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         function ProfilerSimple() {
  15                 global $wgRequestTime,$wgRUstart;
  16                 if (!empty($wgRequestTime) && !empty($wgRUstart)) {
  17                         $this->mWorkStack[] = array( '-total', 0, $wgRequestTime,$this->getCpuTime($wgRUstart));
  18
  19                         $elapsedcpu = $this->getCpuTime() - $this->getCpuTime($wgRUstart);
  20                         $elapsedreal = microtime(true) - $wgRequestTime;
  21
  22                         $entry =& $this->mCollated["-setup"];
  23                         if (!is_array($entry)) {
  24                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  25                                 $this->mCollated[$functionname] =& $entry;
  26
  27                         }
  28                         $entry['cpu'] += $elapsedcpu;
  29                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  30                         $entry['real'] += $elapsedreal;
  31                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  32                         $entry['count']++;
  33                 }
  34         }
  35
  36         function profileIn($functionname) {
  37                 global $wgDebugFunctionEntry;
  38                 if ($wgDebugFunctionEntry) {
  39                         $this->debug(str_repeat(' ', count($this->mWorkStack)).'Entering '.$functionname."\n");
  40                 }
  41                 $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), microtime(true), $this->getCpuTime());
  42         }
  43
  44         function profileOut($functionname) {
  45                 $memory = memory_get_usage();
  46
  47                 global $wgDebugFunctionEntry;
  48
  49                 if ($wgDebugFunctionEntry) {
  50                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  51                 }
  52
  53                 list($ofname,$ocount,$ortime,$octime) = array_pop($this->mWorkStack);
  54
  55                 if (!$ofname) {
  56                         $this->debug("Profiling error: $functionname\n");
  57                 } else {
  58                         if ($functionname == 'close') {
  59                                 $message = "Profile section ended by close(): {$ofname}";
  60                                 $functionname = $ofname;
  61                                 $this->debug( "$message\n" );
  62                         }
  63                         elseif ($ofname != $functionname) {
  64                                 $message = "Profiling error: in({$ofname}), out($functionname)";
  65                                 $this->debug( "$message\n" );
  66                         }
  67                         $entry =& $this->mCollated[$functionname];
  68                         $elapsedcpu = $this->getCpuTime() - $octime;
  69                         $elapsedreal = microtime(true) - $ortime;
  70                         if (!is_array($entry)) {
  71                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  72                                 $this->mCollated[$functionname] =& $entry;
  73
  74                         }
  75                         $entry['cpu'] += $elapsedcpu;
  76                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  77                         $entry['real'] += $elapsedreal;
  78                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  79                         $entry['count']++;
  80
  81                 }
  82         }
  83
  84         function getFunctionReport() {
  85                 /* Implement in output subclasses */
  86         }
  87
  88         function getCpuTime($ru=null) {
  89                 if ( function_exists( 'getrusage' ) ) {
  90                         if ( $ru == null )
  91                                 $ru = getrusage();
  92                         return ($ru['ru_utime.tv_sec'] + $ru['ru_stime.tv_sec'] + ($ru['ru_utime.tv_usec'] +
  93                                 $ru['ru_stime.tv_usec']) * 1e-6);
  94                 } else {
  95                         return 0;
  96                 }
  97         }
  98
  99         /* If argument is passed, it assumes that it is dual-format time string, returns proper float time value */
 100         function getTime($time=null) {
 101                 if ($time==null)
 102                         return microtime(true);
 103                 list($a,$b)=explode(" ",$time);
 104                 return (float)($a+$b);
 105         }
 106
 107         function debug( $s ) {
 108                 if (function_exists( 'wfDebug' ) ) {
 109                         wfDebug( $s );
 110                 }
 111         }
 112 }
 113 ?>