| 1 | <?php |
| 2 | /*************************************************************************** |
| 3 | * Copyright (C) 2003-2007 Polytechnique.org * |
| 4 | * http://opensource.polytechnique.org/ * |
| 5 | * * |
| 6 | * This program is free software; you can redistribute it and/or modify * |
| 7 | * it under the terms of the GNU General Public License as published by * |
| 8 | * the Free Software Foundation; either version 2 of the License, or * |
| 9 | * (at your option) any later version. * |
| 10 | * * |
| 11 | * This program is distributed in the hope that it will be useful, * |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 14 | * GNU General Public License for more details. * |
| 15 | * * |
| 16 | * You should have received a copy of the GNU General Public License * |
| 17 | * along with this program; if not, write to the Free Software * |
| 18 | * Foundation, Inc., * |
| 19 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * |
| 20 | ***************************************************************************/ |
| 21 | |
| 22 | /** Ligth debugging tool to generate execution backtrace |
| 23 | */ |
| 24 | class PlBacktrace |
| 25 | { |
| 26 | static public $bt = array(); |
| 27 | |
| 28 | public $traces = array(); |
| 29 | public $totaltime = 0.0; |
| 30 | public $error = false; |
| 31 | |
| 32 | function __construct($name, array $init = array(), $sizef = 'rows', $timef = 'exectime', $errorf = 'error') |
| 33 | { |
| 34 | PlBacktrace::$bt[$name] = $this; |
| 35 | foreach ($init as &$entry) { |
| 36 | $this->add($entry, $sizef, $timef, $errorf); |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | private function fixCharset($action) |
| 41 | { |
| 42 | return is_utf8($action) ? $action : utf8_encode($action); |
| 43 | } |
| 44 | |
| 45 | private function add(array &$entry, $sizef = 'rows', $timef = 'exectime', $errorf = 'error') |
| 46 | { |
| 47 | $trace = array(); |
| 48 | $trace['action'] = $this->fixCharset($entry['action']); |
| 49 | unset($entry['action']); |
| 50 | $trace['exectime'] = @$entry[$timef]; |
| 51 | $this->totaltime += $trace['exectime']; |
| 52 | unset($entry[$timef]); |
| 53 | $trace['rows'] = @$entry[$sizef]; |
| 54 | unset($entry[$sizef]); |
| 55 | $trace['error'] = @$entry[$errorf]; |
| 56 | unset($entry[$errorf]); |
| 57 | if ($trace['error']) { |
| 58 | $this->error = true; |
| 59 | } |
| 60 | $trace['data'] = array($entry); |
| 61 | $this->traces[] =& $trace; |
| 62 | } |
| 63 | |
| 64 | public function newEvent($action, $rows = 0, $error = null, array $userdata = array()) |
| 65 | { |
| 66 | $trace = array('action' => $this->fixCharset($action), 'time' => 0); |
| 67 | $this->traces[] =& $trace; |
| 68 | $this->update($rows, $error, $userdata); |
| 69 | } |
| 70 | |
| 71 | public function start($action) |
| 72 | { |
| 73 | $this->traces[] = array('action' => $this->fixCharset($action), 'starttime' => microtime(true));; |
| 74 | } |
| 75 | |
| 76 | public function stop($rows = 0, $error = null, array $userdata = array()) |
| 77 | { |
| 78 | $time = microtime(true); |
| 79 | if (!$this->traces) { |
| 80 | return; |
| 81 | } |
| 82 | $trace =& $this->traces[count($this->traces) - 1]; |
| 83 | $trace['exectime'] = $time - $trace['starttime']; |
| 84 | unset($trace['starttime']); |
| 85 | $this->totaltime += $trace['exectime']; |
| 86 | $this->update($rows, $error, $userdata); |
| 87 | } |
| 88 | |
| 89 | public function update($rows = 0, $error = null, array $userdata = array()) |
| 90 | { |
| 91 | $trace =& $this->traces[count($this->traces) - 1]; |
| 92 | $trace['rows'] = $rows; |
| 93 | $trace['error'] = $error; |
| 94 | $trace['data'] = $userdata; |
| 95 | if ($trace['error']) { |
| 96 | $this->error = true; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | public static function clean() |
| 101 | { |
| 102 | foreach (PlBacktrace::$bt as $name=>&$entry) { |
| 103 | if (!$entry->traces) { |
| 104 | unset(PlBacktrace::$bt[$name]); |
| 105 | } |
| 106 | } |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: |
| 111 | ?> |