mod/worker.php

   1 <?php
   2 /**
   3  * @file mod/worker.php
   4  * @brief Module for running the poller as frontend process
   5  */
   6 require_once("include/poller.php");
   7
   8 use Friendica\Core\Config;
   9 use Friendica\Core\PConfig;
  10
  11 function worker_init($a){
  12
  13         if (!Config::get("system", "frontend_worker")) {
  14                 return;
  15         }
  16
  17         // We don't need the following lines if we can execute background jobs.
  18         // So we just wake up the worker if it sleeps.
  19         if (function_exists("proc_open")) {
  20                 call_worker_if_idle();
  21                 return;
  22         }
  23
  24         clear_worker_processes();
  25
  26         $workers = q("SELECT COUNT(*) AS `processes` FROM `process` WHERE `command` = 'worker.php'");
  27
  28         if ($workers[0]["processes"] > Config::get("system", "worker_queues", 4)) {
  29                 return;
  30         }
  31
  32         $a->start_process();
  33
  34         logger("Front end worker started: ".getmypid());
  35
  36         call_worker();
  37
  38         if ($r = poller_worker_process()) {
  39
  40                 // On most configurations this parameter wouldn't have any effect.
  41                 // But since it doesn't destroy anything, we just try to get more execution time in any way.
  42                 set_time_limit(0);
  43
  44                 if (poller_claim_process($r[0])) {
  45                         poller_execute($r[0]);
  46                 }
  47         }
  48
  49         call_worker();
  50
  51         poller_unclaim_process();
  52
  53         $a->end_process();
  54
  55         logger("Front end worker ended: ".getmypid());
  56
  57         killme();
  58 }