added new socket manager, errorhandling and testing is not finished yet

libs/React/EventLoop/Tick/NextTickQueue.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace React\EventLoop\Tick;
+
+use React\EventLoop\LoopInterface;
+use SplQueue;
+
+class NextTickQueue
+{
+    private $eventLoop;
+    private $queue;
+
+    /**
+     * @param LoopInterface $eventLoop The event loop passed as the first parameter to callbacks.
+     */
+    public function __construct(LoopInterface $eventLoop)
+    {
+        $this->eventLoop = $eventLoop;
+        $this->queue = new SplQueue();
+    }
+
+    /**
+     * Add a callback to be invoked on the next tick of the event loop.
+     *
+     * Callbacks are guaranteed to be executed in the order they are enqueued,
+     * before any timer or stream events.
+     *
+     * @param callable $listener The callback to invoke.
+     */
+    public function add(callable $listener)
+    {
+        $this->queue->enqueue($listener);
+    }
+
+    /**
+     * Flush the callback queue.
+     */
+    public function tick()
+    {
+        while (!$this->queue->isEmpty()) {
+            call_user_func(
+                $this->queue->dequeue(),
+                $this->eventLoop
+            );
+        }
+    }
+
+    /**
+     * Check if the next tick queue is empty.
+     *
+     * @return boolean
+     */
+    public function isEmpty()
+    {
+        return $this->queue->isEmpty();
+    }
+}