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phorge-phorge/scripts/fpm/warmup.php

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<?php
/**
* NOTE: This is an ADVANCED feature that improves performance but adds a lot
* of complexity! This is only suitable for production servers because workers
* won't pick up changes between when they spawn and when they handle a request.
*
* Phabricator spends a significant portion of its runtime loading classes
* and functions, even with APC enabled. Since we have very rigidly-defined
* rules about what can go in a module (specifically: no side effects), it
* is safe to load all the libraries *before* we receive a request.
*
* Normally, SAPIs don't provide a way to do this, but with a patched PHP-FPM
* SAPI you can provide a warmup file that it will execute before a request
* is received.
*
* We're limited in what we can do here, since request information won't
* exist yet, but we can load class and function definitions, which is what
* we're really interested in.
*
* Once this file exists, the FCGI process will drop into its normal accept loop
* and eventually process a request.
*/
function __warmup__() {
$root = dirname(dirname(dirname(dirname(__FILE__))));
require_once $root.'/libphutil/src/__phutil_library_init__.php';
require_once $root.'/arcanist/src/__phutil_library_init__.php';
require_once $root.'/phabricator/src/__phutil_library_init__.php';
// Load every symbol. We could possibly refine this -- we don't need to load
// every Controller, for instance.
$loader = new PhutilSymbolLoader();
$loader->selectAndLoadSymbols();
define('__WARMUP__', true);
}
__warmup__();