94 lines
2.6 KiB
PHP
94 lines
2.6 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\Clock;
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/**
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* A monotonic clock suitable for performance profiling.
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*
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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final class MonotonicClock implements ClockInterface
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{
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private int $sOffset;
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private int $usOffset;
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private \DateTimeZone $timezone;
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/**
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* @throws \DateInvalidTimeZoneException When $timezone is invalid
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*/
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public function __construct(\DateTimeZone|string|null $timezone = null)
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{
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if (false === $offset = hrtime()) {
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throw new \RuntimeException('hrtime() returned false: the runtime environment does not provide access to a monotonic timer.');
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}
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$time = explode(' ', microtime(), 2);
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$this->sOffset = $time[1] - $offset[0];
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$this->usOffset = (int) ($time[0] * 1000000) - (int) ($offset[1] / 1000);
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$this->timezone = \is_string($timezone ??= date_default_timezone_get()) ? $this->withTimeZone($timezone)->timezone : $timezone;
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}
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public function now(): DatePoint
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{
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[$s, $us] = hrtime();
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if (1000000 <= $us = (int) ($us / 1000) + $this->usOffset) {
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++$s;
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$us -= 1000000;
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} elseif (0 > $us) {
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--$s;
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$us += 1000000;
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}
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if (6 !== \strlen($now = (string) $us)) {
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$now = str_pad($now, 6, '0', \STR_PAD_LEFT);
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}
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$now = '@'.($s + $this->sOffset).'.'.$now;
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return DatePoint::createFromInterface(new \DateTimeImmutable($now, $this->timezone))->setTimezone($this->timezone);
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}
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public function sleep(float|int $seconds): void
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{
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if (0 < $s = (int) $seconds) {
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sleep($s);
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}
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if (0 < $us = $seconds - $s) {
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usleep((int) ($us * 1E6));
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}
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}
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/**
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* @throws \DateInvalidTimeZoneException When $timezone is invalid
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*/
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public function withTimeZone(\DateTimeZone|string $timezone): static
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{
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if (\PHP_VERSION_ID >= 80300 && \is_string($timezone)) {
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$timezone = new \DateTimeZone($timezone);
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} elseif (\is_string($timezone)) {
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try {
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$timezone = new \DateTimeZone($timezone);
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} catch (\Exception $e) {
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throw new \DateInvalidTimeZoneException($e->getMessage(), $e->getCode(), $e);
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}
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}
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$clone = clone $this;
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$clone->timezone = $timezone;
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return $clone;
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}
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}
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