diff mbox series

[1/4] midx.c: extract MIDX lookup by object_dir

Message ID ecb454233a4fcc88e1ca142b633a5785b6776a2e.1633729502.git.me@ttaylorr.com (mailing list archive)
State New, archived
Headers show
Series midx: avoid potential rename-while-mapped on Windows | expand

Commit Message

Taylor Blau Oct. 8, 2021, 9:46 p.m. UTC
The first thing that write_midx_internal() does is load the MIDX
corresponding to the given object directory, if one is present.

Prepare for other functions in midx.c to do the same thing by extracting
that operation out to a small helper function.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
---
 midx.c | 27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/midx.c b/midx.c
index 18a4f25aa3..b66b75a3cd 100644
--- a/midx.c
+++ b/midx.c
@@ -1118,6 +1118,22 @@  static int write_midx_bitmap(char *midx_name, unsigned char *midx_hash,
 	return ret;
 }
 
+static struct multi_pack_index *lookup_multi_pack_index(struct repository *r,
+							const char *object_dir)
+{
+	struct multi_pack_index *cur;
+
+	/* Ensure the given object_dir is local, or a known alternate. */
+	find_odb(r, object_dir);
+
+	for (cur = get_multi_pack_index(r); cur; cur = cur->next) {
+		if (!strcmp(object_dir, cur->object_dir))
+			return cur;
+	}
+
+	return NULL;
+}
+
 static int write_midx_internal(const char *object_dir,
 			       struct string_list *packs_to_include,
 			       struct string_list *packs_to_drop,
@@ -1131,15 +1147,11 @@  static int write_midx_internal(const char *object_dir,
 	struct hashfile *f = NULL;
 	struct lock_file lk;
 	struct write_midx_context ctx = { 0 };
-	struct multi_pack_index *cur;
 	int pack_name_concat_len = 0;
 	int dropped_packs = 0;
 	int result = 0;
 	struct chunkfile *cf;
 
-	/* Ensure the given object_dir is local, or a known alternate. */
-	find_odb(the_repository, object_dir);
-
 	midx_name = get_midx_filename(object_dir);
 	if (safe_create_leading_directories(midx_name))
 		die_errno(_("unable to create leading directories of %s"),
@@ -1151,12 +1163,7 @@  static int write_midx_internal(const char *object_dir,
 		 * packs to include, since all packs and objects are copied
 		 * blindly from an existing MIDX if one is present.
 		 */
-		for (cur = get_multi_pack_index(the_repository); cur; cur = cur->next) {
-			if (!strcmp(object_dir, cur->object_dir)) {
-				ctx.m = cur;
-				break;
-			}
-		}
+		ctx.m = lookup_multi_pack_index(the_repository, object_dir);
 	}
 
 	if (ctx.m && !midx_checksum_valid(ctx.m)) {