Since the filesystem ext4 is now defined as stable in Linux v2.6.28,
and ext4 supports nanonsecond resolution timestamps natively, it is
time to make USE_NSEC work as expected.
This will make racy git situations less likely to happen. For 'git
checkout' this means it will be less likely that we have to open, read
the contents of the file into RAM, and check if file is really
modified or not. The result sould be a litle less used CPU time, less
pagefaults and a litle faster program, at least for 'git checkout'.
Since the number of possible racy git situations would increase when
disks gets faster, this patch would be more and more helpfull as times
go by. For a fast Solid State Disk, this patch should be helpfull.
Note that, when file operations starts to take less than 1 nanosecond,
one would again start to get more racy git situations.
For more info on racy git, see Documentation/technical/racy-git.txt
For more info on ext4, see http://kernelnewbies.org/Ext4
Signed-off-by: Kjetil Barvik <barvik@broadpark.no>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
'struct cache' does not have a 'usec' member, but a 'unsigned int
nsec' member. Simmilar 'struct stat' does not have a 'st_mtim.usec'
member, and we should instead use 'st_mtim.tv_nsec'.
Signed-off-by: Kjetil Barvik <barvik@broadpark.no>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We were not testing the output of "git branch" anywhere.
Not only does this not protect us against regressions in the
output, but we are not exercising code paths which may have
bugs (such as the one fixed by 45e2b61).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 45e2b61 fixed the initialization of a "len" struct
parameter via strlen. We can use that to clean up what is
now 3 strlens in a 6-line sequence.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Below is oprofile output from GIT command 'git chekcout -q my-v2.6.25'
(move from tag v2.6.27 to tag v2.6.25 of the Linux kernel):
CPU: Core 2, speed 1999.95 MHz (estimated)
Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a unit
mask of 0x00 (Unhalted core cycles) count 20000
Counted INST_RETIRED_ANY_P events (number of instructions retired) with a
unit mask of 0x00 (No unit mask) count 20000
CPU_CLK_UNHALT...|INST_RETIRED:2...|
samples| %| samples| %|
------------------------------------
409247 100.000 342878 100.000 git
CPU_CLK_UNHALT...|INST_RETIRED:2...|
samples| %| samples| %|
------------------------------------
260476 63.6476 257843 75.1996 libz.so.1.2.3
100876 24.6492 64378 18.7758 kernel-2.6.28.4_2.vmlinux
30850 7.5382 7874 2.2964 libc-2.9.so
14775 3.6103 8390 2.4469 git
2020 0.4936 4325 1.2614 libcrypto.so.0.9.8
191 0.0467 32 0.0093 libpthread-2.9.so
58 0.0142 36 0.0105 ld-2.9.so
1 2.4e-04 0 0 libldap-2.3.so.0.2.31
Detail list of the top 20 function entries (libz counted in one blob):
CPU_CLK_UNHALTED INST_RETIRED_ANY_P
samples % samples % image name symbol name
260476 63.6862 257843 75.2725 libz.so.1.2.3 /lib/libz.so.1.2.3
16587 4.0555 3636 1.0615 libc-2.9.so memcpy
7710 1.8851 277 0.0809 libc-2.9.so memmove
3679 0.8995 1108 0.3235 kernel-2.6.28.4_2.vmlinux d_validate
3546 0.8670 2607 0.7611 kernel-2.6.28.4_2.vmlinux __getblk
3174 0.7760 1813 0.5293 libc-2.9.so _int_malloc
2396 0.5858 3681 1.0746 kernel-2.6.28.4_2.vmlinux copy_to_user
2270 0.5550 2528 0.7380 kernel-2.6.28.4_2.vmlinux __link_path_walk
2205 0.5391 1797 0.5246 kernel-2.6.28.4_2.vmlinux ext4_mark_iloc_dirty
2103 0.5142 1203 0.3512 kernel-2.6.28.4_2.vmlinux find_first_zero_bit
2077 0.5078 997 0.2911 kernel-2.6.28.4_2.vmlinux do_get_write_access
2070 0.5061 514 0.1501 git cache_name_compare
2043 0.4995 1501 0.4382 kernel-2.6.28.4_2.vmlinux rcu_irq_exit
