From: Junio C Hamano <gitster@pobox.com>
To: "Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org, stolee@gmail.com, avarab@gmail.com,
zhiyou.jx@alibaba-inc.com, jonathantanmy@google.com,
Derrick Stolee <derrickstolee@github.com>
Subject: Re: [PATCH 06/11] MyFirstObjectWalk: update recommended usage
Date: Fri, 04 Mar 2022 14:33:34 -0800 [thread overview]
Message-ID: <xmqqtucdxs8x.fsf@gitster.g> (raw)
In-Reply-To: <355c503157ad02e6106179c2dc7228bdf63a6228.1645638911.git.gitgitgadget@gmail.com> (Derrick Stolee via GitGitGadget's message of "Wed, 23 Feb 2022 17:55:06 +0000")
"Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com> writes:
> From: Derrick Stolee <derrickstolee@github.com>
>
> The previous change consolidated traverse_commit_list() and
> traverse_commit_list_filtered(). This allows us to simplify the
> recommended usage in MyFirstObjectWalk.txt to use this new set of
> values.
>
> While here, add some clarification on the difference between the two
> methods.
>
> Signed-off-by: Derrick Stolee <derrickstolee@github.com>
> ---
> Documentation/MyFirstObjectWalk.txt | 44 +++++++++++------------------
> 1 file changed, 16 insertions(+), 28 deletions(-)
Nice simplification.
>
> diff --git a/Documentation/MyFirstObjectWalk.txt b/Documentation/MyFirstObjectWalk.txt
> index ca267941f3e..8ec83185b8a 100644
> --- a/Documentation/MyFirstObjectWalk.txt
> +++ b/Documentation/MyFirstObjectWalk.txt
> @@ -522,24 +522,25 @@ function shows that the all-object walk is being performed by
> `traverse_commit_list()` or `traverse_commit_list_filtered()`. Those two
> functions reside in `list-objects.c`; examining the source shows that, despite
> the name, these functions traverse all kinds of objects. Let's have a look at
> -the arguments to `traverse_commit_list_filtered()`, which are a superset of the
> -arguments to the unfiltered version.
> +the arguments to `traverse_commit_list()`.
>
> -- `struct list_objects_filter_options *filter_options`: This is a struct which
> - stores a filter-spec as outlined in `Documentation/rev-list-options.txt`.
> -- `struct rev_info *revs`: This is the `rev_info` used for the walk.
> +- `struct rev_info *revs`: This is the `rev_info` used for the walk. It
> + includes a `filter` member which contains information for how to filter
> + the object list.
Perhaps,
"When its `filter` member is not NULL, it contains ..."
implying that it is valid for `filter` member to be NULL and none of
the following things will happen in such a case.
> For now, we are not going to track the omitted objects, so we'll replace those
> parameters with `NULL`. For the sake of simplicity, we'll add a simple
> -build-time branch to use our filter or not. Replace the line calling
> +build-time branch to use our filter or not. Preface the line calling
Good eyes.
> `traverse_commit_list()` with the following, which will remind us which kind of
> walk we've just performed:
>
> @@ -733,19 +723,17 @@ walk we've just performed:
> if (0) {
> /* Unfiltered: */
> trace_printf(_("Unfiltered object walk.\n"));
> - traverse_commit_list(rev, walken_show_commit,
> - walken_show_object, NULL);
> } else {
> trace_printf(
> _("Filtered object walk with filterspec 'tree:1'.\n"));
> - parse_list_objects_filter(&filter_options, "tree:1");
> -
> - traverse_commit_list_filtered(&filter_options, rev,
> - walken_show_commit, walken_show_object, NULL, NULL);
> + CALLOC_ARRAY(rev->filter, 1);
> + parse_list_objects_filter(rev->filter, "tree:1");
> }
> + traverse_commit_list(rev, walken_show_commit,
> + walken_show_object, NULL);
> ----
>
> -`struct list_objects_filter_options` is usually built directly from a command
> +The `rev->filter` member is usually built directly from a command
> line argument, so the module provides an easy way to build one from a string.
