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From: Teng Long <dyroneteng@gmail.com>
To: dyroneteng@gmail.com
Cc: avarab@gmail.com, git@vger.kernel.org, gitster@pobox.com,
	sunshine@sunshineco.com, tenglong.tl@alibaba-inc.com
Subject: [PATCH v9 1/6] notes.c: cleanup 'strbuf_grow' call in 'append_edit'
Date: Fri, 28 Apr 2023 17:23:29 +0800	[thread overview]
Message-ID: <0634434e2a3e40ef4af5013349202491d55fe1d7.1682671758.git.dyroneteng@gmail.com> (raw)
In-Reply-To: <cover.1682671758.git.dyroneteng@gmail.com>

From: Teng Long <dyroneteng@gmail.com>

Let's cleanup the unnecessary 'strbuf_grow' call in 'append_edit'. This
"strbuf_grow(&d.buf, size + 1);" is prepared for insert a blank line if
needed, but actually when inserting, "strbuf_insertstr(&d.buf, 0,
"\n");" will do the "grow" for us.

348f199b (builtin-notes: Refactor handling of -F option to allow
combining -m and -F, 2010-02-13) added these to mimic the code
introduced by 2347fae5 (builtin-notes: Add "append" subcommand for
appending to note objects, 2010-02-13) that reads in previous note
before the message.  And the resulting code with explicit sizing is
carried to this day.

In the context of reading an existing note in, exact sizing may have
made sense, but because the resulting note needs cleansing with
stripspace() when appending with this option, such an exact sizing
does not buy us all that much in practice.

It may help avoiding overallocation due to ALLOC_GROW() slop, but
nobody can feed so many long messages for it to matter from the
command line.

Signed-off-by: Teng Long <dyroneteng@gmail.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
---
 builtin/notes.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/builtin/notes.c b/builtin/notes.c
index 4ff44f1e..c501c6ee 100644
--- a/builtin/notes.c
+++ b/builtin/notes.c
@@ -219,7 +219,6 @@ static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
 
 	BUG_ON_OPT_NEG(unset);
 
-	strbuf_grow(&d->buf, strlen(arg) + 2);
 	if (d->buf.len)
 		strbuf_addch(&d->buf, '\n');
 	strbuf_addstr(&d->buf, arg);
@@ -623,7 +622,6 @@ static int append_edit(int argc, const char **argv, const char *prefix)
 		char *prev_buf = repo_read_object_file(the_repository, note,
 						       &type, &size);
 
-		strbuf_grow(&d.buf, size + 1);
 		if (d.buf.len && prev_buf && size)
 			strbuf_insertstr(&d.buf, 0, "\n");
 		if (prev_buf && size)
-- 
2.40.0.358.g2947072e.dirty


  reply	other threads:[~2023-04-28  9:23 UTC|newest]

