Start Xulrunner from custom C/C++ app

Hello,

I was wondering if it would be possible to start/stop xulrunner from an
external application (e.g.: simple C/C++ wrapper). My main objective to
this approach, is to be able to stop xulrunner, update the application file
and relaunch it.  I've been attempting to use the information from this
post https://wiki.mozilla.org/Embedding/NewApi to try it out, however I
keep running into errors. By the date that post was last edited, I think it
might be outdated :/. Also, I've read somewhere (can't recall where
exactly) that embedding would be discontinued in future versions, leaving
me a bit uncertain as to the viability of this approach.

Regards,

Leander