Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
0.00% |
0 / 92 |
|
0.00% |
0 / 9 |
CRAP | |
0.00% |
0 / 1 |
| ProfilerXhprof | |
0.00% |
0 / 92 |
|
0.00% |
0 / 9 |
1122 | |
0.00% |
0 / 1 |
| __construct | |
0.00% |
0 / 15 |
|
0.00% |
0 / 1 |
42 | |||
| getXhprofData | |
0.00% |
0 / 8 |
|
0.00% |
0 / 1 |
20 | |||
| scopedProfileIn | |
0.00% |
0 / 2 |
|
0.00% |
0 / 1 |
2 | |||
| close | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
| shouldExclude | |
0.00% |
0 / 12 |
|
0.00% |
0 / 1 |
72 | |||
| getFunctionStats | |
0.00% |
0 / 29 |
|
0.00% |
0 / 1 |
90 | |||
| getOutput | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
| getFunctionReport | |
0.00% |
0 / 23 |
|
0.00% |
0 / 1 |
6 | |||
| getRawData | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
| 1 | <?php |
| 2 | /** |
| 3 | * Copyright 2014 Wikimedia Foundation and contributors |
| 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 | */ |
| 22 | |
| 23 | /** |
| 24 | * Profiler that captures all function calls from the XHProf PHP extension. |
| 25 | * |
| 26 | * This extension can be installed via PECL or your operating system's package manager. |
| 27 | * This also supports the Tideways-XHProf PHP extension. |
| 28 | * |
| 29 | * @ingroup Profiler |
| 30 | * @see $wgProfiler |
| 31 | * @see https://php.net/xhprof |
| 32 | * @see https://github.com/tideways/php-xhprof-extension |
| 33 | */ |
| 34 | class ProfilerXhprof extends Profiler { |
| 35 | /** |
| 36 | * @var XhprofData|null |
| 37 | */ |
| 38 | protected $xhprofData; |
| 39 | |
| 40 | /** |
| 41 | * Profiler for explicit, arbitrary, frame labels |
| 42 | * @var SectionProfiler |
| 43 | */ |
| 44 | protected $sprofiler; |
| 45 | |
| 46 | /** |
| 47 | * @see $wgProfiler |
| 48 | * @param array $params Associative array of parameters: |
| 49 | * - int flags: Bitmask of constants from the XHProf or Tideways-XHProf extension |
| 50 | * that will be passed to its enable function, |
| 51 | * such as `XHPROF_FLAGS_CPU | XHPROF_FLAGS_MEMORY | XHPROF_FLAGS_NO_BUILTINS`. |
| 52 | * With Tideways-XHProf, use `TIDEWAYS_XHPROF_FLAGS_*` instead. |
| 53 | * - bool running: If true, it is assumed that the enable function was already |
| 54 | * called. The `flags` option is ignored in this case. |
| 55 | * This exists for use with a custom web entrypoint from which the profiler |
| 56 | * is started before MediaWiki is included. |
| 57 | * - array include: If set, only function names matching a pattern in this |
| 58 | * array will be reported. The pattern strings will be matched using |
| 59 | * the PHP fnmatch() function. |
| 60 | * - array exclude: If set, function names matching an exact name in this |
| 61 | * will be skipped over by XHProf. Ignored functions become transparent |
| 62 | * in the profile. For example, `foo=>ignored=>bar` becomes `foo=>bar`. |
| 63 | * This option is backed by XHProf's `ignored_functions` option. |
| 64 | * |
| 65 | * **Note:** The `exclude` option is not supported in Tideways-XHProf. |
| 66 | */ |
| 67 | public function __construct( array $params = [] ) { |
| 68 | parent::__construct( $params ); |
| 69 | |
| 70 | // See T180183 and T247332 for why we need the 'running' option. |
| 71 | if ( empty( $params['running'] ) ) { |
