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1 | <?php |
2 | /*************************************************************************** |
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3 | * Copyright (C) 2003-2010 Polytechnique.org * |
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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, $errorf); |
37 | } |
38 | } |
39 | |
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40 | private function fixCharset($action) |
41 | { |
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42 | if (!is_string($action)) { |
43 | return $action; |
44 | } else { |
45 | return is_utf8($action) ? $action : utf8_encode($action); |
46 | } |
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47 | } |
48 | |
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49 | private function add(array &$entry, $sizef = 'rows', $timef = 'exectime', $errorf = 'error') |
50 | { |
51 | $trace = array(); |
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52 | $trace['action'] = $this->fixCharset($entry['action']); |
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53 | unset($entry['action']); |
54 | $trace['exectime'] = @$entry[$timef]; |
55 | $this->totaltime += $trace['exectime']; |
56 | unset($entry[$timef]); |
57 | $trace['rows'] = @$entry[$sizef]; |
58 | unset($entry[$sizef]); |
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59 | $trace['error'] = $this->fixCharset(@$entry[$errorf]); |
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60 | unset($entry[$errorf]); |
61 | if ($trace['error']) { |
62 | $this->error = true; |
63 | } |
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64 | $trace['data'] = array($this->fixCharset($entry)); |
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65 | $this->traces[] =& $trace; |
66 | } |
67 | |
68 | public function newEvent($action, $rows = 0, $error = null, array $userdata = array()) |
69 | { |
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70 | $trace = array('action' => $this->fixCharset($action), 'time' => 0); |
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71 | $this->traces[] =& $trace; |
72 | $this->update($rows, $error, $userdata); |
73 | } |
74 | |
75 | public function start($action) |
76 | { |
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77 | $this->traces[] = array('action' => $this->fixCharset($action), 'starttime' => microtime(true));; |
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78 | } |
79 | |
80 | public function stop($rows = 0, $error = null, array $userdata = array()) |
81 | { |
82 | $time = microtime(true); |
83 | if (!$this->traces) { |
84 | return; |
85 | } |
86 | $trace =& $this->traces[count($this->traces) - 1]; |
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87 | $trace['exectime'] = $time - $trace['starttime']; |
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88 | unset($trace['starttime']); |
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89 | $this->totaltime += $trace['exectime']; |
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90 | $this->update($rows, $error, $userdata); |
91 | } |
92 | |
93 | public function update($rows = 0, $error = null, array $userdata = array()) |
94 | { |
95 | $trace =& $this->traces[count($this->traces) - 1]; |
96 | $trace['rows'] = $rows; |
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97 | $trace['error'] = $this->fixCharset($error); |
98 | array_walk_recursive($userdata, array($this, 'fixCharset')); |
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99 | $trace['data'] = $userdata; |
100 | if ($trace['error']) { |
101 | $this->error = true; |
102 | } |
103 | } |
104 | |
105 | public static function clean() |
106 | { |
107 | foreach (PlBacktrace::$bt as $name=>&$entry) { |
108 | if (!$entry->traces) { |
109 | unset(PlBacktrace::$bt[$name]); |
110 | } |
111 | } |
112 | } |
113 | } |
114 | |
115 | // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: |
116 | ?> |