includes/ProfilerSimple.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup Profiler
   5  */
   6
   7 if ( !class_exists( 'Profiler' ) ) {
   8         require_once(dirname(__FILE__).'/Profiler.php');
   9 }
  10
  11 /**
  12  * Simple profiler base class.
  13  * @todo document methods (?)
  14  * @ingroup Profiler
  15  */
  16 class ProfilerSimple extends Profiler {
  17         var $mMinimumTime = 0;
  18         var $mProfileID = false;
  19
  20         function __construct() {
  21                 global $wgRequestTime, $wgRUstart;
  22                 if (!empty($wgRequestTime) && !empty($wgRUstart)) {
  23                         $this->mWorkStack[] = array( '-total', 0, $wgRequestTime,$this->getCpuTime($wgRUstart));
  24
  25                         $elapsedcpu = $this->getCpuTime() - $this->getCpuTime($wgRUstart);
  26                         $elapsedreal = microtime(true) - $wgRequestTime;
  27
  28                         $entry =& $this->mCollated["-setup"];
  29                         if (!is_array($entry)) {
  30                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  31                                 $this->mCollated["-setup"] =& $entry;
  32                         }
  33                         $entry['cpu'] += $elapsedcpu;
  34                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  35                         $entry['real'] += $elapsedreal;
  36                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
  37                         $entry['count']++;
  38                 }
  39         }
  40
  41         function setMinimum( $min ) {
  42                 $this->mMinimumTime = $min;
  43         }
  44
  45         function setProfileID( $id ) {
  46                 $this->mProfileID = $id;
  47         }
  48
  49         function getProfileID() {
  50                 if ( $this->mProfileID === false ) {
  51                         return wfWikiID();
  52                 } else {
  53                         return $this->mProfileID;
  54                 }
  55         }
  56
  57         function profileIn($functionname) {
  58                 global $wgDebugFunctionEntry;
  59                 if ($wgDebugFunctionEntry) {
  60                         $this->debug(str_repeat(' ', count($this->mWorkStack)).'Entering '.$functionname."\n");
  61                 }
  62                 $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), microtime(true), $this->getCpuTime());
  63         }
  64
  65         function profileOut($functionname) {
  66                 global $wgDebugFunctionEntry;
  67
  68                 if ($wgDebugFunctionEntry) {
  69                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  70                 }
  71
  72                 list($ofname, /* $ocount */ ,$ortime,$octime) = array_pop($this->mWorkStack);
  73
  74                 if (!$ofname) {
  75                         $this->debug("Profiling error: $functionname\n");
  76                 } else {
  77                         if ($functionname == 'close') {
  78                                 $message = "Profile section ended by close(): {$ofname}";
  79                                 $functionname = $ofname;
  80                                 $this->debug( "$message\n" );
  81                                 $this->mCollated[$message] = array(
  82                                         'real' => 0.0, 'count' => 1);
  83                         }
  84                         elseif ($ofname != $functionname) {
  85                                 $message = "Profiling error: in({$ofname}), out($functionname)";
  86                                 $this->debug( "$message\n" );
  87                                 $this->mCollated[$message] = array(
  88                                         'real' => 0.0, 'count' => 1);
  89                         }
  90                         $entry =& $this->mCollated[$functionname];
  91                         $elapsedcpu = $this->getCpuTime() - $octime;
  92                         $elapsedreal = microtime(true) - $ortime;
  93                         if (!is_array($entry)) {
  94                                 $entry = array('cpu'=> 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0);
  95                                 $this->mCollated[$functionname] =& $entry;
  96                         }
  97                         $entry['cpu'] += $elapsedcpu;
  98                         $entry['cpu_sq'] += $elapsedcpu*$elapsedcpu;
  99                         $entry['real'] += $elapsedreal;
 100                         $entry['real_sq'] += $elapsedreal*$elapsedreal;
 101                         $entry['count']++;
 102
 103                 }
 104         }
 105
 106         function getFunctionReport() {
 107                 /* Implement in output subclasses */
 108         }
 109
 110         function getCpuTime($ru=null) {
 111                 if ( function_exists( 'getrusage' ) ) {
 112                         if ( $ru == null )
 113                                 $ru = getrusage();
 114                         return ($ru['ru_utime.tv_sec'] + $ru['ru_stime.tv_sec'] + ($ru['ru_utime.tv_usec'] +
 115                                 $ru['ru_stime.tv_usec']) * 1e-6);
 116                 } else {
 117                         return 0;
 118                 }
 119         }
 120
 121         /* If argument is passed, it assumes that it is dual-format time string, returns proper float time value */
 122         function getTime($time=null) {
 123                 if ($time==null)
 124                         return microtime(true);
 125                 list($a,$b)=explode(" ",$time);
 126                 return (float)($a+$b);
 127         }
 128 }