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 ProfilerSimple() {
  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                                 $this->mCollated[$functionname] =& $entry;
  29
  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                 $memory = memory_get_usage();
  65
  66                 global $wgDebugFunctionEntry;
  67
  68                 if ($wgDebugFunctionEntry) {
  69                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  70                 }
  71
  72                 list($ofname,$ocount,$ortime,$octime) = array_pop($this->mWorkStack);
  73
  74                 if (!$ofname) {
  75                         $this->debug("Profiling error: $functionname\n");
  76                 } else {
  77                         if ($functionname == 'close') {
  78                                 $message = "Profile section ended by close(): {$ofname}";
  79                                 $functionname = $ofname;
  80                                 $this->debug( "$message\n" );
  81                         }
  82                         elseif ($ofname != $functionname) {
  83                                 $message = "Profiling error: in({$ofname}), out($functionname)";
  84                                 $this->debug( "$message\n" );
  85                         }
  86                         $entry =& $this->mCollated[$functionname];
  87                         $elapsedcpu = $this->getCpuTime() - $octime;
  88                         $elapsedreal = microtime(true) - $ortime;
  89                         if (!is_array($entry)) {
  90                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  91                                 $this->mCollated[$functionname] =& $entry;
  92
  93                         }
  94                         $entry['cpu'] += $elapsedcpu;
  95                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  96                         $entry['real'] += $elapsedreal;
  97                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  98                         $entry['count']++;
  99
 100                 }
 101         }
 102
 103         function getFunctionReport() {
 104                 /* Implement in output subclasses */
 105         }
 106
 107         function getCpuTime($ru=null) {
 108                 if ( function_exists( 'getrusage' ) ) {
 109                         if ( $ru == null )
 110                                 $ru = getrusage();
 111                         return ($ru['ru_utime.tv_sec'] + $ru['ru_stime.tv_sec'] + ($ru['ru_utime.tv_usec'] +
 112                                 $ru['ru_stime.tv_usec']) * 1e-6);
 113                 } else {
 114                         return 0;
 115                 }
 116         }
 117
 118         /* If argument is passed, it assumes that it is dual-format time string, returns proper float time value */
 119         function getTime($time=null) {
 120                 if ($time==null)
 121                         return microtime(true);
 122                 list($a,$b)=explode(" ",$time);
 123                 return (float)($a+$b);
 124         }
 125
 126         function debug( $s ) {
 127                 if (function_exists( 'wfDebug' ) ) {
 128                         wfDebug( $s );
 129                 }
 130         }
 131 }
 132 ?>