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GSIGNAL(3) Linux Programmer's Manual GSIGNAL(3)
NAME
gsignal, ssignal - software signal facility
SYNOPSIS
#include <signal.h>
typedef void (*sighandler_t)(int);
int gsignal(signum);
sighandler_t ssignal(int signum, sighandler_t action);
DESCRIPTION
Don't use these functions under Linux. Due to a historical mistake,
under Linux these functions are aliases for raise() and signal(),
respectively.
Elsewhere, on System V-like systems, these functions implement software
signalling, entirely independent of the classical signal and kill func-
tions. The function ssignal() defines the action to take when the soft-
ware signal with number signum is raised using the function gsignal(),
and returns the previous such action or SIG_DFL. The function gsig-
nal() does the following: if no action (or the action SIG_DFL) was
specified for signum, then it does nothing and returns 0. If the
action SIG_IGN was specified for signum, then it does nothing and
returns 1. Otherwise, it resets the action to SIG_DFL and calls the
action function with parameter signum, and returns the value returned
by that function. The range of possible values signum varies (often
1-15 or 1-17).
CONFORMING TO
These functions are available under AIX, DG/UX, HP-UX, SCO, Solaris,
Tru64. They are called obsolete under most of these systems, and are
broken under Linux libc and glibc. Some systems also have gsignal_r()
and ssignal_r().
SEE ALSO
kill(2), signal(2), raise(3)
notGNU 2002-08-25 GSIGNAL(3)
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Sat Sep 8 16:38:00 GMT 2007
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