includes/ProfilerSimpleTrace.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup Profiler
   5  */
   6
   7 if ( !class_exists( 'ProfilerSimple' ) ) {
   8         require_once(dirname(__FILE__).'/ProfilerSimple.php');
   9 }
  10
  11 /**
  12  * Execution trace
  13  * @todo document methods (?)
  14  * @ingroup Profiler
  15  */
  16 class ProfilerSimpleTrace extends ProfilerSimple {
  17         var $mMinimumTime = 0;
  18         var $mProfileID = false;
  19         var $trace = "";
  20         var $memory = 0;
  21
  22         function __construct() {
  23                 global $wgRequestTime, $wgRUstart;
  24                 if (!empty($wgRequestTime) && !empty($wgRUstart)) {
  25                         $this->mWorkStack[] = array( '-total', 0, $wgRequestTime,$this->getCpuTime($wgRUstart));
  26                         $elapsedcpu = $this->getCpuTime() - $this->getCpuTime($wgRUstart);
  27                         $elapsedreal = microtime(true) - $wgRequestTime;
  28                 }
  29                 $this->trace .= "Beginning trace: \n";
  30         }
  31
  32         function profileIn($functionname) {
  33                 $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), microtime(true), $this->getCpuTime());
  34                 $this->trace .= "         " . sprintf("%6.1f",$this->memoryDiff()) . str_repeat( " ", count($this->mWorkStack)) . " > " . $functionname . "\n";
  35         }
  36
  37         function profileOut($functionname) {
  38                 global $wgDebugFunctionEntry;
  39
  40                 if ($wgDebugFunctionEntry) {
  41                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  42                 }
  43
  44                 list($ofname, /* $ocount */ ,$ortime,$octime) = array_pop($this->mWorkStack);
  45
  46                 if (!$ofname) {
  47                         $this->trace .= "Profiling error: $functionname\n";
  48                 } else {
  49                         if ($functionname == 'close') {
  50                                 $message = "Profile section ended by close(): {$ofname}";
  51                                 $functionname = $ofname;
  52                                 $this->trace .= $message . "\n";
  53                         }
  54                         elseif ($ofname != $functionname) {
  55                                 $this->trace .= "Profiling error: in({$ofname}), out($functionname)";
  56                         }
  57                         $elapsedcpu = $this->getCpuTime() - $octime;
  58                         $elapsedreal = microtime(true) - $ortime;
  59                         $this->trace .= sprintf("%03.6f %6.1f",$elapsedreal,$this->memoryDiff()) .  str_repeat(" ",count($this->mWorkStack)+1) . " < " . $functionname . "\n";
  60                 }
  61         }
  62
  63         function memoryDiff() {
  64                 $diff = memory_get_usage() - $this->memory;
  65                 $this->memory = memory_get_usage();
  66                 return $diff/1024;
  67         }
  68
  69         function getOutput() {
  70                 print "<!-- \n {$this->trace} \n -->";
  71         }
  72 }