Thread overview: 186+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-13  5:56 [RFC PATCH 0/2] notes.c: introduce "--no-blankline" option Teng Long
2022-10-13  5:56 ` [RFC PATCH 1/2] " Teng Long
2022-10-13  6:06   ` Junio C Hamano
2022-10-17 13:19     ` Teng Long
2022-10-13  9:31   ` Ævar Arnfjörð Bjarmason
2022-10-17 13:33     ` Teng Long
2022-10-13  5:56 ` [RFC PATCH 2/2] notes.c: fixed tip when target and append note are both empty Teng Long
2022-10-13  9:36   ` Ævar Arnfjörð Bjarmason
2022-10-13 10:10     ` Phillip Wood
2022-10-13 10:23       ` Ævar Arnfjörð Bjarmason
2022-10-15 19:40         ` Phillip Wood
2022-10-18  3:25       ` Teng Long
2022-10-18  8:08       ` Teng Long
2022-10-18  3:11     ` Teng Long
2022-10-18  9:23       ` Ævar Arnfjörð Bjarmason
2022-11-07 13:57 ` [PATCH v2 0/3] notes.c: introduce "--blank-line" option Teng Long
2022-11-07 13:57   ` [PATCH v2 1/3] " Teng Long
2022-11-07 14:45     ` Ævar Arnfjörð Bjarmason
2022-11-07 15:45       ` Eric Sunshine
2022-11-07 17:22         ` Ævar Arnfjörð Bjarmason
2022-11-07 21:46           ` Taylor Blau
2022-11-07 22:36             ` Ævar Arnfjörð Bjarmason
2022-11-08  0:32               ` Taylor Blau
2022-11-08  3:45       ` Teng Long
2022-11-08 13:06       ` Teng Long
2022-11-08 13:22         ` Ævar Arnfjörð Bjarmason
2022-11-09  6:35           ` Teng Long
2022-11-07 15:06     ` Ævar Arnfjörð Bjarmason
2022-11-08  6:32       ` Teng Long
2022-11-07 21:47     ` Taylor Blau
2022-11-08  7:36       ` Teng Long
2022-11-07 13:57   ` [PATCH v2 2/3] notes.c: fixed tip when target and append note are both empty Teng Long
2022-11-07 14:40     ` Ævar Arnfjörð Bjarmason
2022-11-07 21:51       ` Taylor Blau
2022-11-07 22:33         ` Ævar Arnfjörð Bjarmason
2022-11-07 22:45           ` Taylor Blau
2022-11-08  8:55           ` Teng Long
2022-11-07 13:57   ` [PATCH v2 3/3] notes.c: drop unreachable code in "append_edit()" Teng Long
2022-11-07 14:41     ` Ævar Arnfjörð Bjarmason
2022-11-07 14:57   ` [PATCH v2 0/3] notes.c: introduce "--blank-line" option Ævar Arnfjörð Bjarmason
2022-11-09  7:05     ` Teng Long
2022-11-09  7:06     ` Teng Long
2022-11-09  9:06   ` [PATCH v3 0/5] notes.c: introduce "--no-blank-line" option Teng Long
2022-11-09  9:06     ` [PATCH v3 1/5] notes.c: cleanup 'strbuf_grow' call in 'append_edit' Teng Long
2022-11-09  9:06     ` [PATCH v3 2/5] notes.c: cleanup for "designated init" and "char ptr init" Teng Long
2022-11-09  9:06     ` [PATCH v3 3/5] notes.c: drop unreachable code in 'append_edit()' Teng Long
2022-11-09  9:06     ` [PATCH v3 4/5] notes.c: provide tips when target and append note are both empty Teng Long
2022-11-09  9:06     ` [PATCH v3 5/5] notes.c: introduce "--no-blank-line" option Teng Long
2022-11-28 14:20     ` [PATCH v3 0/5] " Teng Long
2022-11-29  1:10       ` Junio C Hamano
2022-11-29 22:53         ` Taylor Blau
2022-11-29 12:57     ` Teng Long
2022-11-29 13:19       ` Junio C Hamano
2022-12-15 12:48         ` Teng Long
2022-12-19  3:03           ` Eric Sunshine
2022-12-21  9:16             ` Teng Long
2022-12-21 11:35               ` Junio C Hamano
2022-12-22  9:30             ` Teng Long
2022-12-23  1:36               ` Eric Sunshine
2023-01-12  2:48     ` [PATCH v4 0/5] notes.c: introduce "--separator" optio Teng Long
2023-01-12  2:48       ` [PATCH v4 1/5] notes.c: cleanup 'strbuf_grow' call in 'append_edit' Teng Long
2023-01-15  4:53         ` Eric Sunshine
2023-01-28 11:22           ` Teng Long
2023-01-12  2:48       ` [PATCH v4 2/5] notes.c: cleanup for "designated init" and "char ptr init" Teng Long
2023-01-12  9:51         ` Ævar Arnfjörð Bjarmason
2023-01-28 11:33           ` Teng Long
2023-01-12  2:48       ` [PATCH v4 3/5] notes.c: drop unreachable code in 'append_edit()' Teng Long
2023-01-15 20:59         ` Eric Sunshine
2023-01-15 21:10           ` Eric Sunshine
2023-01-28 11:50           ` Teng Long
2023-01-30  5:38             ` Eric Sunshine
2023-02-01  8:08               ` Teng Long
2023-01-12  2:48       ` [PATCH v4 4/5] notes.c: provide tips when target and append note are both empty Teng Long
2023-01-12  9:52         ` Ævar Arnfjörð Bjarmason
