NAME
Sys::Signal - Set signal handlers with restoration of existing C
sighandler
SYNOPSIS
use Sys::Signal ();
eval {
my $h = Sys::Signal->set(ALRM => sub { die "timeout\n" });
alarm $timeout;
... do something thay may timeout ...
alarm 0;
};
die $@ if $@;
DESCRIPTION
The *Sys::Signal* *set* method works much like `local $SIG{FOO}', but
with the added functionality of restoring the underlying signal handler
to the previous C function, rather than Perl's. Unless, of course,
Perl's C signal handler was the previous handler.
