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refs: move submodule code out of files-backend.c

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files-backend is now initialized with a $GIT_DIR. Converting a submodule
path to where real submodule gitdir is located is done in get_ref_store().

This gives a slight performance improvement for submodules since we
don't convert submodule path to gitdir at every backend call like
before. We pay that once at ref-store creation.

More cleanup in files_downcast() and files_assert_main_repository()
follows shortly. It's separate to keep noises from this patch.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy
2017-03-26 09:42:31 +07:00
committed by Junio C Hamano
parent bbbb7de7ac
commit 5d0bc90e5d
3 changed files with 20 additions and 32 deletions
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9
refs/refs-internal.h
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@ -482,12 +482,11 @@ struct ref_store;
/* refs backends */
/*
* Initialize the ref_store for the specified submodule, or for the
* main repository if submodule == NULL. These functions should call
* base_ref_store_init() to initialize the shared part of the
* ref_store and to record the ref_store for later lookup.
* Initialize the ref_store for the specified gitdir. These functions
* should call base_ref_store_init() to initialize the shared part of
* the ref_store and to record the ref_store for later lookup.
*/
typedef struct ref_store *ref_store_init_fn(const char *submodule);
typedef struct ref_store *ref_store_init_fn(const char *gitdir);
typedef int ref_init_db_fn(struct ref_store *refs, struct strbuf *err);