2023-01-15 21:28         ` Eric Sunshine
2023-01-12  2:48       ` [PATCH v4 5/5] notes.c: introduce "--separator" option Teng Long
2023-01-12  9:53         ` Ævar Arnfjörð Bjarmason
2023-01-15 22:04           ` Eric Sunshine
2023-01-15 22:15         ` Eric Sunshine
2023-02-16 13:05       ` [PATCH v5 0/3] " Teng Long
2023-02-16 13:05         ` [PATCH v5 1/3] notes.c: cleanup 'strbuf_grow' call in 'append_edit' Teng Long
2023-02-16 18:39           ` Junio C Hamano
2023-02-20  3:34             ` Teng Long
2023-02-16 13:05         ` [PATCH v5 2/3] notes.c: cleanup for "designated init" Teng Long
2023-02-16 18:39           ` Junio C Hamano
2023-02-16 13:05         ` [PATCH v5 3/3] notes.c: introduce "--separator" option Teng Long
2023-02-16 23:22           ` Junio C Hamano
2023-02-20 14:00             ` Teng Long
2023-02-21 21:31               ` Junio C Hamano
2023-02-22  8:17                 ` Teng Long
2023-02-22 23:15                   ` Junio C Hamano
2023-02-23  7:29         ` [PATCH v6 0/3] " Teng Long
2023-02-23  7:29           ` [PATCH v6 1/3] notes.c: cleanup 'strbuf_grow' call in 'append_edit' Teng Long
2023-02-23  7:29           ` [PATCH v6 2/3] notes.c: cleanup for "designated init" Teng Long
2023-02-23  7:29           ` [PATCH v6 3/3] notes.c: introduce '--separator=<paragraph-break>' option Teng Long
2023-02-23 18:21             ` Junio C Hamano
2023-02-28 14:11               ` Teng Long
2023-02-25 21:30             ` Junio C Hamano
2023-02-28 14:14               ` Teng Long
2023-03-27 13:13           ` [PATCH v6 0/3] notes.c: introduce "--separator" option Teng Long
2023-03-28 14:28           ` [PATCH v7 0/4] " Teng Long
2023-03-28 14:28             ` [PATCH v7 1/4] notes.c: cleanup 'strbuf_grow' call in 'append_edit' Teng Long
2023-03-28 14:28             ` [PATCH v7 2/4] notes.c: cleanup for "designated init" Teng Long
2023-03-29 22:17               ` Junio C Hamano
2023-03-28 14:28             ` [PATCH v7 3/4] notes.c: introduce '--separator=<paragraph-break>' option Teng Long
2023-03-28 15:37               ` Junio C Hamano
2023-03-29 14:15                 ` Teng Long
2023-03-29 21:48                   ` Junio C Hamano
2023-04-13  9:36                     ` Teng Long
2023-03-28 14:28             ` [PATCH v7 4/4] notes.c: don't do stripespace when parse file arg Teng Long
2023-03-28 15:54               ` Junio C Hamano
2023-03-29 12:06                 ` Teng Long
2023-03-29 16:21                   ` Junio C Hamano
2023-04-25 13:34             ` [PATCH 0/6] notes.c: introduce "--separator" option Teng Long
2023-04-25 13:34               ` [PATCH v8 1/6] notes.c: cleanup 'strbuf_grow' call in 'append_edit' Teng Long
2023-04-25 13:34               ` [PATCH v8 2/6] notes.c: use designated initializers for clarity Teng Long
2023-04-25 13:34               ` [PATCH v8 3/6] t3321: add test cases about the notes stripspace behavior Teng Long
2023-04-25 16:25                 ` Junio C Hamano
2023-04-27  3:47                   ` Teng Long
2023-04-25 13:34               ` [PATCH v8 4/6] notes.c: introduce '--separator=<paragraph-break>' option Teng Long
2023-04-25 17:34                 ` Junio C Hamano
2023-04-27  7:21                   ` Teng Long
2023-04-27 18:21                     ` Junio C Hamano
2023-04-25 17:35                 ` Junio C Hamano
2023-04-25 13:34               ` [PATCH v8 5/6] notes.c: append separator instead of insert by pos Teng Long
2023-04-25 17:47                 ` Junio C Hamano
2023-04-27  7:51                   ` Teng Long
2023-04-25 13:34               ` [PATCH v8 6/6] notes.c: introduce "--[no-]stripspace" option Teng Long
2023-04-25 17:49                 ` Junio C Hamano
2023-04-28  7:40                   ` Teng Long
2023-04-28 18:21                     ` Junio C Hamano
2023-04-28  9:23               ` [PATCH v9 0/6] notes.c: introduce "--separator" option Teng Long
2023-04-28  9:23                 ` Teng Long [this message]
2023-04-28  9:23                 ` [PATCH v9 2/6] notes.c: use designated initializers for clarity Teng Long
2023-04-28  9:23                 ` [PATCH v9 3/6] t3321: add test cases about the notes stripspace behavior Teng Long
