includes/profiler/ProfilerSimpleTrace.php

   1 <?php
   2 /**
   3  * Profiler showing execution trace.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Profiler
  22  */
  23
  24 /**
  25  * Execution trace
  26  * @todo document methods (?)
  27  * @ingroup Profiler
  28  */
  29 class ProfilerSimpleTrace extends ProfilerSimple {
  30         var $trace = "Beginning trace: \n";
  31         var $memory = 0;
  32
  33         function profileIn( $functionname ) {
  34                 parent::profileIn( $functionname );
  35                 $this->trace .= "         " . sprintf("%6.1f",$this->memoryDiff()) .
  36                                 str_repeat( " ", count($this->mWorkStack)) . " > " . $functionname . "\n";
  37         }
  38
  39         function profileOut($functionname) {
  40                 global $wgDebugFunctionEntry;
  41
  42                 if ( $wgDebugFunctionEntry ) {
  43                         $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
  44                 }
  45
  46                 list( $ofname, /* $ocount */ , $ortime ) = array_pop( $this->mWorkStack );
  47
  48                 if ( !$ofname ) {
  49                         $this->trace .= "Profiling error: $functionname\n";
  50                 } else {
  51                         if ( $functionname == 'close' ) {
  52                                 $message = "Profile section ended by close(): {$ofname}";
  53                                 $functionname = $ofname;
  54                                 $this->trace .= $message . "\n";
  55                         }
  56                         elseif ( $ofname != $functionname ) {
  57                                 $this->trace .= "Profiling error: in({$ofname}), out($functionname)";
  58                         }
  59                         $elapsedreal = $this->getTime() - $ortime;
  60                         $this->trace .= sprintf( "%03.6f %6.1f", $elapsedreal, $this->memoryDiff() ) .
  61                                         str_repeat(" ", count( $this->mWorkStack ) + 1 ) . " < " . $functionname . "\n";
  62                 }
  63         }
  64
  65         function memoryDiff() {
  66                 $diff = memory_get_usage() - $this->memory;
  67                 $this->memory = memory_get_usage();
  68                 return $diff / 1024;
  69         }
  70
  71         function logData() {
  72                 print "<!-- \n {$this->trace} \n -->";
  73         }
  74 }