includes/profiler/ProfilerSimpleTrace.php

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