2 if (!file_exists("boot.php") AND (sizeof($_SERVER["argv"]) != 0)) {
3 $directory = dirname($_SERVER["argv"][0]);
5 if (substr($directory, 0, 1) != "/")
6 $directory = $_SERVER["PWD"]."/".$directory;
8 $directory = realpath($directory."/..");
13 require_once("boot.php");
15 function poller_run(&$argv, &$argc){
23 @include(".htconfig.php");
24 require_once("include/dba.php");
25 $db = new dba($db_host, $db_user, $db_pass, $db_data);
26 unset($db_host, $db_user, $db_pass, $db_data);
29 if(function_exists('sys_getloadavg')) {
30 $maxsysload = intval(get_config('system','maxloadavg'));
34 $load = sys_getloadavg();
35 if(intval($load[0]) > $maxsysload) {
36 logger('system: load ' . $load[0] . ' too high. poller deferred to next scheduled run.');
41 // Checking the number of workers
42 if (poller_too_much_workers(1))
45 if(($argc <= 1) OR ($argv[1] != "no_cron")) {
46 // Run the cron job that calls all other jobs
47 proc_run("php","include/cron.php");
49 // Run the cronhooks job separately from cron for being able to use a different timing
50 proc_run("php","include/cronhooks.php");
52 // Cleaning dead processes
53 $r = q("SELECT DISTINCT(`pid`) FROM `workerqueue` WHERE `executed` != '0000-00-00 00:00:00'");
55 if (!posix_kill($pid["pid"], 0))
56 q("UPDATE `workerqueue` SET `executed` = '0000-00-00 00:00:00', `pid` = 0 WHERE `pid` = %d",
59 // To-Do: Kill long running processes
60 // But: Update processes (like the database update) mustn't be killed
64 // Sleep four seconds before checking for running processes again to avoid having too many workers
67 // Checking number of workers
68 if (poller_too_much_workers(2))
73 while ($r = q("SELECT * FROM `workerqueue` WHERE `executed` = '0000-00-00 00:00:00' ORDER BY `created` LIMIT 1")) {
75 q("UPDATE `workerqueue` SET `executed` = '%s', `pid` = %d WHERE `id` = %d AND `executed` = '0000-00-00 00:00:00'",
76 dbesc(datetime_convert()),
80 // Assure that there are no tasks executed twice
81 $id = q("SELECT `id` FROM `workerqueue` WHERE `id` = %d AND `pid` = %d",
85 logger("Queue item ".$r[0]["id"]." was executed multiple times - skip this execution", LOGGER_DEBUG);
89 $argv = json_decode($r[0]["parameter"]);
93 // Check for existance and validity of the include file
96 if (!validate_include($include)) {
97 logger("Include file ".$argv[0]." is not valid!");
98 q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($r[0]["id"]));
102 require_once($include);
104 $funcname=str_replace(".php", "", basename($argv[0]))."_run";
106 if (function_exists($funcname)) {
107 logger("Process ".getmypid()." - ID ".$r[0]["id"].": ".$funcname." ".$r[0]["parameter"]);
108 $funcname($argv, $argc);
110 logger("Process ".getmypid()." - ID ".$r[0]["id"].": ".$funcname." - done");
112 q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($r[0]["id"]));
114 logger("Function ".$funcname." does not exist");
116 // Quit the poller once every hour
117 if (time() > ($starttime + 3600))
120 // Count active workers and compare them with a maximum value that depends on the load
121 if (poller_too_much_workers(3))
127 function poller_too_much_workers($stage) {
129 $queues = get_config("system", "worker_queues");
134 $active = poller_active_workers();
136 // Decrease the number of workers at higher load
137 if(function_exists('sys_getloadavg')) {
138 $load = max(sys_getloadavg());
140 $maxsysload = intval(get_config('system','maxloadavg'));
144 $maxworkers = $queues;
146 // Some magical mathemathics to reduce the workers
148 $slope = $maxworkers / pow($maxsysload, $exponent);
149 $queues = ceil($slope * pow(max(0, $maxsysload - $load), $exponent));
151 logger("Current load stage ".$stage.": ".$load." - maximum: ".$maxsysload." - current queues: ".$active." - maximum: ".$queues, LOGGER_DEBUG);
155 return($active >= $queues);
158 function poller_active_workers() {
159 $workers = q("SELECT COUNT(*) AS `workers` FROM `workerqueue` WHERE `executed` != '0000-00-00 00:00:00'");
161 return($workers[0]["workers"]);
164 if (array_search(__file__,get_included_files())===0){
165 poller_run($_SERVER["argv"],$_SERVER["argc"]);