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<?php
/**
* Profiler storing information in the DB.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Profiler
*/
/**
* $wgProfiler['class'] = 'ProfilerSimpleDB';
*
* @ingroup Profiler
*/
class ProfilerSimpleDB extends ProfilerStandard {
protected function collateOnly() {
return true;
}
public function isPersistent() {
return true;
}
/**
* Log the whole profiling data into the database.
*/
public function logData() {
global $wgProfilePerHost;
# Do not log anything if database is readonly (bug 5375)
if ( wfReadOnly() ) {
return;
}
if ( $wgProfilePerHost ) {
$pfhost = wfHostname();
} else {
$pfhost = '';
}
try {
$this->collateData();
$dbw = wfGetDB( DB_MASTER );
$useTrx = ( $dbw->getType() === 'sqlite' ); // much faster
if ( $useTrx ) {
$dbw->startAtomic( __METHOD__ );
}
foreach ( $this->mCollated as $name => $data ) {
$eventCount = $data['count'];
$timeSum = (float)( $data['real'] * 1000 );
$memorySum = (float)$data['memory'];
$name = substr( $name, 0, 255 );
// Kludge
$timeSum = $timeSum >= 0 ? $timeSum : 0;
$memorySum = $memorySum >= 0 ? $memorySum : 0;
$dbw->update( 'profiling',
array(
"pf_count=pf_count+{$eventCount}",
"pf_time=pf_time+{$timeSum}",
"pf_memory=pf_memory+{$memorySum}",
),
array(
'pf_name' => $name,
'pf_server' => $pfhost,
),
__METHOD__ );
$rc = $dbw->affectedRows();
if ( $rc == 0 ) {
$dbw->insert( 'profiling',
array(
'pf_name' => $name,
'pf_count' => $eventCount,
'pf_time' => $timeSum,
'pf_memory' => $memorySum,
'pf_server' => $pfhost
),
__METHOD__,
array( 'IGNORE' )
);
}
// When we upgrade to mysql 4.1, the insert+update
// can be merged into just a insert with this construct added:
// "ON DUPLICATE KEY UPDATE ".
// "pf_count=pf_count + VALUES(pf_count), ".
// "pf_time=pf_time + VALUES(pf_time)";
}
if ( $useTrx ) {
$dbw->endAtomic( __METHOD__ );
}
} catch ( DBError $e ) {
}
}
}
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