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read-tree: teach 1-way merege and plain read to prime cache-tree.

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This teaches read-tree to fully populate valid cache-tree when
reading a tree from scratch, or reading a single tree into an
existing index, reusing only the cached stat information (i.e.
one-way merge).  We have already taught update-index about cache-tree,
so "git checkout" followed by updates to a few path followed by
a "git commit" would become very efficient.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano
2006-04-27 01:33:07 -07:00
parent b34c39cf31
commit 7927a55d5b
3 changed files with 54 additions and 3 deletions
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1
cache-tree.h
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@ -20,6 +20,7 @@ struct cache_tree {
struct cache_tree *cache_tree(void);
void cache_tree_free(struct cache_tree **);
void cache_tree_invalidate_path(struct cache_tree *, const char *);
struct cache_tree_sub *cache_tree_sub(struct cache_tree *, const char *);
void *cache_tree_write(struct cache_tree *root, unsigned long *size_p);
struct cache_tree *cache_tree_read(const char *buffer, unsigned long size);