2022 0.4944 1732 0.5056 kernel-2.6.28.4_2.vmlinux __ext4_get_inode_loc
2020 0.4939 4325 1.2626 libcrypto.so.0.9.8 /usr/lib/libcrypto.so.0.9.8
1965 0.4804 1384 0.4040 git patch_delta
1708 0.4176 984 0.2873 kernel-2.6.28.4_2.vmlinux rcu_sched_grace_period
1682 0.4112 727 0.2122 kernel-2.6.28.4_2.vmlinux sysfs_slab_alias
1659 0.4056 290 0.0847 git find_pack_entry_one
1480 0.3619 1307 0.3816 kernel-2.6.28.4_2.vmlinux ext4_writepage_trans_blocks
Notice the memmove line, where the CPU did 7710 / 277 = 27.8 cycles
per instruction, and compared to the total cycles spent inside the
source code of GIT for this command, all the memmove() calls
translates to (7710 * 100) / 14775 = 52.2% of this.
Retesting with a GIT program compiled for gcov usage, I found out that
the memmove() calls came from remove_index_entry_at() in read-cache.c,
where we have:
memmove(istate->cache + pos,
istate->cache + pos + 1,
(istate->cache_nr - pos) * sizeof(struct cache_entry *));
remove_index_entry_at() is called 4902 times from check_updates() in
unpack-trees.c, and each time called we move each cache_entry pointers
(from the removed one) one step to the left.
Since we have 28828 entries in the cache this time, and if we on
average move half of them each time, we in total move approximately
4902 * 0.5 * 28828 * 4 = 282 629 712 bytes, or twice this amount if
each pointer is 8 bytes (64 bit).
OK, is seems that the function check_updates() is called 28 times, so
the estimated guess above had been more correct if check_updates() had
been called only once, but the point is: we get lots of bytes moved.
To fix this, and use an O(N) algorithm instead, where N is the number
of cache_entries, we delete/remove all entries in one loop through all
entries.
From a retest, the new remove_marked_cache_entries() from the patch
below, ended up with the following output line from oprofile:
46 0.0105 15 0.0041 git remove_marked_cache_entries
If we can trust the numbers from oprofile in this case, we saved
approximately ((7710 - 46) * 20000) / (2 * 1000 * 1000 * 1000) = 0.077
seconds CPU time with this fix for this particular test. And notice
that now the CPU did only 46 / 15 = 3.1 cycles/instruction.
Signed-off-by: Kjetil Barvik <barvik@broadpark.no>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
tests: fix "export var=val"
Skip timestamp differences for diff --no-index
Documentation/git-push: --all, --mirror, --tags can not be combined
Some shells do not like "export var=val"; the right way to write
it is to do an assignment and then export just the variable name.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The improved error handling catches a bug in filter-branch when using
-d pointing to a path outside any git repository:
$ git filter-branch -d /tmp/foo master
fatal: Not a git repository (or any of the parent directories): .git
This error message comes from git for-each-ref in line 224. GIT_DIR is
set correctly by git-sh-setup (to the foo.git repository), but not
exported (yet).
Signed-off-by: Lars Noschinski <lars@public.noschinski.de>
Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It does not make sense to provide multiple upstream branches to either
git pull --rebase, or to git rebase, so disallow both.
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
By having flags represented as bits in the new member variable 'flags',
it will be easier to use parse_options when dir_struct is involved.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We display empty diffs for files whose timestamps have changed.
Usually, refreshing the index makes those empty diffs go away.
However, when not using the index they are not very useful and
there is no option to suppress them.
