From: Martin von Zweigbergk <martinvonz@gmail.com>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>,
Martin von Zweigbergk <martinvonz@gmail.com>
Subject: [PATCH 01/19] reset $pathspec: no need to discard index
Date: Wed, 9 Jan 2013 00:15:58 -0800 [thread overview]
Message-ID: <1357719376-16406-2-git-send-email-martinvonz@gmail.com> (raw)
In-Reply-To: <1357719376-16406-1-git-send-email-martinvonz@gmail.com>
Since 34110cd (Make 'unpack_trees()' have a separate source and
destination index, 2008-03-06), the index no longer gets clobbered by
do_diff_cache() and we can remove the code for discarding and
re-reading it.
There are two paths to update_index_refresh() from cmd_reset(), but on
both paths, either read_cache() or read_cache_unmerged() will have
been called, so the call to read_cache() in this method is redundant
(although practically free).
This speeds up "git reset -- ." a little on the linux-2.6 repo (best
of five, warm cache):
Before After
real 0m0.093s 0m0.080s
user 0m0.040s 0m0.020s
sys 0m0.050s 0m0.050s
---
builtin/reset.c | 16 +---------------
1 file changed, 1 insertion(+), 15 deletions(-)
diff --git a/builtin/reset.c b/builtin/reset.c
index 915cc9f..8cc7c72 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -126,9 +126,6 @@ static int update_index_refresh(int fd, struct lock_file *index_lock, int flags)
fd = hold_locked_index(index_lock, 1);
}
- if (read_cache() < 0)
- return error(_("Could not read index"));
-
result = refresh_index(&the_index, (flags), NULL, NULL,
_("Unstaged changes after reset:")) ? 1 : 0;
if (write_cache(fd, active_cache, active_nr) ||
@@ -141,12 +138,6 @@ static void update_index_from_diff(struct diff_queue_struct *q,
struct diff_options *opt, void *data)
{
int i;
- int *discard_flag = data;
-
- /* do_diff_cache() mangled the index */
- discard_cache();
- *discard_flag = 1;
- read_cache();
for (i = 0; i < q->nr; i++) {
struct diff_filespec *one = q->queue[i]->one;
@@ -179,17 +170,15 @@ static int read_from_tree(const char *prefix, const char **argv,
unsigned char *tree_sha1, int refresh_flags)
{
struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
- int index_fd, index_was_discarded = 0;
+ int index_fd;
struct diff_options opt;
memset(&opt, 0, sizeof(opt));
diff_tree_setup_paths(get_pathspec(prefix, (const char **)argv), &opt);
opt.output_format = DIFF_FORMAT_CALLBACK;
opt.format_callback = update_index_from_diff;
- opt.format_callback_data = &index_was_discarded;
index_fd = hold_locked_index(lock, 1);
- index_was_discarded = 0;
read_cache();
if (do_diff_cache(tree_sha1, &opt))
return 1;
@@ -197,9 +186,6 @@ static int read_from_tree(const char *prefix, const char **argv,
diff_flush(&opt);
diff_tree_release_paths(&opt);
- if (!index_was_discarded)
- /* The index is still clobbered from do_diff_cache() */
- discard_cache();
return update_index_refresh(index_fd, lock, refresh_flags);
}
--
1.8.1.rc3.331.g1ef2165
next prev parent reply other threads:[~2013-01-09 8:22 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-09 8:15 [PATCH 00/19] reset improvements Martin von Zweigbergk
2013-01-09 8:15 ` Martin von Zweigbergk [this message]
2013-01-09 8:15 ` [PATCH 02/19] reset $pathspec: exit with code 0 if successful Martin von Zweigbergk
2013-01-09 8:16 ` [PATCH 03/19] reset.c: pass pathspec around instead of (prefix, argv) pair Martin von Zweigbergk
2013-01-09 11:42 ` Matt Kraai
2013-01-09 19:26 ` Junio C Hamano
2013-01-10 11:05 ` Duy Nguyen
2013-01-10 23:09 ` Junio C Hamano
2013-01-11 11:10 ` Duy Nguyen
2013-01-09 8:16 ` [PATCH 04/19] reset: don't allow "git reset -- $pathspec" in bare repo Martin von Zweigbergk
2013-01-09 19:32 ` Junio C Hamano
2013-01-10 8:24 ` Martin von Zweigbergk
2013-01-10 18:04 ` Junio C Hamano
2013-01-09 8:16 ` [PATCH 05/19] reset.c: extract function for parsing arguments Martin von Zweigbergk
2013-01-09 8:16 ` [PATCH 06/19] reset.c: remove unnecessary variable 'i' Martin von Zweigbergk
2013-01-09 19:39 ` Junio C Hamano
2013-01-10 8:41 ` Martin von Zweigbergk
2013-01-09 8:16 ` [PATCH 07/19] reset.c: extract function for updating {ORIG,}HEAD Martin von Zweigbergk
2013-01-09 11:54 ` Matt Kraai
