On 4/24/2020 3:30 AM, Kristian Ivarsson via Cygwin wrote:
Hi all
We're having a rather complex application and have noticed a rather weird
behaviour that I cannot find any information about
We're using posix_spawnp and sometimes it creates extra "ghost-process(es)"
non visible to cygwin (via e.g. process status (ps)) but visible to Windows
(Task Manager)
The function doesn't fail and it doesn't report any error, but sometimes
(hard to reproduce deterministically) it creates one, or more, extra
processes of the same binary
Have anyone noticed and/or have some information/ideas about this ?
Cygwin's posix_spawn uses execve under the hood. The latter creates a new
Windows process, does some housekeeping, and then transfers control from the old
process to the new one. There will be a short period of time when both
processes exist from the Windows point of view.
Ken
--
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