This forces on the skip_stat_unmatch option for diff --no-index,
suppressing any empty diffs. This option is also used for diffs
against the index when "diff.autorefreshindex" is set, but that
option does not apply to diff --no-index.
Signed-off-by: Michael Spang <mspang@uwaterloo.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The underlying plumbing commands are not run with -z option, so the paths
returned from them need to be unquoted as needed.
Remove the now stale BUGS section from git-add documentaiton as suggested
by Teemu Likonen.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Ward Wouts reports that git-svn barfed like this:
Unable to parse date: 2004-03-09T09:44:33.Z at /usr/bin/git-svn line 3995
The parse_svn_date sub expects there always are one or more digits after
the decimal point to record fractional seconds, but this example does not
and results in a failure like this.
The fix is based on the original fix by the reporter, further cleaned up.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Eric Wong <normalperson@yhbt.net>
When a feature like "blame" is permitted to be overridden in the
repository configuration but it is not actually set in the repository,
a warning is emitted due to the undefined value of the repository
configuration, even though it's a perfectly normal condition.
Emitting warning is grounds for test failure in the gitweb test
script.
This error was caused by rewrite of git_get_project_config from using
"git config [<type>] <name>" for each individual configuration
variable checked to parsing "git config --list --null" output in
commit b201927 (gitweb: Read repo config using 'git config -z -l').
Earlier version of git_get_project_config was returning empty string
if variable do not exist in config; newer version is meant to return
undef in this case, therefore change in feature_bool was needed.
Additionally config_to_* subroutines were meant to be invoked only if
configuration variable exists; therefore we added early return to
git_get_project_config: it now returns no value if variable does not
exists in config. Otherwise config_to_* subroutines (config_to_bool
in paryicular) wouldn't be able to distinguish between the case where
variable does not exist and the case where variable doesn't have value
(the "[section] noval" case, which evaluates to true for boolean).
While at it fix bug in config_to_bool, where checking if $val is
defined (if config variable has value) was done _after_ stripping
leading and trailing whitespace, which lead to 'Use of uninitialized
value' warning.
Add test case for features overridable but not overriden in repo
config, and case for no value boolean configuration variable.
Signed-off-by: Marcel M. Cary <marcel@oak.homeunix.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While b259f09 made git-push output a better error message for 'git-push
--all --tags', this commit fixes the synopsis in the documentation.
Inconsistency spotted and fix suggested by Jari Aalto through
http://bugs.debian.org/502567
Signed-off-by: Gerrit Pape <pape@smarden.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The gitk completion only shows --merge if MERGE_HEAD is present.
Do it the same way for git-log completion.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Refactor options that are useful for more than one of them into a
variable used by the relevant completions. This has the effect of
adding the following options to git-log:
--branches --tags --remotes --first-parent --dense --sparse
--simplify-merges --simplify-by-decoration --first-parent
--no-merges
The following to git-shortlog:
--branches --tags --remotes --first-parent
And the following to gitk:
--branches --tags --remotes --first-parent --no-merges --max-count=
--max-age= --since= --after= --min-age= --until= --before= --dense
--sparse --full-history --simplify-merges --simplify-by-decoration
--left-right
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A recent addition to the ref_item struct was not taken care of, leading
to a segmentation fault when accessing the (uninitialized) "dest" member.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
CGI::url() has some issues when rebuilding the script URL if the script
is a DirectoryIndex.
One of these issue is the inability to strip PATH_INFO, which is why
we had to do it ourselves.
Another issue is that the resulting URL cannot be used for the <base>
tag: it works if we're the DirectoryIndex at the root level, but not
otherwise.
We fix this by building the proper base URL ourselves, and improve the
comment about the need to strip PATH_INFO manually while we're at it.
Additionally t/t9500-gitweb-standalone-no-errors.sh had to be modified
to set SCRIPT_NAME variable (CGI standard states that it MUST be set,
and now gitweb uses it if PATH_INFO is not empty, as is the case for
some of tests in t9500).
