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  * @author Aaron Schulz
  31  * @ingroup Profiler
  32  * @since 1.25
  33  */
  34 class ProfilerSectionOnly extends Profiler {
  35         /** @var SectionProfiler */
  36         protected $sprofiler;
  37
  38         public function __construct( array $params = array() ) {
  39                 parent::__construct( $params );
  40                 $this->sprofiler = new SectionProfiler();
  41         }
  42
  43         public function scopedProfileIn( $section ) {
  44                 return $this->sprofiler->scopedProfileIn( $section );
  45         }
  46
  47         public function close() {
  48         }
  49
  50         public function getFunctionStats() {
  51                 return $this->sprofiler->getFunctionStats();
  52         }
  53
  54         public function getOutput() {
  55                 return $this->getFunctionReport();
  56         }
  57
  58         /**
  59          * Get a report of profiled functions sorted by inclusive wall clock time
  60          * in descending order.
  61          *
  62          * Each line of the report includes this data:
  63          * - Function name
  64          * - Number of times function was called
  65          * - Total wall clock time spent in function in microseconds
  66          * - Minimum wall clock time spent in function in microseconds
  67          * - Average wall clock time spent in function in microseconds
  68          * - Maximum wall clock time spent in function in microseconds
  69          * - Percentage of total wall clock time spent in function
  70          * - Total delta of memory usage from start to end of function in bytes
  71          *
  72          * @return string
  73          */
  74         protected function getFunctionReport() {
  75                 $data = $this->getFunctionStats();
  76                 usort( $data, function( $a, $b ) {
  77                         if ( $a['real'] === $b['real'] ) {
  78                                 return 0;
  79                         }
  80                         return ( $a['real'] > $b['real'] ) ? -1 : 1; // descending
  81                 } );
  82
  83                 $width = 140;
  84                 $nameWidth = $width - 65;
  85                 $format = "%-{$nameWidth}s %6d %9d %9d %9d %9d %7.3f%% %9d";
  86                 $out = array();
  87                 $out[] = sprintf( "%-{$nameWidth}s %6s %9s %9s %9s %9s %7s %9s",
  88                         'Name', 'Calls', 'Total', 'Min', 'Each', 'Max', '%', 'Mem'
  89                 );
  90                 foreach ( $data as $stats ) {
  91                         $out[] = sprintf( $format,
  92                                 $stats['name'],
  93                                 $stats['calls'],
  94                                 $stats['real'] * 1000,
  95                                 $stats['min_real'] * 1000,
  96                                 $stats['real'] / $stats['calls'] * 1000,
  97                                 $stats['max_real'] * 1000,
  98                                 $stats['%real'],
  99                                 $stats['memory']
 100                         );
 101                 }
 102                 return implode( "\n", $out );
 103         }
 104 }