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info: fix performance issue with registering categories after gst_init()

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When registering a new debug category after gst_init(), simply check
the existing patterns against that new category.

No need to iterate over all categories and recheck them all against
the existing patterns.

Also, no need to re-parse the existing pattern string set via GST_DEBUG
and add the same set of match patterns all over again to the existing
list of match patterns every time we register a new debug category.

Combined with iterating all debug categories on a change this would
make adding debug categories after gst_init() very very very slow.
This commit is contained in:
Tim-Philipp Müller 2017-12-02 12:22:47 +00:00
parent 4bb5da9c28
commit 67e9d13950
1 changed files with 13 additions and 1 deletions
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14
gst/gstinfo.c
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@ -1692,6 +1692,18 @@ gst_debug_unset_threshold_for_name (const gchar * name)
gst_debug_reset_all_thresholds ();
}
static void
gst_debug_apply_patterns_to_category (GstDebugCategory * cat)
{
GSList *l;
g_mutex_lock (&__level_name_mutex);
for (l = __level_name; l != NULL; l = l->next) {
for_each_threshold_by_entry (cat, (LevelNameEntry *) l->data);
}
g_mutex_unlock (&__level_name_mutex);
}
GstDebugCategory *
_gst_debug_category_new (const gchar * name, guint color,
const gchar * description)
@ -1726,7 +1738,7 @@ _gst_debug_category_new (const gchar * name, guint color,
/* ensure the filter is applied to categories registered after _debug_init */
if (_gst_debug_filter) {
gst_debug_set_threshold_from_string (_gst_debug_filter, FALSE);
gst_debug_apply_patterns_to_category (cat);
}
return cat;