1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/libfsserver/include/fsserver/notification.h Sun Jul 11 23:21:08 2021 +0200
1.3 @@ -0,0 +1,60 @@
1.4 +/*
1.5 + * Notification support.
1.6 + *
1.7 + * Copyright (C) 2021 Paul Boddie <paul@boddie.org.uk>
1.8 + *
1.9 + * This program is free software; you can redistribute it and/or
1.10 + * modify it under the terms of the GNU General Public License as
1.11 + * published by the Free Software Foundation; either version 2 of
1.12 + * the License, or (at your option) any later version.
1.13 + *
1.14 + * This program is distributed in the hope that it will be useful,
1.15 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.17 + * GNU General Public License for more details.
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License
1.20 + * along with this program; if not, write to the Free Software
1.21 + * Foundation, Inc., 51 Franklin Street, Fifth Floor,
1.22 + * Boston, MA 02110-1301, USA
1.23 + */
1.24 +
1.25 +#pragma once
1.26 +
1.27 +#include <set>
1.28 +
1.29 +#include <systypes/base.h>
1.30 +
1.31 +
1.32 +
1.33 +/* Notification support, allowing pipe or file users to receive events due to
1.34 + activity on those objects. */
1.35 +
1.36 +class NotificationSupport
1.37 +{
1.38 +protected:
1.39 + /* Endpoint count. */
1.40 +
1.41 + unsigned int _max_endpoints;
1.42 +
1.43 + /* Notification endpoints and flags, set up at initialisation for the
1.44 + appropriate number of endpoints. */
1.45 +
1.46 + std::set<l4_cap_idx_t> *_notifiers;
1.47 + notify_flags_t *_flags, *_deferred;
1.48 +
1.49 + virtual void release_notifiers();
1.50 +
1.51 +public:
1.52 + explicit NotificationSupport(unsigned int endpoints);
1.53 +
1.54 + virtual ~NotificationSupport();
1.55 +
1.56 + virtual void notify(unsigned int endpoint, notify_flags_t flags, l4_cap_idx_t source=L4_INVALID_CAP);
1.57 +
1.58 + virtual void subscribe(unsigned int endpoint, l4_cap_idx_t notifier, notify_flags_t flags);
1.59 +
1.60 + virtual void unsubscribe(unsigned int endpoint, l4_cap_idx_t notifier);
1.61 +};
1.62 +
1.63 +// vim: tabstop=4 expandtab shiftwidth=4