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

s
sigstack(2) sigstack(2)
(TO BE OBSOLETED)
the signal stack is SIGSTKSZ as found in
<signal.h> . An implementation that would like to specify a
signal stack size other than
SIGSTKSZ should use
sigaltstack().
Programs should not use
longjmp() to leave a signal handler that is running on a stack established with
sigstack() . Doing so may disable future use of the signal stack. For abnormal exit from a signal
handler, siglongjmp() , setcontext() ,orswapcontext()
may be used. These functions fully
support switching from one stack to another.
The
sigstack() function requires the application to have knowledge of the underlying system’s stack
architecture. For this reason,
sigaltstack()
is recommended over this function.
Threads Considerations
Each thread may define an alternate signal handling stack.
LWP (Lightweight Processes) Considerations
Each LWP may define an alternate signal handling stack.
SEE ALSO
exec(2), fork(2), setjmp(3C), sigaltstack(2), <signal.h>.
CHANGE HISTORY
First released in Issue 4, Version 2.
HP-UX 11i Version 1: September 2005 − 2 − Hewlett-Packard Company Section 2−−387