include/poller.php

   1 <?php
   2
   3 use Friendica\App;
   4 use Friendica\Core\Config;
   5
   6 if (!file_exists("boot.php") AND (sizeof($_SERVER["argv"]) != 0)) {
   7         $directory = dirname($_SERVER["argv"][0]);
   8
   9         if (substr($directory, 0, 1) != "/")
  10                 $directory = $_SERVER["PWD"]."/".$directory;
  11
  12         $directory = realpath($directory."/..");
  13
  14         chdir($directory);
  15 }
  16
  17 require_once("boot.php");
  18
  19 function poller_run($argv, $argc){
  20         global $a, $db;
  21
  22         if(is_null($a)) {
  23                 $a = new App;
  24         }
  25
  26         if(is_null($db)) {
  27                 @include(".htconfig.php");
  28                 require_once("include/dba.php");
  29                 $db = new dba($db_host, $db_user, $db_pass, $db_data);
  30                 unset($db_host, $db_user, $db_pass, $db_data);
  31         };
  32
  33         Config::load();
  34
  35         // Quit when in maintenance
  36         if (Config::get('system', 'maintenance', true)) {
  37                 return;
  38         }
  39
  40         $a->set_baseurl(Config::get('system', 'url'));
  41
  42         load_hooks();
  43
  44         $a->start_process();
  45
  46         if ($a->min_memory_reached()) {
  47                 return;
  48         }
  49
  50         if (poller_max_connections_reached()) {
  51                 return;
  52         }
  53
  54         if ($a->maxload_reached()) {
  55                 return;
  56         }
  57
  58         if(($argc <= 1) OR ($argv[1] != "no_cron")) {
  59                 poller_run_cron();
  60         }
  61
  62         if ($a->max_processes_reached()) {
  63                 return;
  64         }
  65
  66         // Checking the number of workers
  67         if (poller_too_much_workers()) {
  68                 poller_kill_stale_workers();
  69                 return;
  70         }
  71
  72         $starttime = time();
  73
  74         while ($r = poller_worker_process()) {
  75
  76                 // Check free memory
  77                 if ($a->min_memory_reached()) {
  78                         return;
  79                 }
  80
  81                 // Count active workers and compare them with a maximum value that depends on the load
  82                 if (poller_too_much_workers()) {
  83                         return;
  84                 }
  85
  86                 if (!poller_execute($r[0])) {
  87                         return;
  88                 }
  89
  90                 // Quit the poller once every hour
  91                 if (time() > ($starttime + 3600))
  92                         return;
  93         }
  94
  95 }
  96
  97 /**
  98  * @brief Execute a worker entry
  99  *
 100  * @param array $queue Workerqueue entry
 101  *
 102  * @return boolean "true" if further processing should be stopped
 103  */
 104 function poller_execute($queue) {
 105
 106         $a = get_app();
 107
 108         $mypid = getmypid();
 109
 110         // Quit when in maintenance
 111         if (Config::get('system', 'maintenance', true)) {
 112                 return false;
 113         }
 114
 115         // Constantly check the number of parallel database processes
 116         if ($a->max_processes_reached()) {
 117                 return false;
 118         }
 119
 120         // Constantly check the number of available database connections to let the frontend be accessible at any time
 121         if (poller_max_connections_reached()) {
 122                 return false;
 123         }
 124
 125         $upd = q("UPDATE `workerqueue` SET `executed` = '%s', `pid` = %d WHERE `id` = %d AND `pid` = 0",
 126                 dbesc(datetime_convert()),
 127                 intval($mypid),
 128                 intval($queue["id"]));
 129
 130         if (!$upd) {
 131                 logger("Couldn't update queue entry ".$queue["id"]." - skip this execution", LOGGER_DEBUG);
 132                 q("COMMIT");
