gst/schedulers/gstoptimalscheduler.c: Fixes to maintain internal consistency of the scheduler data structures.

Original commit message from CVS:
* gst/schedulers/gstoptimalscheduler.c: (add_to_chain),
(remove_from_chain), (chain_group_set_enabled), (add_to_group),
(merge_groups), (setup_group_scheduler),
(group_inc_links_for_element), (gst_opt_scheduler_iterate),
(gst_opt_scheduler_show):
Fixes to maintain internal consistency of the scheduler data
structures.
- adding an enabled group to a chain should increment the
number of enabled elements in that chain.
- removing an enabled group from a chain could disable the
chain.
- removing a disabled group from a chain could enable the
chain.
- add g_assert when internal inconsistency is detected.
- adding an element to a group could increase the number of
links this group has with other groups.
- merging two groups also merges the chains.
- also show group links in the _show method.

Please report regressions ASAP, so I can fix them.
This commit is contained in:
Wim Taymans 2004-05-27 09:33:29 +00:00
parent 7193393c18
commit 6187bf80e7
2 changed files with 114 additions and 10 deletions

View file

@ -1,3 +1,25 @@
2004-05-27 Wim Taymans <wim@fluendo.com>
* gst/schedulers/gstoptimalscheduler.c: (add_to_chain),
(remove_from_chain), (chain_group_set_enabled), (add_to_group),
(merge_groups), (setup_group_scheduler),
(group_inc_links_for_element), (gst_opt_scheduler_iterate),
(gst_opt_scheduler_show):
Fixes to maintain internal consistency of the scheduler data
structures.
- adding an enabled group to a chain should increment the
number of enabled elements in that chain.
- removing an enabled group from a chain could disable the
chain.
- removing a disabled group from a chain could enable the
chain.
- add g_assert when internal inconsistency is detected.
- adding an element to a group could increase the number of
links this group has with other groups.
- merging two groups also merges the chains.
- also show group links in the _show method.
2004-05-25 Benjamin Otte <in7y118@public.uni-hamburg.de>
* gst/gstcaps.c: (gst_caps_structure_simplify):

