+class Poll {
+ function lock_data()
+ {
+ GLOBAL $sess;
+
+ if (($tok = @ftok(FTOK_PATH."/poll", "B")) == -1) {
+ return (FALSE);
+ }
+ // echo "FTOK ".$tok."<br>";
+ if (($res = sem_get($tok)) == FALSE) {
+ return (FALSE);
+ }
+ if (sem_acquire($res)) {
+ log_lock("LOCK poll");
+ return ($res);
+ }
+ else
+ return (FALSE);
+ }