FFI: A state is kept somewhere between two HTTP requst #18621

<?php

class LibNotifyDriver
{
    private static FFI $ffi;

    public function send(): bool
    {
        $this->initialize();
        $notification = self::$ffi->notify_notification_new(
            'a title',
            'a body',
            null,
        );
        $value = self::$ffi->notify_notification_show($notification, null);
        self::$ffi->g_object_unref($notification);

        return $value;
    }

    private static function initialize(): void
    {
        if (isset(self::$ffi)) {
            return;
        }

        $header = <<<'C'
            typedef bool gboolean;
            typedef void* gpointer;
            typedef struct _NotifyNotification NotifyNotification;
            typedef struct _GTypeInstanceError GError;

            gboolean notify_init(const char *app_name);
            gboolean notify_is_initted (void);
            void notify_uninit (void);
            NotifyNotification *notify_notification_new(const char *summary, const char *body, const char *icon);
            gboolean notify_notification_show (NotifyNotification *notification, GError **error);
            void g_object_unref (gpointer object);
            C;

        $ffi = FFI::cdef($header, 'libnotify.so.4');

        if (!$ffi) {
            throw new RuntimeException('Unable to load libnotify');
        }

        self::$ffi = $ffi;

        if (!self::$ffi->notify_init('app')) {
            throw new RuntimeException('Unable to initialize libnotify');
        }

        if (!self::$ffi->notify_is_initted()) {
            throw new RuntimeException('Libnotify has not been initialized');
        }
    }
}

$driver = new LibNotifyDriver();
$driver->send();