Timer.php

1. 8.x drupal/core/lib/Drupal/Component/Utility/Timer.php
2. 8.x drupal/core/vendor/phpunit/php-timer/PHP/Timer.php

<?php

/**
 * PHP_Timer
 *
 * Copyright (c) 2010-2012, Sebastian Bergmann <sb@sebastian-bergmann.de>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *
 *   * Neither the name of Sebastian Bergmann nor the names of his
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @package    PHP
 * @subpackage Timer
 * @author     Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @copyright  2010-2012 Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
 * @link       http://github.com/sebastianbergmann/php-timer
 * @since      File available since Release 1.0.0
 */

/**
 * Utility class for timing.
 *
 * @package    PHP
 * @subpackage Timer
 * @author     Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @copyright  2010-2012 Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
 * @version    Release: @package_version@
 * @link       http://github.com/sebastianbergmann/php-timer
 * @since      Class available since Release 1.0.0
 */
class PHP_Timer {

  /**
   * @var array
   */
  protected static $startTimes = array();

  /**
   * @var float
   */
  public static $requestTime;

  /**
   * Starts the timer.
   */
  public static function start() {
    array_push(self::$startTimes, microtime(TRUE));
  }

  /**
   * Stops the timer and returns the elapsed time.
   *
   * @return float
   */
  public static function stop() {
    return microtime(TRUE) - array_pop(self::$startTimes);
  }

  /**
   * Formats the elapsed time as a string.
   *
   * @param  float $time
   * @return string
   */
  public static function secondsToTimeString($time) {
    $buffer = '';
    $hours = sprintf('%02d', $time >= 3600 ? floor($time / 3600) : 0);
    $minutes = sprintf('%02d', $time >= 60 ? floor($time / 60) - 60 * $hours : 0);
    $seconds = sprintf('%02d', $time - 60 * 60 * $hours - 60 * $minutes);
    if ($hours == 0 && $minutes == 0) {
      $seconds = sprintf('%1d', $seconds);
      $buffer .= $seconds . ' second';
      if ($seconds != '1') {
        $buffer .= 's';
      }
    }
    else {
      if ($hours > 0) {
        $buffer = $hours . ':';
      }
      $buffer .= $minutes . ':' . $seconds;
    }
    return $buffer;
  }

  /**
   * Formats the elapsed time since the start of the request as a string.
   *
   * @return string
   */
  public static function timeSinceStartOfRequest() {
    return self::secondsToTimeString(time() - self::$requestTime);
  }

  /**
   * Returns the resources (time, memory) of the request as a string.
   *
   * @return string
   */
  public static function resourceUsage() {
    return sprintf('Time: %s, Memory: %4.2fMb', self::timeSinceStartOfRequest(), memory_get_peak_usage(TRUE) / 1048576);
  }

}
if (isset($_SERVER['REQUEST_TIME_FLOAT'])) {
  PHP_Timer::$requestTime = $_SERVER['REQUEST_TIME_FLOAT'];
}
else {
  if (isset($_SERVER['REQUEST_TIME'])) {
    PHP_Timer::$requestTime = $_SERVER['REQUEST_TIME'];
  }
  else {
    PHP_Timer::$requestTime = time();
  }
}