includes/profiler/ProfilerSectionOnly.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  */
  20
  21 /**
  22  * Profiler that only tracks explicit profiling sections
  23  *
  24  * @code
  25  * $wgProfiler['class'] = 'ProfilerSectionOnly';
  26  * $wgProfiler['output'] = 'text';
  27  * $wgProfiler['visible'] = true;
  28  * @endcode
  29  *
  30  * @ingroup Profiler
  31  * @since 1.25
  32  */
  33 class ProfilerSectionOnly extends Profiler {
  34         /** @var SectionProfiler */
  35         protected $sprofiler;
  36
  37         public function __construct( array $params = [] ) {
  38                 parent::__construct( $params );
  39                 $this->sprofiler = new SectionProfiler();
  40         }
  41
  42         public function scopedProfileIn( $section ) {
  43                 return $this->sprofiler->scopedProfileIn( $section );
  44         }
  45
  46         public function close() {
  47         }
  48
  49         public function getFunctionStats() {
  50                 return $this->sprofiler->getFunctionStats();
  51         }
  52
  53         public function getOutput() {
  54                 return $this->getFunctionReport();
  55         }
  56
  57         /**
  58          * Get a report of profiled functions sorted by inclusive wall clock time
  59          * in descending order.
  60          *
  61          * Each line of the report includes this data:
  62          * - Function name
  63          * - Number of times function was called
  64          * - Total wall clock time spent in function in microseconds
  65          * - Minimum wall clock time spent in function in microseconds
  66          * - Average wall clock time spent in function in microseconds
  67          * - Maximum wall clock time spent in function in microseconds
  68          * - Percentage of total wall clock time spent in function
  69          * - Total delta of memory usage from start to end of function in bytes
  70          *
  71          * @return string
  72          */
  73         protected function getFunctionReport() {
  74                 $data = $this->getFunctionStats();
  75                 usort( $data, function ( $a, $b ) {
  76                         if ( $a['real'] === $b['real'] ) {
  77                                 return 0;
  78                         }
  79                         return ( $a['real'] > $b['real'] ) ? -1 : 1; // descending
  80                 } );
  81
  82                 $width = 140;
  83                 $nameWidth = $width - 65;
  84                 $format = "%-{$nameWidth}s %6d %9d %9d %9d %9d %7.3f%% %9d";
  85                 $out = [];
  86                 $out[] = sprintf( "%-{$nameWidth}s %6s %9s %9s %9s %9s %7s %9s",
  87                         'Name', 'Calls', 'Total', 'Min', 'Each', 'Max', '%', 'Mem'
  88                 );
  89                 foreach ( $data as $stats ) {
  90                         $out[] = sprintf( $format,
  91                                 $stats['name'],
  92                                 $stats['calls'],
  93                                 $stats['real'] * 1000,
  94                                 $stats['min_real'] * 1000,
  95                                 $stats['real'] / $stats['calls'] * 1000,
  96                                 $stats['max_real'] * 1000,
  97                                 $stats['%real'],
  98                                 $stats['memory']
  99                         );
 100                 }
 101                 return implode( "\n", $out );
 102         }
 103 }