Merge branch 'ms/fetch-follow-tag-optim'
The code used in following tags in "git fetch" has been optimized.
* ms/fetch-follow-tag-optim:
fetch: use oidset to keep the want OIDs for faster lookup
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 67c0eb8..24d382b 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -7,6 +7,7 @@
#include "refs.h"
#include "refspec.h"
#include "object-store.h"
+#include "oidset.h"
#include "commit.h"
#include "builtin.h"
#include "string-list.h"
@@ -245,15 +246,13 @@
}
}
-static int will_fetch(struct ref **head, const unsigned char *sha1)
+static void create_fetch_oidset(struct ref **head, struct oidset *out)
{
struct ref *rm = *head;
while (rm) {
- if (hasheq(rm->old_oid.hash, sha1))
- return 1;
+ oidset_insert(out, &rm->old_oid);
rm = rm->next;
}
- return 0;
}
struct refname_hash_entry {
@@ -319,6 +318,7 @@
{
struct hashmap existing_refs;
struct hashmap remote_refs;
+ struct oidset fetch_oids = OIDSET_INIT;
struct string_list remote_refs_list = STRING_LIST_INIT_NODUP;
struct string_list_item *remote_ref_item;
const struct ref *ref;
@@ -326,6 +326,7 @@
refname_hash_init(&existing_refs);
refname_hash_init(&remote_refs);
+ create_fetch_oidset(head, &fetch_oids);
for_each_ref(add_one_refname, &existing_refs);
for (ref = refs; ref; ref = ref->next) {
@@ -342,9 +343,9 @@
if (item &&
!has_object_file_with_flags(&ref->old_oid,
OBJECT_INFO_QUICK) &&
- !will_fetch(head, ref->old_oid.hash) &&
+ !oidset_contains(&fetch_oids, &ref->old_oid) &&
!has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
- !will_fetch(head, item->oid.hash))
+ !oidset_contains(&fetch_oids, &item->oid))
clear_item(item);
item = NULL;
continue;
@@ -358,7 +359,7 @@
*/
if (item &&
!has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
- !will_fetch(head, item->oid.hash))
+ !oidset_contains(&fetch_oids, &item->oid))
clear_item(item);
item = NULL;
@@ -379,7 +380,7 @@
*/
if (item &&
!has_object_file_with_flags(&item->oid, OBJECT_INFO_QUICK) &&
- !will_fetch(head, item->oid.hash))
+ !oidset_contains(&fetch_oids, &item->oid))
clear_item(item);
/*
@@ -406,6 +407,7 @@
}
hashmap_free(&remote_refs, 1);
string_list_clear(&remote_refs_list, 0);
+ oidset_clear(&fetch_oids);
}
static struct ref *get_ref_map(struct remote *remote,
