lockfile again

vendor/league/flysystem/src/SafeStorage.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace League\Flysystem;
+
+final class SafeStorage
+{
+    /**
+     * @var string
+     */
+    private $hash;
+
+    /**
+     * @var array
+     */
+    protected static $safeStorage = [];
+
+    public function __construct()
+    {
+        $this->hash = spl_object_hash($this);
+        static::$safeStorage[$this->hash] = [];
+    }
+
+    public function storeSafely($key, $value)
+    {
+        static::$safeStorage[$this->hash][$key] = $value;
+    }
+
+    public function retrieveSafely($key)
+    {
+        if (array_key_exists($key, static::$safeStorage[$this->hash])) {
+            return static::$safeStorage[$this->hash][$key];
+        }
+    }
+
+    public function __destruct()
+    {
+        unset(static::$safeStorage[$this->hash]);
+    }
+}