| 72 | $flags = $params['flags'] ?? 0; |
| 73 | if ( function_exists( 'xhprof_enable' ) ) { |
| 74 | $options = isset( $params['exclude'] ) |
| 75 | ? [ 'ignored_functions' => $params['exclude'] ] |
| 76 | : []; |
| 77 | xhprof_enable( $flags, $options ); |
| 78 | } elseif ( function_exists( 'tideways_xhprof_enable' ) ) { |
| 79 | if ( isset( $params['exclude'] ) ) { |
| 80 | throw new RuntimeException( 'The exclude option is not supported in tideways_xhprof' ); |
| 81 | } |
| 82 | tideways_xhprof_enable( $flags ); |
| 83 | } else { |
| 84 | throw new RuntimeException( 'Neither xhprof nor tideways_xhprof is installed' ); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | $this->sprofiler = new SectionProfiler(); |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * @return XhprofData |
| 93 | */ |
| 94 | public function getXhprofData() { |
| 95 | if ( !$this->xhprofData ) { |
| 96 | if ( function_exists( 'xhprof_disable' ) ) { |
| 97 | $data = xhprof_disable(); |
| 98 | } elseif ( function_exists( 'tideways_xhprof_disable' ) ) { |
| 99 | $data = tideways_xhprof_disable(); |
| 100 | } else { |
| 101 | throw new RuntimeException( 'Neither xhprof nor tideways_xhprof is installed' ); |
| 102 | } |
| 103 | $this->xhprofData = new XhprofData( $data, $this->params ); |
| 104 | } |
| 105 | return $this->xhprofData; |
| 106 | } |
| 107 | |
| 108 | public function scopedProfileIn( $section ) { |
| 109 | $key = 'section.' . ltrim( $section, '.' ); |
| 110 | return $this->sprofiler->scopedProfileIn( $key ); |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * No-op for xhprof profiling. |
| 115 | */ |
| 116 | public function close() { |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Check if a function or section should be excluded from the output. |
| 121 | * |
| 122 | * @param string $name Function or section name. |
| 123 | * @return bool |
| 124 | */ |
| 125 | private function shouldExclude( $name ) { |
| 126 | if ( $name === '-total' ) { |
| 127 | return true; |
| 128 | } |
| 129 | if ( !empty( $this->params['include'] ) ) { |
| 130 | foreach ( $this->params['include'] as $pattern ) { |
| 131 | if ( fnmatch( $pattern, $name, FNM_NOESCAPE ) ) { |
| 132 | return false; |
| 133 | } |
| 134 | } |
| 135 | return true; |
| 136 | } |
| 137 | if ( !empty( $this->params['exclude'] ) ) { |
| 138 | foreach ( $this->params['exclude'] as $pattern ) { |
| 139 | if ( fnmatch( $pattern, $name, FNM_NOESCAPE ) ) { |
| 140 | return true; |
| 141 | } |
| 142 | } |
| 143 | } |
| 144 | return false; |
| 145 | } |
| 146 | |
| 147 | public function getFunctionStats() { |
| 148 | $metrics = $this->getXhprofData()->getCompleteMetrics(); |
| 149 | $profile = []; |
| 150 | |
| 151 | $main = null; // units in ms |
| 152 | foreach ( $metrics as $fname => $stats ) { |
| 153 | if ( $this->shouldExclude( $fname ) ) { |
| 154 | continue; |
| 155 | } |
| 156 | // Convert elapsed times from μs to ms to match interface |
| 157 | $entry = [ |
| 158 | 'name' => $fname, |
| 159 | 'calls' => $stats['ct'], |
| 160 | 'real' => $stats['wt']['total'] / 1000, |
| 161 | '%real' => $stats['wt']['percent'], |
| 162 | 'cpu' => ( $stats['cpu']['total'] ?? 0 ) / 1000, |
| 163 | '%cpu' => $stats['cpu']['percent'] ?? 0, |
