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                 }
  27                 $this->trace .= "Beginning trace: \n";
  28         }
  29
  30         function profileIn($functionname) {
  31                 $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), microtime(true), $this->getCpuTime());
  32                 $this->trace .= "         " . sprintf("%6.1f",$this->memoryDiff()) .
  33                                 str_repeat( " ", count($this->mWorkStack)) . " > " . $functionname . "\n";
  34         }
  35
  36         function profileOut($functionname) {
  37                 global $wgDebugFunctionEntry;
  38
  39                 if ( $wgDebugFunctionEntry ) {
  40                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  41                 }
  42
  43                 list( $ofname, /* $ocount */ , $ortime, $octime ) = array_pop( $this->mWorkStack );
  44
  45                 if ( !$ofname ) {
  46                         $this->trace .= "Profiling error: $functionname\n";
  47                 } else {
  48                         if ( $functionname == 'close' ) {
  49                                 $message = "Profile section ended by close(): {$ofname}";
  50                                 $functionname = $ofname;
  51                                 $this->trace .= $message . "\n";
  52                         }
  53                         elseif ( $ofname != $functionname ) {
  54                                 $this->trace .= "Profiling error: in({$ofname}), out($functionname)";
  55                         }
  56                         $elapsedreal = microtime( true ) - $ortime;
  57                         $this->trace .= sprintf( "%03.6f %6.1f", $elapsedreal, $this->memoryDiff() ) .
  58                                         str_repeat(" ", count( $this->mWorkStack ) + 1 ) . " < " . $functionname . "\n";
  59                 }
  60         }
  61
  62         function memoryDiff() {
  63                 $diff = memory_get_usage() - $this->memory;
  64                 $this->memory = memory_get_usage();
  65                 return $diff / 1024;
  66         }
  67
  68         function getOutput() {
  69                 print "<!-- \n {$this->trace} \n -->";
  70         }
  71 }