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ref-cache: introduce a new type, ref_cache

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For now, it just wraps a `ref_entry *` that points at the root of the
tree. Soon it will hold more information.

Add two new functions, `create_ref_cache()` and `free_ref_cache()`.
Make `free_ref_entry()` private.

Change files-backend to use this type to hold its caches.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty
2017-04-16 08:41:32 +02:00
committed by Junio C Hamano
parent 958f964691
commit 7c22bc8a18
3 changed files with 46 additions and 13 deletions
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15
refs/ref-cache.h
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@ -1,6 +1,10 @@
#ifndef REFS_REF_CACHE_H
#define REFS_REF_CACHE_H
struct ref_cache {
struct ref_entry *root;
};
/*
* Information used (along with the information in ref_entry) to
* describe a single cached reference. This data structure only
@ -165,7 +169,16 @@ struct ref_entry *create_ref_entry(const char *refname,
const unsigned char *sha1, int flag,
int check_name);
void free_ref_entry(struct ref_entry *entry);
/*
* Return a pointer to a new `ref_cache`. Its top-level starts out
* marked incomplete.
*/
struct ref_cache *create_ref_cache(struct files_ref_store *refs);
/*
* Free the `ref_cache` and all of its associated data.
*/
void free_ref_cache(struct ref_cache *cache);
/*
* Add a ref_entry to the end of dir (unsorted). Entry is always