[users@httpd] How to detect a non-graceful restart of Apache

[SAILESH KRISHNAMURTI, BLOOMBERG/ 731 LEXIN]

Hi, I have a requirement wherin application owners would like to be notified if 
apache is restarted non-gracefully, since there might be impact to user 
sessions etc... Is there any way to detect and report this, hopefully without 
compiling additional modules? thanks