> Even though we aren't taking user input right now, we can still build one with
> a hardcoded string using `parse_list_objects_filter()`.
> @@ -784,7 +772,7 @@ object:
> ----
> ...
>
> - traverse_commit_list_filtered(&filter_options, rev,
> + traverse_commit_list_filtered(rev,
> walken_show_commit, walken_show_object, NULL, &omitted);
>
> ...
next prev parent reply other threads:[~2022-03-04 22:33 UTC|newest]
Thread overview: 114+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-23 17:55 [PATCH 00/11] Partial bundles Derrick Stolee via GitGitGadget
2022-02-23 17:55 ` [PATCH 01/11] index-pack: document and test the --promisor option Derrick Stolee via GitGitGadget
2022-02-23 17:55 ` [PATCH 02/11] revision: put object filter into struct rev_info Derrick Stolee via GitGitGadget
2022-03-04 22:15 ` Junio C Hamano
2022-03-07 13:59 ` Derrick Stolee
2022-03-07 16:46 ` Junio C Hamano
2022-02-23 17:55 ` [PATCH 03/11] pack-objects: use rev.filter when possible Derrick Stolee via GitGitGadget
2022-03-04 22:25 ` Junio C Hamano
2022-02-23 17:55 ` [PATCH 04/11] pack-bitmap: drop filter in prepare_bitmap_walk() Derrick Stolee via GitGitGadget
2022-03-04 22:26 ` Junio C Hamano
2022-02-23 17:55 ` [PATCH 05/11] list-objects: consolidate traverse_commit_list[_filtered] Derrick Stolee via GitGitGadget
2022-03-04 22:30 ` Junio C Hamano
2022-02-23 17:55 ` [PATCH 06/11] MyFirstObjectWalk: update recommended usage Derrick Stolee via GitGitGadget
2022-03-04 22:33 ` Junio C Hamano [this message]
2022-03-07 14:05 ` Derrick Stolee
2022-03-07 16:47 ` Junio C Hamano
2022-02-23 17:55 ` [PATCH 07/11] bundle: safely handle --objects option Derrick Stolee via GitGitGadget
2022-02-28 16:00 ` Jeff Hostetler
2022-03-04 22:58 ` Junio C Hamano
2022-03-07 14:09 ` Derrick Stolee
2022-03-04 22:57 ` Junio C Hamano
2022-03-07 15:35 ` Ævar Arnfjörð Bjarmason
2022-02-23 17:55 ` [PATCH 08/11] bundle: parse filter capability Derrick Stolee via GitGitGadget
2022-03-07 15:38 ` Ævar Arnfjörð Bjarmason
2022-03-07 16:14 ` Derrick Stolee
2022-03-07 16:22 ` Ævar Arnfjörð Bjarmason
2022-03-07 16:29 ` Derrick Stolee
2022-03-07 15:55 ` Ævar Arnfjörð Bjarmason
2022-02-23 17:55 ` [PATCH 09/11] rev-list: move --filter parsing into revision.c Derrick Stolee via GitGitGadget
2022-02-23 17:55 ` [PATCH 10/11] bundle: create filtered bundles Derrick Stolee via GitGitGadget
2022-03-04 23:35 ` Junio C Hamano
2022-03-07 14:14 ` Derrick Stolee
2022-03-07 16:49 ` Junio C Hamano
2022-03-07 15:44 ` Ævar Arnfjörð Bjarmason
2022-02-23 17:55 ` [PATCH 11/11] bundle: unbundle promisor packs Derrick Stolee via GitGitGadget
2022-03-04 23:43 ` Junio C Hamano
2022-03-07 14:48 ` Derrick Stolee
2022-03-07 16:56 ` Junio C Hamano
2022-03-07 18:57 ` Derrick Stolee
2022-03-07 19:40 ` Junio C Hamano
2022-03-07 19:49 ` Derrick Stolee
2022-03-07 19:54 ` Junio C Hamano
