https://mail.gnome.org/archives/commits-list/2011-August/msg09048.html
[glib] Make GMainLoop, GMainContext and GSource boxed types
glibmakegsourceboxedtypes
https://mail.gnome.org/archives/gtk-list/2003-May/msg00036.html
Re: GLIB - GMainLoop and Timeouts
glibtimeouts