231 lines
5.3 KiB
PHP
231 lines
5.3 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Stopwatch;
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/**
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* Represents an Event managed by Stopwatch.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class StopwatchEvent
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{
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/**
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* @var StopwatchPeriod[]
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*/
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private array $periods = [];
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private float $origin;
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private string $category;
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private bool $morePrecision;
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/**
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* @var float[]
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*/
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private array $started = [];
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private string $name;
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/**
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* @param float $origin The origin time in milliseconds
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* @param string|null $category The event category or null to use the default
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* @param bool $morePrecision If true, time is stored as float to keep the original microsecond precision
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* @param string|null $name The event name or null to define the name as default
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*
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* @throws \InvalidArgumentException When the raw time is not valid
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*/
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public function __construct(float $origin, string $category = null, bool $morePrecision = false, string $name = null)
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{
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$this->origin = $this->formatTime($origin);
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$this->category = \is_string($category) ? $category : 'default';
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$this->morePrecision = $morePrecision;
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$this->name = $name ?? 'default';
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}
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/**
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* Gets the category.
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*/
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public function getCategory(): string
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{
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return $this->category;
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}
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/**
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* Gets the origin in milliseconds.
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*/
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public function getOrigin(): float
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{
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return $this->origin;
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}
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/**
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* Starts a new event period.
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*
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* @return $this
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*/
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public function start(): static
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{
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$this->started[] = $this->getNow();
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return $this;
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}
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/**
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* Stops the last started event period.
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*
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* @return $this
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*
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* @throws \LogicException When stop() is called without a matching call to start()
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*/
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public function stop(): static
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{
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if (!\count($this->started)) {
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throw new \LogicException('stop() called but start() has not been called before.');
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}
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$this->periods[] = new StopwatchPeriod(array_pop($this->started), $this->getNow(), $this->morePrecision);
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return $this;
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}
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/**
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* Checks if the event was started.
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*/
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public function isStarted(): bool
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{
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return !empty($this->started);
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}
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/**
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* Stops the current period and then starts a new one.
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*
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* @return $this
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*/
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public function lap(): static
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{
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return $this->stop()->start();
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}
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/**
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* Stops all non already stopped periods.
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*
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* @return void
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*/
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public function ensureStopped()
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{
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while (\count($this->started)) {
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$this->stop();
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}
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}
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/**
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* Gets all event periods.
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*
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* @return StopwatchPeriod[]
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*/
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public function getPeriods(): array
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{
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return $this->periods;
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}
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/**
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* Gets the relative time of the start of the first period in milliseconds.
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*/
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public function getStartTime(): int|float
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{
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if (isset($this->periods[0])) {
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return $this->periods[0]->getStartTime();
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}
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if ($this->started) {
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return $this->started[0];
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}
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return 0;
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}
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/**
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* Gets the relative time of the end of the last period in milliseconds.
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*/
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public function getEndTime(): int|float
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{
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$count = \count($this->periods);
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return $count ? $this->periods[$count - 1]->getEndTime() : 0;
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}
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/**
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* Gets the duration of the events in milliseconds (including all periods).
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*/
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public function getDuration(): int|float
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{
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$periods = $this->periods;
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$left = \count($this->started);
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for ($i = $left - 1; $i >= 0; --$i) {
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$periods[] = new StopwatchPeriod($this->started[$i], $this->getNow(), $this->morePrecision);
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}
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$total = 0;
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foreach ($periods as $period) {
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$total += $period->getDuration();
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}
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return $total;
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}
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/**
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* Gets the max memory usage of all periods in bytes.
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*/
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public function getMemory(): int
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{
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$memory = 0;
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foreach ($this->periods as $period) {
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if ($period->getMemory() > $memory) {
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$memory = $period->getMemory();
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}
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}
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return $memory;
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}
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/**
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* Return the current time relative to origin in milliseconds.
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*/
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protected function getNow(): float
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{
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return $this->formatTime(microtime(true) * 1000 - $this->origin);
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}
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/**
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* Formats a time.
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*
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* @throws \InvalidArgumentException When the raw time is not valid
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*/
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private function formatTime(float $time): float
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{
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return round($time, 1);
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}
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/**
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* Gets the event name.
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*/
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public function getName(): string
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{
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return $this->name;
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}
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public function __toString(): string
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{
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return sprintf('%s/%s: %.2F MiB - %d ms', $this->getCategory(), $this->getName(), $this->getMemory() / 1024 / 1024, $this->getDuration());
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}
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}
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