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<?php
/**
* @defgroup Benchmark Benchmark
* @ingroup Maintenance
*/
/**
* Base code for benchmark scripts.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @todo Report PHP version, OS ..
* @file
* @ingroup Benchmark
*/
require_once( __DIR__ . '/../Maintenance.php' );
/**
* Base class for benchmark scripts.
*
* @ingroup Benchmark
*/
abstract class Benchmarker extends Maintenance {
private $results;
public function __construct() {
parent::__construct();
$this->addOption( 'count', "How many time to run a benchmark", false, true );
}
public function bench( array $benchs ) {
$bench_number = 0;
$count = $this->getOption( 'count', 100 );
foreach( $benchs as $bench ) {
// handle empty args
if(!array_key_exists( 'args', $bench )) {
$bench['args'] = array();
}
$bench_number++;
$start = microtime( true );
for( $i=0; $i<$count; $i++ ) {
call_user_func_array( $bench['function'], $bench['args'] );
}
$delta = microtime( true ) - $start;
// function passed as a callback
if( is_array( $bench['function'] ) ) {
$ret = get_class( $bench['function'][0] ). '->' . $bench['function'][1];
$bench['function'] = $ret;
}
$this->results[$bench_number] = array(
'function' => $bench['function'],
'arguments' => $bench['args'],
'count' => $count,
'delta' => $delta,
'average' => $delta / $count,
);
}
}
public function getFormattedResults() {
$ret = '';
foreach( $this->results as $res ) {
// show function with args
$ret .= sprintf( "%s times: function %s(%s) :\n",
$res['count'],
$res['function'],
join( ', ', $res['arguments'] )
);
$ret .= sprintf( " %6.2fms (%6.2fms each)\n",
$res['delta'] * 1000,
$res['average'] * 1000
);
}
return $ret;
}
}
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