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Current File : //var/www/html/trader/vendor/workerman/workerman/Events/Event.php
<?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<[email protected]>
 * @copyright 有个鬼<[email protected]>
 * @link      http://www.workerman.net/
 * @license   http://www.opensource.org/licenses/mit-license.php MIT License
 */
namespace Workerman\Events;

use Workerman\Worker;

/**
 * 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()
    {
        if (\class_exists('\\\\EventBase', false)) {
            $class_name = '\\\\EventBase';
        } else {
            $class_name = '\EventBase';
        }
        $this->_eventBase = new $class_name();
    }
   
    /**
     * @see EventInterface::add()
     */
    public function add($fd, $flag, $func, $args=array())
    {
        if (\class_exists('\\\\Event', false)) {
            $class_name = '\\\\Event';
        } else {
            $class_name = '\Event';
        }
        switch ($flag) {
            case self::EV_SIGNAL:

                $fd_key = (int)$fd;
                $event = $class_name::signal($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 $class_name($this->_eventBase, -1, $class_name::TIMEOUT|$class_name::PERSIST, array($this, "timerCallback"), $param);
                if (!$event||!$event->addTimer($fd)) {
                    return false;
                }
                $this->_eventTimer[self::$_timerId] = $event;
                return self::$_timerId++;
                
            default :
                $fd_key = (int)$fd;
                $real_flag = $flag === self::EV_READ ? $class_name::READ | $class_name::PERSIST : $class_name::WRITE | $class_name::PERSIST;
                $event = new $class_name($this->_eventBase, $fd, $real_flag, $func, $fd);
                if (!$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])) {
                    $this->_eventSignal[$fd_key]->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 int|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) {
            Worker::stopAll(250, $e);
        } catch (\Error $e) {
            Worker::stopAll(250, $e);
        }
    }
    
    /**
     * @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();
    }

    /**
     * Destroy loop.
     *
     * @return void
     */
    public function destroy()
    {
        $this->_eventBase->exit();
    }

    /**
     * Get timer count.
     *
     * @return integer
     */
    public function getTimerCount()
    {
        return \count($this->_eventTimer);
    }
}
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