diff options
Diffstat (limited to 'src/mesa/main')
-rw-r--r-- | src/mesa/main/hash.c | 28 | ||||
-rw-r--r-- | src/mesa/main/hash.h | 3 |
2 files changed, 31 insertions, 0 deletions
diff --git a/src/mesa/main/hash.c b/src/mesa/main/hash.c index 6591af9a69a..b31fd483906 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 142d2842c33..b34f32848a5 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), |