Remove "tree->entries" tree-entry list from tree parser

Instead, just use the tree buffer directly, and use the tree-walk
infrastructure to walk the buffers instead of the tree-entry list.

The tree-entry list is inefficient, and generates tons of small
allocations for no good reason. The tree-walk infrastructure is
generally no harder to use than following a linked list, and allows
us to do most tree parsing in-place.

Some programs still use the old tree-entry lists, and are a bit
painful to convert without major surgery. For them we have a helper
function that creates a temporary tree-entry list on demand.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/tree.h b/tree.h
index a27bae4..c7b5248 100644
--- a/tree.h
+++ b/tree.h
@@ -20,9 +20,11 @@ struct tree {
 	struct object object;
 	void *buffer;
 	unsigned long size;
-	struct tree_entry_list *entries;
 };
 
+struct tree_entry_list *create_tree_entry_list(struct tree *);
+void free_tree_entry_list(struct tree_entry_list *);
+
 struct tree *lookup_tree(const unsigned char *sha1);
 
 int parse_tree_buffer(struct tree *item, void *buffer, unsigned long size);