friendica/include/cronhooks.php

<?php

require_once("boot.php");


function cronhooks_run(&$argv, &$argc){
	global $a, $db;

	if(is_null($a)) {
		$a = new App;
	}

	if(is_null($db)) {
		@include(".htconfig.php");
		require_once("include/dba.php");
		$db = new dba($db_host, $db_user, $db_pass, $db_data);
		unset($db_host, $db_user, $db_pass, $db_data);
	};

	require_once('include/session.php');
	require_once('include/datetime.php');
	require_once('include/pidfile.php');

	load_config('config');
	load_config('system');

	$maxsysload = intval(get_config('system','maxloadavg'));
	if($maxsysload < 1)
		$maxsysload = 50;
	if(function_exists('sys_getloadavg')) {
		$load = sys_getloadavg();
		if(intval($load[0]) > $maxsysload) {
			logger('system: load ' . $load[0] . ' too high. Cronhooks deferred to next scheduled run.');
			return;
		}
	}

	$last = get_config('system','last_cronhook');

	$poll_interval = intval(get_config('system','cronhook_interval'));
	if(! $poll_interval)
		$poll_interval = 9;

	if($last) {
		$next = $last + ($poll_interval * 60);
		if($next > time()) {
			logger('cronhook intervall not reached');
			return;
		}
	}

	$lockpath = get_lockpath();
	if ($lockpath != '') {
		$pidfile = new pidfile($lockpath, 'cronhooks');
		if($pidfile->is_already_running()) {
			logger("cronhooks: Already running");
			if ($pidfile->running_time() > 19*60) {
				$pidfile->kill();
				logger("cronhooks: killed stale process");
				// Calling a new instance
				proc_run('php','include/cronhooks.php');
			}
			exit;
		}
	}

	$a->set_baseurl(get_config('system','url'));

	load_hooks();

	logger('cronhooks: start');

	$d = datetime_convert();

	call_hooks('cron', $d);

	logger('cronhooks: end');

	set_config('system','last_cronhook', time());

	return;
}

if (array_search(__file__,get_included_files())===0){
	cronhooks_run($_SERVER["argv"],$_SERVER["argc"]);
	killme();
}