From: Brandon Williams <bmwill@google.com>
To: Jonathan Tan <jonathantanmy@google.com>
Cc: git@vger.kernel.org, jrnieder@gmail.com
Subject: Re: [PATCH v2 1/8] fetch-pack: split up everything_local()
Date: Thu, 14 Jun 2018 10:26:15 -0700 [thread overview]
Message-ID: <20180614172615.GA220741@google.com> (raw)
In-Reply-To: <5687c0b22bf3b2bdbbe29b09788cc305a89710fc.1528317619.git.jonathantanmy@google.com>
On 06/06, Jonathan Tan wrote:
> 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().
Thanks, this is much cleaner.
>
> Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
> ---
> 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
>
--
Brandon Williams
next prev parent reply other threads:[~2018-06-14 17:26 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-04 17:29 [PATCH 0/6] Refactor fetch negotiation into its own API Jonathan Tan
2018-06-04 17:29 ` [PATCH 1/6] fetch-pack: clear marks before everything_local() Jonathan Tan
2018-06-05 23:08 ` Jonathan Nieder
2018-06-06 0:32 ` Jonathan Tan
2018-06-04 17:29 ` [PATCH 2/6] fetch-pack: truly stop negotiation upon ACK ready Jonathan Tan
2018-06-05 23:16 ` Jonathan Nieder
2018-06-05 23:18 ` Jonathan Nieder
2018-06-06 0:38 ` Jonathan Tan
2018-06-04 17:29 ` [PATCH 3/6] fetch-pack: in protocol v2, enqueue commons first Jonathan Tan
2018-06-05 23:30 ` Jonathan Nieder
2018-06-06 2:10 ` Jonathan Tan
2018-06-04 17:29 ` [PATCH 4/6] fetch-pack: make negotiation-related vars local Jonathan Tan
2018-06-05 23:35 ` Jonathan Nieder
2018-06-06 2:12 ` Jonathan Tan
2018-06-04 17:29 ` [PATCH 5/6] fetch-pack: move common check and marking together Jonathan Tan
2018-06-06 0:01 ` Jonathan Nieder
2018-06-06 2:12 ` Jonathan Tan
2018-06-04 17:29 ` [PATCH 6/6] fetch-pack: introduce negotiator API Jonathan Tan
2018-06-06 0:37 ` Jonathan Nieder
2018-06-06 2:17 ` Jonathan Tan
2018-06-06 20:47 ` [PATCH v2 0/8] Refactor fetch negotiation into its own API Jonathan Tan
2018-06-06 20:47 ` [PATCH v2 1/8] fetch-pack: split up everything_local() Jonathan Tan
2018-06-14 17:26 ` Brandon Williams [this message]
2018-06-06 20:47 ` [PATCH v2 2/8] fetch-pack: clear marks before re-marking Jonathan Tan
2018-06-06 20:47 ` [PATCH v2 3/8] fetch-pack: directly end negotiation if ACK ready Jonathan Tan
2018-06-14 17:29 ` Brandon Williams
2018-06-14 17:34 ` Brandon Williams
2018-06-06 20:47 ` [PATCH v2 4/8] fetch-pack: use ref adv. to prune "have" sent Jonathan Tan
2018-06-14 17:32 ` Brandon Williams
2018-06-14 19:52 ` Junio C Hamano
2018-06-06 20:47 ` [PATCH v2 5/8] fetch-pack: make negotiation-related vars local Jonathan Tan
2018-06-14 17:38 ` Brandon Williams
2018-06-14 19:36 ` Junio C Hamano
2018-06-06 20:47 ` [PATCH v2 6/8] fetch-pack: move common check and marking together Jonathan Tan
2018-06-06 20:47 ` [PATCH v2 7/8] fetch-pack: introduce negotiator API Jonathan Tan
2018-06-06 20:47 ` [PATCH v2 8/8] negotiator/default: use better style in comments Jonathan Tan
2018-06-14 17:39 ` Brandon Williams
2018-06-14 22:54 ` [PATCH v3 0/7] Refactor fetch negotiation into its own API Jonathan Tan
2018-06-14 22:54 ` [PATCH v3 1/7] fetch-pack: split up everything_local() Jonathan Tan
2018-06-14 22:54 ` [PATCH v3 2/7] fetch-pack: clear marks before re-marking Jonathan Tan
2018-06-14 22:54 ` [PATCH v3 3/7] fetch-pack: directly end negotiation if ACK ready Jonathan Tan
2018-06-15 16:04 ` Junio C Hamano
2018-06-14 22:54 ` [PATCH v3 4/7] fetch-pack: use ref adv. to prune "have" sent Jonathan Tan
2018-06-14 22:54 ` [PATCH v3 5/7] fetch-pack: make negotiation-related vars local Jonathan Tan
2018-06-14 22:54 ` [PATCH v3 6/7] fetch-pack: move common check and marking together Jonathan Tan
2018-06-14 22:54 ` [PATCH v3 7/7] fetch-pack: introduce negotiator API Jonathan Tan
2018-06-25 18:24 ` [PATCH v3 0/7] Refactor fetch negotiation into its own API Brandon Williams
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