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 profiler
  26  * @todo document methods (?)
  27  * @ingroup Profiler
  28  */
  29 class ProfilerSimpleTrace extends Profiler {
  30         protected $trace = "Beginning trace: \n";
  31         protected $memory = 0;
  32
  33         protected function collateOnly() {
  34                 return true;
  35         }
  36
  37         public function profileIn( $functionname ) {
  38                 parent::profileIn( $functionname );
  39
  40                 $this->trace .= "         " . sprintf( "%6.1f", $this->memoryDiff() ) .
  41                         str_repeat( " ", count( $this->mWorkStack ) ) . " > " . $functionname . "\n";
  42         }
  43
  44         public function profileOut( $functionname ) {
  45                 $item = end( $this->mWorkStack );
  46
  47                 parent::profileOut( $functionname );
  48
  49                 if ( !$item ) {
  50                         $this->trace .= "Profiling error: $functionname\n";
  51                 } else {
  52                         list( $ofname, /* $ocount */, $ortime ) = $item;
  53                         if ( $functionname == 'close' ) {
  54                                 $message = "Profile section ended by close(): {$ofname}";
  55                                 $functionname = $ofname;
  56                                 $this->trace .= $message . "\n";
  57                         } elseif ( $ofname != $functionname ) {
  58                                 $this->trace .= "Profiling error: in({$ofname}), out($functionname)";
  59                         }
  60                         $elapsedreal = $this->getTime() - $ortime;
  61                         $this->trace .= sprintf( "%03.6f %6.1f", $elapsedreal, $this->memoryDiff() ) .
  62                                 str_repeat( " ", count( $this->mWorkStack ) + 1 ) . " < " . $functionname . "\n";
  63                 }
  64         }
  65
  66         protected function memoryDiff() {
  67                 $diff = memory_get_usage() - $this->memory;
  68                 $this->memory = memory_get_usage();
  69                 return $diff / 1024;
  70         }
  71
  72         public function logData() {
  73                 if ( $this->mTemplated ) {
  74                         if ( PHP_SAPI === 'cli' ) {
  75                                 print "<!-- \n {$this->trace} \n -->";
  76                         } elseif ( $this->getContentType() === 'text/html' ) {
  77                                 print "<!-- \n {$this->trace} \n -->";
  78                         } elseif ( $this->getContentType() === 'text/javascript' ) {
  79                                 print "\n/*\n {$this->trace}\n*/";
  80                         } elseif ( $this->getContentType() === 'text/css' ) {
  81                                 print "\n/*\n {$this->trace}\n*/";
  82                         }
  83                 }
  84         }
  85 }