From: Elijah Newren <newren@gmail.com>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>,
Johannes Schindelin <Johannes.Schindelin@gmx.de>,
Elijah Newren <newren@gmail.com>
Subject: [PATCH v2 05/20] merge-recursive: remove useless parameter in merge_trees()
Date: Fri, 26 Jul 2019 08:52:43 -0700 [thread overview]
Message-ID: <20190726155258.28561-6-newren@gmail.com> (raw)
In-Reply-To: <20190726155258.28561-1-newren@gmail.com>
merge_trees() took a results parameter that would only be written when
opt->call_depth was positive, which is never the case now that
merge_trees_internal() has been split from merge_trees(). Remove the
misleading and unused parameter from merge_trees().
While at it, add some comments explaining how the output of
merge_trees() and merge_recursive() differ.
Signed-off-by: Elijah Newren <newren@gmail.com>
---
builtin/checkout.c | 4 +---
merge-recursive.c | 6 +++---
merge-recursive.h | 20 ++++++++++++++++----
sequencer.c | 4 ++--
4 files changed, 22 insertions(+), 12 deletions(-)
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 91f8509f85..20e38c5edc 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -708,7 +708,6 @@ static int merge_working_tree(const struct checkout_opts *opts,
* give up or do a real merge, depending on
* whether the merge flag was used.
*/
- struct tree *result;
struct tree *work;
struct tree *old_tree;
struct merge_options o;
@@ -773,8 +772,7 @@ static int merge_working_tree(const struct checkout_opts *opts,
ret = merge_trees(&o,
new_tree,
work,
- old_tree,
- &result);
+ old_tree);
if (ret < 0)
exit(128);
ret = reset_tree(new_tree,
diff --git a/merge-recursive.c b/merge-recursive.c
index f5cf21e2e0..4a481c3929 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -3613,14 +3613,14 @@ static void merge_finalize(struct merge_options *opt)
int merge_trees(struct merge_options *opt,
struct tree *head,
struct tree *merge,
- struct tree *common,
- struct tree **result)
+ struct tree *common)
{
int clean;
+ struct tree *ignored;
if (merge_start(opt, head))
return -1;
- clean = merge_trees_internal(opt, head, merge, common, result);
+ clean = merge_trees_internal(opt, head, merge, common, &ignored);
merge_finalize(opt);
return clean;
diff --git a/merge-recursive.h b/merge-recursive.h
index c2b7bb65c6..812c456f1b 100644
--- a/merge-recursive.h
+++ b/merge-recursive.h
@@ -70,19 +70,31 @@ static inline int merge_detect_rename(struct merge_options *o)
o->diff_detect_rename >= 0 ? o->diff_detect_rename : 1;
}
-/* merge_trees() but with recursive ancestor consolidation */
+/*
+ * merge_recursive is like merge_trees() but with recursive ancestor
+ * consolidation, and when successful, it creates an actual commit
+ * and writes its address to *result.
+ *
+ * NOTE: empirically, about a decade ago it was determined that with more
+ * than two merge bases, optimal behavior was found when the
+ * ancestors were passed in the order of oldest merge base to newest
+ * one. Also, ancestors will be consumed (emptied) so make a copy if
+ * you need it.
+ */
int merge_recursive(struct merge_options *o,
struct commit *h1,
struct commit *h2,
struct commit_list *ancestors,
struct commit **result);
-/* rename-detecting three-way merge, no recursion */
+/*
+ * rename-detecting three-way merge, no recursion; result of merge is written
+ * to opt->repo->index.
