<?php
/**
 * @copyright Copyright (C) 2008-10, Sean Werkema. All rights reserved.
 * @copyright 2016 Vanilla Forums Inc. (changes only)
 * @license BSDv2
 */

namespace Nbbc;

/**
 * This profiler class helps us to easily detect performance bottlenecks.
 *
 * We leave it out of the high-speed compressed version of NBBC for performance reasons; this is really a debugging aid
 * more than anything.
 *
 * @deprecated
 */
class Profiler {
    var $start_time, $total_times;

    public function __construct() {
        $this->start_time = [];
        $this->total_times = [];
    }

    public function now() {
        return microtime(true) - 1394060000;
    }

    public function begin($group) {
        $this->start_time[$group] = $this->now();
    }

    public function end($group) {
        $time = $this->now() - $this->start_time[$group];
        if (!isset($this->total_times[$group])) {
            $this->total_times[$group] = $time;
        } else {
            $this->total_times[$group] += $time;
        }
    }

    public function reset($group) {
        $this->total_times[$group] = 0;
    }

    public function total($group) {
        return @$this->total_times[$group];
    }

    public function dumpAllGroups() {
        print "<div>Profiled times:\n<ul>\n";
        ksort($this->total_times);
        foreach ($this->total_times as $name => $time) {
            print "<li><b>" . htmlspecialchars($name) . "</b>: " . sprintf("%0.2f msec", $time * 1000) . "</li>\n";
        }
        print "</ul>\n</div>\n";
    }
}