 133                 return true;
 134         }
 135
 136         // Assure that there are no tasks executed twice
 137         $id = q("SELECT `pid`, `executed` FROM `workerqueue` WHERE `id` = %d", intval($queue["id"]));
 138         if (!$id) {
 139                 logger("Queue item ".$queue["id"]." vanished - skip this execution", LOGGER_DEBUG);
 140                 q("COMMIT");
 141                 return true;
 142         } elseif ((strtotime($id[0]["executed"]) <= 0) OR ($id[0]["pid"] == 0)) {
 143                 logger("Entry for queue item ".$queue["id"]." wasn't stored - skip this execution", LOGGER_DEBUG);
 144                 q("COMMIT");
 145                 return true;
 146         } elseif ($id[0]["pid"] != $mypid) {
 147                 logger("Queue item ".$queue["id"]." is to be executed by process ".$id[0]["pid"]." and not by me (".$mypid.") - skip this execution", LOGGER_DEBUG);
 148                 q("COMMIT");
 149                 return true;
 150         }
 151         q("COMMIT");
 152
 153         $argv = json_decode($queue["parameter"]);
 154
 155         // Check for existance and validity of the include file
 156         $include = $argv[0];
 157
 158         if (!validate_include($include)) {
 159                 logger("Include file ".$argv[0]." is not valid!");
 160                 q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($queue["id"]));
 161                 return true;
 162         }
 163
 164         require_once($include);
 165
 166         $funcname = str_replace(".php", "", basename($argv[0]))."_run";
 167
 168         if (function_exists($funcname)) {
 169
 170                 poller_exec_function($queue, $funcname, $argv);
 171
 172                 q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($queue["id"]));
 173         } else {
 174                 logger("Function ".$funcname." does not exist");
 175         }
 176
 177         return true;
 178 }
 179
 180 /**
 181  * @brief Execute a function from the queue
 182  *
 183  * @param array $queue Workerqueue entry
 184  * @param string $funcname name of the function
 185  * @param array $argv Array of values to be passed to the function
 186  */
 187 function poller_exec_function($queue, $funcname, $argv) {
 188
 189         $a = get_app();
 190
 191         $mypid = getmypid();
 192
 193         $argc = count($argv);
 194
 195         logger("Process ".$mypid." - Prio ".$queue["priority"]." - ID ".$queue["id"].": ".$funcname." ".$queue["parameter"]);
 196
 197         $stamp = (float)microtime(true);
 198
 199         // We use the callstack here to analyze the performance of executed worker entries.
 200         // For this reason the variables have to be initialized.
 201         if (Config::get("system", "profiler")) {
 202                 $a->performance["start"] = microtime(true);
 203                 $a->performance["database"] = 0;
 204                 $a->performance["database_write"] = 0;
 205                 $a->performance["network"] = 0;
 206                 $a->performance["file"] = 0;
 207                 $a->performance["rendering"] = 0;
 208                 $a->performance["parser"] = 0;
 209                 $a->performance["marktime"] = 0;
 210                 $a->performance["markstart"] = microtime(true);
 211                 $a->callstack = array();
 212         }
 213
 214         // For better logging create a new process id for every worker call
 215         // But preserve the old one for the worker
 216         $old_process_id = $a->process_id;
 217         $a->process_id = uniqid("wrk", true);
 218
 219         $funcname($argv, $argc);
 220
 221         $a->process_id = $old_process_id;
 222
 223         $duration = number_format(microtime(true) - $stamp, 3);
 224
 225         if ($duration > 3600) {
 226                 logger("Prio ".$queue["priority"].": ".$queue["parameter"]." - longer than 1 hour (".round($duration/60, 3).")", LOGGER_DEBUG);
 227         } elseif ($duration > 600) {
