Why I randomly encounter this fatal error with apc (in Yii Framework)?

Yii 1.1 General Discussion
1

I sometimes run into


Fatal error: require() [<a href='function.require'>function.require</a>]: apc_fcntl_lock failed errno:6 in C:\web\yii\framework\web\CWebApplication.php on line 345

code context:




        else

            $controllerID.='/';

        $className=ucfirst($id).'Controller';

        $classFile=$basePath.DIRECTORY_SEPARATOR.$className.'.php';

        if(is_file($classFile))

        {

            if(!class_exists($className,false))

                require($classFile);  ////////////THIS IS LINE 345

            if(class_exists($className,false) && is_subclass_of($className,'CController'))

            {

                $id[0]=strtolower($id[0]);

                return array(

                    new $className($controllerID.$id,$owner===$this?null:$owner),

                    $this->parseActionParams($route),

                );

            }

            return null;

        }

Relative runtime environment:

OS:win2k3.

PHP Version 5.3.6

Server API CGI/FastCGI

apc:

Version 3.1.8-dev

APC Debugging Disabled

MMAP Support Disabled

Locking type File Locks

Serialization Support php

Revision $Revision: 308812 $

Build Date Mar 1 2011 13:31:44

What caused this error? How do I fix it?

2

Maybe same problem like this?

http://stackoverflow.com/questions/8358341/when-useing-php-cli-apc-crashes-apache-apc-fcntl-lock-failed-errno6

3

Can you paste your apc config?