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
'git svn' got some new subcommands and otions in the last couple of
months. This patch adds completion support for them.
In particular:
* 'fetch', 'clone', etc.: '--ignore-paths='
* 'init' and 'clone': '--prefix=', '--use-log-author',
'--add-author-from'
* 'dcommit': '--commit-url', '--revision'
* 'log': '--color'
* 'rebase': '--dry-run'
* 'branch', 'tag', 'blame', 'migrate' subcommands and their options
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Namely: '--commit', '--stat', '--no-squash', '--ff', '--no-ff'.
One might wonder why add options that specify the default behaviour
anyway (e.g. '--commit', '--no-squash', etc.). Users can override the
default with config options (e.g. 'branch.<name>.mergeoptions',
'merge.log'), but sometimes might still need the default behaviour.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the new svn root URL given with the svn-remote.<repo>.rewriteRoot config option
(or by the --rewrite-root option to 'git svn init') contains a username
(such as 'svn+ssh://username@example.com/repo'), find_by_url() cannot find
the repository URL, because the URL contained in the commit message does have
the username removed.
Signed-off-by: Dévai Tamás <devait@mailbox.sk>
Acked-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While all of the strings passed to warning() are, in fact, literals, the
compiler doesn't recognize them as such because it doesn't see through
the loop used to iterate over them:
builtin-receive-pack.c: In function 'warn_unconfigured_deny':
builtin-receive-pack.c:247: warning: format not a string literal and no format arguments
builtin-receive-pack.c: In function 'warn_unconfigured_deny_delete_current':
builtin-receive-pack.c:273: warning: format not a string literal and no format arguments
Calm the compiler by adding easily recognizable format string literals.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* ms/mailmap:
Move mailmap documentation into separate file
Change current mailmap usage to do matching on both name and email of author/committer.
Add map_user() and clear_mailmap() to mailmap
Add find_insert_index, insert_at_index and clear_func functions to string_list
Add mailmap.file as configurational option for mailmap location
After 753bc91 ("Remove the requirement opaquelocktoken uri scheme"),
lock tokens are in the URI forms in which they are received from the
server, eg. 'opaquelocktoken:', 'urn:uuid:'.
However, "start_put" (and consequently "start_move"), which attempts to
create a unique temporary file using the UUID of the lock token,
inadvertently uses the lock token in its URI form. These file
operations on the server may not be successful (specifically, in
Windows), due to the colon ':' character from the URI form of the lock
token in the file path.
This patch uses a hash of the lock token instead, guaranteeing only
"safe" characters (a-f, 0-9) are used in the file path.
The token's hash is generated when the lock token is received from the
server in handle_new_lock_ctx, minimizing the number of times of
hashing.
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Many e-mail based development communities require non-flowed text to carry
patches to prevent whitespaces from getting mangled, but there is no easy
way to tell Thunderbird MUA not to use format=flowed, unless you configure
it to do so unconditionally for all outgoing mails.
A workaround for users who use git-imap-send is to wrap the patch in "pre"
element in the draft folder as an HTML message, and tell Thunderbird to
send "text only". Thunderbird turns such a message into a non-flowed
plain text when sending it out, which is what we want for patch e-mails.
Signed-off-by: Jeremy White <jwhite@codeweavers.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since 6564828 (git-send-email: Generalize auto-cc recipient
mechanism., 2007-12-25) we can suppress automatic Cc generation
separately for each of the possible address sources. However,
--suppress-cc=sob suppressed both SOB lines and body (but not header)
Cc lines, contrary to the name.
Change --suppress-cc=sob to mean only SOB lines, and add separate
choices 'bodycc' (body Cc lines) and 'body' (both 'sob' and 'bodycc').
The option --no-signed-off-by-cc now acts like --suppress-cc=sob,
which is not backwards compatible but matches the name of the option.
