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<?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/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/licence.txt BSD Licence
*/
namespace PHP_CodeSniffer\Util;
class Timing
{
/**
* Number of milliseconds in a minute.
*
* @var int
*/
const MINUTE_IN_MS = 60000;
/**
* Number of milliseconds in a second.
*
* @var int
*/
const SECOND_IN_MS = 1000;
/**
* The start time of the run in microseconds.
*
* @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()
/**
* Get the duration of the run up to "now".
*
* @return float Duration in milliseconds.
*/
public static function getDuration()
{
if (self::$startTime === null) {
// Timing was never started.
return 0;
}
return ((microtime(true) - self::$startTime) * 1000);
}//end getDuration()
/**
* Convert a duration in milliseconds to a human readable duration string.
*
* @param float $duration Duration in milliseconds.
*
* @return string
*/
public static function getHumanReadableDuration($duration)
{
$timeString = '';
if ($duration >= self::MINUTE_IN_MS) {
$mins = floor($duration / self::MINUTE_IN_MS);
$secs = round((fmod($duration, self::MINUTE_IN_MS) / self::SECOND_IN_MS), 2);
$timeString = $mins.' mins';
if ($secs >= 0.01) {
$timeString .= ", $secs secs";
}
} else if ($duration >= self::SECOND_IN_MS) {
$timeString = round(($duration / self::SECOND_IN_MS), 2).' secs';
} else {
$timeString = round($duration).'ms';
}
return $timeString;
}//end getHumanReadableDuration()
/**
* 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;
}
$duration = self::getDuration();
$duration = self::getHumanReadableDuration($duration);
$mem = round((memory_get_peak_usage(true) / (1024 * 1024)), 2).'MB';
echo "Time: $duration; Memory: $mem".PHP_EOL.PHP_EOL;
self::$printed = true;
}//end printRunTime()
}//end class