From: Eric Anholt <eric@anholt.net>
Date: Wed, 23 Mar 2011 19:05:56 +0000 (-0700)
Subject: hash_table: Add an iterator for doing things like cleanup of the HT.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b061b5ffb055c64ffc45e506bad877f47942ba01;p=mesa.git

hash_table: Add an iterator for doing things like cleanup of the HT.

Without this, consumers often have to keep linked lists of the
entries, at additional malloc cost.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
---

diff --git a/src/mesa/program/hash_table.c b/src/mesa/program/hash_table.c
index f7ef366c1a0..877a9e2ffc3 100644
--- a/src/mesa/program/hash_table.c
+++ b/src/mesa/program/hash_table.c
@@ -160,6 +160,25 @@ hash_table_remove(struct hash_table *ht, const void *key)
     }
 }
 
+void
+hash_table_call_foreach(struct hash_table *ht,
+			void (*callback)(const void *key,
+					 void *data,
+					 void *closure),
+			void *closure)
+{
+   int bucket;
+
+   for (bucket = 0; bucket < ht->num_buckets; bucket++) {
+      struct node *node, *temp;
+      foreach_s(node, temp, &ht->buckets[bucket]) {
+	 struct hash_node *hn = (struct hash_node *) node;
+
+	 callback(hn->key, hn->data, closure);
+      }
+   }
+}
+
 unsigned
 hash_table_string_hash(const void *key)
 {
diff --git a/src/mesa/program/hash_table.h b/src/mesa/program/hash_table.h
index f1c4fdcd1fa..e715bb1cc62 100644
--- a/src/mesa/program/hash_table.h
+++ b/src/mesa/program/hash_table.h
@@ -144,6 +144,13 @@ hash_table_pointer_hash(const void *key);
 int
 hash_table_pointer_compare(const void *key1, const void *key2);
 
+void
+hash_table_call_foreach(struct hash_table *ht,
+			void (*callback)(const void *key,
+					 void *data,
+					 void *closure),
+			void *closure);
+
 #ifdef __cplusplus
 }
 #endif