2023-04-28  9:23                 ` [PATCH v9 4/6] notes.c: introduce '--separator=<paragraph-break>' option Teng Long
2023-04-28 20:44                   ` Junio C Hamano
2023-05-06  9:12                     ` Teng Long
2023-05-06  9:22                       ` Teng Long
2023-05-10 19:19                   ` Kristoffer Haugsbakk
2023-05-12  4:07                     ` Teng Long
2023-05-12  7:29                       ` Kristoffer Haugsbakk
2023-05-16 17:00                       ` Junio C Hamano
2023-05-17  3:58                         ` Teng Long
2023-05-17 15:32                           ` Junio C Hamano
2023-06-14  1:02                   ` Junio C Hamano
2023-06-14  1:10                     ` [PATCH] notes: do not access before the beginning of an array Junio C Hamano
2023-06-14  1:41                     ` [PATCH v9 4/6] notes.c: introduce '--separator=<paragraph-break>' option Eric Sunshine
2023-06-14  2:07                       ` Junio C Hamano
2023-06-15  7:13                         ` Jeff King
2023-06-15 19:15                           ` Junio C Hamano
2023-06-19  6:08                             ` Teng Long
2023-06-20 20:36                               ` Junio C Hamano
2023-06-21  2:50                                 ` Teng Long
2023-04-28  9:23                 ` [PATCH v9 5/6] notes.c: append separator instead of insert by pos Teng Long
2023-04-28  9:23                 ` [PATCH v9 6/6] notes.c: introduce "--[no-]stripspace" option Teng Long
2023-04-28 20:46                 ` [PATCH v9 0/6] notes.c: introduce "--separator" option Junio C Hamano
2023-05-01 22:29                 ` Junio C Hamano
2023-05-18 12:02                 ` [PATCH v10 " Teng Long
2023-05-18 12:02                   ` [PATCH v10 1/6] notes.c: cleanup 'strbuf_grow' call in 'append_edit' Teng Long
2023-05-18 12:02                   ` [PATCH v10 2/6] notes.c: use designated initializers for clarity Teng Long
2023-05-18 12:02                   ` [PATCH v10 3/6] t3321: add test cases about the notes stripspace behavior Teng Long
2023-05-18 12:02                   ` [PATCH v10 4/6] notes.c: introduce '[--[no-]separator|--separator=<paragraph-break>]' option Teng Long
2023-05-18 14:34                     ` Kristoffer Haugsbakk
2023-05-20 10:41                       ` Teng Long
2023-05-20 16:12                         ` Kristoffer Haugsbakk
2023-05-19  0:54                     ` Jeff King
2023-05-27  7:17                       ` Teng Long
2023-05-27 17:19                         ` Jeff King
2023-05-29 11:48                           ` Teng Long
2023-05-18 12:02                   ` [PATCH v10 5/6] notes.c: append separator instead of insert by pos Teng Long
2023-05-18 12:02                   ` [PATCH v10 6/6] notes.c: introduce "--[no-]stripspace" option Teng Long
2023-05-18 13:56                   ` [PATCH v10 0/6] notes.c: introduce "--separator" option Kristoffer Haugsbakk
2023-05-20 10:22                     ` Teng Long
2023-05-18 15:17                   ` Junio C Hamano
2023-05-20 10:59                     ` Teng Long
2023-05-27  7:57                   ` [PATCH v11 0/7] notes.c: introduce "--separator" Teng Long
2023-05-27  7:57                     ` [PATCH v11 1/7] notes.c: cleanup 'strbuf_grow' call in 'append_edit' Teng Long
2023-05-27  7:57                     ` [PATCH v11 2/7] notes.c: use designated initializers for clarity Teng Long
2023-05-27  7:57                     ` [PATCH v11 3/7] t3321: add test cases about the notes stripspace behavior Teng Long
2023-05-27  7:57                     ` [PATCH v11 4/7] notes.c: introduce '--separator=<paragraph-break>' option Teng Long
2023-05-27  7:57                     ` [PATCH v11 5/7] notes.c: append separator instead of insert by pos Teng Long
2023-05-27  7:57                     ` [PATCH v11 6/7] notes.c: introduce "--[no-]stripspace" option Teng Long
2023-05-27  7:57                     ` [PATCH v11 7/7] notes: introduce "--no-separator" option Teng Long
2023-06-01  5:50                     ` [PATCH v11 0/7] notes.c: introduce "--separator" Junio C Hamano
2023-06-03 10:01                       ` Teng Long

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