# windpress/3.2.89/src/Core/Scanner/ScanLock.php

WindPress – Tailwind CSS integration for WordPress, version 3.2.89. 46 lines.

- Page: https://pluginprobe.com/plugins/windpress/3.2.89/code/src/Core/Scanner/ScanLock.php
- Raw: https://pluginprobe.com/plugins/windpress/3.2.89/raw/src/Core/Scanner/ScanLock.php
- Modified: 2026-09-16T09:39:08+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/windpress/3.2.89/code/src/Core/Scanner/ScanLock.php#L10-L20`.

```php
<?php

declare (strict_types=1);
namespace WindPress\WindPress\Core\Scanner;

class ScanLock
{
    private const LEASE_SECONDS = 300;
    public static function acquire(string $resource): ?string
    {
        global $wpdb;
        $option = self::option_name($resource);
        $previous = get_option($option, \false);
        if (is_array($previous) && ($previous['expires'] ?? 0) <= time()) {
            // Compare the entire observed lease so another request's replacement survives.
            $wpdb->delete($wpdb->options, ['option_name' => $option, 'option_value' => maybe_serialize($previous)]);
            wp_cache_delete($option, 'options');
        }
        $token = wp_generate_uuid4();
        $acquired = add_option($option, ['token' => $token, 'expires' => time() + self::LEASE_SECONDS], '', \false);
        return $acquired ? $token : null;
    }
    public static function is_owner(string $resource, string $token): bool
    {
        $option = self::option_name($resource);
        wp_cache_delete($option, 'options');
        $lease = get_option($option, \false);
        return is_array($lease) && ($lease['token'] ?? null) === $token && ($lease['expires'] ?? 0) > time();
    }
    public static function release(string $resource, string $token): void
    {
        global $wpdb;
        $option = self::option_name($resource);
        wp_cache_delete($option, 'options');
        $lease = get_option($option, \false);
        if (is_array($lease) && ($lease['token'] ?? null) === $token) {
            $wpdb->delete($wpdb->options, ['option_name' => $option, 'option_value' => maybe_serialize($lease)]);
            wp_cache_delete($option, 'options');
        }
    }
    private static function option_name(string $resource): string
    {
        return 'windpress_scan_lock_' . hash('sha256', $resource);
    }
}

```