[FEATURE] Add SQL Logging to AdminPanel
[Packages/TYPO3.CMS.git] / typo3 / sysext / adminpanel / Classes / Utility / MemoryUtility.php
1 <?php
2 declare(strict_types = 1);
3
4 namespace TYPO3\CMS\Adminpanel\Utility;
5
6 /*
7 * This file is part of the TYPO3 CMS project.
8 *
9 * It is free software; you can redistribute it and/or modify it under
10 * the terms of the GNU General Public License, either version 2
11 * of the License, or any later version.
12 *
13 * For the full copyright and license information, please read the
14 * LICENSE.txt file that was distributed with this source code.
15 *
16 * The TYPO3 project - inspiring people to share!
17 */
18
19 use TYPO3\CMS\Core\Utility\GeneralUtility;
20
21 /**
22 * Helper class to keep track of memory consumption in loggers to reduce risk of running out of memory
23 *
24 * @internal
25 */
26 class MemoryUtility
27 {
28 private const MINIMAL_PERCENT_OF_FREE_MEMORY = 0.30;
29
30 /**
31 * Checks memory usage used in current process - this is no guarantee for not running out of memory
32 * but should prevent memory exhaustion due to the admin panel in most cases.
33 * The loggers will stop logging once the amount of free memory falls below the threshold (see
34 * MINIMAL_PERCENT_OF_FREE_MEMORY const).
35 *
36 * @return bool
37 */
38 public static function isMemoryConsumptionTooHigh(): bool
39 {
40 $iniLimit = ini_get('memory_limit');
41 $memoryLimit = $iniLimit === '-1' ? -1 : GeneralUtility::getBytesFromSizeMeasurement($iniLimit);
42 $freeMemory = $memoryLimit - memory_get_usage(true);
43
44 return $memoryLimit > 0 && $freeMemory < (self::MINIMAL_PERCENT_OF_FREE_MEMORY * $memoryLimit);
45 }
46 }