includes/ProfilerSimple.php

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