2013-01-09 8:16 ` [PATCH 08/19] reset.c: share call to die_if_unmerged_cache() Martin von Zweigbergk
2013-01-09 19:48 ` Junio C Hamano
2013-01-10 8:51 ` Martin von Zweigbergk
2013-01-09 8:16 ` [PATCH 09/19] reset.c: replace switch by if-else Martin von Zweigbergk
2013-01-09 19:53 ` Junio C Hamano
2013-01-11 6:35 ` Martin von Zweigbergk
2013-01-11 17:12 ` Junio C Hamano
2013-01-09 8:16 ` [PATCH 10/19] reset --keep: only write index file once Martin von Zweigbergk
2013-01-09 19:55 ` Junio C Hamano
2013-01-09 8:16 ` [PATCH 11/19] reset: avoid redundant error message Martin von Zweigbergk
2013-01-09 8:16 ` [PATCH 12/19] reset.c: move update_index_refresh() call out of read_from_tree() Martin von Zweigbergk
2013-01-09 8:16 ` [PATCH 13/19] reset.c: move lock, write and commit out of update_index_refresh() Martin von Zweigbergk
2013-01-09 8:16 ` [PATCH 14/19] reset [--mixed]: don't write index file twice Martin von Zweigbergk
2013-01-09 8:16 ` [PATCH 15/19] reset.c: finish entire cmd_reset() whether or not pathspec is given Martin von Zweigbergk
2013-01-09 19:59 ` Junio C Hamano
2013-01-09 8:16 ` [PATCH 16/19] reset [--mixed] --quiet: don't refresh index Martin von Zweigbergk
2013-01-09 17:01 ` Jeff King
2013-01-09 18:43 ` Martin von Zweigbergk
2013-01-09 19:12 ` Junio C Hamano
2013-01-09 19:38 ` Martin von Zweigbergk
2013-01-09 20:05 ` Junio C Hamano
2013-01-09 8:16 ` [PATCH 17/19] reset $sha1 $pathspec: require $sha1 only to be treeish Martin von Zweigbergk
2013-01-09 20:23 ` Junio C Hamano
2013-01-09 8:16 ` [PATCH 18/19] reset: allow reset on unborn branch Martin von Zweigbergk
2013-01-09 8:16 ` [PATCH 19/19] reset [--mixed]: use diff-based reset whether or not pathspec was given Martin von Zweigbergk
2013-01-09 20:27 ` Junio C Hamano
2013-01-15 5:47 ` [PATCH v2 00/19] reset improvements Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 01/19] reset $pathspec: no need to discard index Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 02/19] reset $pathspec: exit with code 0 if successful Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 03/19] reset.c: pass pathspec around instead of (prefix, argv) pair Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 04/19] reset: don't allow "git reset -- $pathspec" in bare repo Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 05/19] reset.c: extract function for parsing arguments Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 06/19] reset.c: remove unnecessary variable 'i' Martin von Zweigbergk
[not found] ` <A5E8E180685CEF45AB9E737A010799805E00DD@cdnz-ex1.corp.cubic.cub>
2013-01-15 18:36 ` Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 07/19] reset.c: extract function for updating {ORIG_,}HEAD Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 08/19] reset.c: share call to die_if_unmerged_cache() Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 09/19] reset --keep: only write index file once Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 10/19] reset: avoid redundant error message Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 11/19] reset.c: replace switch by if-else Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 12/19] reset.c: move update_index_refresh() call out of read_from_tree() Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 13/19] reset.c: move lock, write and commit out of update_index_refresh() Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 14/19] reset [--mixed]: only write index file once Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 15/19] reset.c: finish entire cmd_reset() whether or not pathspec is given Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 16/19] reset.c: inline update_index_refresh() Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 17/19] reset $sha1 $pathspec: require $sha1 only to be treeish Martin von Zweigbergk
2013-01-16 18:00 ` [PATCH v2 17/19] fixup! " Martin von Zweigbergk
2013-01-16 18:08 ` Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 18/19] reset: allow reset on unborn branch Martin von Zweigbergk
2013-01-15 5:47 ` [PATCH v2 19/19] reset [--mixed]: use diff-based reset whether or not pathspec was given Martin von Zweigbergk
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