object-store: move packed_git and packed_git_mru to object store

In a process with multiple repositories open, packfile accessors
should be associated to a single repository and not shared globally.
Move packed_git and packed_git_mru into the_repository and adjust
callers to reflect this.

[nd: while at there, wrap access to these two fields in get_packed_git()
and get_packed_git_mru(). This allows us to lazily initialize these
fields without caller doing that explicitly]

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/object-store.h b/object-store.h
index 0b4db58..c687ab7 100644
--- a/object-store.h
+++ b/object-store.h
@@ -52,6 +52,30 @@ void add_to_alternates_memory(const char *dir);
  */
 struct strbuf *alt_scratch_buf(struct alternate_object_database *alt);
 
+struct packed_git {
+	struct packed_git *next;
+	struct list_head mru;
+	struct pack_window *windows;
+	off_t pack_size;
+	const void *index_data;
+	size_t index_size;
+	uint32_t num_objects;
+	uint32_t num_bad_objects;
+	unsigned char *bad_object_sha1;
+	int index_version;
+	time_t mtime;
+	int pack_fd;
+	unsigned pack_local:1,
+		 pack_keep:1,
+		 freshened:1,
+		 do_not_close:1,
+		 pack_promisor:1;
+	unsigned char sha1[20];
+	struct revindex_entry *revindex;
+	/* something like ".git/objects/pack/xxxxx.pack" */
+	char pack_name[FLEX_ARRAY]; /* more */
+};
+
 struct raw_object_store {
 	/*
 	 * Path to the repository's object store.
@@ -64,6 +88,16 @@ struct raw_object_store {
 
 	struct alternate_object_database *alt_odb_list;
 	struct alternate_object_database **alt_odb_tail;
+
+	/*
+	 * private data
+	 *
+	 * should only be accessed directly by packfile.c
+	 */
+
+	struct packed_git *packed_git;
+	/* A most-recently-used ordered version of the packed_git list. */
+	struct list_head packed_git_mru;
 };
 
 struct raw_object_store *raw_object_store_new(void);