Add support for pecl-ev

src/ExtEvLoop.php

@@ -0,0 +1,210 @@
+<?php
+
+namespace React\EventLoop;
+
+use Ev;
+use EvIo;
+use EvTimer;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Tick\NextTickQueue;
+use React\EventLoop\Timer\Timer;
+use React\EventLoop\Timer\TimerInterface;
+use SplObjectStorage;
+
+/**
+ * @see https://bitbucket.org/osmanov/pecl-ev
+ * @see http://docs.php.net/ev
+ */
+class ExtEvLoop implements LoopInterface
+{
+    private $nextTickQueue;
+    private $futureTickQueue;
+    private $timerEvents;
+    private $readEvents = [];
+    private $writeEvents = [];
+    private $running;
+
+    public function __construct()
+    {
+        $this->nextTickQueue = new NextTickQueue($this);
+        $this->futureTickQueue = new FutureTickQueue($this);
+        $this->timerEvents = new SplObjectStorage();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addReadStream($stream, callable $listener)
+    {
+        $callback = function () use ($stream, $listener) {
+            call_user_func($listener, $stream, $this);
+        };
+
+        $event = new EvIo($stream, Ev::READ, $callback);
+        $this->readEvents[(int) $stream] = $event;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addWriteStream($stream, callable $listener)
+    {
+        $callback = function () use ($stream, $listener) {
+            call_user_func($listener, $stream, $this);
+        };
+
+        $event = new EvIo($stream, Ev::WRITE, $callback);
+        $this->writeEvents[(int) $stream] = $event;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeReadStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->readEvents[$key])) {
+            $this->readEvents[$key]->stop();
+            unset($this->readEvents[$key]);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeWriteStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->writeEvents[$key])) {
+            $this->writeEvents[$key]->stop();
+            unset($this->writeEvents[$key]);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeStream($stream)
+    {
+        $this->removeReadStream($stream);
+        $this->removeWriteStream($stream);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addTimer($interval, callable $callback)
+    {
+        $timer = new Timer($this, $interval, $callback, false);
+
+        $callback = function () use ($timer) {
+            call_user_func($timer->getCallback(), $timer);
+
+            if ($this->isTimerActive($timer)) {
+                $this->cancelTimer($timer);
+            }
+        };
+
+        $event = new EvTimer($timer->getInterval(), 0, $callback);
+        $this->timerEvents->attach($timer, $event);
+
+        return $timer;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addPeriodicTimer($interval, callable $callback)
+    {
+        $timer = new Timer($this, $interval, $callback, true);
+
+        $callback = function () use ($timer) {
+            call_user_func($timer->getCallback(), $timer);
+        };
+
+        $event = new EvTimer($interval, $interval, $callback);
+        $this->timerEvents->attach($timer, $event);
+
+        return $timer;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function cancelTimer(TimerInterface $timer)
+    {
+        if (isset($this->timerEvents[$timer])) {
+            $this->timerEvents[$timer]->stop();
+            $this->timerEvents->detach($timer);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function isTimerActive(TimerInterface $timer)
+    {
+        return $this->timerEvents->contains($timer);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function nextTick(callable $listener)
+    {
+        $this->nextTickQueue->add($listener);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function futureTick(callable $listener)
+    {
+        $this->futureTickQueue->add($listener);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function tick()
+    {
+        $this->nextTickQueue->tick();
+
+        $this->futureTickQueue->tick();
+
+        Ev::run(Ev::RUN_ONCE | Ev::RUN_NOWAIT);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->nextTickQueue->tick();
+
+            $this->futureTickQueue->tick();
+
+            $flags = Ev::RUN_ONCE;
+            if (!$this->running || !$this->nextTickQueue->isEmpty() || !$this->futureTickQueue->isEmpty()) {
+                $flags |= Ev::RUN_NOWAIT;
+            } elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count()) {
+                break;
+            }
+
+            Ev::run($flags);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function stop()
+    {
+        $this->running = false;
+    }
+}

src/Factory.php

@@ -7,7 +7,9 @@ class Factory
     public static function create()
     {
         // @codeCoverageIgnoreStart
-        if (function_exists('event_base_new')) {
+        if (class_exists('Ev', false)) {
+          return new ExtEvLoop;
+        } elseif (function_exists('event_base_new')) {
             return new LibEventLoop();
         } elseif (class_exists('libev\EventLoop', false)) {
             return new LibEvLoop;