+ */
int merge_trees(struct merge_options *o,
struct tree *head,
struct tree *merge,
- struct tree *common,
- struct tree **result);
+ struct tree *common);
/*
* "git-merge-recursive" can be fed trees; wrap them into
diff --git a/sequencer.c b/sequencer.c
index 34ebf8ed94..c4ed30f1b4 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -586,7 +586,7 @@ static int do_recursive_merge(struct repository *r,
struct replay_opts *opts)
{
struct merge_options o;
- struct tree *result, *next_tree, *base_tree, *head_tree;
+ struct tree *next_tree, *base_tree, *head_tree;
int clean;
char **xopt;
struct lock_file index_lock = LOCK_INIT;
@@ -613,7 +613,7 @@ static int do_recursive_merge(struct repository *r,
clean = merge_trees(&o,
head_tree,
- next_tree, base_tree, &result);
+ next_tree, base_tree);
if (is_rebase_i(opts) && clean <= 0)
fputs(o.obuf.buf, stdout);
strbuf_release(&o.obuf);
--
2.22.0.550.g71c37a0928.dirty
next prev parent reply other threads:[~2019-07-26 15:53 UTC|newest]
Thread overview: 157+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-25 17:45 [PATCH 00/19] Cleanup merge API Elijah Newren
2019-07-25 17:45 ` [PATCH 01/19] merge-recursive: fix minor memory leak in error condition Elijah Newren
2019-07-25 17:45 ` [PATCH 02/19] merge-recursive: remove another implicit dependency on the_repository Elijah Newren
2019-07-25 17:45 ` [PATCH 03/19] Ensure index matches head before invoking merge machinery, round N Elijah Newren
2019-07-25 19:41 ` Johannes Schindelin
2019-07-25 19:58 ` Elijah Newren
2019-07-26 11:23 ` Johannes Schindelin
2019-07-25 17:45 ` [PATCH 04/19] merge-recursive: exit early if index != head Elijah Newren
2019-07-25 19:51 ` Johannes Schindelin
2019-07-25 20:12 ` Elijah Newren
2019-07-25 17:45 ` [PATCH 05/19] merge-recursive: don't force external callers to do our logging Elijah Newren
2019-07-25 17:45 ` [PATCH 06/19] Change call signature of write_tree_from_memory() Elijah Newren
2019-07-25 19:55 ` Johannes Schindelin
2019-07-26 4:58 ` Elijah Newren
2019-07-25 17:45 ` [PATCH 07/19] Move write_tree_from_memory() from merge-recursive to cache-tree Elijah Newren
2019-07-25 17:46 ` [PATCH 08/19] merge-recursive: fix some overly long lines Elijah Newren
2019-07-25 17:46 ` [PATCH 09/19] merge-recursive: use common name for ancestors/common/base_list Elijah Newren
2019-07-25 17:46 ` [PATCH 10/19] merge-recursive: rename 'mrtree' to 'result_tree', for clarity Elijah Newren
2019-07-25 20:02 ` Johannes Schindelin
2019-07-25 17:46 ` [PATCH 11/19] merge-recursive: rename merge_options argument to opt in header Elijah Newren
2019-07-25 17:46 ` [PATCH 12/19] merge-recursive: move some definitions around to clean up the header Elijah Newren
2019-07-25 17:46 ` [PATCH 13/19] merge-recursive: consolidate unnecessary fields in merge_options Elijah Newren
2019-07-25 17:46 ` [PATCH 14/19] merge-recursive: comment and reorder the merge_options fields Elijah Newren
2019-07-25 17:46 ` [PATCH 15/19] merge-recursive: split internal fields into a separate struct Elijah Newren
2019-07-25 20:12 ` Johannes Schindelin
2019-07-25 20:27 ` Elijah Newren
2019-07-26 11:25 ` Johannes Schindelin
2019-07-26 15:30 ` Elijah Newren
2019-07-25 17:46 ` [PATCH 16/19] merge-recursive: alphabetize include list Elijah Newren
2019-07-25 17:46 ` [PATCH 17/19] merge-recursive: rename MERGE_RECURSIVE_* to MERGE_VARIANT_* Elijah Newren
2019-07-25 17:46 ` [PATCH 18/19] merge-recursive: be consistent with assert Elijah Newren
