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
  16         function ProfilerSimple() {
  17                 global $wgRequestTime,$wgRUstart;
  18                 if (!empty($wgRequestTime) && !empty($wgRUstart)) {
  19                         $this->mWorkStack[] = array( '-total', 0, $wgRequestTime,$this->getCpuTime($wgRUstart));
  20
  21                         $elapsedcpu = $this->getCpuTime() - $this->getCpuTime($wgRUstart);
  22                         $elapsedreal = microtime(true) - $wgRequestTime;
  23
  24                         $entry =& $this->mCollated["-setup"];
  25                         if (!is_array($entry)) {
  26                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  27                                 $this->mCollated[$functionname] =& $entry;
  28
  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 = $min;
  40         }
  41
  42         function profileIn($functionname) {
  43                 global $wgDebugFunctionEntry;
  44                 if ($wgDebugFunctionEntry) {
  45                         $this->debug(str_repeat(' ', count($this->mWorkStack)).'Entering '.$functionname."\n");
  46                 }
  47                 $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), microtime(true), $this->getCpuTime());
  48         }
  49
  50         function profileOut($functionname) {
  51                 $memory = memory_get_usage();
  52
  53                 global $wgDebugFunctionEntry;
  54
  55                 if ($wgDebugFunctionEntry) {
  56                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  57                 }
  58
  59                 list($ofname,$ocount,$ortime,$octime) = array_pop($this->mWorkStack);
  60
  61                 if (!$ofname) {
  62                         $this->debug("Profiling error: $functionname\n");
  63                 } else {
  64                         if ($functionname == 'close') {
  65                                 $message = "Profile section ended by close(): {$ofname}";
  66                                 $functionname = $ofname;
  67                                 $this->debug( "$message\n" );
  68                         }
  69                         elseif ($ofname != $functionname) {
  70                                 $message = "Profiling error: in({$ofname}), out($functionname)";
  71                                 $this->debug( "$message\n" );
  72                         }
  73                         $entry =& $this->mCollated[$functionname];
  74                         $elapsedcpu = $this->getCpuTime() - $octime;
  75                         $elapsedreal = microtime(true) - $ortime;
  76                         if (!is_array($entry)) {
  77                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  78                                 $this->mCollated[$functionname] =& $entry;
  79
  80                         }
  81                         $entry['cpu'] += $elapsedcpu;
  82                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  83                         $entry['real'] += $elapsedreal;
  84                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  85                         $entry['count']++;
  86
  87                 }
  88         }
  89
  90         function getFunctionReport() {
  91                 /* Implement in output subclasses */
  92         }
  93
  94         function getCpuTime($ru=null) {
  95                 if ( function_exists( 'getrusage' ) ) {
  96                         if ( $ru == null )
  97                                 $ru = getrusage();
  98                         return ($ru['ru_utime.tv_sec'] + $ru['ru_stime.tv_sec'] + ($ru['ru_utime.tv_usec'] +
  99                                 $ru['ru_stime.tv_usec']) * 1e-6);
 100                 } else {
 101                         return 0;
 102                 }
 103         }
 104
 105         /* If argument is passed, it assumes that it is dual-format time string, returns proper float time value */
 106         function getTime($time=null) {
 107                 if ($time==null)
 108                         return microtime(true);
 109                 list($a,$b)=explode(" ",$time);
 110                 return (float)($a+$b);
 111         }
 112
 113         function debug( $s ) {
 114                 if (function_exists( 'wfDebug' ) ) {
 115                         wfDebug( $s );
 116                 }
 117         }
 118 }
 119 ?>