From: "Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: Elijah Newren <newren@gmail.com>, Elijah Newren <newren@gmail.com>
Subject: [PATCH 3/3] merge-ort: implement merge_incore_recursive()
Date: Tue, 15 Dec 2020 17:53:27 +0000 [thread overview]
Message-ID: <82a773d8972b6641a25b3c84121dd38703a9286c.1608054807.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.814.git.1608054807.gitgitgadget@gmail.com>
From: Elijah Newren <newren@gmail.com>
Implement merge_incore_recursive(), mostly through the use of a new
helper function, merge_ort_internal(), which itself is based off
merge_recursive_internal() from merge-recursive.c.
This drops the number of failures in the testsuite when run under
GIT_TEST_MERGE_ALGORITHM=ort from around 1500 to 647.
Signed-off-by: Elijah Newren <newren@gmail.com>
---
merge-ort.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 89 insertions(+), 3 deletions(-)
diff --git a/merge-ort.c b/merge-ort.c
index 10a97e944c4..65f7ce2b223 100644
--- a/merge-ort.c
+++ b/merge-ort.c
@@ -1476,6 +1476,90 @@ static void merge_ort_nonrecursive_internal(struct merge_options *opt,
}
}
+/*
+ * Originally from merge_recursive_internal(); somewhat adapted, though.
+ */
+static void merge_ort_internal(struct merge_options *opt,
+ struct commit_list *merge_bases,
+ struct commit *h1,
+ struct commit *h2,
+ struct merge_result *result)
+{
+ struct commit_list *iter;
+ struct commit *merged_merge_bases;
+ const char *ancestor_name;
+ struct strbuf merge_base_abbrev = STRBUF_INIT;
+
+ if (!merge_bases) {
+ merge_bases = get_merge_bases(h1, h2);
+ merge_bases = reverse_commit_list(merge_bases);
+ }
+
+ merged_merge_bases = pop_commit(&merge_bases);
+ if (merged_merge_bases == NULL) {
+ /* if there is no common ancestor, use an empty tree */
+ struct tree *tree;
+
+ tree = lookup_tree(opt->repo, opt->repo->hash_algo->empty_tree);
+ merged_merge_bases = make_virtual_commit(opt->repo, tree,
+ "ancestor");
+ ancestor_name = "empty tree";
+ } else if (opt->ancestor && !opt->priv->call_depth) {
+ ancestor_name = opt->ancestor;
+ } else if (merge_bases) {
+ ancestor_name = "merged common ancestors";
+ } else {
+ strbuf_add_unique_abbrev(&merge_base_abbrev,
+ &merged_merge_bases->object.oid,
+ DEFAULT_ABBREV);
+ ancestor_name = merge_base_abbrev.buf;
+ }
+
+ for (iter = merge_bases; iter; iter = iter->next) {
+ const char *saved_b1, *saved_b2;
+ struct commit *prev = merged_merge_bases;
+
+ opt->priv->call_depth++;
+ /*
+ * When the merge fails, the result contains files
+ * with conflict markers. The cleanness flag is
+ * ignored (unless indicating an error), it was never
+ * actually used, as result of merge_trees has always
+ * overwritten it: the committed "conflicts" were
+ * already resolved.
+ */
+ saved_b1 = opt->branch1;
+ saved_b2 = opt->branch2;
+ opt->branch1 = "Temporary merge branch 1";
+ opt->branch2 = "Temporary merge branch 2";
+ merge_ort_internal(opt, NULL, prev, iter->item, result);
+ if (result->clean < 0)
+ return;
+ opt->branch1 = saved_b1;
+ opt->branch2 = saved_b2;
+ opt->priv->call_depth--;
+
+ merged_merge_bases = make_virtual_commit(opt->repo,
+ result->tree,
+ "merged tree");
+ commit_list_insert(prev, &merged_merge_bases->parents);
+ commit_list_insert(iter->item,
+ &merged_merge_bases->parents->next);
+
+ clear_or_reinit_internal_opts(opt->priv, 1);
+ }
+
+ opt->ancestor = ancestor_name;
+ merge_ort_nonrecursive_internal(opt,
+ repo_get_commit_tree(opt->repo,
+ merged_merge_bases),
+ repo_get_commit_tree(opt->repo, h1),
+ repo_get_commit_tree(opt->repo, h2),
+ result);
+ strbuf_release(&merge_base_abbrev);
+ opt->ancestor = NULL; /* avoid accidental re-use of opt->ancestor */
+}
+
