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4b79dba932
This is a new transparent technology that eliminates overhead of PHP class inheritance. PHP classes are compiled and cached (by opcahce) separately, however their "linking" was done at run-time - on each request. The process of "linking" may involve a number of compatibility checks and borrowing methods/properties/constants form parent and traits. This takes significant time, but the result is the same on each request. Inheritance Cache performs "linking" for unique set of all the depending classes (parent, interfaces, traits, property types, method types involved into compatibility checks) once and stores result in opcache shared memory. As a part of the this patch, I removed limitations for immutable classes (unresolved constants, typed properties and covariant type checks). So now all classes stored in opcache are "immutable". They may be lazily loaded into process memory, if necessary, but this usually occurs just once (on first linking). The patch shows 8% improvement on Symphony "Hello World" app.
45 lines
2.3 KiB
C
45 lines
2.3 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@php.net> |
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| Zeev Suraski <zeev@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifndef ZEND_INHERITANCE_H
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#define ZEND_INHERITANCE_H
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#include "zend.h"
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BEGIN_EXTERN_C()
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ZEND_API void zend_do_implement_interface(zend_class_entry *ce, zend_class_entry *iface);
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ZEND_API void zend_do_inheritance_ex(zend_class_entry *ce, zend_class_entry *parent_ce, bool checked);
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#define zend_do_inheritance(ce, parent_ce) \
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zend_do_inheritance_ex(ce, parent_ce, 0)
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ZEND_API zend_class_entry *zend_do_link_class(zend_class_entry *ce, zend_string *lc_parent_name, zend_string *key);
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void zend_verify_abstract_class(zend_class_entry *ce);
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void zend_build_properties_info_table(zend_class_entry *ce);
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zend_class_entry *zend_try_early_bind(zend_class_entry *ce, zend_class_entry *parent_ce, zend_string *lcname, zval *delayed_early_binding);
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ZEND_API extern zend_class_entry* (*zend_inheritance_cache_get)(zend_class_entry *ce, zend_class_entry *parent, zend_class_entry **traits_and_interfaces);
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ZEND_API extern zend_class_entry* (*zend_inheritance_cache_add)(zend_class_entry *ce, zend_class_entry *proto, zend_class_entry *parent, zend_class_entry **traits_and_interfaces, HashTable *dependencies);
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END_EXTERN_C()
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#endif
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