mutter/cogl/cogl-poll.c

268 lines
6.9 KiB
C
Raw Normal View History

/*
* Cogl
*
This re-licenses Cogl 1.18 under the MIT license Since the Cogl 1.18 branch is actively maintained in parallel with the master branch; this is a counter part to commit 1b83ef938fc16b which re-licensed the master branch to use the MIT license. This re-licensing is a follow up to the proposal that was sent to the Cogl mailing list: http://lists.freedesktop.org/archives/cogl/2013-December/001465.html Note: there was a copyright assignment policy in place for Clutter (and therefore Cogl which was part of Clutter at the time) until the 11th of June 2010 and so we only checked the details after that point (commit 0bbf50f905) For each file, authors were identified via this Git command: $ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD We received blanket approvals for re-licensing all Red Hat and Collabora contributions which reduced how many people needed to be contacted individually: - http://lists.freedesktop.org/archives/cogl/2013-December/001470.html - http://lists.freedesktop.org/archives/cogl/2014-January/001536.html Individual approval requests were sent to all the other identified authors who all confirmed the re-license on the Cogl mailinglist: http://lists.freedesktop.org/archives/cogl/2014-January As well as updating the copyright header in all sources files, the COPYING file has been updated to reflect the license change and also document the other licenses used in Cogl such as the SGI Free Software License B, version 2.0 and the 3-clause BSD license. This patch was not simply cherry-picked from master; but the same methodology was used to check the source files.
2014-02-21 20:28:54 -05:00
* A Low Level GPU Graphics and Utilities API
*
* Copyright (C) 2012 Intel Corporation.
*
This re-licenses Cogl 1.18 under the MIT license Since the Cogl 1.18 branch is actively maintained in parallel with the master branch; this is a counter part to commit 1b83ef938fc16b which re-licensed the master branch to use the MIT license. This re-licensing is a follow up to the proposal that was sent to the Cogl mailing list: http://lists.freedesktop.org/archives/cogl/2013-December/001465.html Note: there was a copyright assignment policy in place for Clutter (and therefore Cogl which was part of Clutter at the time) until the 11th of June 2010 and so we only checked the details after that point (commit 0bbf50f905) For each file, authors were identified via this Git command: $ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD We received blanket approvals for re-licensing all Red Hat and Collabora contributions which reduced how many people needed to be contacted individually: - http://lists.freedesktop.org/archives/cogl/2013-December/001470.html - http://lists.freedesktop.org/archives/cogl/2014-January/001536.html Individual approval requests were sent to all the other identified authors who all confirmed the re-license on the Cogl mailinglist: http://lists.freedesktop.org/archives/cogl/2014-January As well as updating the copyright header in all sources files, the COPYING file has been updated to reflect the license change and also document the other licenses used in Cogl such as the SGI Free Software License B, version 2.0 and the 3-clause BSD license. This patch was not simply cherry-picked from master; but the same methodology was used to check the source files.
2014-02-21 20:28:54 -05:00
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
This re-licenses Cogl 1.18 under the MIT license Since the Cogl 1.18 branch is actively maintained in parallel with the master branch; this is a counter part to commit 1b83ef938fc16b which re-licensed the master branch to use the MIT license. This re-licensing is a follow up to the proposal that was sent to the Cogl mailing list: http://lists.freedesktop.org/archives/cogl/2013-December/001465.html Note: there was a copyright assignment policy in place for Clutter (and therefore Cogl which was part of Clutter at the time) until the 11th of June 2010 and so we only checked the details after that point (commit 0bbf50f905) For each file, authors were identified via this Git command: $ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD We received blanket approvals for re-licensing all Red Hat and Collabora contributions which reduced how many people needed to be contacted individually: - http://lists.freedesktop.org/archives/cogl/2013-December/001470.html - http://lists.freedesktop.org/archives/cogl/2014-January/001536.html Individual approval requests were sent to all the other identified authors who all confirmed the re-license on the Cogl mailinglist: http://lists.freedesktop.org/archives/cogl/2014-January As well as updating the copyright header in all sources files, the COPYING file has been updated to reflect the license change and also document the other licenses used in Cogl such as the SGI Free Software License B, version 2.0 and the 3-clause BSD license. This patch was not simply cherry-picked from master; but the same methodology was used to check the source files.
