includes/profiler/ProfilerSimple.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup Profiler
   5  */
   6
   7 /**
   8  * Simple profiler base class.
   9  * @todo document methods (?)
  10  * @ingroup Profiler
  11  */
  12 class ProfilerSimple extends Profiler {
  13         var $mMinimumTime = 0;
  14         var $mProfileID = false;
  15
  16         function __construct() {
  17                 global $wgRequestTime, $wgRUstart;
  18                 if (!empty($wgRequestTime) && !empty($wgRUstart)) {
  19                         $this->mWorkStack[] = array( '-total', 0, $wgRequestTime,$this->getCpuTime($wgRUstart));
  20
  21                         $elapsedcpu = $this->getCpuTime() - $this->getCpuTime($wgRUstart);
  22                         $elapsedreal = microtime(true) - $wgRequestTime;
  23
  24                         $entry =& $this->mCollated["-setup"];
  25                         if (!is_array($entry)) {
  26                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  27                                 $this->mCollated["-setup"] =& $entry;
  28                         }
  29                         $entry['cpu'] += $elapsedcpu;
  30                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  31                         $entry['real'] += $elapsedreal;
  32                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  33                         $entry['count']++;
  34                 }
  35         }
  36
  37         function setMinimum( $min ) {
  38                 $this->mMinimumTime = $min;
  39         }
  40
  41         function setProfileID( $id ) {
  42                 $this->mProfileID = $id;
  43         }
  44
  45         function getProfileID() {
  46                 if ( $this->mProfileID === false ) {
  47                         return wfWikiID();
  48                 } else {
  49                         return $this->mProfileID;
  50                 }
  51         }
  52
  53         function profileIn($functionname) {
  54                 global $wgDebugFunctionEntry;
  55                 if ($wgDebugFunctionEntry) {
  56                         $this->debug(str_repeat(' ', count($this->mWorkStack)).'Entering '.$functionname."\n");
  57                 }
  58                 $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), microtime(true), $this->getCpuTime());
  59         }
  60
  61         function profileOut($functionname) {
  62                 global $wgDebugFunctionEntry;
  63
  64                 if ($wgDebugFunctionEntry) {
  65                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  66                 }
  67
  68                 list($ofname, /* $ocount */ ,$ortime,$octime) = array_pop($this->mWorkStack);
  69
  70                 if (!$ofname) {
  71                         $this->debug("Profiling error: $functionname\n");
  72                 } else {
  73                         if ($functionname == 'close') {
  74                                 $message = "Profile section ended by close(): {$ofname}";
  75                                 $functionname = $ofname;
  76                                 $this->debug( "$message\n" );
  77                                 $this->mCollated[$message] = array(
  78                                         'real' => 0.0, 'count' => 1);
  79                         }
  80                         elseif ($ofname != $functionname) {
  81                                 $message = "Profiling error: in({$ofname}), out($functionname)";
  82                                 $this->debug( "$message\n" );
  83                                 $this->mCollated[$message] = array(
  84                                         'real' => 0.0, 'count' => 1);
  85                         }
  86                         $entry =& $this->mCollated[$functionname];
  87                         $elapsedcpu = $this->getCpuTime() - $octime;
  88                         $elapsedreal = microtime(true) - $ortime;
  89                         if (!is_array($entry)) {
  90                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  91                                 $this->mCollated[$functionname] =& $entry;
  92                         }
  93                         $entry['cpu'] += $elapsedcpu;
  94                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  95                         $entry['real'] += $elapsedreal;
  96                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  97                         $entry['count']++;
  98
  99                 }
 100         }
 101
 102         function getFunctionReport() {
 103                 /* Implement in output subclasses */
 104         }
 105
 106         function getCpuTime($ru=null) {
 107                 if ( function_exists( 'getrusage' ) ) {
 108                         if ( $ru == null ) {
 109                                 $ru = getrusage();
 110                         }
 111                         return ($ru['ru_utime.tv_sec'] + $ru['ru_stime.tv_sec'] + ($ru['ru_utime.tv_usec'] +
 112                                 $ru['ru_stime.tv_usec']) * 1e-6);
 113                 } else {
 114                         return 0;
 115                 }
 116         }
 117
 118         /* If argument is passed, it assumes that it is dual-format time string, returns proper float time value */
 119         function getTime($time=null) {
 120                 if ($time==null) {
 121                         return microtime(true);
 122                 }
 123                 list($a,$b)=explode(" ",$time);
 124                 return (float)($a+$b);
 125         }
 126 }