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Use pre-split element classes and pseudo-classes to optimize matching

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In my testing this cuts the longest time to dispatch(), when showing the
calendar menu for the first time, from 604 to 442 milliseconds,
while reducing additional_selector_matches_style() from 32% to 13% of
CPU time used.

Bug: https://bugzilla.gnome.org/show_bug.cgi?id=687465
Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
This commit is contained in:
Simon McVittie 2012-11-08 15:41:31 +00:00
parent c4f6619fbd
commit 5ae2f87ce9
1 changed files with 17 additions and 28 deletions
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45
src/st/st-theme.c
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@ -448,28 +448,20 @@ st_theme_new (const char *application_stylesheet,
static gboolean
string_in_list (GString *stryng,
const char *list)
GStrv list)
{
char *cur;
char *l = g_strdup (list);
char *temp;
gboolean found = FALSE;
gchar **it;
cur = strtok_r (l, " \t\f\r\n", &temp);
while (cur != NULL)
if (list == NULL)
return FALSE;
for (it = list; *it != NULL; it++)
{
if (!strqcmp (cur, stryng->str, stryng->len))
{
found = TRUE;
goto out;
}
cur = strtok_r (NULL, " \t\f\r\n", &temp);
if (!strqcmp (*it, stryng->str, stryng->len))
return TRUE;
}
out:
g_free (l);
return found;
return FALSE;
}
static gboolean
@ -477,7 +469,7 @@ pseudo_class_add_sel_matches_style (StTheme *a_this,
CRAdditionalSel *a_add_sel,
StThemeNode *a_node)
{
const char *node_pseudo_class;
GStrv node_pseudo_classes;
g_return_val_if_fail (a_this
&& a_add_sel
@ -487,12 +479,10 @@ pseudo_class_add_sel_matches_style (StTheme *a_this,
&& a_add_sel->content.pseudo->name->stryng->str
&& a_node, FALSE);
node_pseudo_class = st_theme_node_get_pseudo_class (a_node);
node_pseudo_classes = st_theme_node_get_pseudo_classes (a_node);
if (node_pseudo_class == NULL)
return FALSE;
return string_in_list (a_add_sel->content.pseudo->name->stryng, node_pseudo_class);
return string_in_list (a_add_sel->content.pseudo->name->stryng,
node_pseudo_classes);
}
/**
@ -507,7 +497,7 @@ static gboolean
class_add_sel_matches_style (CRAdditionalSel *a_add_sel,
StThemeNode *a_node)
{
const char *element_class;
GStrv element_classes;
g_return_val_if_fail (a_add_sel
&& a_add_sel->type == CLASS_ADD_SELECTOR
@ -516,11 +506,10 @@ class_add_sel_matches_style (CRAdditionalSel *a_add_sel,
&& a_add_sel->content.class_name->stryng->str
&& a_node, FALSE);
element_class = st_theme_node_get_element_class (a_node);
if (element_class == NULL)
return FALSE;
element_classes = st_theme_node_get_element_classes (a_node);
return string_in_list (a_add_sel->content.class_name->stryng, element_class);
return string_in_list (a_add_sel->content.class_name->stryng,
element_classes);
}
/*