mutter/cogl/cogl-poll.c

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2012 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-poll.h"
#include "cogl-winsys-private.h"
#include "cogl-context-private.h"
void
cogl_poll_get_info (CoglContext *context,
CoglPollFD **poll_fds,
int *n_poll_fds,
int64_t *timeout)
{
const CoglWinsysVtable *winsys;
_COGL_RETURN_IF_FAIL (cogl_is_context (context));
_COGL_RETURN_IF_FAIL (poll_fds != NULL);
_COGL_RETURN_IF_FAIL (n_poll_fds != NULL);
_COGL_RETURN_IF_FAIL (timeout != NULL);
if (!COGL_TAILQ_EMPTY (&context->onscreen_events_queue))
{
*n_poll_fds = 0;
*timeout = 0;
return;
}
winsys = _cogl_context_get_winsys (context);
if (winsys->poll_get_info)
{
winsys->poll_get_info (context,
poll_fds,
n_poll_fds,
timeout);
return;
}
/* By default we'll assume Cogl doesn't need to block on anything */
*poll_fds = NULL;
*n_poll_fds = 0;
*timeout = -1; /* no timeout */
}
void
cogl_poll_dispatch (CoglContext *context,
const CoglPollFD *poll_fds,
int n_poll_fds)
{
const CoglWinsysVtable *winsys;
_COGL_RETURN_IF_FAIL (cogl_is_context (context));
if (!COGL_TAILQ_EMPTY (&context->onscreen_events_queue))
_cogl_dispatch_onscreen_events (context);
winsys = _cogl_context_get_winsys (context);
if (winsys->poll_dispatch)
winsys->poll_dispatch (context, poll_fds, n_poll_fds);
}