167 lines
3.9 KiB
PHP
167 lines
3.9 KiB
PHP
<?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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use Symfony\Contracts\Service\ResetInterface;
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// Help opcache.preload discover always-needed symbols
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class_exists(Section::class);
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/**
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* Stopwatch provides a way to profile code.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class Stopwatch implements ResetInterface
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{
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/**
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* @var bool
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*/
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private $morePrecision;
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/**
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* @var Section[]
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*/
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private $sections;
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/**
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* @var Section[]
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*/
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private $activeSections;
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/**
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* @param bool $morePrecision If true, time is stored as float to keep the original microsecond precision
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*/
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public function __construct(bool $morePrecision = false)
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{
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$this->morePrecision = $morePrecision;
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$this->reset();
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}
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/**
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* @return Section[]
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*/
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public function getSections()
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{
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return $this->sections;
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}
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/**
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* Creates a new section or re-opens an existing section.
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*
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* @param string|null $id The id of the session to re-open, null to create a new one
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*
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* @throws \LogicException When the section to re-open is not reachable
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*/
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public function openSection(string $id = null)
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{
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$current = end($this->activeSections);
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if (null !== $id && null === $current->get($id)) {
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throw new \LogicException(sprintf('The section "%s" has been started at an other level and cannot be opened.', $id));
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}
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$this->start('__section__.child', 'section');
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$this->activeSections[] = $current->open($id);
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$this->start('__section__');
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}
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/**
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* Stops the last started section.
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*
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* The id parameter is used to retrieve the events from this section.
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*
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* @see getSectionEvents()
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*
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* @throws \LogicException When there's no started section to be stopped
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*/
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public function stopSection(string $id)
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{
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$this->stop('__section__');
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if (1 == \count($this->activeSections)) {
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throw new \LogicException('There is no started section to stop.');
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}
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$this->sections[$id] = array_pop($this->activeSections)->setId($id);
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$this->stop('__section__.child');
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}
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/**
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* Starts an event.
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*
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* @return StopwatchEvent
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*/
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public function start(string $name, string $category = null)
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{
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return end($this->activeSections)->startEvent($name, $category);
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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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* @return bool
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*/
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public function isStarted(string $name)
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{
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return end($this->activeSections)->isEventStarted($name);
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}
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/**
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* Stops an event.
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*
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* @return StopwatchEvent
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*/
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public function stop(string $name)
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{
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return end($this->activeSections)->stopEvent($name);
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}
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/**
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* Stops then restarts an event.
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*
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* @return StopwatchEvent
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*/
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public function lap(string $name)
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{
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return end($this->activeSections)->stopEvent($name)->start();
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}
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/**
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* Returns a specific event by name.
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*
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* @return StopwatchEvent
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*/
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public function getEvent(string $name)
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{
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return end($this->activeSections)->getEvent($name);
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}
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/**
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* Gets all events for a given section.
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*
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* @return StopwatchEvent[]
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*/
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public function getSectionEvents(string $id)
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{
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return isset($this->sections[$id]) ? $this->sections[$id]->getEvents() : [];
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}
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/**
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* Resets the stopwatch to its original state.
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*/
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public function reset()
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{
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$this->sections = $this->activeSections = ['__root__' => new Section(null, $this->morePrecision)];
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}
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}
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