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From: "Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: peff@peff.net, avarab@gmail.com, jrnieder@gmail.com,
	Junio C Hamano <gitster@pobox.com>,
	Derrick Stolee <dstolee@microsoft.com>
Subject: [PATCH 1/5] revision: add mark_tree_uninteresting_sparse
Date: Wed, 28 Nov 2018 13:52:43 -0800 (PST)
Message-ID: <b73b8de98c9c69a0396b435cb093ee522632796d.1543441959.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.89.git.gitgitgadget@gmail.com>

From: Derrick Stolee <dstolee@microsoft.com>

In preparation for a new algorithm that walks fewer trees when
creating a pack from a set of revisions, create a method that
takes an oidset of tree oids and marks reachable objects as
UNINTERESTING.

The current implementation uses the existing
mark_tree_uninteresting to recursively walk the trees and blobs.
This will walk the same number of trees as the old mechanism.

There is one new assumption in this approach: we are also given
the oids of the interesting trees. This implementation does not
use those trees at the moment, but we will use them in a later
rewrite of this method.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
---
 revision.c | 22 ++++++++++++++++++++++
 revision.h |  2 ++
 2 files changed, 24 insertions(+)

diff --git a/revision.c b/revision.c
index 13e0519c02..3a62c7c187 100644
--- a/revision.c
+++ b/revision.c
@@ -99,6 +99,28 @@ void mark_tree_uninteresting(struct repository *r, struct tree *tree)
 	mark_tree_contents_uninteresting(r, tree);
 }
 
+void mark_trees_uninteresting_sparse(struct repository *r,
+				     struct oidset *set)
+{
+	struct object_id *oid;
+	struct oidset_iter iter;
+
+	oidset_iter_init(set, &iter);
+	while ((oid = oidset_iter_next(&iter))) {
+		struct tree *tree = lookup_tree(r, oid);
+
+		if (tree->object.flags & UNINTERESTING) {
+			/*
+			 * Remove the flag so the next call
+			 * is not a no-op. The flag is added
+			 * in mark_tree_unintersting().
+			 */
+			tree->object.flags ^= UNINTERESTING;
+			mark_tree_uninteresting(r, tree);
+		}
+	}
+}
+
 struct commit_stack {
 	struct commit **items;
 	size_t nr, alloc;
diff --git a/revision.h b/revision.h
index 7987bfcd2e..f828e91ae9 100644
--- a/revision.h
+++ b/revision.h
@@ -67,6 +67,7 @@ struct rev_cmdline_info {
 #define REVISION_WALK_NO_WALK_SORTED 1
 #define REVISION_WALK_NO_WALK_UNSORTED 2
 
+struct oidset;
 struct topo_walk_info;
 
 struct rev_info {
@@ -327,6 +328,7 @@ void put_revision_mark(const struct rev_info *revs,
 
 void mark_parents_uninteresting(struct commit *commit);
 void mark_tree_uninteresting(struct repository *r, struct tree *tree);
+void mark_trees_uninteresting_sparse(struct repository *r, struct oidset *set);
 
 void show_object_with_name(FILE *, struct object *, const char *);
 
