HP-UX Reference (11i v1 00/12) - 2 System Calls (vol 5)

__________________________________________________________________________________________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________________________________________________________________________________________
STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man2/!!!intro.2
________________________________________________________________
___ ___
v
vfork(2) vfork(2)
Series 800
Process times for the parent and child processes within the [vfork,exec] window may be inaccurate.
Parent and child processes share the same stack space within the [vfork,exec] window. If the size
of the stack has been changed within this window by the child process (return from or call to a func-
tion, for example), it is likely that the parent and child processes will be killed with signal SIGSEGV
or SIGBUS.
In the [vfork,exec] window, a call to signal() (see signal(2) that installs a catching function
can affect handling of the signal by the parent. The parent is not affected if the handling is being set
to SIG_DFL or SIG_IGN, or if either sigaction() or sigvector() is used (see sigaction(2)
and sigvector(2)).
AUTHOR
vfork() was developed by the University of California, Berkeley.
SEE ALSO
exec(2), exit(2), fork(2), wait(2).
HP-UX Release 11i: December 2000 − 2 − Section 2−−445
___
___