Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/process/Pipes/PipesInterface.php

@@ -0,0 +1,60 @@
+<?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\Process\Pipes;
+
+/**
+ * PipesInterface manages descriptors and pipes for the use of proc_open.
+ *
+ * @author Romain Neutron <imprec@gmail.com>
+ *
+ * @internal
+ */
+interface PipesInterface
+{
+    const CHUNK_SIZE = 16384;
+
+    /**
+     * Returns an array of descriptors for the use of proc_open.
+     *
+     * @return array
+     */
+    public function getDescriptors();
+
+    /**
+     * Returns an array of filenames indexed by their related stream in case these pipes use temporary files.
+     *
+     * @return string[]
+     */
+    public function getFiles();
+
+    /**
+     * Reads data in file handles and pipes.
+     *
+     * @param bool $blocking Whether to use blocking calls or not.
+     * @param bool $close    Whether to close pipes if they've reached EOF.
+     *
+     * @return string[] An array of read data indexed by their fd.
+     */
+    public function readAndWrite($blocking, $close = false);
+
+    /**
+     * Returns if the current state has open file handles or pipes.
+     *
+     * @return bool
+     */
+    public function areOpen();
+
+    /**
+     * Closes file handles and pipes.
+     */
+    public function close();
+}