pcntl_async_signals

<?php         if (function_exists('pcntl_async_signals') && function_exists('pcntl_signal')) {

            @mkdir($directory, 0777, true);

            if ($realDir = realpath($directory)) {

                pcntl_async_signals(true);

                pcntl_signal(SIGINT, function () use ($realDir) {

                    $fs = new Filesystem();

                    $fs->removeDirectory($realDir);

<?php     protected function execute(InputInterface $input, OutputInterface $output)

    {

        if (function_exists('pcntl_async_signals') && function_exists('pcntl_signal')) {

            pcntl_async_signals(true);

            pcntl_signal(SIGINT, array($this, 'revertComposerFile'));

            pcntl_signal(SIGTERM, array($this, 'revertComposerFile'));

            pcntl_signal(SIGHUP, array($this, 'revertComposerFile'));

<?php         if (!$shutdownRegistered) {

            if (function_exists('pcntl_async_signals') && function_exists('pcntl_signal')) {

                pcntl_async_signals(true);

                pcntl_signal(SIGINT, function ($sig) {

                    exit(130);

                });

<?php         $prevHandler = null;

        $windowsHandler = null;

        if ($handleInterruptsUnix) {

            pcntl_async_signals(true);

            $prevHandler = pcntl_signal_get_handler(SIGINT);

            pcntl_signal(SIGINT, function ($sig) use ($runCleanup, $prevHandler, $io) {

                $io->writeError('Received SIGINT, aborting', true, IOInterface::DEBUG);