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<?php |
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declare(strict_types=1); |
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/** |
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* This file is part of Esi\Bench. |
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* |
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* (c) Eric Sizemore <[email protected]> |
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* (c) Jeremy Perret <[email protected]> |
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* |
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* This source file is subject to the MIT license. For the full copyright, |
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* license information, and credits/acknowledgements, please view the LICENSE |
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* and README files that were distributed with this source code. |
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*/ |
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/** |
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* Esi\Bench is a fork of Ubench (https://github.com/devster/ubench) which is: |
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* Copyright (c) 2012-2020 Jeremy Perret<[email protected]> |
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* |
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* For a list of changes in this library, in comparison to the original library, please {@see CHANGELOG.md}. |
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*/ |
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namespace Esi\Bench; |
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use LogicException; |
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use function hrtime; |
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use function memory_get_peak_usage; |
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use function memory_get_usage; |
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use function preg_replace; |
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use function round; |
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/** |
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* Micro PHP library for benchmarking. |
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* |
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* @see Tests\BenchTest |
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*/ |
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class Bench implements BenchInterface |
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{ |
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/** |
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* End time in nanoseconds. |
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*/ |
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protected float $endTime = 0.0; |
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/** |
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* Memory usage. |
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*/ |
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protected int $memoryUsage = 0; |
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/** |
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* Start time in nanoseconds. |
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*/ |
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protected float $startTime = 0.0; |
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/** |
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* @inheritDoc |
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*/ |
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public function end(): self |
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{ |
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if (!$this->hasStarted()) { |
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throw new LogicException('Bench has not been started. Call start() first.'); |
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} |
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$this->endTime = hrtime(true); |
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$this->memoryUsage = memory_get_usage(true); |
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return $this; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getMemoryPeak(bool $readable = false, null|string $format = null): int|string |
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{ |
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$memory = memory_get_peak_usage(true); |
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if ($readable) { |
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return $memory; |
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} |
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return self::readableSize($memory, $format); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getMemoryUsage(bool $readable = false, null|string $format = null): int|string |
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{ |
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if (!$this->hasStarted()) { |
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throw new LogicException('Bench has not been started. Call start() first.'); |
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} |
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if (!$this->hasEnded()) { |
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throw new LogicException('Bench has not been ended. Call end() first.'); |
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} |
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if ($readable) { |
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return $this->memoryUsage; |
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} |
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return self::readableSize($this->memoryUsage, $format); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getTime(bool $readable = false, null|string $format = null): float|string |
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{ |
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if (!$this->hasStarted()) { |
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throw new LogicException('Bench has not been started. Call start() first.'); |
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} |
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if (!$this->hasEnded()) { |
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throw new LogicException('Bench has not been ended. Call end() first.'); |
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} |
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// Convert to seconds |
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$elapsed = ($this->endTime - $this->startTime) / 1e9; |
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if ($readable) { |
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return $elapsed; |
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} |
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return self::readableElapsedTime($elapsed, $format); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function hasEnded(): bool |
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{ |
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return $this->endTime !== 0.0; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function hasStarted(): bool |
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{ |
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return $this->startTime !== 0.0; |
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} |
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/** |
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* @inheritDoc |
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* |
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* @psalm-template T |
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* |
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* @param T $arguments |
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*/ |
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public function run(callable $callable, mixed ...$arguments): mixed |
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{ |
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$this->start(); |
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/** @psalm-var T $result */ |
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$result = $callable(...$arguments); |
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$this->end(); |
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return $result; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function start(): void |
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{ |
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$this->startTime = hrtime(true); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public static function readableElapsedTime(float $seconds, null|string $format = null, int $round = 3): string |
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{ |
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$format ??= '%.3f%s'; |
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if ($seconds >= 1) { |
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return \sprintf($format, round($seconds, $round), 's'); |
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} |
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$format = (string) preg_replace('/(%.\d+f)/', '%d', $format); |
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return \sprintf($format, round($seconds * 1000, $round), 'ms'); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public static function readableSize(int $size, null|string $format = null, int $round = 3): string |
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{ |
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/** |
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* @psalm-var array<array-key, string> $units |
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*/ |
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static $units = ['B', 'KB', 'MB', 'GB', 'TB']; |
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/** |
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* @psalm-var int $mod |
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*/ |
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static $mod = 1024; |
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$format ??= '%.2f%s'; |
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if ($size <= $mod) { |
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return \sprintf('%dB', round($size, $round)); |
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} |
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$unit = 0; |
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do { |
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++$unit; |
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$size /= $mod; |
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} while ($size > $mod); |
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return \sprintf($format, round($size, $round), $units[$unit]); |
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} |
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} |
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