2014-02-21 20:28:54 -05:00
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
This re-licenses Cogl 1.18 under the MIT license Since the Cogl 1.18 branch is actively maintained in parallel with the master branch; this is a counter part to commit 1b83ef938fc16b which re-licensed the master branch to use the MIT license. This re-licensing is a follow up to the proposal that was sent to the Cogl mailing list: http://lists.freedesktop.org/archives/cogl/2013-December/001465.html Note: there was a copyright assignment policy in place for Clutter (and therefore Cogl which was part of Clutter at the time) until the 11th of June 2010 and so we only checked the details after that point (commit 0bbf50f905) For each file, authors were identified via this Git command: $ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD We received blanket approvals for re-licensing all Red Hat and Collabora contributions which reduced how many people needed to be contacted individually: - http://lists.freedesktop.org/archives/cogl/2013-December/001470.html - http://lists.freedesktop.org/archives/cogl/2014-January/001536.html Individual approval requests were sent to all the other identified authors who all confirmed the re-license on the Cogl mailinglist: http://lists.freedesktop.org/archives/cogl/2014-January As well as updating the copyright header in all sources files, the COPYING file has been updated to reflect the license change and also document the other licenses used in Cogl such as the SGI Free Software License B, version 2.0 and the 3-clause BSD license. This patch was not simply cherry-picked from master; but the same methodology was used to check the source files.
2014-02-21 20:28:54 -05:00
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-poll.h"
#include "cogl-poll-private.h"
#include "cogl-winsys-private.h"
#include "cogl-renderer-private.h"
struct _CoglPollSource
{
int fd;
CoglPollPrepareCallback prepare;
CoglPollDispatchCallback dispatch;
void *user_data;
};
int
cogl_poll_renderer_get_info (CoglRenderer *renderer,
CoglPollFD **poll_fds,
int *n_poll_fds,
int64_t *timeout)
{
GList *l, *next;
_COGL_RETURN_VAL_IF_FAIL (cogl_is_renderer (renderer), 0);
_COGL_RETURN_VAL_IF_FAIL (poll_fds != NULL, 0);
_COGL_RETURN_VAL_IF_FAIL (n_poll_fds != NULL, 0);
_COGL_RETURN_VAL_IF_FAIL (timeout != NULL, 0);
*timeout = -1;
Use the Wayland embedded linked list implementation instead of BSD's This removes cogl-queue.h and adds a copy of Wayland's embedded list implementation. The advantage of the Wayland model is that it is much simpler and so it is easier to follow. It also doesn't require defining a typedef for every list type. The downside is that there is only one list type which is a doubly-linked list where the head has a pointer to both the beginning and the end. The BSD implementation has many more combinations some of which we were taking advantage of to reduce the size of critical structs where we didn't need a pointer to the end of the list. The corresponding changes to uses of cogl-queue.h are: • COGL_STAILQ_* was used for onscreen the list of events and dirty notifications. This makes the size of the CoglContext grow by one pointer. • COGL_TAILQ_* was used for fences. • COGL_LIST_* for CoglClosures. In this case the list head now has an extra pointer which means CoglOnscreen will grow by the size of three pointers, but this doesn't seem like a particularly important struct to optimise for size anyway. • COGL_LIST_* was used for the list of foreign GLES2 offscreens. • COGL_TAILQ_* was used for the list of sub stacks in a CoglMemoryStack. • COGL_LIST_* was used to track the list of layers that haven't had code generated yet while generating a fragment shader for a pipeline. • COGL_LIST_* was used to track the pipeline hierarchy in CoglNode. The last part is a bit more controversial because it increases the size of CoglPipeline and CoglPipelineLayer by one pointer in order to have the redundant tail pointer for the list head. Normally we try to be very careful about the size of the CoglPipeline struct. Because CoglPipeline is slice-allocated, this effectively ends up adding two pointers to the size because GSlice rounds up to the size of two pointers. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 13abf613b15f571ba1fcf6d2eb831ffc6fa31324) Conflicts: cogl/cogl-context-private.h cogl/cogl-context.c cogl/driver/gl/cogl-pipeline-fragend-glsl.c doc/reference/cogl-2.0-experimental/Makefile.am
