https://www.qnx.com/developers/docs/8.0/com.qnx.doc.neutrino.lib_ref/topic/i/inotify_qnx_ext.html
Enable QNX OS-specific extensions to the inotify interface
inotifyqnxext
https://rpmfind.net/linux/RPM/epel/10.2/s390x/Packages/i/inotify-tools-devel-4.23.9.0-4.el10_1.s390x.html
inotify toolsdevel
https://www.php.net/manual/de/function.inotify-queue-len.php
Return a number upper than zero if there are pending events
phpinotifyqueuelenmanual