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