View file

@ -218,6 +218,8 @@ static GstOptSchedulerGroup *remove_from_group (GstOptSchedulerGroup * group,
GstElement * element);
static void group_dec_links_for_element (GstOptSchedulerGroup * group,
GstElement * element);
static void group_inc_links_for_element (GstOptSchedulerGroup * group,
GstElement * element);
static GstOptSchedulerGroup *merge_groups (GstOptSchedulerGroup * group1,
GstOptSchedulerGroup * group2);
static void setup_group_scheduler (GstOptScheduler * osched,
@ -527,6 +529,8 @@ destroy_chain (GstOptSchedulerChain * chain)
static GstOptSchedulerChain *
add_to_chain (GstOptSchedulerChain * chain, GstOptSchedulerGroup * group)
{
gboolean enabled;
GST_LOG ("adding group %p to chain %p", group, chain);
g_assert (group->chain == NULL);
@ -534,13 +538,17 @@ add_to_chain (GstOptSchedulerChain * chain, GstOptSchedulerGroup * group)
group = ref_group (group);
group->chain = ref_chain (chain);
chain->groups = g_slist_prepend (chain->groups, group);
chain->num_groups++;
if (GST_OPT_SCHEDULER_GROUP_IS_ENABLED (group)) {
chain_group_set_enabled (chain, group, TRUE);
enabled = GST_OPT_SCHEDULER_GROUP_IS_ENABLED (group);
if (enabled) {
chain->num_enabled++;
if (chain->num_enabled == chain->num_groups) {
GST_LOG ("enabling chain %p after adding of enabled group", chain);
GST_OPT_SCHEDULER_CHAIN_ENABLE (chain);
}
}
/* queue a resort of the group list, which determines which group will be run
@ -553,6 +561,8 @@ add_to_chain (GstOptSchedulerChain * chain, GstOptSchedulerGroup * group)
static GstOptSchedulerChain *
remove_from_chain (GstOptSchedulerChain * chain, GstOptSchedulerGroup * group)
{
gboolean enabled;
GST_LOG ("removing group %p from chain %p", group, chain);
if (!chain)
@ -561,6 +571,8 @@ remove_from_chain (GstOptSchedulerChain * chain, GstOptSchedulerGroup * group)
g_assert (group);
g_assert (group->chain == chain);
enabled = GST_OPT_SCHEDULER_GROUP_IS_ENABLED (group);
group->chain = NULL;
chain->groups = g_slist_remove (chain->groups, group);
chain->num_groups--;
@ -568,6 +580,24 @@ remove_from_chain (GstOptSchedulerChain * chain, GstOptSchedulerGroup * group)
if (chain->num_groups == 0)
chain = unref_chain (chain);
else {
/* removing an enabled group from the chain decrements the
* enabled counter */
if (enabled) {
chain->num_enabled--;
if (chain->num_enabled == 0) {
GST_LOG ("disabling chain %p after removal of the only enabled group",
chain);
GST_OPT_SCHEDULER_CHAIN_DISABLE (chain);
}
} else {
if (chain->num_enabled == chain->num_groups) {
GST_LOG ("enabling chain %p after removal of the only disabled group",
chain);
GST_OPT_SCHEDULER_CHAIN_ENABLE (chain);
}
}
}
GST_OPT_SCHEDULER_CHAIN_SET_DIRTY (chain);
@ -677,6 +707,8 @@ static void
chain_group_set_enabled (GstOptSchedulerChain * chain,
GstOptSchedulerGroup * group, gboolean enabled)
{
gboolean oldstate;
g_assert (group != NULL);
g_assert (chain != NULL);
@ -684,13 +716,20 @@ chain_group_set_enabled (GstOptSchedulerChain * chain,
("request to %d group %p in chain %p, have %d groups enabled out of %d",
enabled, group, chain, chain->num_enabled, chain->num_groups);
oldstate = (GST_OPT_SCHEDULER_GROUP_IS_ENABLED (group) ? TRUE : FALSE);
if (oldstate == enabled) {
GST_LOG ("group %p in chain %p was in correct state", group, chain);
return;
}
if (enabled)
GST_OPT_SCHEDULER_GROUP_ENABLE (group);
else
GST_OPT_SCHEDULER_GROUP_DISABLE (group);
if (enabled) {
if (chain->num_enabled < chain->num_groups)
g_assert (chain->num_enabled < chain->num_groups);
chain->num_enabled++;
GST_DEBUG ("enable group %p in chain %p, now %d groups enabled out of %d",
@ -705,9 +744,9 @@ chain_group_set_enabled (GstOptSchedulerChain * chain,
GST_OPT_SCHEDULER_CHAIN_ENABLE (chain);
}
} else {
if (chain->num_enabled > 0)
chain->num_enabled--;
g_assert (chain->num_enabled > 0);
chain->num_enabled--;
GST_DEBUG ("disable group %p in chain %p, now %d groups enabled out of %d",
group, chain, chain->num_enabled, chain->num_groups);
@ -823,6 +862,10 @@ add_to_group (GstOptSchedulerGroup * group, GstElement * element)
g_assert (GST_ELEMENT_SCHED_GROUP (element) == NULL);
/* first increment the links that this group has with other groups through
* this element */
group_inc_links_for_element (group, element);
/* Ref the group... */
GST_ELEMENT_SCHED_GROUP (element) = ref_group (group);
@ -893,6 +936,9 @@ merge_groups (GstOptSchedulerGroup * group1, GstOptSchedulerGroup * group2)
if (group1 == group2 || group2 == NULL)
return group1;
/* make sure they end up in the same chain */
merge_chains (group1->chain, group2->chain);
while (group2 && group2->elements) {
GstElement *element = (GstElement *) group2->elements->data;
@ -2092,8 +2138,8 @@ group_can_reach_group (GstOptSchedulerGroup * group,
/*
* Go through all the pads of the given element and decrement the links that
* this group has with the group of the element. This function is mainly used
* to update the group connections before we remove element from the group.
* this group has with the group of the peer element. This function is mainly used
* to update the group connections before we remove the element from the group.
*/
static void
group_dec_links_for_element (GstOptSchedulerGroup * group, GstElement * element)
@ -2112,6 +2158,28 @@ group_dec_links_for_element (GstOptSchedulerGroup * group, GstElement * element)
}
}
/*
* Go through all the pads of the given element and increment the links that
* this group has with the group of the peer element. This function is mainly used
* to update the group connections before we add the element to the group.
*/
static void
group_inc_links_for_element (GstOptSchedulerGroup * group, GstElement * element)
{
GList *l;
GstPad *pad;
GstOptSchedulerGroup *peer_group;
for (l = GST_ELEMENT_PADS (element); l; l = l->next) {
pad = (GstPad *) l->data;
if (GST_IS_REAL_PAD (pad) && GST_PAD_PEER (pad)) {
get_group (GST_PAD_PARENT (GST_PAD_PEER (pad)), &peer_group);
if (peer_group && peer_group != group)
group_inc_link (group, peer_group);
}
}
}
static void
gst_opt_scheduler_pad_unlink (GstScheduler * sched,
GstPad * srcpad, GstPad * sinkpad)
@ -2292,6 +2360,8 @@ gst_opt_scheduler_iterate (GstScheduler * sched)
osched->state = GST_OPT_SCHEDULER_STATE_RUNNING;
/* gst_opt_scheduler_show (sched); */
GST_DEBUG_OBJECT (sched, "iterating");
while (iterations) {
@ -2309,6 +2379,8 @@ gst_opt_scheduler_iterate (GstScheduler * sched)
GST_LOG ("scheduling chain %p", chain);
schedule_chain (chain);
scheduled = TRUE;
} else {
GST_LOG ("not scheduling disabled chain %p", chain);
}
/* don't schedule any more chains when in error */
@ -2370,6 +2442,7 @@ gst_opt_scheduler_show (GstScheduler * sched)
while (groups) {
GstOptSchedulerGroup *group = (GstOptSchedulerGroup *) groups->data;
GSList *elements = group->elements;
GSList *group_links = group->group_links;
groups = g_slist_next (groups);
@ -2388,6 +2461,15 @@ gst_opt_scheduler_show (GstScheduler * sched)
g_print (" +- element %s\n", GST_ELEMENT_NAME (element));
}
while (group_links) {
GstOptSchedulerGroupLink *link =
(GstOptSchedulerGroupLink *) group_links->data;
group_links = g_slist_next (group_links);
g_print ("group link %p between %p and %p, count %d\n",
link, link->src, link->sink, link->count);
}
}
}
}