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  1. or download this
     $sth->stuff();
 #NOT return unless $timeleft;
 #if i'm here, I do not need to return, I can go on
  2. or download this
    local $SIG{ALRM}=sub { 
 return;  #IE, when ALRM strikes
...
alarm 10;#
$sth->stuff();
alarm 0;# if I'm here, I can safely continue
  3. or download this
    sub sth($$) {
$SIG{ALRM}=sub { 
...
SUBEND:
return;
}