 228                 logger("Prio ".$queue["priority"].": ".$queue["parameter"]." - longer than 10 minutes (".round($duration/60, 3).")", LOGGER_DEBUG);
 229         } elseif ($duration > 300) {
 230                 logger("Prio ".$queue["priority"].": ".$queue["parameter"]." - longer than 5 minutes (".round($duration/60, 3).")", LOGGER_DEBUG);
 231         } elseif ($duration > 120) {
 232                 logger("Prio ".$queue["priority"].": ".$queue["parameter"]." - longer than 2 minutes (".round($duration/60, 3).")", LOGGER_DEBUG);
 233         }
 234
 235         logger("Process ".$mypid." - Prio ".$queue["priority"]." - ID ".$queue["id"].": ".$funcname." - done in ".$duration." seconds.");
 236
 237         // Write down the performance values into the log
 238         if (Config::get("system", "profiler")) {
 239                 $duration = microtime(true)-$a->performance["start"];
 240
 241                 if (Config::get("rendertime", "callstack")) {
 242                         if (isset($a->callstack["database"])) {
 243                                 $o = "\nDatabase Read:\n";
 244                                 foreach ($a->callstack["database"] AS $func => $time) {
 245                                         $time = round($time, 3);
 246                                         if ($time > 0)
 247                                                 $o .= $func.": ".$time."\n";
 248                                 }
 249                         }
 250                         if (isset($a->callstack["database_write"])) {
 251                                 $o .= "\nDatabase Write:\n";
 252                                 foreach ($a->callstack["database_write"] AS $func => $time) {
 253                                         $time = round($time, 3);
 254                                         if ($time > 0)
 255                                                 $o .= $func.": ".$time."\n";
 256                                 }
 257                         }
 258                         if (isset($a->callstack["network"])) {
 259                                 $o .= "\nNetwork:\n";
 260                                 foreach ($a->callstack["network"] AS $func => $time) {
 261                                         $time = round($time, 3);
 262                                         if ($time > 0)
 263                                                 $o .= $func.": ".$time."\n";
 264                                 }
 265                         }
 266                 } else {
 267                         $o = '';
 268                 }
 269
 270                 logger("ID ".$queue["id"].": ".$funcname.": ".sprintf("DB: %s/%s, Net: %s, I/O: %s, Other: %s, Total: %s".$o,
 271                         number_format($a->performance["database"] - $a->performance["database_write"], 2),
 272                         number_format($a->performance["database_write"], 2),
 273                         number_format($a->performance["network"], 2),
 274                         number_format($a->performance["file"], 2),
 275                         number_format($duration - ($a->performance["database"] + $a->performance["network"] + $a->performance["file"]), 2),
 276                         number_format($duration, 2)),
 277                         LOGGER_DEBUG);
 278         }
 279
 280         $cooldown = Config::get("system", "worker_cooldown", 0);
 281
 282         if ($cooldown > 0) {
 283                 logger("Process ".$mypid." - Prio ".$queue["priority"]." - ID ".$queue["id"].": ".$funcname." - in cooldown for ".$cooldown." seconds");
 284                 sleep($cooldown);
 285         }
 286 }
 287
 288 /**
 289  * @brief Checks if the number of database connections has reached a critical limit.
 290  *
 291  * @return bool Are more than 3/4 of the maximum connections used?
 292  */
 293 function poller_max_connections_reached() {
 294
 295         // Fetch the max value from the config. This is needed when the system cannot detect the correct value by itself.
