V2: const qualify table parameter
Signed-off-by: Timothy Arceri t_arc...@yahoo.com.au
---
src/mesa/main/hash.c | 28
src/mesa/main/hash.h |3 +++
2 files changed, 31 insertions(+)
diff --git a/src/mesa/main/hash.c b/src/mesa/main/hash.c
index 6591af9..b31fd48 100644
--- a/src/mesa/main/hash.c
+++ b/src/mesa/main/hash.c
@@ -302,6 +302,34 @@ _mesa_HashDeleteAll(struct _mesa_HashTable *table,
/**
+ * Clone all entries in a hash table, into a new table.
+ *
+ * \param table the hash table to clone
+ */
+struct _mesa_HashTable *
+_mesa_HashClone(const struct _mesa_HashTable *table)
+{
+ /* cast-away const */
+ struct _mesa_HashTable *table2 = (struct _mesa_HashTable *) table;
+ struct hash_entry *entry;
+ struct _mesa_HashTable *clonetable;
+
+ ASSERT(table);
+ _glthread_LOCK_MUTEX(table2-Mutex);
+
+ clonetable = _mesa_NewHashTable();
+ assert(clonetable);
+ hash_table_foreach(table-ht, entry) {
+ _mesa_HashInsert(clonetable, (GLint)(uintptr_t)entry-key, entry-data);
+ }
+
+ _glthread_UNLOCK_MUTEX(table2-Mutex);
+
+ return clonetable;
+}
+
+
+/**
* Walk over all entries in a hash table, calling callback function for each.
* Note: we use a separate mutex in this function to avoid a recursive
* locking deadlock (in case the callback calls _mesa_HashRemove()) and to
diff --git a/src/mesa/main/hash.h b/src/mesa/main/hash.h
index 142d284..b34f328 100644
--- a/src/mesa/main/hash.h
+++ b/src/mesa/main/hash.h
@@ -50,6 +50,9 @@ _mesa_HashDeleteAll(struct _mesa_HashTable *table,
void (*callback)(GLuint key, void *data, void *userData),
void *userData);
+extern struct _mesa_HashTable *
+_mesa_HashClone(const struct _mesa_HashTable *table);
+
extern void
_mesa_HashWalk(const struct _mesa_HashTable *table,
void (*callback)(GLuint key, void *data, void *userData),
--
1.7.9.5
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