7.3.4. Signal and event handling

The SIGIO signal handler (ioHandler) is declared static as noted above. The static instList of type Fd2Inst points to the list of mappings from file descriptor to class instance.

The SystemC event used to signal when input is available is pointed to by ioEvent.

	Caution
It is essential that the event is declared as a pointer. If the event itself were declared here, it would be available at elaboration, and would crash the system (try it!). The solution is to declare the pointer and allocate the event instance dynamically when the xterm is created. The memory can be freed from the destructor on termination.

Caution

It is essential that the event is declared as a pointer. If the event itself were declared here, it would be available at elaboration, and would crash the system (try it!).

The solution is to declare the pointer and allocate the event instance dynamically when the xterm is created. The memory can be freed from the destructor on termination.