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55 lines
2.1 KiB
PHP
55 lines
2.1 KiB
PHP
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<?php
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/*
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* Copyright 2012 Facebook, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* NOTE: This is an ADVANCED feature that improves performance but adds a lot
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* of complexity! This is only suitable for production servers because workers
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* won't pick up changes between when they spawn and when they handle a request.
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*
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* Phabricator spends a significant portion of its runtime loading classes
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* and functions, even with APC enabled. Since we have very rigidly-defined
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* rules about what can go in a module (specifically: no side effects), it
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* is safe to load all the libraries *before* we receive a request.
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*
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* Normally, SAPIs don't provide a way to do this, but with a patched PHP-FPM
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* SAPI you can provide a warmup file that it will execute before a request
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* is received.
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*
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* We're limited in what we can do here, since request information won't
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* exist yet, but we can load class and function definitions, which is what
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* we're really interested in.
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*
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* Once this file exists, the FCGI process will drop into its normal accept loop
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* and eventually process a request.
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*/
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function __warmup__() {
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$root = dirname(dirname(dirname(dirname(__FILE__))));
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require_once $root.'/libphutil/src/__phutil_library_init__.php';
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require_once $root.'/arcanist/src/__phutil_library_init__.php';
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require_once $root.'/phabricator/src/__phutil_library_init__.php';
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// Load every symbol. We could possibly refine this -- we don't need to load
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// every Controller, for instance.
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$loader = new PhutilSymbolLoader();
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$loader->selectAndLoadSymbols();
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define('__WARMUP__', true);
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}
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__warmup__();
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