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repository: drop the_index variable

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All users of `the_index` have been converted to use either a custom
`struct index_state *` or the index provided by `the_repository`. We can
thus drop the globally-accessible declaration of this variable. In fact,
we can go further than that and drop `the_index` completely now and have
it be allocated dynamically in `initialize_repository()` as all the
other data structures in it are.

This concludes the quest to make Git `the_index` free, which has started
with 4aab5b46f4 (Make read-cache.c "the_index" free., 2007-04-01).

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt 2024-04-18 14:14:29 +02:00 committed by Junio C Hamano
parent 9ee6d63bab
commit 19fa8cd48c
2 changed files with 6 additions and 22 deletions
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25
repository.c
View file

@ -1,8 +1,3 @@
/*
* not really _using_ the compat macros, just make sure the_index
* declaration matches the definition in this file.
*/
#define USE_THE_INDEX_VARIABLE
#include "git-compat-util.h"
#include "abspath.h"
#include "repository.h"
@ -23,22 +18,20 @@
/* The main repository */
static struct repository the_repo;
struct repository *the_repository;
struct index_state the_index;
static void initialize_repository(struct repository *repo,
struct index_state *index)
static void initialize_repository(struct repository *repo)
{
repo->index = index;
repo->objects = raw_object_store_new();
repo->remote_state = remote_state_new();
repo->parsed_objects = parsed_object_pool_new();
index_state_init(index, repo);
ALLOC_ARRAY(repo->index, 1);
index_state_init(repo->index, repo);
}
void initialize_the_repository(void)
{
the_repository = &the_repo;
initialize_repository(the_repository, &the_index);
initialize_repository(the_repository);
repo_set_hash_algo(&the_repo, GIT_HASH_SHA1);
}
@ -191,12 +184,7 @@ int repo_init(struct repository *repo,
struct repository_format format = REPOSITORY_FORMAT_INIT;
memset(repo, 0, sizeof(*repo));
if (repo == the_repository) {
initialize_repository(the_repository, &the_index);
} else {
ALLOC_ARRAY(repo->index, 1);
initialize_repository(repo, repo->index);
}
initialize_repository(repo);
if (repo_init_gitdir(repo, gitdir))
goto error;
@ -313,8 +301,7 @@ void repo_clear(struct repository *repo)
if (repo->index) {
discard_index(repo->index);
if (repo->index != &the_index)
FREE_AND_NULL(repo->index);
FREE_AND_NULL(repo->index);
}
if (repo->promisor_remote_config) {

3
repository.h
View file

@ -187,9 +187,6 @@ struct repository {
};
extern struct repository *the_repository;
#ifdef USE_THE_INDEX_VARIABLE
extern struct index_state the_index;
#endif
/*
* Define a custom repository layout. Any field can be NULL, which