backend/src/Service/Performance/PerformanceTrackerService.php

<?php

namespace App\Service\Performance;

class PerformanceTrackerService
{
    private ?float $startTime = null;
    private ?float $endTime = null;

    public function start(): void
    {
        $this->startTime = microtime(true);
        $this->endTime = null;
    }

    public function stop(): void
    {
        $this->endTime = microtime(true);
    }

    public function getDurationMs(): int
    {
        if (!$this->startTime) {
            return 0;
        }
        
        $endTime = $this->endTime ?? microtime(true);
        return (int)round(($endTime - $this->startTime) * 1000);
    }

    public function reset(): void
    {
        $this->startTime = null;
        $this->endTime = null;
    }
}