| 164 | 'memory' => $stats['mu']['total'] ?? 0, |
| 165 | '%memory' => $stats['mu']['percent'] ?? 0, |
| 166 | 'min_real' => $stats['wt']['min'] / 1000, |
| 167 | 'max_real' => $stats['wt']['max'] / 1000 |
| 168 | ]; |
| 169 | $profile[] = $entry; |
| 170 | if ( $fname === 'main()' ) { |
| 171 | $main = $entry; |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | // Merge in all of the custom profile sections |
| 176 | foreach ( $this->sprofiler->getFunctionStats() as $stats ) { |
| 177 | if ( $this->shouldExclude( $stats['name'] ) ) { |
| 178 | continue; |
| 179 | } |
| 180 | |
| 181 | // @note: getFunctionStats() values already in ms |
| 182 | $stats['%real'] = $main['real'] ? $stats['real'] / $main['real'] * 100 : 0; |
| 183 | $stats['%cpu'] = $main['cpu'] ? $stats['cpu'] / $main['cpu'] * 100 : 0; |
| 184 | $stats['%memory'] = $main['memory'] ? $stats['memory'] / $main['memory'] * 100 : 0; |
| 185 | $profile[] = $stats; // assume no section names collide with $metrics |
| 186 | } |
| 187 | |
| 188 | return $profile; |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * Returns a profiling output to be stored in debug file |
| 193 | * |
| 194 | * @return string |
| 195 | */ |
| 196 | public function getOutput() { |
| 197 | return $this->getFunctionReport(); |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * Get a report of profiled functions sorted by inclusive wall clock time |
| 202 | * in descending order. |
| 203 | * |
| 204 | * Each line of the report includes this data: |
| 205 | * - Function name |
| 206 | * - Number of times function was called |
| 207 | * - Total wall clock time spent in function in microseconds |
| 208 | * - Minimum wall clock time spent in function in microseconds |
| 209 | * - Average wall clock time spent in function in microseconds |
| 210 | * - Maximum wall clock time spent in function in microseconds |
| 211 | * - Percentage of total wall clock time spent in function |
| 212 | * - Total delta of memory usage from start to end of function in bytes |
| 213 | * |
| 214 | * @return string |
| 215 | */ |
| 216 | protected function getFunctionReport() { |
| 217 | $data = $this->getFunctionStats(); |
| 218 | usort( $data, static function ( $a, $b ) { |
| 219 | return $b['real'] <=> $a['real']; // descending |
| 220 | } ); |
| 221 | |
| 222 | $width = 140; |
| 223 | $nameWidth = $width - 65; |
| 224 | $format = "%-{$nameWidth}s %6d %9d %9d %9d %9d %7.3f%% %9d"; |
| 225 | $out = []; |
| 226 | $out[] = sprintf( "%-{$nameWidth}s %6s %9s %9s %9s %9s %7s %9s", |
| 227 | 'Name', 'Calls', 'Total', 'Min', 'Each', 'Max', '%', 'Mem' |
| 228 | ); |
| 229 | foreach ( $data as $stats ) { |
| 230 | $out[] = sprintf( $format, |
| 231 | $stats['name'], |
| 232 | $stats['calls'], |
| 233 | $stats['real'] * 1000, |
| 234 | $stats['min_real'] * 1000, |
| 235 | $stats['real'] / $stats['calls'] * 1000, |
| 236 | $stats['max_real'] * 1000, |
| 237 | $stats['%real'], |
| 238 | $stats['memory'] |
| 239 | ); |
| 240 | } |
| 241 | return implode( "\n", $out ); |
| 242 | } |
| 243 | |
| 244 | /** |
| 245 | * Retrieve raw data from xhprof |
| 246 | * @return array |
| 247 | */ |
| 248 | public function getRawData() { |
| 249 | return $this->getXhprofData()->getRawData(); |
| 250 | } |
| 251 | } |