 296         $max = Config::get("system", "max_connections");
 297
 298         // Fetch the percentage level where the poller will get active
 299         $maxlevel = Config::get("system", "max_connections_level", 75);
 300
 301         if ($max == 0) {
 302                 // the maximum number of possible user connections can be a system variable
 303                 $r = q("SHOW VARIABLES WHERE `variable_name` = 'max_user_connections'");
 304                 if ($r)
 305                         $max = $r[0]["Value"];
 306
 307                 // Or it can be granted. This overrides the system variable
 308                 $r = q("SHOW GRANTS");
 309                 if ($r)
 310                         foreach ($r AS $grants) {
 311                                 $grant = array_pop($grants);
 312                                 if (stristr($grant, "GRANT USAGE ON"))
 313                                         if (preg_match("/WITH MAX_USER_CONNECTIONS (\d*)/", $grant, $match))
 314                                                 $max = $match[1];
 315                         }
 316         }
 317
 318         // If $max is set we will use the processlist to determine the current number of connections
 319         // The processlist only shows entries of the current user
 320         if ($max != 0) {
 321                 $r = q("SHOW PROCESSLIST");
 322                 if (!dbm::is_result($r))
 323                         return false;
 324
 325                 $used = count($r);
 326
 327                 logger("Connection usage (user values): ".$used."/".$max, LOGGER_DEBUG);
 328
 329                 $level = ($used / $max) * 100;
 330
 331                 if ($level >= $maxlevel) {
 332                         logger("Maximum level (".$maxlevel."%) of user connections reached: ".$used."/".$max);
 333                         return true;
 334                 }
 335         }
 336
 337         // We will now check for the system values.
 338         // This limit could be reached although the user limits are fine.
 339         $r = q("SHOW VARIABLES WHERE `variable_name` = 'max_connections'");
 340         if (!$r)
 341                 return false;
 342
 343         $max = intval($r[0]["Value"]);
 344         if ($max == 0)
 345                 return false;
 346
 347         $r = q("SHOW STATUS WHERE `variable_name` = 'Threads_connected'");
 348         if (!$r)
 349                 return false;
 350
 351         $used = intval($r[0]["Value"]);
 352         if ($used == 0)
 353                 return false;
 354
 355         logger("Connection usage (system values): ".$used."/".$max, LOGGER_DEBUG);
 356
 357         $level = $used / $max * 100;
 358
 359         if ($level < $maxlevel)
 360                 return false;
 361
 362         logger("Maximum level (".$level."%) of system connections reached: ".$used."/".$max);
 363         return true;
 364 }
 365
 366 /**
 367  * @brief fix the queue entry if the worker process died
 368  *
 369  */
 370 function poller_kill_stale_workers() {
 371         $r = q("SELECT `pid`, `executed`, `priority`, `parameter` FROM `workerqueue` WHERE `executed` > '%s'", dbesc(NULL_DATE));
 372
 373         if (!dbm::is_result($r)) {
 374                 // No processing here needed
 375                 return;
 376         }
 377
 378         foreach ($r AS $pid) {
 379                 if (!posix_kill($pid["pid"], 0)) {
 380                         q("UPDATE `workerqueue` SET `executed` = '%s', `pid` = 0 WHERE `pid` = %d",
 381                                 dbesc(NULL_DATE), intval($pid["pid"]));
 382                 } else {
 383                         // Kill long running processes
 384
 385                         // Check if the priority is in a valid range
 386                         if (!in_array($pid["priority"], array(PRIORITY_CRITICAL, PRIORITY_HIGH, PRIORITY_MEDIUM, PRIORITY_LOW, PRIORITY_NEGLIGIBLE)))
 387                                 $pid["priority"] = PRIORITY_MEDIUM;
 388
 389                         // Define the maximum durations
 390                         $max_duration_defaults = array(PRIORITY_CRITICAL => 360, PRIORITY_HIGH => 10, PRIORITY_MEDIUM => 60, PRIORITY_LOW => 180, PRIORITY_NEGLIGIBLE => 360);
 391                         $max_duration = $max_duration_defaults[$pid["priority"]];
 392
 393                         $argv = json_decode($pid["parameter"]);
 394                         $argv[0] = basename($argv[0]);
 395
 396                         // How long is the process already running?
 397                         $duration = (time() - strtotime($pid["executed"])) / 60;
 398                         if ($duration > $max_duration) {
 399                                 logger("Worker process ".$pid["pid"]." (".implode(" ", $argv).") took more than ".$max_duration." minutes. It will be killed now.");
 400                                 posix_kill($pid["pid"], SIGTERM);
 401
 402                                 // We killed the stale process.
