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environment: move "pack_compression_level" into struct repo_config_values

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The `pack_compression_level` configuration is currently stored in the
global variable `pack_compression_level`, which makes it shared across
repository instances within a single process.

Store it instead in `repo_config_values`, where eagerly‑parsed
repository configuration lives. `pack_compression_level` is parsed
eagerly because it influences packfile compression, a core operation
where a lazy parse could cause inconsistent behavior and hamper
libification. This preserves the existing eager‑parsing behavior while
tying the value to the repository from which it was read, avoiding
cross‑repository state leakage and continuing the effort to reduce
reliance on global configuration state.

Update all references to use `repo_config_values()`.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Signed-off-by: Olamide Caleb Bello <belkid98@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Olamide Caleb Bello
2026-06-02 18:09:17 +01:00
committed by Junio C Hamano
parent e0f86540ab
commit 8cd7402acc
5 changed files with 23 additions and 15 deletions
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object-file.c
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@@ -1437,8 +1437,9 @@ static int stream_blob_to_pack(struct transaction_packfile *state,
int status = Z_OK;
int write_object = (flags & INDEX_WRITE_OBJECT);
off_t offset = 0;
struct repo_config_values *cfg = repo_config_values(the_repository);
git_deflate_init(&s, pack_compression_level);
git_deflate_init(&s, cfg->pack_compression_level);
hdrlen = encode_in_pack_object_header(obuf, sizeof(obuf), OBJ_BLOB, size);
s.next_out = obuf + hdrlen;