+/**
+ * @brief fix the queue entry if the worker process died
+ *
+ */
+function poller_kill_stale_workers() {
+ $r = q("SELECT `pid`, `executed` FROM `workerqueue` WHERE `executed` != '0000-00-00 00:00:00'");
+ foreach($r AS $pid)
+ if (!posix_kill($pid["pid"], 0))
+ q("UPDATE `workerqueue` SET `executed` = '0000-00-00 00:00:00', `pid` = 0 WHERE `pid` = %d",
+ intval($pid["pid"]));
+ else {
+ // Kill long running processes
+ $duration = (time() - strtotime($pid["executed"])) / 60;
+ if ($duration > 180) {
+ logger("Worker process ".$pid["pid"]." took more than 3 hours. It will be killed now.");
+ posix_kill($pid["pid"], SIGTERM);
+
+ // Question: If a process is stale: Should we remove it or should we reschedule it?
+ // By now we rescheduling it. It's maybe not the wisest decision?
+ q("UPDATE `workerqueue` SET `executed` = '0000-00-00 00:00:00', `pid` = 0 WHERE `pid` = %d",
+ intval($pid["pid"]));
+ } else
+ logger("Worker process ".$pid["pid"]." now runs for ".round($duration)." minutes. That's okay.", LOGGER_DEBUG);
+ }
+}
+
+function poller_too_much_workers($stage) {