The function everything_local(), despite its name, also (1) marks
commits as COMPLETE and COMMON_REF and (2) invokes filter_refs() as
important side effects. Extract (1) into its own function
(mark_complete_and_common_ref()) and remove
(2).
The restoring of save_commit_buffer, which was introduced in a1c6d7c1a7
("fetch-pack: restore save_commit_buffer after use", 2017-12-08), is a
concern of the parse_object() call in mark_complete_and_common_ref(), so
it has been moved from the end of everything_local() to the end of
mark_complete_and_common_ref().
Signed-off-by: Jonathan Tan <jonathantanmy@xxxxxxxxxx>
---
fetch-pack.c | 39 ++++++++++++++++++++++++++++++---------
1 file changed, 30 insertions(+), 9 deletions(-)
diff --git a/fetch-pack.c b/fetch-pack.c
index a320ce987..5c87bb8bb 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -734,12 +734,20 @@ static int add_loose_objects_to_set(const struct object_id *oid,
return 0;
}
-static int everything_local(struct fetch_pack_args *args,
- struct ref **refs,
- struct ref **sought, int nr_sought)
+/*
+ * Mark recent commits available locally and reachable from a local ref as
+ * COMPLETE. If args->no_dependents is false, also mark COMPLETE remote refs as
+ * COMMON_REF (otherwise, we are not planning to participate in negotiation, and
+ * thus do not need COMMON_REF marks).
+ *
+ * The cutoff time for recency is determined by this heuristic: it is the
+ * earliest commit time of the objects in refs that are commits and that we know
+ * the commit time of.
+ */
+static void mark_complete_and_common_ref(struct fetch_pack_args *args,
+ struct ref **refs)
{
struct ref *ref;
- int retval;
int old_save_commit_buffer = save_commit_buffer;
timestamp_t cutoff = 0;
struct oidset loose_oid_set = OIDSET_INIT;
@@ -812,7 +820,18 @@ static int everything_local(struct fetch_pack_args *args,
}
}
- filter_refs(args, refs, sought, nr_sought);
+ save_commit_buffer = old_save_commit_buffer;
+}
+
+/*
+ * Returns 1 if every object pointed to by the given remote refs is available
+ * locally and reachable from a local ref, and 0 otherwise.
+ */
+static int everything_local(struct fetch_pack_args *args,
+ struct ref **refs)
+{
+ struct ref *ref;
+ int retval;
for (retval = 1, ref = *refs; ref ; ref = ref->next) {
const struct object_id *remote = &ref->old_oid;
@@ -829,8 +848,6 @@ static int everything_local(struct fetch_pack_args *args,
ref->name);
}
- save_commit_buffer = old_save_commit_buffer;
-
return retval;
}
@@ -1053,7 +1070,9 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args,
if (!server_supports("deepen-relative") && args->deepen_relative)
die(_("Server does not support --deepen"));
- if (everything_local(args, &ref, sought, nr_sought)) {
+ mark_complete_and_common_ref(args, &ref);
+ filter_refs(args, &ref, sought, nr_sought);
+ if (everything_local(args, &ref)) {
packet_flush(fd[1]);
goto all_done;
}
@@ -1377,7 +1396,9 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
for_each_cached_alternate(insert_one_alternate_object);
/* Filter 'ref' by 'sought' and those that aren't local */
- if (everything_local(args, &ref, sought, nr_sought))
+ mark_complete_and_common_ref(args, &ref);
+ filter_refs(args, &ref, sought, nr_sought);
+ if (everything_local(args, &ref))
state = FETCH_DONE;
else
state = FETCH_SEND_REQUEST;
--
2.17.0.768.g1526ddbba1.dirty
