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 $trace = "";
  14         var $memory = 0;
  15
  16         function addInitialStack() {
  17                 $initialTime = $this->getInitialTime();
  18                 $initialCpu = $this->getInitialTime( 'cpu' );
  19                 if ( $initialTime !== null && $initialCpu !== null ) {
  20                         $this->mWorkStack[] = array( '-total', 0, $initialTime, $initialCpu );
  21                 }
  22                 $this->trace .= "Beginning trace: \n";
  23         }
  24
  25         function profileIn($functionname) {
  26                 $this->mWorkStack[] = array( $functionname, count( $this->mWorkStack ), $this->getTime(), $this->getTime( 'cpu' ) );
  27                 $this->trace .= "         " . sprintf("%6.1f",$this->memoryDiff()) .
  28                                 str_repeat( " ", count($this->mWorkStack)) . " > " . $functionname . "\n";
  29         }
  30
  31         function profileOut($functionname) {
  32                 global $wgDebugFunctionEntry;
  33
  34                 if ( $wgDebugFunctionEntry ) {
  35                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  36                 }
  37
  38                 list( $ofname, /* $ocount */ , $ortime ) = array_pop( $this->mWorkStack );
  39
  40                 if ( !$ofname ) {
  41                         $this->trace .= "Profiling error: $functionname\n";
  42                 } else {
  43                         if ( $functionname == 'close' ) {
  44                                 $message = "Profile section ended by close(): {$ofname}";
  45                                 $functionname = $ofname;
  46                                 $this->trace .= $message . "\n";
  47                         }
  48                         elseif ( $ofname != $functionname ) {
  49                                 $this->trace .= "Profiling error: in({$ofname}), out($functionname)";
  50                         }
  51                         $elapsedreal = $this->getTime() - $ortime;
  52                         $this->trace .= sprintf( "%03.6f %6.1f", $elapsedreal, $this->memoryDiff() ) .
  53                                         str_repeat(" ", count( $this->mWorkStack ) + 1 ) . " < " . $functionname . "\n";
  54                 }
  55         }
  56
  57         function memoryDiff() {
  58                 $diff = memory_get_usage() - $this->memory;
  59                 $this->memory = memory_get_usage();
  60                 return $diff / 1024;
  61         }
  62
  63         function logData() {
  64                 print "<!-- \n {$this->trace} \n -->";
  65         }
  66 }