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lib/tus/vendor/symfony/clock/MonotonicClock.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Clock;
+
+/**
+ * A monotonic clock suitable for performance profiling.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+final class MonotonicClock implements ClockInterface
+{
+    private int $sOffset;
+    private int $usOffset;
+    private \DateTimeZone $timezone;
+
+    /**
+     * @throws \DateInvalidTimeZoneException When $timezone is invalid
+     */
+    public function __construct(\DateTimeZone|string|null $timezone = null)
+    {
+        if (false === $offset = hrtime()) {
+            throw new \RuntimeException('hrtime() returned false: the runtime environment does not provide access to a monotonic timer.');
+        }
+
+        $time = explode(' ', microtime(), 2);
+        $this->sOffset = $time[1] - $offset[0];
+        $this->usOffset = (int) ($time[0] * 1000000) - (int) ($offset[1] / 1000);
+
+        $this->timezone = \is_string($timezone ??= date_default_timezone_get()) ? $this->withTimeZone($timezone)->timezone : $timezone;
+    }
+
+    public function now(): DatePoint
+    {
+        [$s, $us] = hrtime();
+
+        if (1000000 <= $us = (int) ($us / 1000) + $this->usOffset) {
+            ++$s;
+            $us -= 1000000;
+        } elseif (0 > $us) {
+            --$s;
+            $us += 1000000;
+        }
+
+        if (6 !== \strlen($now = (string) $us)) {
+            $now = str_pad($now, 6, '0', \STR_PAD_LEFT);
+        }
+
+        $now = '@'.($s + $this->sOffset).'.'.$now;
+
+        return DatePoint::createFromInterface(new \DateTimeImmutable($now, $this->timezone))->setTimezone($this->timezone);
+    }
+
+    public function sleep(float|int $seconds): void
+    {
+        if (0 < $s = (int) $seconds) {
+            sleep($s);
+        }
+
+        if (0 < $us = $seconds - $s) {
+            usleep((int) ($us * 1E6));
+        }
+    }
+
+    /**
+     * @throws \DateInvalidTimeZoneException When $timezone is invalid
+     */
+    public function withTimeZone(\DateTimeZone|string $timezone): static
+    {
+        if (\PHP_VERSION_ID >= 80300 && \is_string($timezone)) {
+            $timezone = new \DateTimeZone($timezone);
+        } elseif (\is_string($timezone)) {
+            try {
+                $timezone = new \DateTimeZone($timezone);
+            } catch (\Exception $e) {
+                throw new \DateInvalidTimeZoneException($e->getMessage(), $e->getCode(), $e);
+            }
+        }
+
+        $clone = clone $this;
+        $clone->timezone = $timezone;
+
+        return $clone;
+    }
+}