[PATCH v2 04/16] odb: move packfile map into `struct packfile_store`

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The object database tracks a map of packfiles by their respective paths,
which is used to figure out whether a given packfile has already been
loaded.With the introduction of the `struct packfile_store` we have a
better place to host this list though.

Move the map accordingly. `pack_map_entry_cmp()` isn't used anywhere but
in "packfile.c" anymore after this change, so we convert it to a static
function, as well.

Signed-off-by: Patrick Steinhardt <ps@xxxxxx>
---
 midx.c     |  2 +-
 odb.c      |  2 --
 odb.h      |  6 ------
 packfile.c | 20 ++++++++++++++++++--
 packfile.h | 20 ++++++--------------
 5 files changed, 25 insertions(+), 25 deletions(-)

diff --git a/midx.c b/midx.c
index 7d407682e6..7f3f74ef2b 100644
--- a/midx.c
+++ b/midx.c
@@ -471,7 +471,7 @@ int prepare_midx_pack(struct repository *r, struct multi_pack_index *m,
 	strbuf_addbuf(&key, &pack_name);
 	strbuf_strip_suffix(&key, ".idx");
 	strbuf_addstr(&key, ".pack");
-	p = hashmap_get_entry_from_hash(&r->objects->pack_map,
+	p = hashmap_get_entry_from_hash(&r->objects->packfiles->map,
 					strhash(key.buf), key.buf,
 					struct packed_git, packmap_ent);
 	if (!p) {
diff --git a/odb.c b/odb.c
index 17a9135cbd..568c820ef8 100644
--- a/odb.c
+++ b/odb.c
@@ -998,7 +998,6 @@ struct object_database *odb_new(struct repository *repo)
 	o->repo = repo;
 	o->packfiles = packfile_store_new(o);
 	INIT_LIST_HEAD(&o->packed_git_mru);
-	hashmap_init(&o->pack_map, pack_map_entry_cmp, NULL, 0);
 	pthread_mutex_init(&o->replace_mutex, NULL);
 	string_list_init_dup(&o->submodule_source_paths);
 	return o;
@@ -1040,6 +1039,5 @@ void odb_clear(struct object_database *o)
 	close_object_store(o);
 	packfile_store_free(o->packfiles);
 
-	hashmap_clear(&o->pack_map);
 	string_list_clear(&o->submodule_source_paths, 0);
 }
diff --git a/odb.h b/odb.h
index 98e038fa73..fb37c6ebce 100644
--- a/odb.h
+++ b/odb.h
@@ -147,12 +147,6 @@ struct object_database {
 	struct cached_object_entry *cached_objects;
 	size_t cached_object_nr, cached_object_alloc;
 
-	/*
-	 * A map of packfiles to packed_git structs for tracking which
-	 * packs have been loaded already.
-	 */
-	struct hashmap pack_map;
-
 	/*
 	 * A fast, rough count of the number of objects in the repository.
 	 * These two fields are not meant for direct access. Use
diff --git a/packfile.c b/packfile.c
index 17f770e0e0..752a0cee8d 100644
--- a/packfile.c
+++ b/packfile.c
@@ -788,7 +788,7 @@ void install_packed_git(struct repository *r, struct packed_git *pack)
 	r->objects->packfiles->packs = pack;
 
 	hashmap_entry_init(&pack->packmap_ent, strhash(pack->pack_name));
-	hashmap_add(&r->objects->pack_map, &pack->packmap_ent);
+	hashmap_add(&r->objects->packfiles->map, &pack->packmap_ent);
 }
 
 void (*report_garbage)(unsigned seen_bits, const char *path);
@@ -901,7 +901,7 @@ static void prepare_pack(const char *full_name, size_t full_name_len,
 		hashmap_entry_init(&hent, hash);
 
 		/* Don't reopen a pack we already have. */
-		if (!hashmap_get(&data->r->objects->pack_map, &hent, pack_name)) {
+		if (!hashmap_get(&data->r->objects->packfiles->map, &hent, pack_name)) {
 			p = add_packed_git(data->r, full_name, full_name_len, data->local);
 			if (p)
 				install_packed_git(data->r, p);
@@ -2329,11 +2329,26 @@ int parse_pack_header_option(const char *in, unsigned char *out, unsigned int *l
 	return 0;
 }
 
+static int pack_map_entry_cmp(const void *cmp_data UNUSED,
+			      const struct hashmap_entry *entry,
+			      const struct hashmap_entry *entry2,
+			      const void *keydata)
+{
+	const char *key = keydata;
+	const struct packed_git *pg1, *pg2;
+
+	pg1 = container_of(entry, const struct packed_git, packmap_ent);
+	pg2 = container_of(entry2, const struct packed_git, packmap_ent);
+
+	return strcmp(pg1->pack_name, key ? key : pg2->pack_name);
+}
+
 struct packfile_store *packfile_store_new(struct object_database *odb)
 {
 	struct packfile_store *store;
 	CALLOC_ARRAY(store, 1);
 	store->odb = odb;
+	hashmap_init(&store->map, pack_map_entry_cmp, NULL, 0);
 	return store;
 }
 
@@ -2346,6 +2361,7 @@ void packfile_store_free(struct packfile_store *store)
 		free(p);
 	}
 
+	hashmap_clear(&store->map);
 	free(store);
 }
 
diff --git a/packfile.h b/packfile.h
index cf81091175..9bbef51164 100644
--- a/packfile.h
+++ b/packfile.h
@@ -64,6 +64,12 @@ struct packfile_store {
 	 */
 	struct packed_git *packs;
 
+	/*
+	 * A map of packfile names to packed_git structs for tracking which
+	 * packs have been loaded already.
+	 */
+	struct hashmap map;
+
 	/*
 	 * Whether packfiles have already been populated with this store's
 	 * packs.
@@ -89,20 +95,6 @@ void packfile_store_free(struct packfile_store *store);
  */
 void packfile_store_close(struct packfile_store *store);
 
-static inline int pack_map_entry_cmp(const void *cmp_data UNUSED,
-				     const struct hashmap_entry *entry,
-				     const struct hashmap_entry *entry2,
-				     const void *keydata)
-{
-	const char *key = keydata;
-	const struct packed_git *pg1, *pg2;
-
-	pg1 = container_of(entry, const struct packed_git, packmap_ent);
-	pg2 = container_of(entry2, const struct packed_git, packmap_ent);
-
-	return strcmp(pg1->pack_name, key ? key : pg2->pack_name);
-}
-
 struct pack_window {
 	struct pack_window *next;
 	unsigned char *base;

-- 
2.51.0.261.g7ce5a0a67e.dirty





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