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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\Framework\Profiler\Driver\Standard;
use Magento\Framework\Profiler;
/**
* Storage for timers statistics
*
* @api
*/
class Stat
{
/**
* #@+ Timer statistics data keys
*/
public const ID = 'id';
public const START = 'start';
public const TIME = 'sum';
public const COUNT = 'count';
public const AVG = 'avg';
public const REALMEM = 'realmem';
public const REALMEM_START = 'realmem_start';
public const EMALLOC = 'emalloc';
public const EMALLOC_START = 'emalloc_start';
/**#@-*/
/**
* @var array
*/
protected $_timers = [];
/**
* Starts timer
*
* @param string $timerId
* @param int $time
* @param int $realMemory Real size of memory allocated from system
* @param int $emallocMemory Memory used by emalloc()
* @return void
*/
public function start($timerId, $time, $realMemory, $emallocMemory)
{
if (empty($this->_timers[$timerId])) {
$this->_timers[$timerId] = [
self::START => false,
self::TIME => 0,
self::COUNT => 0,
self::REALMEM => 0,
self::EMALLOC => 0,
];
}
$this->_timers[$timerId][self::REALMEM_START] = $realMemory;
$this->_timers[$timerId][self::EMALLOC_START] = $emallocMemory;
$this->_timers[$timerId][self::START] = $time;
$this->_timers[$timerId][self::COUNT]++;
}
/**
* Stops timer
*
* @param string $timerId
* @param int $time
* @param int $realMemory Real size of memory allocated from system
* @param int $emallocMemory Memory used by emalloc()
* @return void
* @throws \InvalidArgumentException if timer doesn't exist
*/
public function stop($timerId, $time, $realMemory, $emallocMemory)
{
if (empty($this->_timers[$timerId])) {
throw new \InvalidArgumentException(sprintf('Timer "%s" doesn\'t exist.', $timerId));
}
$this->_timers[$timerId][self::TIME] += $time - $this->_timers[$timerId]['start'];
$this->_timers[$timerId][self::START] = false;
$this->_timers[$timerId][self::REALMEM] += $realMemory;
$this->_timers[$timerId][self::REALMEM] -= $this->_timers[$timerId][self::REALMEM_START];
$this->_timers[$timerId][self::EMALLOC] += $emallocMemory;
$this->_timers[$timerId][self::EMALLOC] -= $this->_timers[$timerId][self::EMALLOC_START];
}
/**
* Get timer statistics data by timer id
*
* @param string $timerId
* @return array
* @throws \InvalidArgumentException if timer doesn't exist
*/
public function get($timerId)
{
if (empty($this->_timers[$timerId])) {
throw new \InvalidArgumentException(sprintf('Timer "%s" doesn\'t exist.', $timerId));
}
return $this->_timers[$timerId];
}
/**
* Retrieve statistics on specified timer
*
* @param string $timerId
* @param string $key Information to return
* @return string|bool|int|float
* @throws \InvalidArgumentException
*/
public function fetch($timerId, $key)
{
if ($key === self::ID) {
return $timerId;
}
if (empty($this->_timers[$timerId])) {
throw new \InvalidArgumentException(sprintf('Timer "%s" doesn\'t exist.', $timerId));
}
/* AVG = TIME / COUNT */
$isAvg = $key == self::AVG;
if ($isAvg) {
$key = self::TIME;
}
if (!isset($this->_timers[$timerId][$key])) {
throw new \InvalidArgumentException(sprintf('Timer "%s" doesn\'t have value for "%s".', $timerId, $key));
}
$result = $this->_timers[$timerId][$key];
if ($key == self::TIME && $this->_timers[$timerId][self::START] !== false) {
$result += microtime(true) - $this->_timers[$timerId][self::START];
}
if ($isAvg) {
$count = $this->_timers[$timerId][self::COUNT];
if ($count) {
$result = $result / $count;
}
}
return $result;
}
/**
* Clear collected statistics for specified timer or for all timers if timer id is omitted
*
* @param string|null $timerId
* @return void
*/
public function clear($timerId = null)
{
if ($timerId) {
unset($this->_timers[$timerId]);
} else {
$this->_timers = [];
}
}
/**
* Get ordered list of timer ids filtered by thresholds and pcre pattern
*
* @param array|null $thresholds
* @param string|null $filterPattern
* @return array
*/
public function getFilteredTimerIds(array $thresholds = null, $filterPattern = null)
{
$timerIds = $this->_getOrderedTimerIds();
if (!$thresholds && !$filterPattern) {
return $timerIds;
}
$thresholds = (array)$thresholds;
$result = [];
foreach ($timerIds as $timerId) {
/* Filter by pattern */
if ($filterPattern && !preg_match($filterPattern, $timerId)) {
continue;
}
/* Filter by thresholds */
$match = true;
foreach ($thresholds as $fetchKey => $minMatchValue) {
$match = $this->fetch($timerId, $fetchKey) >= $minMatchValue;
if ($match) {
break;
}
}
if ($match) {
$result[] = $timerId;
}
}
return $result;
}
/**
* Get ordered list of timer ids
*
* @return array
*/
protected function _getOrderedTimerIds()
{
$timerIds = array_keys($this->_timers);
if (count($timerIds) <= 2) {
/* No sorting needed */
return $timerIds;
}
/* Prepare PCRE once to use it inside the loop body */
$nestingSep = preg_quote(Profiler::NESTING_SEPARATOR, '/');
$patternLastTimerId = '/' . $nestingSep . '(?:.(?!' . $nestingSep . '))+$/';
$prevTimerId = $timerIds[0];
$result = [$prevTimerId];
$numberTimerIds = count($timerIds);
for ($i = 1; $i < $numberTimerIds; $i++) {
$timerId = $timerIds[$i];
/* Skip already added timer */
if (!$timerId) {
continue;
}
/* Loop over all timers that need to be closed under previous timer */
while (strpos($timerId, $prevTimerId . Profiler::NESTING_SEPARATOR) !== 0) {
/* Add to result all timers nested in the previous timer */
for ($j = $i + 1; $j < $numberTimerIds; $j++) {
if (!$timerIds[$j]) {
continue;
}
if (strpos($timerIds[$j], $prevTimerId . Profiler::NESTING_SEPARATOR) === 0) {
$result[] = $timerIds[$j];
/* Mark timer as already added */
$timerIds[$j] = null;
}
}
/* Go to upper level timer */
$count = 0;
$prevTimerId = preg_replace($patternLastTimerId, '', $prevTimerId, -1, $count);
/* Break the loop if no replacements was done. It is possible when we are */
/* working with top level (root) item */
if (!$count) {
break;
}
}
/* Add current timer to the result */
$result[] = $timerId;
$prevTimerId = $timerId;
}
return $result;
}
}