1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/pkg/devices/util/include/event-loop.h Fri May 18 22:34:51 2018 +0200
1.3 @@ -0,0 +1,65 @@
1.4 +/*
1.5 + * Generic event loop functionality.
1.6 + *
1.7 + * (c) 2018 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 +#ifdef __cplusplus
1.28 +
1.29 +#include <pthread.h>
1.30 +#include <pthread-l4.h>
1.31 +
1.32 +/* Event loop abstraction. */
1.33 +
1.34 +class Event_loop
1.35 +{
1.36 +protected:
1.37 + /* Private data for the handler. */
1.38 +
1.39 + void *_priv;
1.40 +
1.41 + /* Thread properties. */
1.42 +
1.43 + int _priority;
1.44 + pthread_t _pthread;
1.45 +
1.46 +public:
1.47 + /* Initialise the event loop with an event handler function and private data,
1.48 + plus thread priority. */
1.49 +
1.50 + explicit Event_loop(void *priv, int priority=0x20)
1.51 + : _priv(priv), _priority(priority)
1.52 + {
1.53 + }
1.54 +
1.55 + /* Static main loop function for event-handling thread. */
1.56 +
1.57 + static void *event_loop(void *data);
1.58 +
1.59 + /* Event handler method. */
1.60 +
1.61 + virtual void handle() = 0;
1.62 +
1.63 + /* Initiation function. */
1.64 +
1.65 + virtual void start();
1.66 +};
1.67 +
1.68 +#endif