<?php
/**
 * Timing functions for the run.
 *
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 */

namespace PHP_CodeSniffer\Util;

class Timing {

	/**
	 * The start time of the run.
	 *
	 * @var float
	 */
	private static $startTime;

	/**
	 * Used to make sure we only print the run time once per run.
	 *
	 * @var boolean
	 */
	private static $printed = false;


	/**
	 * Start recording time for the run.
	 *
	 * @return void
	 */
	public static function startTiming() {

		self::$startTime = microtime( true );

	}//end startTiming()


	/**
	 * Print information about the run.
	 *
	 * @param boolean $force If TRUE, prints the output even if it has
	 *                       already been printed during the run.
	 *
	 * @return void
	 */
	public static function printRunTime( $force = false ) {
		if ( $force === false && self::$printed === true ) {
			// A double call.
			return;
		}

		if ( self::$startTime === null ) {
			// Timing was never started.
			return;
		}

		$time = ( ( microtime( true ) - self::$startTime ) * 1000 );

		if ( $time > 60000 ) {
			$mins = floor( $time / 60000 );
			$secs = round( ( ( $time % 60000 ) / 1000 ), 2 );
			$time = $mins . ' mins';
			if ( $secs !== 0 ) {
				$time .= ", $secs secs";
			}
		} else if ( $time > 1000 ) {
			$time = round( ( $time / 1000 ), 2 ) . ' secs';
		} else {
			$time = round( $time ) . 'ms';
		}

		$mem = round( ( memory_get_peak_usage( true ) / ( 1024 * 1024 ) ), 2 ) . 'MB';
		echo "Time: $time; Memory: $mem" . PHP_EOL . PHP_EOL;

		self::$printed = true;

	}//end printRunTime()


}//end class