 403                                 // To avoid a blocking situation we reschedule the process at the beginning of the queue.
 404                                 // Additionally we are lowering the priority.
 405                                 q("UPDATE `workerqueue` SET `executed` = '%s', `created` = '%s',
 406                                                         `priority` = %d, `pid` = 0 WHERE `pid` = %d",
 407                                         dbesc(NULL_DATE),
 408                                         dbesc(datetime_convert()),
 409                                         intval(PRIORITY_NEGLIGIBLE),
 410                                         intval($pid["pid"]));
 411                         } else {
 412                                 logger("Worker process ".$pid["pid"]." (".implode(" ", $argv).") now runs for ".round($duration)." of ".$max_duration." allowed minutes. That's okay.", LOGGER_DEBUG);
 413                         }
 414                 }
 415         }
 416 }
 417
 418 /**
 419  * @brief Checks if the number of active workers exceeds the given limits
 420  *
 421  * @return bool Are there too much workers running?
 422  */
 423 function poller_too_much_workers() {
 424         $queues = Config::get("system", "worker_queues", 4);
 425
 426         $maxqueues = $queues;
 427
 428         $active = poller_active_workers();
 429
 430         // Decrease the number of workers at higher load
 431         $load = current_load();
 432         if($load) {
 433                 $maxsysload = intval(Config::get("system", "maxloadavg", 50));
 434
 435                 $maxworkers = $queues;
 436
 437                 // Some magical mathemathics to reduce the workers
 438                 $exponent = 3;
 439                 $slope = $maxworkers / pow($maxsysload, $exponent);
 440                 $queues = ceil($slope * pow(max(0, $maxsysload - $load), $exponent));
 441
 442                 $s = q("SELECT COUNT(*) AS `total` FROM `workerqueue` WHERE `executed` <= '%s'", dbesc(NULL_DATE));
 443                 $entries = $s[0]["total"];
 444
 445                 if (Config::get("system", "worker_fastlane", false) AND ($queues > 0) AND ($entries > 0) AND ($active >= $queues)) {
 446                         $s = q("SELECT `priority` FROM `workerqueue` WHERE `executed` <= '%s' ORDER BY `priority` LIMIT 1", dbesc(NULL_DATE));
 447                         $top_priority = $s[0]["priority"];
 448
 449                         $s = q("SELECT `id` FROM `workerqueue` WHERE `priority` <= %d AND `executed` > '%s' LIMIT 1",
 450                                 intval($top_priority), dbesc(NULL_DATE));
 451                         $high_running = dbm::is_result($s);
 452
 453                         if (!$high_running AND ($top_priority > PRIORITY_UNDEFINED) AND ($top_priority < PRIORITY_NEGLIGIBLE)) {
 454                                 logger("There are jobs with priority ".$top_priority." waiting but none is executed. Open a fastlane.", LOGGER_DEBUG);
 455                                 $queues = $active + 1;
 456                         }
 457                 }
 458
 459                 // Create a list of queue entries grouped by their priority
 460                 $running = array(PRIORITY_CRITICAL => 0,
 461                                 PRIORITY_HIGH => 0,
 462                                 PRIORITY_MEDIUM => 0,
 463                                 PRIORITY_LOW => 0,
 464                                 PRIORITY_NEGLIGIBLE => 0);
 465
 466                 $r = q("SELECT COUNT(*) AS `running`, `priority` FROM `process` INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` GROUP BY `priority`");
 467                 if (dbm::is_result($r))
 468                         foreach ($r AS $process)
 469                                 $running[$process["priority"]] = $process["running"];
 470
 471                 $processlist = "";
 472                 $r = q("SELECT COUNT(*) AS `entries`, `priority` FROM `workerqueue` GROUP BY `priority`");
 473                 if (dbm::is_result($r))
 474                         foreach ($r as $entry) {
 475                                 if ($processlist != "")
 476                                         $processlist .= ", ";
 477                                 $processlist .= $entry["priority"].":".$running[$entry["priority"]]."/".$entry["entries"];
 478                         }
 479
 480                 logger("Load: ".$load."/".$maxsysload." - processes: ".$active."/".$entries." (".$processlist.") - maximum: ".$queues."/".$maxqueues, LOGGER_DEBUG);
 481
 482                 // Are there fewer workers running as possible? Then fork a new one.
