+ /**
+ * @brief Checks if the site is called via a backend process
+ *
+ * This isn't a perfect solution. But we need this check very early.
+ * So we cannot wait until the modules are loaded.
+ *
+ * @return bool Is it a known backend?
+ */
+ function is_backend() {
+ $backend = array();
+ $backend[] = "_well_known";
+ $backend[] = "api";
+ $backend[] = "dfrn_notify";
+ $backend[] = "fetch";
+ $backend[] = "hcard";
+ $backend[] = "hostxrd";
+ $backend[] = "nodeinfo";
+ $backend[] = "noscrape";
+ $backend[] = "p";
+ $backend[] = "poco";
+ $backend[] = "post";
+ $backend[] = "proxy";
+ $backend[] = "pubsub";
+ $backend[] = "pubsubhubbub";
+ $backend[] = "receive";
+ $backend[] = "rsd_xml";
+ $backend[] = "salmon";
+ $backend[] = "statistics_json";
+ $backend[] = "xrd";
+
+ if (in_array($this->module, $backend))
+ return(true);
+ else
+ return($this->backend);
+ }
+
+ /**
+ * @brief Checks if the maximum number of database processes is reached
+ *
+ * @return bool Is the limit reached?
+ */
+ function max_processes_reached() {
+
+ // Is the function called statically?
+ if (!is_object($this))
+ return(self::$a->max_processes_reached());
+
+ if ($this->is_backend()) {
+ $process = "backend";
+ $max_processes = get_config('system', 'max_processes_backend');
+ if (intval($max_processes) == 0)
+ $max_processes = 5;
+ } else {
+ $process = "frontend";
+ $max_processes = get_config('system', 'max_processes_frontend');
+ if (intval($max_processes) == 0)
+ $max_processes = 20;
+ }
+
+ $processlist = dbm::processlist();
+ if ($processlist["list"] != "") {
+ logger("Processcheck: Processes: ".$processlist["amount"]." - Processlist: ".$processlist["list"], LOGGER_DEBUG);
+
+ if ($processlist["amount"] > $max_processes) {
+ logger("Processcheck: Maximum number of processes for ".$process." tasks (".$max_processes.") reached.", LOGGER_DEBUG);
+ return true;
+ }
+ }
+ return false;
+ }
+