quite the same as Linux clone(). However, if you think you can come up with a version only running the spawnve function and thus speed up Cygwin, feel free to send patches. Corinna -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
