add event support

Events/Event.php

@@ -0,0 +1,193 @@
+<?php 
+/**
+ * This file is part of workerman.
+ *
+ * Licensed under The MIT License
+ * For full copyright and license information, please see the MIT-LICENSE.txt
+ * Redistributions of files must retain the above copyright notice.
+ *
+ * @author    有个鬼<42765633@qq.com>
+ * @copyright 有个鬼<42765633@qq.com>
+ * @link      http://www.workerman.net/
+ * @license   http://www.opensource.org/licenses/mit-license.php MIT License
+ */
+namespace Workerman\Events;
+
+/**
+ * libevent eventloop
+ */
+class Event implements EventInterface
+{
+    /**
+     * Event base.
+     * @var object
+     */
+    protected $_eventBase = null;
+    
+    /**
+     * All listeners for read/write event.
+     * @var array
+     */
+    protected $_allEvents = array();
+    
+    /**
+     * Event listeners of signal.
+     * @var array
+     */
+    protected $_eventSignal = array();
+    
+    /**
+     * All timer event listeners.
+     * [func, args, event, flag, time_interval]
+     * @var array
+     */
+    protected $_eventTimer = array();
+
+    /**
+     * Timer id.
+     * @var int
+     */
+    protected static $_timerId = 1;
+    
+    /**
+     * construct
+     * @return void
+     */
+    public function __construct()
+    {
+        $this->_eventBase = new \EventBase();
+    }
+   
+    /**
+     * @see EventInterface::add()
+     */
+    public function add($fd, $flag, $func, $args=array())
+    {
+        switch ($flag) {
+            case self::EV_SIGNAL:
+
+                $fd_key = (int)$fd;
+                $event = \Event::signal($this->_eventBase, $fd, $func);
+                if (!$event||!$event->add()) {
+                    return false;
+                }
+                $this->_eventSignal[$fd_key] = $event;
+                return true;
+
+            case self::EV_TIMER:
+            case self::EV_TIMER_ONCE:
+
+                $param = array($func, (array)$args, $flag, $fd, self::$_timerId);
+                $event = new \Event($this->_eventBase, -1, \Event::TIMEOUT|\Event::PERSIST, array($this, "timerCallback"), $param);
+                if (!$event||!$event->addTimer($fd)) {
+                    return false;
+                }
+                $this->_eventTimer[self::$_timerId] = $event;
+                return self::$_timerId++;
+                
+            default :
+
+                $callback = function ($fd) use ($func) {
+                    try {
+                        call_user_func($func, $fd);
+                    } catch (\Exception $e) {
+                        echo $e;
+                        exit(250);
+                    }
+                };
+
+                $fd_key = (int)$fd;
+                $real_flag = $flag === self::EV_READ ? \Event::READ | \Event::PERSIST : \Event::WRITE | \Event::PERSIST;
+                $event = new \Event($this->_eventBase, $fd, $real_flag, $callback);
+                if (!$event||!$event->add()) {
+                    return false;
+                }
+                $this->_allEvents[$fd_key][$flag] = $event;
+                return true;
+        }
+    }
+    
+    /**
+     * @see Events\EventInterface::del()
+     */
+    public function del($fd, $flag)
+    {
+        switch ($flag) {
+
+            case self::EV_READ:
+            case self::EV_WRITE:
+
+                $fd_key = (int)$fd;
+                if (isset($this->_allEvents[$fd_key][$flag])) {
+                    $this->_allEvents[$fd_key][$flag]->del();
+                    unset($this->_allEvents[$fd_key][$flag]);
+                }
+                if (empty($this->_allEvents[$fd_key])) {
+                    unset($this->_allEvents[$fd_key]);
+                }
+                break;
+
+            case  self::EV_SIGNAL:
+
+                $fd_key = (int)$fd;
+                if (isset($this->_eventSignal[$fd_key])) {
+                    $this->_allEvents[$fd_key][$flag]->del();
+                    unset($this->_eventSignal[$fd_key]);
+                }
+                break;
+
+            case self::EV_TIMER:
+            case self::EV_TIMER_ONCE:
+                if (isset($this->_eventTimer[$fd])) {
+                    $this->_eventTimer[$fd]->del();
+                    unset($this->_eventTimer[$fd]);
+                }
+                break;
+        }
+        return true;
+    }
+    
+    /**
+     * Timer callback.
+     * @param null $fd
+     * @param int $what
+     * @param int $timer_id
+     */
+    public function timerCallback($fd, $what, $param)
+    {
+        $timer_id = $param[4];
+        
+        if ($param[2] === self::EV_TIMER_ONCE) {
+            $this->_eventTimer[$timer_id]->del();
+            unset($this->_eventTimer[$timer_id]);
+        }
+
+        try {
+            call_user_func_array($param[0], $param[1]);
+        } catch (\Exception $e) {
+            echo $e;
+            exit(250);
+        }
+    }
+    
+    /**
+     * @see Events\EventInterface::clearAllTimer() 
+     * @return void
+     */
+    public function clearAllTimer()
+    {
+        foreach ($this->_eventTimer as $event) {
+            $event->del();
+        }
+        $this->_eventTimer = array();
+    }
+     
+
+    /**
+     * @see EventInterface::loop()
+     */
+    public function loop()
+    {
+        $this->_eventBase->loop();
+    }
+}

Worker.php

@@ -378,6 +378,7 @@ class Worker
      */
     protected static $_availableEventLoops = array(
         'libevent',
+        'event',
         'ev'
     );