 483                 if (!Config::get("system", "worker_dont_fork") AND ($queues > ($active + 1)) AND ($entries > 1)) {
 484                         logger("Active workers: ".$active."/".$queues." Fork a new worker.", LOGGER_DEBUG);
 485                         $args = array("include/poller.php", "no_cron");
 486                         $a = get_app();
 487                         $a->proc_run($args);
 488                 }
 489         }
 490
 491         return($active >= $queues);
 492 }
 493
 494 /**
 495  * @brief Returns the number of active poller processes
 496  *
 497  * @return integer Number of active poller processes
 498  */
 499 function poller_active_workers() {
 500         $workers = q("SELECT COUNT(*) AS `processes` FROM `process` WHERE `command` = 'poller.php'");
 501
 502         return($workers[0]["processes"]);
 503 }
 504
 505 /**
 506  * @brief Check if we should pass some slow processes
 507  *
 508  * When the active processes of the highest priority are using more than 2/3
 509  * of all processes, we let pass slower processes.
 510  *
 511  * @param string $highest_priority Returns the currently highest priority
 512  * @return bool We let pass a slower process than $highest_priority
 513  */
 514 function poller_passing_slow(&$highest_priority) {
 515
 516         $highest_priority = 0;
 517
 518         $r = q("SELECT `priority`
 519                 FROM `process`
 520                 INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid`");
 521
 522         // No active processes at all? Fine
 523         if (!dbm::is_result($r))
 524                 return(false);
 525
 526         $priorities = array();
 527         foreach ($r AS $line)
 528                 $priorities[] = $line["priority"];
 529
 530         // Should not happen
 531         if (count($priorities) == 0)
 532                 return(false);
 533
 534         $highest_priority = min($priorities);
 535
 536         // The highest process is already the slowest one?
 537         // Then we quit
 538         if ($highest_priority == PRIORITY_NEGLIGIBLE)
 539                 return(false);
 540
 541         $high = 0;
 542         foreach ($priorities AS $priority)
 543                 if ($priority == $highest_priority)
 544                         ++$high;
 545
 546         logger("Highest priority: ".$highest_priority." Total processes: ".count($priorities)." Count high priority processes: ".$high, LOGGER_DEBUG);
 547         $passing_slow = (($high/count($priorities)) > (2/3));
 548
 549         if ($passing_slow)
 550                 logger("Passing slower processes than priority ".$highest_priority, LOGGER_DEBUG);
 551
 552         return($passing_slow);
 553 }
 554
 555 /**
 556  * @brief Returns the next worker process
 557  *
 558  * @return string SQL statement
 559  */
 560 function poller_worker_process() {
 561
 562         q("START TRANSACTION;");
 563
 564         // Check if we should pass some low priority process
 565         $highest_priority = 0;
 566
 567         if (poller_passing_slow($highest_priority)) {
 568                 // Are there waiting processes with a higher priority than the currently highest?
