symfony/src/Symfony/Bundle/FrameworkBundle/Resources/config/services.xml

<?xml version="1.0" ?>

<container xmlns="http://www.symfony-project.org/schema/dic/services"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.symfony-project.org/schema/dic/services http://www.symfony-project.org/schema/dic/services/services-1.0.xsd">

    <parameters>
        <parameter key="event_dispatcher.class">Symfony\Bundle\FrameworkBundle\EventDispatcher</parameter>
        <parameter key="http_kernel.class">Symfony\Bundle\FrameworkBundle\HttpKernel</parameter>
        <parameter key="error_handler.class">Symfony\Component\HttpKernel\Debug\ErrorHandler</parameter>
        <parameter key="error_handler.level">null</parameter>
        <parameter key="filesystem.class">Symfony\Bundle\FrameworkBundle\Util\Filesystem</parameter>
        <parameter key="cache_warmer.class">Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerAggregate</parameter>
        <parameter key="cache_warmer.autoloader_map.class">Symfony\Bundle\FrameworkBundle\CacheWarmer\ClassMapCacheWarmer</parameter>
        <parameter key="file_locator.class">Symfony\Component\HttpKernel\Config\FileLocator</parameter>
    </parameters>

    <services>
        <service id="event_dispatcher" class="%event_dispatcher.class%">
            <argument type="service" id="service_container" />
        </service>

        <service id="error_handler" class="%error_handler.class%" public="false">
            <argument>%error_handler.level%</argument>
        </service>

        <service id="http_kernel" class="%http_kernel.class%">
            <argument type="service" id="service_container" />
            <argument type="service" id="controller_resolver" />
            <call method="setEventDispatcher"><argument type="service" id="event_dispatcher" /></call>
        </service>

        <service id="cache_warmer" class="%cache_warmer.class%">
            <argument type="collection" />
        </service>

        <service id="cache_warmer.autoload_map" class="%cache_warmer.autoloader_map.class%" public="false">
            <tag name="kernel.cache_warmer" />
            <argument type="service" id="service_container" />
        </service>

        <!--
            If you want to change the Request class, modify the code in
            your front controller (app.php) so that it passes an instance of
            YourRequestClass to the Kernel.
            This service definition only defines the scope of the request.
            It is used to check references scope.
        -->
        <service id="request" scope="request" synthetic="true" />

        <service id="filesystem" class="%filesystem.class%"></service>

        <service id="file_locator" class="%file_locator.class%">
            <argument type="service" id="kernel" />
        </service>
    </services>
</container>