includes/profiler/output/ProfilerOutputDb.php

   1 <?php
   2 /**
   3  * Profiler storing information in the DB.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Profiler
  22  */
  23
  24 /**
  25  * Logs profiling data into the local DB
  26  *
  27  * $wgProfiler['class'] = 'ProfilerSimpleDB';
  28  *
  29  * @ingroup Profiler
  30  * @since 1.25
  31  */
  32 class ProfilerOutputDb extends ProfilerOutput {
  33         public function canUse() {
  34                 # Do not log anything if database is readonly (bug 5375)
  35                 return !wfReadOnly();
  36         }
  37
  38         public function log( array $stats ) {
  39                 global $wgProfilePerHost;
  40
  41                 if ( $wgProfilePerHost ) {
  42                         $pfhost = wfHostname();
  43                 } else {
  44                         $pfhost = '';
  45                 }
  46
  47                 try {
  48                         $dbw = wfGetDB( DB_MASTER );
  49                         $useTrx = ( $dbw->getType() === 'sqlite' ); // much faster
  50                         if ( $useTrx ) {
  51                                 $dbw->startAtomic( __METHOD__ );
  52                         }
  53                         foreach ( $stats as $data ) {
  54                                 $name = $data['name'];
  55                                 $eventCount = $data['calls'];
  56                                 $timeSum = (float)$data['real'];
  57                                 $memorySum = (float)$data['memory'];
  58                                 $name = substr( $name, 0, 255 );
  59
  60                                 // Kludge
  61                                 $timeSum = $timeSum >= 0 ? $timeSum : 0;
  62                                 $memorySum = $memorySum >= 0 ? $memorySum : 0;
  63
  64                                 $dbw->update( 'profiling',
  65                                         array(
  66                                                 "pf_count=pf_count+{$eventCount}",
  67                                                 "pf_time=pf_time+{$timeSum}",
  68                                                 "pf_memory=pf_memory+{$memorySum}",
  69                                         ),
  70                                         array(
  71                                                 'pf_name' => $name,
  72                                                 'pf_server' => $pfhost,
  73                                         ),
  74                                         __METHOD__ );
  75
  76                                 $rc = $dbw->affectedRows();
  77                                 if ( $rc == 0 ) {
  78                                         $dbw->insert( 'profiling',
  79                                                 array(
  80                                                         'pf_name' => $name,
  81                                                         'pf_count' => $eventCount,
  82                                                         'pf_time' => $timeSum,
  83                                                         'pf_memory' => $memorySum,
  84                                                         'pf_server' => $pfhost
  85                                                 ),
  86                                                 __METHOD__,
  87                                                 array( 'IGNORE' )
  88                                         );
  89                                 }
  90                                 // When we upgrade to mysql 4.1, the insert+update
  91                                 // can be merged into just a insert with this construct added:
  92                                 //     "ON DUPLICATE KEY UPDATE ".
  93                                 //     "pf_count=pf_count + VALUES(pf_count), ".
  94                                 //     "pf_time=pf_time + VALUES(pf_time)";
  95                         }
  96                         if ( $useTrx ) {
  97                                 $dbw->endAtomic( __METHOD__ );
  98                         }
  99                 } catch ( DBError $e ) {
 100                 }
 101         }
 102 }