2019-07-25 17:46 ` [PATCH 19/19] merge-recursive: provide a better label for diff3 common ancestor Elijah Newren
2019-07-25 20:28 ` Johannes Schindelin
2019-07-25 18:12 ` [PATCH 00/19] Cleanup merge API Junio C Hamano
2019-07-25 19:06 ` Elijah Newren
2019-07-25 22:50 ` Junio C Hamano
2019-07-26 14:07 ` Johannes Schindelin
2019-07-25 19:15 ` Johannes Schindelin
2019-07-26 15:15 ` Elijah Newren
2019-07-26 15:52 ` [PATCH v2 00/20] " Elijah Newren
2019-07-26 15:52 ` [PATCH v2 01/20] merge-recursive: fix minor memory leak in error condition Elijah Newren
2019-07-26 18:31 ` Junio C Hamano
2019-07-26 23:19 ` Elijah Newren
2019-07-29 14:13 ` Derrick Stolee
2019-07-26 15:52 ` [PATCH v2 02/20] merge-recursive: remove another implicit dependency on the_repository Elijah Newren
2019-07-26 18:42 ` Junio C Hamano
2019-07-26 15:52 ` [PATCH v2 03/20] Ensure index matches head before invoking merge machinery, round N Elijah Newren
2019-07-26 19:14 ` Junio C Hamano
2019-07-26 23:22 ` Elijah Newren
2019-07-26 15:52 ` [PATCH v2 04/20] merge-recursive: exit early if index != head Elijah Newren
2019-07-26 19:32 ` Junio C Hamano
2019-07-26 23:26 ` Elijah Newren
2019-07-29 15:56 ` Junio C Hamano
2019-07-26 15:52 ` Elijah Newren [this message]
2019-07-26 19:37 ` [PATCH v2 05/20] merge-recursive: remove useless parameter in merge_trees() Junio C Hamano
2019-07-26 15:52 ` [PATCH v2 06/20] merge-recursive: don't force external callers to do our logging Elijah Newren
2019-07-26 19:57 ` Junio C Hamano
2019-07-26 23:28 ` Elijah Newren
2019-07-26 15:52 ` [PATCH v2 07/20] Use write_index_as_tree() in lieu of write_tree_from_memory() Elijah Newren
2019-07-26 20:11 ` Junio C Hamano
2019-07-26 23:39 ` Elijah Newren
2019-07-29 4:46 ` Junio C Hamano
2019-07-26 15:52 ` [PATCH v2 08/20] merge-recursive: fix some overly long lines Elijah Newren
2019-07-26 15:52 ` [PATCH v2 09/20] merge-recursive: use common name for ancestors/common/base_list Elijah Newren
2019-07-26 15:52 ` [PATCH v2 10/20] merge-recursive: rename 'mrtree' to 'result_tree', for clarity Elijah Newren
2019-07-26 15:52 ` [PATCH v2 11/20] merge-recursive: rename merge_options argument to opt in header Elijah Newren
2019-07-26 15:52 ` [PATCH v2 12/20] merge-recursive: move some definitions around to clean up the header Elijah Newren
2019-07-26 15:52 ` [PATCH v2 13/20] merge-recursive: consolidate unnecessary fields in merge_options Elijah Newren
2019-07-26 15:52 ` [PATCH v2 14/20] merge-recursive: comment and reorder the merge_options fields Elijah Newren
2019-07-26 15:52 ` [PATCH v2 15/20] merge-recursive: avoid losing output and leaking memory holding that output Elijah Newren
2019-07-26 15:52 ` [PATCH v2 16/20] merge-recursive: split internal fields into a separate struct Elijah Newren
2019-07-26 15:52 ` [PATCH v2 17/20] merge-recursive: alphabetize include list Elijah Newren
2019-07-26 15:52 ` [PATCH v2 18/20] merge-recursive: rename MERGE_RECURSIVE_* to MERGE_VARIANT_* Elijah Newren
2019-07-26 15:52 ` [PATCH v2 19/20] merge-recursive: be consistent with assert Elijah Newren
2019-07-26 15:52 ` [PATCH v2 20/20] merge-recursive: provide a better label for diff3 common ancestor Elijah Newren
2019-08-15 21:40 ` [PATCH v3 00/24] Clean up merge API Elijah Newren
2019-08-15 21:40 ` [PATCH v3 01/24] merge-recursive: be consistent with assert Elijah Newren
2019-08-15 21:40 ` [PATCH v3 02/24] checkout: provide better conflict hunk description with detached HEAD Elijah Newren
