handlers for g_timeout_add and g_idle_add different threads?

[Al Hooton <al hootons org>]

        Quick question:  I've read through all the stuff I can find on the glib
main loop support for timeout handlers and idle handlers, but there's a
simple question I have:

- Do either, or both. of these types of handlers get run in a different
thread, or are they run out of the mainloop/GMainContext the
g_timeout_add and g_idle_add routines were called in to add them?

        Thanks!

-Al