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<?php
if ( !defined( 'MEDIAWIKI' ) ) {
die();
}
/**
* Very crude tools to track memory usage
*
* @file
* @author Niklas Laxström
* @copyright Copyright © 2008, Niklas Laxström
* @license GPL-2.0-or-later
*/
/// Memory usage at checkpoints
$wgMemUse = [];
/// Tracks the deepness of the stack
$wgMemStack = 0;
/**
* Call to start memory counting for a block.
* @param string $a Block name.
*/
function wfMemIn( $a ) {
global $wgLang, $wgMemUse, $wgMemStack;
$mem = memory_get_usage();
$memR = memory_get_usage();
$wgMemUse[$a][] = [ $mem, $memR ];
$memF = $wgLang->formatNum( $mem );
$memRF = $wgLang->formatNum( $memR );
$pad = str_repeat( '.', $wgMemStack );
wfDebug( "$pad$a-IN: \t$memF\t\t$memRF\n" );
$wgMemStack++;
}
/**
* Call to start stop counting for a block. Difference from start is shown.
* @param string $a Block name.
*/
function wfMemOut( $a ) {
global $wgLang, $wgMemUse, $wgMemStack;
$mem = memory_get_usage();
$memR = memory_get_usage();
list( $memO, $memOR ) = array_pop( $wgMemUse[$a] );
$memF = $wgLang->formatNum( $mem );
$memRF = $wgLang->formatNum( $memR );
$memD = $mem - $memO;
$memRD = $memR - $memOR;
$memDF = $wgLang->formatNum( $memD );
$memRDF = $wgLang->formatNum( $memRD );
$pad = str_repeat( '.', $wgMemStack - 1 );
wfDebug( "$pad$a-OUT:\t$memF ($memDF)\t$memRF ($memRDF)\n" );
$wgMemStack--;
}
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