HP-UX Reference (11i v1 05/09) - 2 System Calls (vol 5)

s
sigspace(2) sigspace(2)
LWP (Lightweight Processes) Considerations
Each LWP may define an alternate signal handling stack.
AUTHOR
sigspace() was developed by HP.
SEE ALSO
sigaction(2), sigstack(2), sigvector(2), malloc(3C), setjmp(3C).
HP-UX 11i Version 1: September 2005 − 2 − Hewlett-Packard Company Section 2−−385