 569                 $r = q("SELECT * FROM `workerqueue`
 570                                 WHERE `executed` <= '%s' AND `priority` < %d
 571                                 ORDER BY `priority`, `created` LIMIT 1",
 572                                 dbesc(NULL_DATE),
 573                                 intval($highest_priority));
 574                 if (dbm::is_result($r)) {
 575                         return $r;
 576                 }
 577                 // Give slower processes some processing time
 578                 $r = q("SELECT * FROM `workerqueue`
 579                                 WHERE `executed` <= '%s' AND `priority` > %d
 580                                 ORDER BY `priority`, `created` LIMIT 1",
 581                                 dbesc(NULL_DATE),
 582                                 intval($highest_priority));
 583         }
 584
 585         // If there is no result (or we shouldn't pass lower processes) we check without priority limit
 586         if (($highest_priority == 0) OR !dbm::is_result($r)) {
 587                 $r = q("SELECT * FROM `workerqueue` WHERE `executed` <= '%s' ORDER BY `priority`, `created` LIMIT 1", dbesc(NULL_DATE));
 588         }
 589         return $r;
 590 }
 591
 592 /**
 593  * @brief Call the front end worker
 594  */
 595 function call_worker() {
 596         if (!Config::get("system", "frontend_worker")) {
 597                 return;
 598         }
 599
 600         $url = App::get_baseurl()."/worker";
 601         fetch_url($url, false, $redirects, 1);
 602 }
 603
 604 /**
 605  * @brief Call the front end worker if there aren't any active
 606  */
 607 function call_worker_if_idle() {
 608         if (!Config::get("system", "frontend_worker")) {
 609                 return;
 610         }
 611
 612         // Do we have "proc_open"? Then we can fork the poller
 613         if (function_exists("proc_open")) {
 614                 // When was the last time that we called the worker?
 615                 // Less than one minute? Then we quit
 616                 if ((time() - Config::get("system", "worker_started")) < 60) {
 617                         return;
 618                 }
 619
 620                 set_config("system", "worker_started", time());
 621
 622                 // Do we have enough running workers? Then we quit here.
 623                 if (poller_too_much_workers()) {
 624                         // Cleaning dead processes
 625                         poller_kill_stale_workers();
 626                         get_app()->remove_inactive_processes();
 627
 628                         return;
 629                 }
 630
 631                 poller_run_cron();
 632
 633                 logger('Call poller', LOGGER_DEBUG);
 634
 635                 $args = array("include/poller.php", "no_cron");
 636                 $a = get_app();
 637                 $a->proc_run($args);
 638                 return;
 639         }
 640
 641         // We cannot execute background processes.
 642         // We now run the processes from the frontend.
 643         // This won't work with long running processes.
 644         poller_run_cron();
 645
 646         clear_worker_processes();
 647
 648         $workers = q("SELECT COUNT(*) AS `processes` FROM `process` WHERE `command` = 'worker.php'");
 649
 650         if ($workers[0]["processes"] == 0) {
 651                 call_worker();
 652         }
 653 }
 654
 655 /**
 656  * @brief Removes long running worker processes
 657  */
 658 function clear_worker_processes() {
 659         $timeout = Config::get("system", "frontend_worker_timeout", 10);
 660
 661         /// @todo We should clean up the corresponding workerqueue entries as well
 662         q("DELETE FROM `process` WHERE `created` < '%s' AND `command` = 'worker.php'",
 663                 dbesc(datetime_convert('UTC','UTC',"now - ".$timeout." minutes")));
 664 }
 665
 666 /**
 667  * @brief Runs the cron processes
 668  */
 669 function poller_run_cron() {
 670         logger('Add cron entries', LOGGER_DEBUG);
 671
 672         // Check for spooled items
 673         proc_run(PRIORITY_HIGH, "include/spool_post.php");
 674
 675         // Run the cron job that calls all other jobs
 676         proc_run(PRIORITY_MEDIUM, "include/cron.php");
 677
 678         // Run the cronhooks job separately from cron for being able to use a different timing
 679         proc_run(PRIORITY_MEDIUM, "include/cronhooks.php");
 680
 681         // Cleaning dead processes
 682         poller_kill_stale_workers();
 683 }
 684
 685 if (array_search(__file__,get_included_files())===0){
 686         poller_run($_SERVER["argv"],$_SERVER["argc"]);
 687
 688         get_app()->end_process();
 689
 690         killme();
 691 }
 692 ?>