--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\CacheWarmer;
+
+/**
+ * Abstract cache warmer that knows how to write a file to the cache.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+abstract class CacheWarmer implements CacheWarmerInterface
+{
+ protected function writeCacheFile($file, $content)
+ {
+ $tmpFile = @tempnam(dirname($file), basename($file));
+ if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $file)) {
+ @chmod($file, 0666 & ~umask());
+
+ return;
+ }
+
+ throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $file));
+ }
+}