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4df3dd7679
smart_str uses an over-allocated string to optimize for append operations. Functions that use smart_str tend to return the over-allocated string directly. This results in unnecessary memory usage, especially for small strings. The overhead can be up to 231 bytes for strings smaller than that, and 4095 for other strings. This can be avoided for strings smaller than `4096 - zend_string header size - 1` by reallocating the string. This change introduces `smart_str_trim_to_size()`, and calls it in `smart_str_extract()`. Functions that use `smart_str` are updated to use `smart_str_extract()`. Fixes GH-8896
27 lines
1.1 KiB
C
27 lines
1.1 KiB
C
/*
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+----------------------------------------------------------------------+
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| Copyright (c) The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP 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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| https://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP 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@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Author: Sascha Schumann <sascha@schumann.cx> |
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+----------------------------------------------------------------------+
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*/
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#ifndef ZEND_SMART_STR_PUBLIC_H
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#define ZEND_SMART_STR_PUBLIC_H
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typedef struct {
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/** See smart_str_extract() */
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zend_string *s;
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size_t a;
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} smart_str;
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#endif
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