2013-06-08 18:03:25 -04:00
if (!_cogl_list_empty (&renderer->idle_closures))
*timeout = 0;
/* This loop needs to cope with the prepare callback removing its
* own fd */
for (l = renderer->poll_sources; l; l = next)
{
CoglPollSource *source = l->data;
next = l->next;
if (source->prepare)
{
int64_t source_timeout = source->prepare (source->user_data);
if (source_timeout >= 0 &&
(*timeout == -1 || *timeout > source_timeout))
*timeout = source_timeout;
}
}
/* This is deliberately set after calling the prepare callbacks in
* case one of them removes its fd */
*poll_fds = (void *)renderer->poll_fds->data;
*n_poll_fds = renderer->poll_fds->len;
return renderer->poll_fds_age;
}
void
cogl_poll_renderer_dispatch (CoglRenderer *renderer,
const CoglPollFD *poll_fds,
int n_poll_fds)
{
GList *l, *next;
_COGL_RETURN_IF_FAIL (cogl_is_renderer (renderer));
_cogl_closure_list_invoke_no_args (&renderer->idle_closures);
/* This loop needs to cope with the dispatch callback removing its
* own fd */
for (l = renderer->poll_sources; l; l = next)
{
CoglPollSource *source = l->data;
int i;
next = l->next;
if (source->fd == -1)
{
source->dispatch (source->user_data, 0);
continue;
}
for (i = 0; i < n_poll_fds; i++)
{
const CoglPollFD *pollfd = &poll_fds[i];
if (pollfd->fd == source->fd)
{
source->dispatch (source->user_data, pollfd->revents);
break;
}
}
}
}
static int
find_pollfd (CoglRenderer *renderer, int fd)
{
int i;
for (i = 0; i < renderer->poll_fds->len; i++)
{
CoglPollFD *pollfd = &g_array_index (renderer->poll_fds, CoglPollFD, i);
if (pollfd->fd == fd)
return i;
}
return -1;
}
void
_cogl_poll_renderer_remove_fd (CoglRenderer *renderer, int fd)
{
int i = find_pollfd (renderer, fd);
GList *l;
if (i < 0)
return;
g_array_remove_index_fast (renderer->poll_fds, i);
renderer->poll_fds_age++;
for (l = renderer->poll_sources; l; l = l->next)
{
CoglPollSource *source = l->data;
if (source->fd == fd)
{
renderer->poll_sources =
g_list_delete_link (renderer->poll_sources, l);
g_slice_free (CoglPollSource, source);
break;
}
}
}
void
_cogl_poll_renderer_modify_fd (CoglRenderer *renderer,
int fd,
CoglPollFDEvent events)
{
int fd_index = find_pollfd (renderer, fd);
if (fd_index == -1)
g_warn_if_reached ();
else
{
CoglPollFD *pollfd =
&g_array_index (renderer->poll_sources, CoglPollFD, fd_index);
pollfd->events = events;
renderer->poll_fds_age++;
}
}
void
_cogl_poll_renderer_add_fd (CoglRenderer *renderer,
int fd,
CoglPollFDEvent events,
CoglPollPrepareCallback prepare,
CoglPollDispatchCallback dispatch,
void *user_data)
{
CoglPollFD pollfd = {
fd,
events
};
CoglPollSource *source;
_cogl_poll_renderer_remove_fd (renderer, fd);
source = g_slice_new0 (CoglPollSource);
source->fd = fd;
source->prepare = prepare;
source->dispatch = dispatch;
source->user_data = user_data;
renderer->poll_sources = g_list_prepend (renderer->poll_sources, source);
g_array_append_val (renderer->poll_fds, pollfd);
renderer->poll_fds_age++;
}
CoglPollSource *
_cogl_poll_renderer_add_source (CoglRenderer *renderer,
CoglPollPrepareCallback prepare,
CoglPollDispatchCallback dispatch,
void *user_data)
{
CoglPollSource *source;
source = g_slice_new0 (CoglPollSource);
source->fd = -1;
source->prepare = prepare;
source->dispatch = dispatch;
source->user_data = user_data;
renderer->poll_sources = g_list_prepend (renderer->poll_sources, source);
return source;
}
void
_cogl_poll_renderer_remove_source (CoglRenderer *renderer,
CoglPollSource *source)
{
GList *l;
for (l = renderer->poll_sources; l; l = l->next)
{
if (l->data == source)
{
renderer->poll_sources =
g_list_delete_link (renderer->poll_sources, l);
g_slice_free (CoglPollSource, source);
break;
}
}
}
CoglClosure *
_cogl_poll_renderer_add_idle (CoglRenderer *renderer,
CoglIdleCallback idle_cb,
void *user_data,
CoglUserDataDestroyCallback destroy_cb)
{
return _cogl_closure_list_add (&renderer->idle_closures,
idle_cb,
user_data,
destroy_cb);
}