-- 
gitgitgadget


  reply index

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-28 21:52 [PATCH 0/5] Add a new "sparse" tree walk algorithm Derrick Stolee via GitGitGadget
2018-11-28 21:52 ` Derrick Stolee via GitGitGadget [this message]
2018-11-28 21:52 ` [PATCH 2/5] list-objects: consume sparse tree walk Derrick Stolee via GitGitGadget
2018-11-28 21:52 ` [PATCH 3/5] pack-objects: add --sparse option Derrick Stolee via GitGitGadget
2018-11-28 22:11   ` Stefan Beller
2018-11-29 14:20     ` Derrick Stolee
2018-11-30  2:39       ` Junio C Hamano
2018-11-30 15:53         ` Derrick Stolee
2018-11-28 21:52 ` [PATCH 4/5] revision: implement sparse algorithm Derrick Stolee via GitGitGadget
2018-11-28 21:52 ` [PATCH 5/5] pack-objects: create pack.useSparse setting Derrick Stolee via GitGitGadget
2018-11-28 22:18 ` [PATCH 0/5] Add a new "sparse" tree walk algorithm Ævar Arnfjörð Bjarmason
2018-11-29  4:05   ` Derrick Stolee
2018-11-29 14:24 ` [PATCH v2 0/6] " Derrick Stolee via GitGitGadget
2018-11-29 14:24   ` [PATCH v2 1/6] revision: add mark_tree_uninteresting_sparse Derrick Stolee via GitGitGadget
2018-11-29 14:24   ` [PATCH v2 2/6] list-objects: consume sparse tree walk Derrick Stolee via GitGitGadget
2018-11-29 14:24   ` [PATCH v2 3/6] pack-objects: add --sparse option Derrick Stolee via GitGitGadget
2018-11-29 14:24   ` [PATCH v2 4/6] revision: implement sparse algorithm Derrick Stolee via GitGitGadget
2018-11-29 14:24   ` [PATCH v2 5/6] pack-objects: create pack.useSparse setting Derrick Stolee via GitGitGadget
2018-11-29 14:24   ` [PATCH v2 6/6] pack-objects: create GIT_TEST_PACK_SPARSE Derrick Stolee via GitGitGadget
2018-12-10 16:42   ` [PATCH v3 0/6] Add a new "sparse" tree walk algorithm Derrick Stolee via GitGitGadget
2018-12-10 16:42     ` [PATCH v3 1/6] revision: add mark_tree_uninteresting_sparse Derrick Stolee via GitGitGadget
2018-12-10 16:42     ` [PATCH v3 2/6] list-objects: consume sparse tree walk Derrick Stolee via GitGitGadget
2018-12-10 16:42     ` [PATCH v3 3/6] pack-objects: add --sparse option Derrick Stolee via GitGitGadget
2018-12-10 16:42     ` [PATCH v3 4/6] revision: implement sparse algorithm Derrick Stolee via GitGitGadget
2018-12-10 16:42     ` [PATCH v3 5/6] pack-objects: create pack.useSparse setting Derrick Stolee via GitGitGadget
2018-12-10 16:42     ` [PATCH v3 6/6] pack-objects: create GIT_TEST_PACK_SPARSE Derrick Stolee via GitGitGadget
2018-12-14 21:22     ` [PATCH v4 0/6] Add a new "sparse" tree walk algorithm Derrick Stolee via GitGitGadget
2018-12-14 21:22       ` [PATCH v4 1/6] revision: add mark_tree_uninteresting_sparse Derrick Stolee via GitGitGadget
2019-01-11 19:43         ` Junio C Hamano
2019-01-11 20:25           ` Junio C Hamano
2019-01-11 22:05             ` Derrick Stolee
2018-12-14 21:22       ` [PATCH v4 2/6] list-objects: consume sparse tree walk Derrick Stolee via GitGitGadget
2019-01-11 23:20         ` Junio C Hamano
2018-12-14 21:22       ` [PATCH v4 3/6] pack-objects: add --sparse option Derrick Stolee via GitGitGadget
2019-01-11 22:30         ` Junio C Hamano
2019-01-15 15:06           ` Derrick Stolee
2019-01-15 18:23             ` Junio C Hamano
2018-12-14 21:22       ` [PATCH v4 4/6] revision: implement sparse algorithm Derrick Stolee via GitGitGadget
2018-12-14 23:32         ` Ævar Arnfjörð Bjarmason
2018-12-17 14:20           ` Derrick Stolee
2018-12-17 14:26             ` Ævar Arnfjörð Bjarmason
2018-12-17 14:50               ` Derrick Stolee
2019-01-11 23:20         ` Junio C Hamano
2018-12-14 21:22       ` [PATCH v4 5/6] pack-objects: create pack.useSparse setting Derrick Stolee via GitGitGadget
2018-12-14 21:22       ` [PATCH v4 6/6] pack-objects: create GIT_TEST_PACK_SPARSE Derrick Stolee via GitGitGadget
2019-01-16 18:25       ` [PATCH v5 0/5] Add a new "sparse" tree walk algorithm Derrick Stolee via GitGitGadget
2019-01-16 18:25         ` [PATCH v5 1/5] revision: add mark_tree_uninteresting_sparse Derrick Stolee via GitGitGadget
2019-01-16 18:25         ` [PATCH v5 2/5] list-objects: consume sparse tree walk Derrick Stolee via GitGitGadget
2019-01-16 18:25         ` [PATCH v5 3/5] revision: implement sparse algorithm Derrick Stolee via GitGitGadget
2019-01-16 18:26         ` [PATCH v5 4/5] pack-objects: create pack.useSparse setting Derrick Stolee via GitGitGadget
2019-01-16 18:26         ` [PATCH v5 5/5] pack-objects: create GIT_TEST_PACK_SPARSE Derrick Stolee via GitGitGadget

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