maintenance/benchmarks/Benchmarker.php

   1 <?php
   2 /**
   3  * Create a doxygen subgroup of Maintenance for benchmarks
   4  * @defgroup Benchmark Benchmark
   5  * @ingroup Maintenance
   6  */
   7
   8 /**
   9  * TODO: report PHP version, OS ..
  10  * @file
  11  * @ingroup Benchmark
  12  */
  13
  14 require_once( dirname( __FILE__ ) . '/../Maintenance.php' );
  15 abstract class Benchmarker extends Maintenance {
  16         private $results;
  17
  18         public function __construct() {
  19                 parent::__construct();
  20                 $this->addOption( 'count', "How many time to run a benchmark", false, true );
  21         }
  22
  23         public function bench( array $benchs ) {
  24                 $bench_number = 0;
  25                 $count = $this->getOption( 'count', 100 );
  26
  27                 foreach( $benchs as $bench ) {
  28                         // handle empty args
  29                         if(!array_key_exists( 'args', $bench )) {
  30                                 $bench['args'] = array();
  31                         }
  32
  33                         $bench_number++;
  34                         $start = wfTime();
  35                         for( $i=0; $i<$count; $i++ ) {
  36                                 call_user_func_array( $bench['function'], $bench['args'] );
  37                         }
  38                         $delta = wfTime() - $start;
  39
  40                         // function passed as a callback
  41                         if( is_array( $bench['function'] ) ) {
  42                                 $ret = get_class( $bench['function'][0] ). '->' . $bench['function'][1];
  43                                 $bench['function'] = $ret;
  44                         }
  45
  46                         $this->results[$bench_number] = array(
  47                                 'function'  => $bench['function'],
  48                                 'arguments' => $bench['args'],
  49                                 'count'     => $count,
  50                                 'delta'     => $delta,
  51                                 'average'   => $delta / $count,
  52                                 );
  53                 }
  54         }
  55
  56         public function getFormattedResults( ) {
  57                 $ret = '';
  58                 foreach( $this->results as $res ) {
  59                         // show function with args
  60                         $ret .= sprintf( "%s times: function %s(%s) :\n",
  61                                 $res['count'],
  62                                 $res['function'],
  63                                 join( ', ', $res['arguments'] )
  64                         );
  65                         $ret .= sprintf( "   %6.2fms (%6.2fms each)\n",
  66                                 $res['delta']   * 1000,
  67                                 $res['average'] * 1000
  68                         );
  69                 }
  70                 return $ret;
  71         }
  72 }