Viewing file:  LscpuPhysicalFinder.php (1.35 KB) -rw-r--r--
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<?php
/*
* This file is part of the Fidry CPUCounter Config package.
*
* (c) Théo FIDRY <theo.fidry@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace Fidry\CpuCoreCounter\Finder;
use function count;
use function explode;
use function is_array;
use function preg_grep;
use function strtok;
use const PHP_EOL;
/**
* The number of physical processors.
*
* @see https://stackoverflow.com/a/23378780/5846754
*/
final class LscpuPhysicalFinder extends ProcOpenBasedFinder
{
public function toString(): string
{
return 'LscpuPhysicalFinder';
}
public function getCommand(): string
{
return 'lscpu -p';
}
protected function countCpuCores(string $process): ?int
{
$lines = explode(PHP_EOL, $process);
$actualLines = preg_grep('/^\d+/', $lines);
if (!is_array($actualLines)) {
return null;
}
$cores = [];
foreach ($actualLines as $line) {
strtok($line, ',');
$core = strtok(',');
if (false === $core) {
continue;
}
$cores[$core] = true;
}
unset($cores['-']);
$count = count($cores);
return 0 === $count ? null : $count;
}
}
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