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