void merge_incore_nonrecursive(struct merge_options *opt,
struct tree *merge_base,
struct tree *side1,
@@ -1493,7 +1577,9 @@ void merge_incore_recursive(struct merge_options *opt,
struct commit *side2,
struct merge_result *result)
{
- (void)reverse_commit_list;
- (void)make_virtual_commit;
- die("Not yet implemented");
+ assert(opt->ancestor == NULL ||
+ !strcmp(opt->ancestor, "constructed merge base"));
+
+ merge_start(opt, result);
+ merge_ort_internal(opt, merge_bases, side1, side2, result);
}
--
gitgitgadget
next prev parent reply other threads:[~2020-12-15 17:54 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-15 17:53 [PATCH 0/3] merge-ort: implement recursive merges Elijah Newren via GitGitGadget
2020-12-15 17:53 ` [PATCH 1/3] merge-ort: copy a few small helper functions from merge-recursive.c Elijah Newren via GitGitGadget
2020-12-16 1:16 ` Junio C Hamano
2020-12-16 16:12 ` Johannes Schindelin
2020-12-16 16:24 ` Elijah Newren
2020-12-16 13:30 ` Derrick Stolee
2020-12-16 17:43 ` Junio C Hamano
2020-12-16 18:54 ` Felipe Contreras
2020-12-16 19:20 ` Elijah Newren
2020-12-16 20:41 ` Junio C Hamano
2020-12-16 21:25 ` Felipe Contreras
2020-12-16 21:34 ` Elijah Newren
2020-12-15 17:53 ` [PATCH 2/3] merge-ort: make clear_internal_opts() aware of partial clearing Elijah Newren via GitGitGadget
2020-12-15 17:53 ` Elijah Newren via GitGitGadget [this message]
2020-12-16 2:07 ` [PATCH 3/3] merge-ort: implement merge_incore_recursive() Junio C Hamano
2020-12-16 4:09 ` Elijah Newren
2020-12-16 4:44 ` Elijah Newren
2020-12-16 5:52 ` [PATCH v2 0/3] merge-ort: implement recursive merges Elijah Newren via GitGitGadget
2020-12-16 5:52 ` [PATCH v2 1/3] merge-ort: copy a few small helper functions from merge-recursive.c Elijah Newren via GitGitGadget
2020-12-16 5:52 ` [PATCH v2 2/3] merge-ort: make clear_internal_opts() aware of partial clearing Elijah Newren via GitGitGadget
2020-12-16 5:52 ` [PATCH v2 3/3] merge-ort: implement merge_incore_recursive() Elijah Newren via GitGitGadget
2020-12-16 18:09 ` Junio C Hamano
2020-12-16 18:37 ` Elijah Newren
2020-12-16 17:17 ` [PATCH v3 0/3] merge-ort: implement recursive merges Elijah Newren via GitGitGadget
2020-12-16 17:17 ` [PATCH v3 1/3] merge-ort: copy a few small helper functions from merge-recursive.c Elijah Newren via GitGitGadget
2020-12-16 17:17 ` [PATCH v3 2/3] merge-ort: make clear_internal_opts() aware of partial clearing Elijah Newren via GitGitGadget
2020-12-16 17:17 ` [PATCH v3 3/3] merge-ort: implement merge_incore_recursive() Elijah Newren via GitGitGadget
2020-12-16 20:35 ` [PATCH v4 0/3] merge-ort: implement recursive merges Elijah Newren via GitGitGadget
2020-12-16 20:35 ` [PATCH v4 1/3] merge-ort: copy a few small helper functions from merge-recursive.c Elijah Newren via GitGitGadget
2020-12-16 20:35 ` [PATCH v4 2/3] merge-ort: make clear_internal_opts() aware of partial clearing Elijah Newren via GitGitGadget
2020-12-16 20:35 ` [PATCH v4 3/3] merge-ort: implement merge_incore_recursive() Elijah Newren via GitGitGadget
2020-12-16 22:27 ` [PATCH v5 0/4] merge-ort: implement recursive merges Elijah Newren via GitGitGadget
2020-12-16 22:27 ` [PATCH v5 1/4] commit: move reverse_commit_list() from merge-recursive Elijah Newren via GitGitGadget
2020-12-17 14:03 ` Derrick Stolee
2020-12-16 22:28 ` [PATCH v5 2/4] merge-ort: copy a few small helper functions from merge-recursive.c Elijah Newren via GitGitGadget
2020-12-16 22:28 ` [PATCH v5 3/4] merge-ort: make clear_internal_opts() aware of partial clearing Elijah Newren via GitGitGadget
2020-12-16 22:28 ` [PATCH v5 4/4] merge-ort: implement merge_incore_recursive() Elijah Newren via GitGitGadget
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