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 class ProfilerSimple extends Profiler {
  12         function ProfilerSimple() {
  13                 global $wgRequestTime,$wgRUstart;
  14                 if (!empty($wgRequestTime) && !empty($wgRUstart)) {
  15                         $this->mWorkStack[] = array( '-total', 0, $this->getTime($wgRequestTime),$this->getCpuTime($wgRUstart));
  16
  17                         $elapsedcpu = $this->getCpuTime() - $this->getCpuTime($wgRUstart);
  18                         $elapsedreal = $this->getTime() - $this->getTime($wgRequestTime);
  19
  20                         $entry =& $this->mCollated["-setup"];
  21                         $entry['cpu'] += $elapsedcpu;
  22                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  23                         $entry['real'] += $elapsedreal;
  24                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  25                         $entry['count']++;
  26                 }
  27         }
  28
  29         function profileIn($functionname) {
  30                 global $wgDebugFunctionEntry;
  31                 if ($wgDebugFunctionEntry && function_exists('wfDebug')) {
  32                         wfDebug(str_repeat(' ', count($this->mWorkStack)).'Entering '.$functionname."\n");
  33                 }
  34                 $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), $this->getTime(), $this->getCpuTime());
  35         }
  36
  37         function profileOut($functionname) {
  38                 $memory = memory_get_usage();
  39
  40                 global $wgDebugFunctionEntry;
  41
  42                 if ($wgDebugFunctionEntry && function_exists('wfDebug')) {
  43                         wfDebug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  44                 }
  45
  46                 list($ofname,$ocount,$ortime,$octime) = array_pop($this->mWorkStack);
  47
  48                 if (!$ofname) {
  49                         wfDebug("Profiling error: $functionname\n");
  50                 } else {
  51                         if ($functionname == 'close') {
  52                                 $message = "Profile section ended by close(): {$ofname}";
  53                                 $functionname = $ofname;
  54                                 wfDebug( "$message\n" );
  55                         }
  56                         elseif ($ofname != $functionname) {
  57                                 $message = "Profiling error: in({$ofname}), out($functionname)";
  58                                 wfDebug( "$message\n" );
  59                         }
  60                         $entry =& $this->mCollated[$functionname];
  61
  62                         $elapsedcpu = $this->getCpuTime() - $octime;
  63                         $elapsedreal = $this->getTime() - $ortime;
  64
  65                         $entry['cpu'] += $elapsedcpu;
  66                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  67                         $entry['real'] += $elapsedreal;
  68                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  69                         $entry['count']++;
  70
  71                 }
  72         }
  73
  74         function getFunctionReport() {
  75                 /* Implement in output subclasses */
  76         }
  77
  78         function getCpuTime($ru=null) {
  79                 if ($ru==null)
  80                         $ru=getrusage();
  81                 return ($ru['ru_utime.tv_sec']+$ru['ru_stime.tv_sec']+($ru['ru_utime.tv_usec']+$ru['ru_stime.tv_usec'])*1e-6);
  82         }
  83
  84         function getTime($time=null) {
  85                 if ($time==null)
  86                         $time=microtime();
  87                 list($a,$b)=explode(" ",$time);
  88                 return (float)($a+$b);
  89         }
  90 }
  91 ?>