* In GRAS, using globals is forbidden since the "processes" will
* sometimes run as a thread inside the same process (namely, in
* simulation mode). So, you have to put all globals in a structure, and
* In GRAS, using globals is forbidden since the "processes" will
* sometimes run as a thread inside the same process (namely, in
* simulation mode). So, you have to put all globals in a structure, and