2019-08-15 21:40 ` [PATCH v3 03/24] merge-recursive: enforce opt->ancestor != NULL when calling merge_trees() Elijah Newren
2019-08-16 21:05 ` Junio C Hamano
2019-08-15 21:40 ` [PATCH v3 04/24] merge-recursive: provide a better label for diff3 common ancestor Elijah Newren
2019-08-16 21:33 ` Junio C Hamano
2019-08-16 22:39 ` Elijah Newren
2019-08-15 21:40 ` [PATCH v3 05/24] merge-recursive: introduce an enum for detect_directory_renames values Elijah Newren
2019-08-15 21:40 ` [PATCH v3 06/24] merge-recursive: future-proof update_file_flags() against memory leaks Elijah Newren
2019-08-15 21:40 ` [PATCH v3 07/24] merge-recursive: remove another implicit dependency on the_repository Elijah Newren
2019-08-15 21:40 ` [PATCH v3 08/24] Ensure index matches head before invoking merge machinery, round N Elijah Newren
2019-08-15 21:40 ` [PATCH v3 09/24] merge-recursive: exit early if index != head Elijah Newren
2019-08-15 21:40 ` [PATCH v3 10/24] merge-recursive: remove useless parameter in merge_trees() Elijah Newren
2019-08-15 21:40 ` [PATCH v3 11/24] merge-recursive: don't force external callers to do our logging Elijah Newren
2019-08-15 21:40 ` [PATCH v3 12/24] cache-tree: share code between functions writing an index as a tree Elijah Newren
2019-08-16 22:01 ` Junio C Hamano
2019-08-16 22:39 ` Elijah Newren
2019-08-15 21:40 ` [PATCH v3 13/24] merge-recursive: fix some overly long lines Elijah Newren
2019-08-15 21:40 ` [PATCH v3 14/24] merge-recursive: use common name for ancestors/common/base_list Elijah Newren
2019-08-15 21:40 ` [PATCH v3 15/24] merge-recursive: rename 'mrtree' to 'result_tree', for clarity Elijah Newren
2019-08-15 21:40 ` [PATCH v3 16/24] merge-recursive: rename merge_options argument to opt in header Elijah Newren
2019-08-15 21:40 ` [PATCH v3 17/24] merge-recursive: move some definitions around to clean up the header Elijah Newren
2019-08-15 21:40 ` [PATCH v3 18/24] merge-recursive: consolidate unnecessary fields in merge_options Elijah Newren
2019-08-16 22:14 ` Junio C Hamano
2019-08-16 22:59 ` Elijah Newren
2019-08-16 23:24 ` Junio C Hamano
2019-08-15 21:40 ` [PATCH v3 19/24] merge-recursive: comment and reorder the merge_options fields Elijah Newren
2019-08-15 21:40 ` [PATCH v3 20/24] merge-recursive: avoid losing output and leaking memory holding that output Elijah Newren
2019-08-15 21:40 ` [PATCH v3 21/24] merge-recursive: split internal fields into a separate struct Elijah Newren
2019-08-16 21:19 ` SZEDER Gábor
2019-08-16 23:00 ` Elijah Newren
2019-08-16 22:17 ` Junio C Hamano
2019-08-15 21:40 ` [PATCH v3 22/24] merge-recursive: rename MERGE_RECURSIVE_* to MERGE_VARIANT_* Elijah Newren
2019-08-15 21:40 ` [PATCH v3 23/24] merge-recursive: add sanity checks for relevant merge_options Elijah Newren
2019-08-16 19:52 ` Junio C Hamano
2019-08-16 22:08 ` Elijah Newren
2019-08-16 23:15 ` Junio C Hamano
2019-08-16 19:59 ` Junio C Hamano
2019-08-16 22:09 ` Elijah Newren
2019-08-15 21:40 ` [PATCH v3 24/24] merge-recursive: alphabetize include list Elijah Newren
2019-08-17 18:41 ` [PATCH v4 00/24] Clean up merge API Elijah Newren
2019-08-17 18:41 ` [PATCH v4 01/24] merge-recursive: be consistent with assert Elijah Newren
2019-08-17 18:41 ` [PATCH v4 02/24] checkout: provide better conflict hunk description with detached HEAD Elijah Newren
2019-08-17 18:41 ` [PATCH v4 03/24] merge-recursive: enforce opt->ancestor != NULL when calling merge_trees() Elijah Newren
