includes/ProfilerSimple.php

   1 <?php
   2 /**
   3  * Simple profiler base class
   4  * @package MediaWiki
   5  */
   6
   7 /**
   8  * @todo document
   9  * @package MediaWiki
  10  */
  11 require_once(dirname(__FILE__).'/Profiler.php');
  12
  13 class ProfilerSimple extends Profiler {
  14         var $mMinimumTime = 0;
  15         var $mProfileID = false;
  16
  17         function __construct() {
  18                 global $wgRequestTime,$wgRUstart;
  19                 if (!empty($wgRequestTime) && !empty($wgRUstart)) {
  20                         $this->mWorkStack[] = array( '-total', 0, $wgRequestTime,$this->getCpuTime($wgRUstart));
  21
  22                         $elapsedcpu = $this->getCpuTime() - $this->getCpuTime($wgRUstart);
  23                         $elapsedreal = microtime(true) - $wgRequestTime;
  24
  25                         $entry =& $this->mCollated["-setup"];
  26                         if (!is_array($entry)) {
  27                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  28                                 $this->mCollated["-setup"] =& $entry;
  29                         }
  30                         $entry['cpu'] += $elapsedcpu;
  31                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  32                         $entry['real'] += $elapsedreal;
  33                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  34                         $entry['count']++;
  35                 }
  36         }
  37
  38         function setMinimum( $min ) {
  39                 $this->mMinimumTime = $min;
  40         }
  41
  42         function setProfileID( $id ) {
  43                 $this->mProfileID = $id;
  44         }
  45
  46         function getProfileID() {
  47                 if ( $this->mProfileID === false ) {
  48                         return wfWikiID();
  49                 } else {
  50                         return $this->mProfileID;
  51                 }
  52         }
  53
  54         function profileIn($functionname) {
  55                 global $wgDebugFunctionEntry;
  56                 if ($wgDebugFunctionEntry) {
  57                         $this->debug(str_repeat(' ', count($this->mWorkStack)).'Entering '.$functionname."\n");
  58                 }
  59                 $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), microtime(true), $this->getCpuTime());
  60         }
  61
  62         function profileOut($functionname) {
  63                 global $wgDebugFunctionEntry;
  64
  65                 if ($wgDebugFunctionEntry) {
  66                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  67                 }
  68
  69                 list($ofname, /* $ocount */ ,$ortime,$octime) = array_pop($this->mWorkStack);
  70
  71                 if (!$ofname) {
  72                         $this->debug("Profiling error: $functionname\n");
  73                 } else {
  74                         if ($functionname == 'close') {
  75                                 $message = "Profile section ended by close(): {$ofname}";
  76                                 $functionname = $ofname;
  77                                 $this->debug( "$message\n" );
  78                         }
  79                         elseif ($ofname != $functionname) {
  80                                 $message = "Profiling error: in({$ofname}), out($functionname)";
  81                                 $this->debug( "$message\n" );
  82                         }
  83                         $entry =& $this->mCollated[$functionname];
  84                         $elapsedcpu = $this->getCpuTime() - $octime;
  85                         $elapsedreal = microtime(true) - $ortime;
  86                         if (!is_array($entry)) {
  87                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  88                                 $this->mCollated[$functionname] =& $entry;
  89                         }
  90                         $entry['cpu'] += $elapsedcpu;
  91                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  92                         $entry['real'] += $elapsedreal;
  93                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  94                         $entry['count']++;
  95
  96                 }
  97         }
  98
  99         function getFunctionReport() {
 100                 /* Implement in output subclasses */
 101         }
 102
 103         function getCpuTime($ru=null) {
 104                 if ( function_exists( 'getrusage' ) ) {
 105                         if ( $ru == null )
 106                                 $ru = getrusage();
 107                         return ($ru['ru_utime.tv_sec'] + $ru['ru_stime.tv_sec'] + ($ru['ru_utime.tv_usec'] +
 108                                 $ru['ru_stime.tv_usec']) * 1e-6);
 109                 } else {
 110                         return 0;
 111                 }
 112         }
 113
 114         /* If argument is passed, it assumes that it is dual-format time string, returns proper float time value */
 115         function getTime($time=null) {
 116                 if ($time==null)
 117                         return microtime(true);
 118                 list($a,$b)=explode(" ",$time);
 119                 return (float)($a+$b);
 120         }
 121
 122         function debug( $s ) {
 123                 if (function_exists( 'wfDebug' ) ) {
 124                         wfDebug( $s );
 125                 }
 126         }
 127 }
 128 ?>