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