2019-08-17 18:41 ` [PATCH v4 04/24] merge-recursive: provide a better label for diff3 common ancestor Elijah Newren
2019-09-30 21:14 ` Jeff King
2019-09-30 21:19 ` Jeff King
2019-09-30 22:54 ` [PATCH] merge-recursive: fix the diff3 common ancestor label for virtual commits Elijah Newren
2019-10-01 6:56 ` Elijah Newren
2019-10-01 6:58 ` [PATCH v2] " Elijah Newren
2019-10-01 14:49 ` Jeff King
2019-10-01 18:17 ` [PATCH v3] " Elijah Newren
2019-10-07 2:51 ` Junio C Hamano
2019-10-07 15:52 ` [PATCH] merge-recursive: fix the fix to the diff3 common ancestor label Elijah Newren
2019-10-08 2:32 ` Junio C Hamano
2019-10-08 2:36 ` Junio C Hamano
2019-10-08 16:16 ` Elijah Newren
2019-08-17 18:41 ` [PATCH v4 05/24] merge-recursive: introduce an enum for detect_directory_renames values Elijah Newren
2019-08-17 18:41 ` [PATCH v4 06/24] merge-recursive: future-proof update_file_flags() against memory leaks Elijah Newren
2019-08-17 18:41 ` [PATCH v4 07/24] merge-recursive: remove another implicit dependency on the_repository Elijah Newren
2019-08-17 18:41 ` [PATCH v4 08/24] Ensure index matches head before invoking merge machinery, round N Elijah Newren
2019-09-02 23:01 ` Johannes Schindelin
2019-09-03 13:34 ` Johannes Schindelin
2019-09-03 18:17 ` Elijah Newren
2019-08-17 18:41 ` [PATCH v4 09/24] merge-recursive: exit early if index != head Elijah Newren
2019-08-17 18:41 ` [PATCH v4 10/24] merge-recursive: remove useless parameter in merge_trees() Elijah Newren
2019-08-17 18:41 ` [PATCH v4 11/24] merge-recursive: don't force external callers to do our logging Elijah Newren
2019-08-17 18:41 ` [PATCH v4 12/24] cache-tree: share code between functions writing an index as a tree Elijah Newren
2019-08-17 18:41 ` [PATCH v4 13/24] merge-recursive: fix some overly long lines Elijah Newren
2019-08-17 18:41 ` [PATCH v4 14/24] merge-recursive: use common name for ancestors/common/base_list Elijah Newren
2019-08-17 18:41 ` [PATCH v4 15/24] merge-recursive: rename 'mrtree' to 'result_tree', for clarity Elijah Newren
2019-08-17 18:41 ` [PATCH v4 16/24] merge-recursive: rename merge_options argument to opt in header Elijah Newren
2019-08-17 18:41 ` [PATCH v4 17/24] merge-recursive: move some definitions around to clean up the header Elijah Newren
2019-08-17 18:41 ` [PATCH v4 18/24] merge-recursive: consolidate unnecessary fields in merge_options Elijah Newren
2019-08-17 18:41 ` [PATCH v4 19/24] merge-recursive: comment and reorder the merge_options fields Elijah Newren
2019-08-17 18:41 ` [PATCH v4 20/24] merge-recursive: avoid losing output and leaking memory holding that output Elijah Newren
2019-08-17 18:41 ` [PATCH v4 21/24] merge-recursive: split internal fields into a separate struct Elijah Newren
2019-08-19 17:17 ` Junio C Hamano
2019-08-17 18:41 ` [PATCH v4 22/24] merge-recursive: rename MERGE_RECURSIVE_* to MERGE_VARIANT_* Elijah Newren
2019-08-17 18:41 ` [PATCH v4 23/24] merge-recursive: add sanity checks for relevant merge_options Elijah Newren
2019-08-17 18:41 ` [PATCH v4 24/24] merge-recursive: alphabetize include list Elijah Newren
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: http://vger.kernel.org/majordomo-info.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190726155258.28561-6-newren@gmail.com \
--to=newren@gmail.com \
--cc=Johannes.Schindelin@gmx.de \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://80x24.org/mirrors/git.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).