Also update the documentation and add a few tests.
Original patch by me. Revised by Thomas Rast, who contributed the
documentation and test updates.
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When git format-patch is given multiple --cc arguments, it generates a
Cc header that looks like:
Cc: first@example.com,
second@example.com,
third@example.com
Before this commit, send-email was unable to handle such a message as it
did not handle folded header lines, nor multiple recipients in a Cc
line.
This patch:
- Unfolds header lines by pre-processing the header before extracting
any of its fields.
- Handles Cc lines with multiple recipients.
- Adds use of Mail::Address if available for splitting Cc line and
the "Who should the emails be sent to?" prompt", with fall back to
existing split_addrs() function.
- Tests the new functionality and adds two tests for detecting whether
"From:" appears correctly in message body when patch author differs
from patch sender.
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
send-email is supposed to be able to run from outside a repo. This
ability was broken by commits caf0c3d6 (make the message file name more
specific) and 5df9fcf6 (interpret unknown files as revision lists).
This commit provides a fix for both.
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Extend t1500 with tests of 'git rev-parse --git-dir' when invoked from
other directories of the repository or the work tree.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 72183cb2 (Fix gitdir detection when in subdir of
gitdir, 2009-01-16) added a test to 't1501-worktree' to check the
behaviour of 'git rev-parse --git-dir' in a special case. However,
t1501 is about testing separate work tree setups, and not about basic
'rev-parse' functionality, which is tested in t1500-rev-parse.
Therefore, this patch moves that test to t1500.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Both rerere.c and builtin-rerere.c define the static functions
rr_path() and has_resolution() the exact same way. To eliminate this
code duplication this patch turns the functions in rerere.c
non-static, and makes builtin-rerere.c use them. Also, since this
puts these two functions into the global namespace, rename them to
rerere_path() and has_rerere_resolution(), respectively, and rename
their "name" parameter to "hex", because it better reflects what that
parameter actually is.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a section about how to shrink a repository's size after running
git-filter-branch to remove large blobs from history.
This comes up every week or so on IRC, and the commands required to
handle every case are not very newbie-friendly, so hopefully writing
them down somewhere leads to fewer questions.
It may seem contradictory to document fallbacks for older Gits in
newer docs, but we want to point people at this as a FAQ answer, and
they will frequently not have the newest version installed.
Thanks to Björn Steinbrink and Junio C Hamano for comments and
corrections.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
With this patch, "git gc --no-prune" will not prune any loose (and
dangling) object, and "git gc --prune=5.minutes.ago" will prune
all loose objects older than 5 minutes.
This patch benefitted from suggestions by Thomas Rast and Jan Krï¿œger.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1.6.2 will have @{-1} syntax advertised as "usable anywhere you can use
a branch name". However, "git merge @{-1}" did not work.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This teaches the new "@{-1} syntax to refer to the previous branch to "git
branch". After looking at somebody's faulty patch series on a topic
branch too long, if you decide it is not worth merging, you can just say:
$ git checkout master
$ git branch -D @{-1}
to get rid of it without having to type the name of the topic you now hate
so much for wasting a lot of your time.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit afe5d3d5 introduced a safety valve to symbolic-ref to
disallow installing an invalid HEAD. It was accompanied by
b229d18a, which changed validate_headref to require that
HEAD contain a pointer to refs/heads/ instead of just refs/.
Therefore, the safety valve also checked for refs/heads/.
As it turns out, topgit is using refs/top-bases/ in HEAD,
leading us to re-loosen (at least temporarily) the
validate_headref check made in b229d18a. This patch does the
corresponding loosening for the symbolic-ref safety valve,
so that the two are in agreement once more.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The branch color constants have the form COLOR_BRANCH_$category. Rename
them to BRANCH_COLOR_$category as this conveys their meaning better.
Signed-off-by: Arjen Laarhoven <arjen@yaph.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
