cache API: add a "INDEX_STATE_INIT" macro/function, add release_index()

Hopefully in some not so distant future, we'll get advantages from always
initializing the "repo" member of the "struct index_state". To make
that easier let's introduce an initialization macro & function.

The various ad-hoc initialization of the structure can then be changed
over to it, and we can remove the various "0" assignments in
discard_index() in favor of calling index_state_init() at the end.

While not strictly necessary, let's also change the CALLOC_ARRAY() of
various "struct index_state *" to use an ALLOC_ARRAY() followed by
index_state_init() instead.

We're then adding the release_index() function and converting some
callers (including some of these allocations) over to it if they
either won't need to use their "struct index_state" again, or are just
about to call index_state_init().

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ævar Arnfjörð Bjarmason
2023-01-12 13:55:27 +01:00
committed by Junio C Hamano
parent 5bdf6d4ac0
commit 2f6b1eb794
12 changed files with 52 additions and 30 deletions

View File

@ -361,7 +361,7 @@ static int run_dir_diff(const char *extcmd, int symlinks, const char *prefix,
struct hashmap symlinks2 = HASHMAP_INIT(pair_cmp, NULL);
struct hashmap_iter iter;
struct pair_entry *entry;
struct index_state wtindex = { 0 };
struct index_state wtindex = INDEX_STATE_INIT;
struct checkout lstate, rstate;
int err = 0;
struct child_process cmd = CHILD_PROCESS_INIT;