b191e5e860
`$a <=> $b` returns `-1` if `$a` is lesser, `1` if `$b` is lesser, and `0` if they are equal, which are exactly the values 'sort()' callbacks are supposed to return. It also enables the neat idiom `$a[x] <=> $b[x] ?: $a[y] <=> $b[y]` to sort arrays of objects first by 'x', and by 'y' if they are equal. * Replace a common pattern like `return $a < $b ? -1 : 1` with the new operator (and similar patterns with the variables, the numbers or the comparison inverted). Some of the uses were previously not correctly handling the variables being equal; this is now automatically fixed. * Also replace `return $a - $b`, which is equivalent to `return $a <=> $b` if both variables are integers but less intuitive. * (Do not replace `return strcmp( $a, $b )`. It is also equivalent when both variables are strings, but if any of the variables is not, 'strcmp()' converts it to a string before comparison, which could give different results than '<=>', so changing this would require careful review and isn't worth it.) * Also replace `return $a > $b`, which presumably sort of works most of the time (returns `1` if `$b` is lesser, and `0` if they are equal or `$a` is lesser) but is erroneous. Change-Id: I19a3d2fc8fcdb208c10330bd7a42c4e05d7f5cf3
100 lines
2.9 KiB
PHP
100 lines
2.9 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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/**
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* Profiler that only tracks explicit profiling sections
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*
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* @code
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* $wgProfiler['class'] = ProfilerSectionOnly::class;
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* $wgProfiler['output'] = 'text';
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* $wgProfiler['visible'] = true;
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* @endcode
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*
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* @ingroup Profiler
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* @since 1.25
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*/
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class ProfilerSectionOnly extends Profiler {
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/** @var SectionProfiler */
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protected $sprofiler;
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public function __construct( array $params = [] ) {
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parent::__construct( $params );
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$this->sprofiler = new SectionProfiler();
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}
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public function scopedProfileIn( $section ) {
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return $this->sprofiler->scopedProfileIn( $section );
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}
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public function close() {
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}
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public function getFunctionStats() {
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return $this->sprofiler->getFunctionStats();
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}
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public function getOutput() {
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return $this->getFunctionReport();
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}
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/**
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* Get a report of profiled functions sorted by inclusive wall clock time
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* in descending order.
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*
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* Each line of the report includes this data:
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* - Function name
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* - Number of times function was called
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* - Total wall clock time spent in function in microseconds
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* - Minimum wall clock time spent in function in microseconds
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* - Average wall clock time spent in function in microseconds
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* - Maximum wall clock time spent in function in microseconds
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* - Percentage of total wall clock time spent in function
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* - Total delta of memory usage from start to end of function in bytes
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*
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* @return string
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*/
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protected function getFunctionReport() {
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$data = $this->getFunctionStats();
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usort( $data, function ( $a, $b ) {
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return $b['real'] <=> $a['real']; // descending
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} );
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$width = 140;
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$nameWidth = $width - 65;
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$format = "%-{$nameWidth}s %6d %9d %9d %9d %9d %7.3f%% %9d";
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$out = [];
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$out[] = sprintf( "%-{$nameWidth}s %6s %9s %9s %9s %9s %7s %9s",
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'Name', 'Calls', 'Total', 'Min', 'Each', 'Max', '%', 'Mem'
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);
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foreach ( $data as $stats ) {
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$out[] = sprintf( $format,
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$stats['name'],
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$stats['calls'],
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$stats['real'] * 1000,
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$stats['min_real'] * 1000,
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$stats['real'] / $stats['calls'] * 1000,
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$stats['max_real'] * 1000,
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$stats['%real'],
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$stats['memory']
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);
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}
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return implode( "\n", $out );
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}
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}
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