On most systems, you simply have a flat chunk of RAM available which dlmalloc and other higher level pieces will manage. This very basic low-level memory management simply tracks that and provides a standard Unix(tm) style sbrk() function call. This effectively abstracts the address space.
Eventually we'll probably have functions for both getting and setting the time, but for now there's just one to retrieve it.
Returns the current day/time in *nix "seconds since 1970" format.