2022-03-07 20:20 ` Derrick Stolee
2022-03-07 21:35 ` Junio C Hamano
2022-03-07 15:47 ` Ævar Arnfjörð Bjarmason
2022-03-07 16:10 ` Derrick Stolee
2022-02-28 17:00 ` [PATCH 00/11] Partial bundles Jeff Hostetler
2022-02-28 17:54 ` Derrick Stolee
2022-03-01 18:03 ` Jeff Hostetler
2022-03-04 19:19 ` Derrick Stolee
2022-03-07 14:55 ` Ævar Arnfjörð Bjarmason
2022-03-07 14:59 ` Derrick Stolee
2022-03-07 21:50 ` [PATCH v2 00/12] " Derrick Stolee via GitGitGadget
2022-03-07 21:50 ` [PATCH v2 01/12] index-pack: document and test the --promisor option Derrick Stolee via GitGitGadget
2022-03-07 21:50 ` [PATCH v2 02/12] revision: put object filter into struct rev_info Derrick Stolee via GitGitGadget
2022-03-07 21:50 ` [PATCH v2 03/12] pack-objects: use rev.filter when possible Derrick Stolee via GitGitGadget
2022-03-07 21:50 ` [PATCH v2 04/12] pack-bitmap: drop filter in prepare_bitmap_walk() Derrick Stolee via GitGitGadget
2022-03-07 21:50 ` [PATCH v2 05/12] list-objects: consolidate traverse_commit_list[_filtered] Derrick Stolee via GitGitGadget
2022-03-07 21:50 ` [PATCH v2 06/12] MyFirstObjectWalk: update recommended usage Derrick Stolee via GitGitGadget
2022-03-07 21:50 ` [PATCH v2 07/12] bundle: safely handle --objects option Derrick Stolee via GitGitGadget
2022-03-08 9:37 ` Ævar Arnfjörð Bjarmason
2022-03-08 13:45 ` Derrick Stolee
2022-03-08 13:53 ` Ævar Arnfjörð Bjarmason
2022-03-07 21:50 ` [PATCH v2 08/12] bundle: parse filter capability Derrick Stolee via GitGitGadget
2022-03-08 9:25 ` Ævar Arnfjörð Bjarmason
2022-03-08 13:43 ` Derrick Stolee
2022-03-07 21:50 ` [PATCH v2 09/12] rev-list: move --filter parsing into revision.c Derrick Stolee via GitGitGadget
2022-03-07 21:50 ` [PATCH v2 10/12] bundle: create filtered bundles Derrick Stolee via GitGitGadget
2022-03-07 21:50 ` [PATCH v2 11/12] bundle: unbundle promisor packs Derrick Stolee via GitGitGadget
2022-03-07 21:50 ` [PATCH v2 12/12] clone: fail gracefully when cloning filtered bundle Derrick Stolee via GitGitGadget
2022-03-07 22:11 ` [PATCH v2 00/12] Partial bundles Junio C Hamano
2022-03-08 14:39 ` [PATCH v3 " Derrick Stolee via GitGitGadget
2022-03-08 14:39 ` [PATCH v3 01/12] index-pack: document and test the --promisor option Derrick Stolee via GitGitGadget
2022-03-08 14:39 ` [PATCH v3 02/12] revision: put object filter into struct rev_info Derrick Stolee via GitGitGadget
2022-03-08 14:39 ` [PATCH v3 03/12] pack-objects: use rev.filter when possible Derrick Stolee via GitGitGadget
2022-03-08 14:39 ` [PATCH v3 04/12] pack-bitmap: drop filter in prepare_bitmap_walk() Derrick Stolee via GitGitGadget
2022-03-08 14:39 ` [PATCH v3 05/12] list-objects: consolidate traverse_commit_list[_filtered] Derrick Stolee via GitGitGadget
2022-03-09 13:24 ` Ævar Arnfjörð Bjarmason
2022-03-08 14:39 ` [PATCH v3 06/12] MyFirstObjectWalk: update recommended usage Derrick Stolee via GitGitGadget
