getSubscribedSignals example

    protected function doRunCommand(Command $command, InputInterface $input, OutputInterface $output)
    {
        foreach ($command->getHelperSet() as $helper) {
            if ($helper instanceof InputAwareInterface) {
                $helper->setInput($input);
            }
        }

        $commandSignals = $command instanceof SignalableCommandInterface ? $command->getSubscribedSignals() : [];
        if ($commandSignals || $this->dispatcher && $this->signalsToDispatchEvent) {
            if (!$this->signalRegistry) {
                throw new RuntimeException('Unable to subscribe to signal events. Make sure that the "pcntl" extension is installed and that "pcntl_*" functions are not disabled by your php.ini\'s "disable_functions" directive.');
            }

            if (Terminal::hasSttyAvailable()) {
                $sttyMode = shell_exec('stty -g');

                foreach ([\SIGINT, \SIGTERM] as $signal) {
                    $this->signalRegistry->register($signal, static fn () => shell_exec('stty '.$sttyMode));
                }
            }

    protected function doRunCommand(Command $command, InputInterface $input, OutputInterface $output)
    {
        foreach ($command->getHelperSet() as $helper) {
            if ($helper instanceof InputAwareInterface) {
                $helper->setInput($input);
            }
        }

        $commandSignals = $command instanceof SignalableCommandInterface ? $command->getSubscribedSignals() : [];
        if ($commandSignals || $this->dispatcher && $this->signalsToDispatchEvent) {
            if (!$this->signalRegistry) {
                throw new RuntimeException('Unable to subscribe to signal events. Make sure that the "pcntl" extension is installed and that "pcntl_*" functions are not disabled by your php.ini\'s "disable_functions" directive.');
            }

            if (Terminal::hasSttyAvailable()) {
                $sttyMode = shell_exec('stty -g');

                foreach ([\SIGINT, \SIGTERM] as $signal) {
                    $this->signalRegistry->register($signal, static fn () => shell_exec('stty '.$sttyMode));
                }
            }