$last_check = $starttime = time();
self::$state = self::STATE_STARTUP;
+ $wait_interval = self::isDaemonMode() ? 360 : 10;
+ $start = time();
+
+ do {
+ // We fetch the next queue entry that is about to be executed
+ while ($r = self::workerProcess()) {
+ // Don't refetch when a worker fetches tasks for multiple workers
+ $refetched = DI::config()->get('system', 'worker_multiple_fetch');
+ foreach ($r as $entry) {
+ // Assure that the priority is an integer value
+ $entry['priority'] = (int)$entry['priority'];
+
+ // The work will be done
+ if (!self::execute($entry)) {
+ Logger::notice('Process execution failed, quitting.');
+ return;
+ }
- // We fetch the next queue entry that is about to be executed
- while ($r = self::workerProcess()) {
- // Don't refetch when a worker fetches tasks for multiple workers
- $refetched = DI::config()->get('system', 'worker_multiple_fetch');
- foreach ($r as $entry) {
- // Assure that the priority is an integer value
- $entry['priority'] = (int)$entry['priority'];
-
- // The work will be done
- if (!self::execute($entry)) {
- Logger::notice('Process execution failed, quitting.');
- return;
+ // Trying to fetch new processes - but only once when successful
+ if (!$refetched && DI::lock()->acquire(self::LOCK_PROCESS, 0)) {
+ self::findWorkerProcesses();
+ DI::lock()->release(self::LOCK_PROCESS);
+ self::$state = self::STATE_REFETCH;
+ $refetched = true;
+ } else {
+ self::$state = self::STATE_SHORT_LOOP;
+ }
}
- // Trying to fetch new processes - but only once when successful
- if (!$refetched && DI::lock()->acquire(self::LOCK_PROCESS, 0)) {
- self::findWorkerProcesses();
- DI::lock()->release(self::LOCK_PROCESS);
- self::$state = self::STATE_REFETCH;
- $refetched = true;
- } else {
- self::$state = self::STATE_SHORT_LOOP;
- }
- }
-
- // To avoid the quitting of multiple workers only one worker at a time will execute the check
- if ((time() > $last_check + 5) && !self::getWaitingJobForPID()) {
- self::$state = self::STATE_LONG_LOOP;
-
- if (DI::lock()->acquire(self::LOCK_WORKER, 0)) {
- // Count active workers and compare them with a maximum value that depends on the load
- if (self::tooMuchWorkers()) {
- Logger::notice('Active worker limit reached, quitting.');
+ // To avoid the quitting of multiple workers only one worker at a time will execute the check
+ if ((time() > $last_check + 5) && !self::getWaitingJobForPID()) {
+ self::$state = self::STATE_LONG_LOOP;
+
+ if (DI::lock()->acquire(self::LOCK_WORKER, 0)) {
+ // Count active workers and compare them with a maximum value that depends on the load
+ if (self::tooMuchWorkers()) {
+ Logger::notice('Active worker limit reached, quitting.');
+ DI::lock()->release(self::LOCK_WORKER);
+ return;
+ }
+
+ // Check free memory
+ if (DI::process()->isMinMemoryReached()) {
+ Logger::warning('Memory limit reached, quitting.');
+ DI::lock()->release(self::LOCK_WORKER);
+ return;
+ }
DI::lock()->release(self::LOCK_WORKER);
- return;
}
+ $last_check = time();
+ }
- // Check free memory
- if (DI::process()->isMinMemoryReached()) {
- Logger::warning('Memory limit reached, quitting.');
- DI::lock()->release(self::LOCK_WORKER);
- return;
+ // Quit the worker once every cron interval
+ if (time() > ($starttime + (DI::config()->get('system', 'cron_interval') * 60))) {
+ Logger::info('Process lifetime reached, respawning.');
+ self::unclaimProcess();
+ if (self::isDaemonMode()) {
+ self::IPCSetJobState(true);
+ } else {
+ self::spawnWorker();
}
- DI::lock()->release(self::LOCK_WORKER);
+ return;
}
- $last_check = time();
+ $start = time();
}
- // Quit the worker once every cron interval
- if (time() > ($starttime + (DI::config()->get('system', 'cron_interval') * 60))) {
- Logger::info('Process lifetime reached, respawning.');
- self::unclaimProcess();
- if (self::isDaemonMode()) {
- self::IPCSetJobState(true);
- } else {
- self::spawnWorker();
+ $seconds = (time() - $start);
+
+ // logarithmic wait time calculation.
+ $arg = (($seconds + 1) / ($wait_interval / 9)) + 1;
+ $sleep = min(1000000, round(log10($arg) * 1000000, 0));
+ usleep($sleep);
+
+ $timeout = ($seconds >= $wait_interval);
+ Logger::info('Timeout', ['timeout' => $timeout, 'seconds' => $seconds, 'sleep' => $sleep]);
+
+ if (!$timeout) {
+ if (DI::process()->isMaxLoadReached()) {
+ Logger::notice('maximum load reached, quitting.');
+ return;
}
- return;
+
+ // Kill stale processes every 5 minutes
+ $last_cleanup = DI::config()->get('system', 'worker_last_cleaned', 0);
+ if (time() > ($last_cleanup + 300)) {
+ DI::config()->set('system', 'worker_last_cleaned', time());
+ self::killStaleWorkers();
+ }
+
+ // Check if the system is ready
+ if (!self::isReady()) {
+ return;
+ }
}
- }
+ } while (!$timeout);
// Cleaning up. Possibly not needed, but it doesn't harm anything.
if (self::isDaemonMode()) {