includes/ProfilerSimple.php

   1 <?php
   2 /**
   3  * Simple profiler base class
   4  */
   5
   6 /**
   7  * @todo document
   8  */
   9 require_once(dirname(__FILE__).'/Profiler.php');
  10
  11 class ProfilerSimple extends Profiler {
  12         var $mMinimumTime = 0;
  13         var $mProfileID = false;
  14
  15         function __construct() {
  16                 global $wgRequestTime,$wgRUstart;
  17                 if (!empty($wgRequestTime) && !empty($wgRUstart)) {
  18                         $this->mWorkStack[] = array( '-total', 0, $wgRequestTime,$this->getCpuTime($wgRUstart));
  19
  20                         $elapsedcpu = $this->getCpuTime() - $this->getCpuTime($wgRUstart);
  21                         $elapsedreal = microtime(true) - $wgRequestTime;
  22
  23                         $entry =& $this->mCollated["-setup"];
  24                         if (!is_array($entry)) {
  25                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  26                                 $this->mCollated["-setup"] =& $entry;
  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 setMinimum( $min ) {
  37                 $this->mMinimumTime = $min;
  38         }
  39
  40         function setProfileID( $id ) {
  41                 $this->mProfileID = $id;
  42         }
  43
  44         function getProfileID() {
  45                 if ( $this->mProfileID === false ) {
  46                         return wfWikiID();
  47                 } else {
  48                         return $this->mProfileID;
  49                 }
  50         }
  51
  52         function profileIn($functionname) {
  53                 global $wgDebugFunctionEntry;
  54                 if ($wgDebugFunctionEntry) {
  55                         $this->debug(str_repeat(' ', count($this->mWorkStack)).'Entering '.$functionname."\n");
  56                 }
  57                 $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), microtime(true), $this->getCpuTime());
  58         }
  59
  60         function profileOut($functionname) {
  61                 global $wgDebugFunctionEntry;
  62
  63                 if ($wgDebugFunctionEntry) {
  64                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  65                 }
  66
  67                 list($ofname, /* $ocount */ ,$ortime,$octime) = array_pop($this->mWorkStack);
  68
  69                 if (!$ofname) {
  70                         $this->debug("Profiling error: $functionname\n");
  71                 } else {
  72                         if ($functionname == 'close') {
  73                                 $message = "Profile section ended by close(): {$ofname}";
  74                                 $functionname = $ofname;
  75                                 $this->debug( "$message\n" );
  76                         }
  77                         elseif ($ofname != $functionname) {
  78                                 $message = "Profiling error: in({$ofname}), out($functionname)";
  79                                 $this->debug( "$message\n" );
  80                         }
  81                         $entry =& $this->mCollated[$functionname];
  82                         $elapsedcpu = $this->getCpuTime() - $octime;
  83                         $elapsedreal = microtime(true) - $ortime;
  84                         if (!is_array($entry)) {
  85                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  86                                 $this->mCollated[$functionname] =& $entry;
  87                         }
  88                         $entry['cpu'] += $elapsedcpu;
  89                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  90                         $entry['real'] += $elapsedreal;
  91                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  92                         $entry['count']++;
  93
  94                 }
  95         }
  96
  97         function getFunctionReport() {
  98                 /* Implement in output subclasses */
  99         }
 100
 101         function getCpuTime($ru=null) {
 102                 if ( function_exists( 'getrusage' ) ) {
 103                         if ( $ru == null )
 104                                 $ru = getrusage();
 105                         return ($ru['ru_utime.tv_sec'] + $ru['ru_stime.tv_sec'] + ($ru['ru_utime.tv_usec'] +
 106                                 $ru['ru_stime.tv_usec']) * 1e-6);
 107                 } else {
 108                         return 0;
 109                 }
 110         }
 111
 112         /* If argument is passed, it assumes that it is dual-format time string, returns proper float time value */
 113         function getTime($time=null) {
 114                 if ($time==null)
 115                         return microtime(true);
 116                 list($a,$b)=explode(" ",$time);
 117                 return (float)($a+$b);
 118         }
 119
 120         function debug( $s ) {
 121                 if (function_exists( 'wfDebug' ) ) {
 122                         wfDebug( $s );
 123                 }
 124         }
 125 }
 126 ?>