diff options
Diffstat (limited to 'lib/cache.c')
| -rw-r--r-- | lib/cache.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/cache.c b/lib/cache.c index a1c8eae..814c616 100644 --- a/lib/cache.c +++ b/lib/cache.c @@ -288,6 +288,36 @@ struct nl_cache *nl_cache_subset(struct nl_cache *orig, } /** + * Allocate new cache and copy the contents of an existing cache + * @arg cache Original cache to base new cache on + * + * Allocates a new cache matching the type of the cache specified by + * \p cache. Iterates over the \p cache cache and copies all objects + * to the new cache. + * + * The copied objects are clones but do not contain a reference to each + * other. Later modifications to objects in the original cache will + * not affect objects in the new cache. + * + * @return A newly allocated cache or NULL. + */ +struct nl_cache *nl_cache_clone(struct nl_cache *cache) +{ + struct nl_cache_ops *ops = nl_cache_get_ops(cache); + struct nl_cache *clone; + struct nl_object *obj; + + clone = nl_cache_alloc(ops); + if (!clone) + return NULL; + + nl_list_for_each_entry(obj, &cache->c_items, ce_list) + nl_cache_add(clone, obj); + + return clone; +} + +/** * Remove all objects of a cache. * @arg cache Cache to clear * |