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authormarha <marha@users.sourceforge.net>2011-10-05 17:37:34 +0200
committermarha <marha@users.sourceforge.net>2011-10-05 17:37:34 +0200
commitf7025b4baa1ba35ee796785641f04eac5bedb0a6 (patch)
tree3df62b7b501a478e212397883657a8a8be4db7a3 /mesalib/src/mesa/program/hash_table.c
parent60adbfdea1ee754341d64454274e7aa83bae8971 (diff)
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mkfontscale pixman xserver xtrans libX11 libXdmcp libxcb libXmu mesa git update 5 oct 2011
Diffstat (limited to 'mesalib/src/mesa/program/hash_table.c')
-rw-r--r--mesalib/src/mesa/program/hash_table.c39
1 files changed, 32 insertions, 7 deletions
diff --git a/mesalib/src/mesa/program/hash_table.c b/mesalib/src/mesa/program/hash_table.c
index 877a9e2ff..dc8563a33 100644
--- a/mesalib/src/mesa/program/hash_table.c
+++ b/mesalib/src/mesa/program/hash_table.c
@@ -108,8 +108,8 @@ hash_table_clear(struct hash_table *ht)
}
-void *
-hash_table_find(struct hash_table *ht, const void *key)
+static struct hash_node *
+get_node(struct hash_table *ht, const void *key)
{
const unsigned hash_value = (*ht->hash)(key);
const unsigned bucket = hash_value % ht->num_buckets;
@@ -119,13 +119,20 @@ hash_table_find(struct hash_table *ht, const void *key)
struct hash_node *hn = (struct hash_node *) node;
if ((*ht->compare)(hn->key, key) == 0) {
- return hn->data;
+ return hn;
}
}
return NULL;
}
+void *
+hash_table_find(struct hash_table *ht, const void *key)
+{
+ struct hash_node *hn = get_node(ht, key);
+
+ return (hn == NULL) ? NULL : hn->data;
+}
void
hash_table_insert(struct hash_table *ht, void *data, const void *key)
@@ -143,21 +150,39 @@ hash_table_insert(struct hash_table *ht, void *data, const void *key)
}
void
-hash_table_remove(struct hash_table *ht, const void *key)
+hash_table_replace(struct hash_table *ht, void *data, const void *key)
{
const unsigned hash_value = (*ht->hash)(key);
const unsigned bucket = hash_value % ht->num_buckets;
struct node *node;
+ struct hash_node *hn;
foreach(node, & ht->buckets[bucket]) {
- struct hash_node *hn = (struct hash_node *) node;
+ hn = (struct hash_node *) node;
if ((*ht->compare)(hn->key, key) == 0) {
- remove_from_list(node);
- free(node);
+ hn->data = data;
return;
}
}
+
+ hn = calloc(1, sizeof(*hn));
+
+ hn->data = data;
+ hn->key = key;
+
+ insert_at_head(& ht->buckets[bucket], & hn->link);
+}
+
+void
+hash_table_remove(struct hash_table *ht, const void *key)
+{
+ struct node *node = (struct node *) get_node(ht, key);
+ if (node != NULL) {
+ remove_from_list(node);
+ free(node);
+ return;
+ }
}
void