2022-03-08 14:39 ` [PATCH v3 07/12] list-objects: handle NULL function pointers Ævar Arnfjörð Bjarmason via GitGitGadget
2022-03-08 17:26 ` Junio C Hamano
2022-03-09 13:40 ` Ævar Arnfjörð Bjarmason
2022-03-09 14:16 ` Derrick Stolee
2022-03-09 18:32 ` Junio C Hamano
2022-03-08 14:39 ` [PATCH v3 08/12] bundle: parse filter capability Derrick Stolee via GitGitGadget
2022-03-08 17:29 ` Junio C Hamano
2022-03-09 14:35 ` Derrick Stolee
2022-03-09 13:30 ` Ævar Arnfjörð Bjarmason
2022-03-08 14:39 ` [PATCH v3 09/12] rev-list: move --filter parsing into revision.c Derrick Stolee via GitGitGadget
2022-03-08 14:39 ` [PATCH v3 10/12] bundle: create filtered bundles Derrick Stolee via GitGitGadget
2022-03-08 14:39 ` [PATCH v3 11/12] bundle: unbundle promisor packs Derrick Stolee via GitGitGadget
2022-03-08 14:39 ` [PATCH v3 12/12] clone: fail gracefully when cloning filtered bundle Derrick Stolee via GitGitGadget
2022-03-08 16:10 ` Derrick Stolee
2022-03-08 17:19 ` Junio C Hamano
2022-03-09 16:01 ` [PATCH v4 00/13] Partial bundles Derrick Stolee via GitGitGadget
2022-03-09 16:01 ` [PATCH v4 01/13] index-pack: document and test the --promisor option Derrick Stolee via GitGitGadget
2022-03-09 16:01 ` [PATCH v4 02/13] list-objects-filter-options: create copy helper Derrick Stolee via GitGitGadget
2022-03-09 16:01 ` [PATCH v4 03/13] revision: put object filter into struct rev_info Derrick Stolee via GitGitGadget
2022-03-09 18:48 ` Junio C Hamano
2022-03-09 16:01 ` [PATCH v4 04/13] pack-objects: use rev.filter when possible Derrick Stolee via GitGitGadget
2022-03-10 13:11 ` Ævar Arnfjörð Bjarmason
2022-03-10 13:33 ` Derrick Stolee
2022-03-10 14:24 ` Ævar Arnfjörð Bjarmason
2022-03-09 16:01 ` [PATCH v4 05/13] pack-bitmap: drop filter in prepare_bitmap_walk() Derrick Stolee via GitGitGadget
2022-03-09 16:01 ` [PATCH v4 06/13] list-objects: consolidate traverse_commit_list[_filtered] Derrick Stolee via GitGitGadget
2022-03-09 16:01 ` [PATCH v4 07/13] MyFirstObjectWalk: update recommended usage Derrick Stolee via GitGitGadget
2022-03-09 16:01 ` [PATCH v4 08/13] list-objects: handle NULL function pointers Ævar Arnfjörð Bjarmason via GitGitGadget
2022-03-09 16:01 ` [PATCH v4 09/13] bundle: parse filter capability Derrick Stolee via GitGitGadget
2022-03-09 18:41 ` Junio C Hamano
2022-03-09 18:55 ` Derrick Stolee
2022-03-09 16:01 ` [PATCH v4 10/13] rev-list: move --filter parsing into revision.c Derrick Stolee via GitGitGadget
2022-03-09 16:01 ` [PATCH v4 11/13] bundle: create filtered bundles Derrick Stolee via GitGitGadget
2022-03-09 16:01 ` [PATCH v4 12/13] bundle: unbundle promisor packs Derrick Stolee via GitGitGadget
2022-03-09 16:01 ` [PATCH v4 13/13] clone: fail gracefully when cloning filtered bundle Derrick Stolee via GitGitGadget
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