Simply a replacement for time_t. It has been deprecated since it is not equivalent to time_t on 64-bit platforms with a 64-bit time_t. Unrelated to glib.Timer
Note that GTime is defined to always be a 32-bit integer, unlike time_t which may be 64-bit on some systems. Therefore, GTime will overflow in the year 2038, and you cannot use the address of a GTime variable as argument to the UNIX time() function.
Instead, do the following:
time_t ttime; GTime gtime; time (&ttime); gtime = (GTime)ttime;