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__).'/Profiling.php');
  12
  13 class ProfilerSimple extends Profiler {
  14         function ProfilerSimple() {
  15                 global $wgRequestTime,$wgRUstart;
  16                 if (!empty($wgRequestTime) && !empty($wgRUstart)) {
  17                         $this->mWorkStack[] = array( '-total', 0, $this->getTime($wgRequestTime),$this->getCpuTime($wgRUstart));
  18
  19                         $elapsedcpu = $this->getCpuTime() - $this->getCpuTime($wgRUstart);
  20                         $elapsedreal = $this->getTime() - $this->getTime($wgRequestTime);
  21
  22                         $entry =& $this->mCollated["-setup"];
  23                         $entry['cpu'] += $elapsedcpu;
  24                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  25                         $entry['real'] += $elapsedreal;
  26                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  27                         $entry['count']++;
  28                 }
  29         }
  30
  31         function profileIn($functionname) {
  32                 global $wgDebugFunctionEntry;
  33                 if ($wgDebugFunctionEntry) {
  34                         $this->debug(str_repeat(' ', count($this->mWorkStack)).'Entering '.$functionname."\n");
  35                 }
  36                 $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), $this->getTime(), $this->getCpuTime());
  37         }
  38
  39         function profileOut($functionname) {
  40                 $memory = memory_get_usage();
  41
  42                 global $wgDebugFunctionEntry;
  43
  44                 if ($wgDebugFunctionEntry) {
  45                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  46                 }
  47
  48                 list($ofname,$ocount,$ortime,$octime) = array_pop($this->mWorkStack);
  49
  50                 if (!$ofname) {
  51                         $this->debug("Profiling error: $functionname\n");
  52                 } else {
  53                         if ($functionname == 'close') {
  54                                 $message = "Profile section ended by close(): {$ofname}";
  55                                 $functionname = $ofname;
  56                                 $this->debug( "$message\n" );
  57                         }
  58                         elseif ($ofname != $functionname) {
  59                                 $message = "Profiling error: in({$ofname}), out($functionname)";
  60                                 $this->debug( "$message\n" );
  61                         }
  62                         $entry =& $this->mCollated[$functionname];
  63
  64                         $elapsedcpu = $this->getCpuTime() - $octime;
  65                         $elapsedreal = $this->getTime() - $ortime;
  66
  67                         $entry['cpu'] += $elapsedcpu;
  68                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  69                         $entry['real'] += $elapsedreal;
  70                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  71                         $entry['count']++;
  72
  73                 }
  74         }
  75
  76         function getFunctionReport() {
  77                 /* Implement in output subclasses */
  78         }
  79
  80         function getCpuTime($ru=null) {
  81                 if ($ru==null)
  82                         $ru=getrusage();
  83                 return ($ru['ru_utime.tv_sec']+$ru['ru_stime.tv_sec']+($ru['ru_utime.tv_usec']+$ru['ru_stime.tv_usec'])*1e-6);
  84         }
  85
  86         function getTime($time=null) {
  87                 if ($time==null)
  88                         $time=microtime();
  89                 list($a,$b)=explode(" ",$time);
  90                 return (float)($a+$b);
  91         }
  92
  93         function debug( $s ) {
  94                 if (function_exists( 'wfDebug' ) ) {
  95                         wfDebug( $s );
  96                 }
  97         }
  98 }
  99 ?>