includes/ProfilerSimple.php

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