1
0
Fork 0
mirror of https://github.com/git/git.git synced 2024-11-16 22:14:53 +01:00
Commit graph

36370 commits

Author SHA1 Message Date
Junio C Hamano
6d73dba8f6 Merge branch 'jc/maint-pull-docfix'
* jc/maint-pull-docfix:
  Documentation: "git pull" does not have the "-m" option
  Documentation: exclude irrelevant options from "git pull"
2014-01-27 10:44:00 -08:00
Junio C Hamano
ba98a2f660 Merge branch 'jk/complete-merge-base'
* jk/complete-merge-base:
  completion: handle --[no-]fork-point options to git-rebase
  completion: complete merge-base options
2014-01-27 10:43:55 -08:00
Junio C Hamano
c9e8c1aa3f Merge branch 'ab/subtree-doc'
* ab/subtree-doc:
  subtree: fix argument validation in add/pull/push
2014-01-27 10:43:51 -08:00
Thomas Ackermann
9c96c7f3aa http-protocol.txt: don't use uppercase for variable names in "The Negotiation Algorithm"
Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-27 09:06:26 -08:00
Junio C Hamano
43cc5ce9ea Documentation: make it easier to maintain enumerated documents
Instead of starting an enumeration of documents with a DOC = doc1
followed by DOC += doc2, DOC += doc3, ..., empty it with "DOC =" at
the beginning and consistently add them with "DOC += ...".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-27 09:04:32 -08:00
Thomas Ackermann
586aa78631 create HTML for http-protocol.txt
./Documentation/technical/http-protocol.txt was missing from TECH_DOCS in Makefile.
Add it and also improve HTML formatting while still retaining good readability of the ASCII text:
- Use monospace font instead of italicized or roman font for machine output and source text
- Use roman font for things which should be body text
- Use double quotes consistently for "want" and "have" commands
- Use uppercase "C" / "S" consistently for "client" / "server";
  also use "C:" / "S:" instead of "(C)" / "(S)" for consistency and
  to avoid having formatted "(C)" as copyright symbol in HTML
- Use only spaces and not a combination of tabs and spaces for whitespace

Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-27 09:02:02 -08:00
Andy Spencer
e4ddb05720 tree_entry_interesting: match against all pathspecs
The current basedir compare aborts early in order to avoid futile
recursive searches. However, a match may still be found by another
pathspec. This can cause an error while checking out files from a branch
when using multiple pathspecs:

$ git checkout master -- 'a/*.txt' 'b/*.txt'
error: pathspec 'a/*.txt' did not match any file(s) known to git.

Signed-off-by: Andy Spencer <andy753421@gmail.com>
Acked-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-27 09:01:50 -08:00
John Keeping
fd78cedc52 Makefile: remove redundant object in git-http{fetch,push}
revision.o is included in libgit.a which is in $(GITLIBS), so we don't
need to include is separately.  This fixes compilation with
"-fwhole-program" which otherwise fails with messages like this:

  libgit.a(revision.o): In function `mark_tree_uninteresting':
  /home/john/src/git/revision.c:108: multiple definition of `mark_tree_uninteresting'
  /tmp/ccKQRkZV.ltrans2.ltrans.o:/home/john/src/git/revision.c:108: first defined here

Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-27 08:55:28 -08:00
Michael Haggerty
8169007468 doc: remote author/documentation sections from more pages
We decided at 48bb914e (doc: drop author/documentation sections from
most pages, 2011-03-11) to remove "author" and "documentation"
sections from our documentation.  Remove a few stragglers.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-27 08:34:34 -08:00
Jiang Xin
608a82348b l10n: remove 2 blank translations on Danish, Dutch
Two l10n teams haven't contributed a single translation for about two
years since they was initialized with a blank template.  Remove them
can make the Git package smaller and give opportunities to other
contributors.

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
2014-01-25 06:17:14 +08:00
Jiang Xin
cfff71a961 l10n: zh_CN.po: translate 27 messages (2210t0f0u)
Translations for git v1.9-rc0, and also update translations on "graft"
and "reference repository".

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
2014-01-25 06:17:14 +08:00
Vicent Marti
a201c20b41 ewah: support platforms that require aligned reads
The caller may hand us an unaligned buffer (e.g., because it
is an mmap of a file with many ewah bitmaps). On some
platforms (like SPARC) this can cause a bus error. We can
fix it with a combination of get_be32 and moving the data
into an aligned buffer (which we would do anyway, but we can
move it before fixing the endianness).

Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23 14:05:05 -08:00
Jeff King
c3d8da571f read-cache: use get_be32 instead of hand-rolled ntoh_l
Commit d60c49c (read-cache.c: allow unaligned mapping of the
index file, 2012-04-03) introduced helpers to access
unaligned data. However, we already have get_be32, which has
a few advantages:

  1. It's already written, so we avoid duplication.

  2. It's probably faster, since it does the endian
     conversion and the alignment fix at the same time.

  3. The get_be32 code is well-tested, having been in
     block-sha1 for a long time. By contrast, our custom
     helpers were probably almost never used, since the user
     needed to manually define a macro to enable them.

We have to add a get_be16 implementation to the existing
get_be32, but that is very simple to do.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23 14:03:48 -08:00
Jeff King
802b123366 block-sha1: factor out get_be and put_be wrappers
The BLK_SHA1 code has optimized wrappers for doing endian
conversions on memory that may not be aligned. Let's pull
them out so that we can use them elsewhere, especially the
time-tested list of platforms that prefer each strategy.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23 14:03:21 -08:00
Jeff King
a0332337be t7700: do not use "touch" unnecessarily
Some versions of touch (such as /usr/ucb/touch on Solaris)
do not know about the "-r" option. This would make sense as
a feature of test-chmtime, but fortunately this fix is even
easier.

The test does not care about the timestamp of the .keep file it
creates at all, only that it exists. For such a use case, with or
without portability issues around "-r", "touch" should not be used
in the first place.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23 13:13:20 -08:00
Jeff King
088304bf73 t7501: fix "empty commit" test with NO_PERL
t7501.9 tries to check that "git commit" will fail when the
index is unchanged. It relies on previous tests not to have
modified the index. When it was originally written, this was
always the case. However, commit c65dc35 (t7501: test the
right kind of breakage, 2012-03-30) changed earlier tests (4
and 5) to leave a modification in the index.

We never noticed, however, because t7501.7, between the two,
clears the index state as a side effect. However, that test
depends on the PERL prerequisite, and so it does not always
run. Therefore if NO_PERL is set, we do not run the
intervening test, the index is left unclean, and t7501.9
fails.

We could fix this by moving t7501.9 up in the script.
However, this patch instead leaves it in place and adds a
"git reset" before the commit. This makes the test more
explicit about its preconditions, and will future-proof it
against any other changes in the test state.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23 13:11:07 -08:00
Nguyễn Thái Ngọc Duy
74b4f7f277 tree-walk.c: ignore trailing slash on submodule in tree_entry_interesting()
We do ignore trailing slash on a directory, so pathspec "abc/" matches
directory "abc". A submodule is also a directory. Apply the same logic
to it. This makes "git log submodule-path" and "git log submodule-path/"
produce the same output.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23 13:03:00 -08:00
Jeff King
b861e235bc repack: propagate pack-objects options as strings
In the original shell version of git-repack, any options
destined for pack-objects were left as strings, and passed
as a whole. Since the C rewrite in commit a1bbc6c (repack:
rewrite the shell script in C, 2013-09-15), we now parse
these values to integers internally, then reformat the
integers when passing the option to pack-objects.

This has the advantage that we catch format errors earlier
(i.e., when repack is invoked, rather than when pack-objects
is invoked).

It has three disadvantages, though:

  1. Our internal data types may not be the right size. In
     the case of "--window-memory" and "--max-pack-size",
     these are "unsigned long" in pack-objects, but we can
     only represent a regular "int".

  2. Our parsing routines might not be the same as those of
     pack-objects. For the two options above, pack-objects
     understands "100m" to mean "100 megabytes", but repack
     does not.

  3. We have to keep a sentinel value to know whether it is
     worth passing the option along. In the case of
     "--window-memory", we currently do not pass it if the
     value is "0". But that is a meaningful value to
     pack-objects, where it overrides any configured value.

We can fix all of these by simply passing the strings from
the user along to pack-objects verbatim. This does not
actually fix anything for "--depth" or "--window", but these
are converted, too, for consistency.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23 10:34:53 -08:00
Jeff King
aa8bd519db repack: make parsed string options const-correct
When we use OPT_STRING to parse an option, we get back a
pointer into the argv array, which should be "const char *".
The compiler doesn't notice because it gets passed through a
"void *" in the option struct.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23 10:34:51 -08:00
Jeff King
44b96ecaa8 repack: fix typo in max-pack-size option
When we see "--max-pack-size", we accidentally propagated
this to pack-objects as "--max_pack_size", which does not
work at all.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23 10:34:49 -08:00
Johannes Sixt
b594c975c7 Makefile: Fix compilation of Windows resource file
If the git version number consists of less than three period
separated numbers, then the Windows resource file compilation
issues a syntax error:

  $ touch git.rc
  $ make V=1 git.res
  GIT_VERSION = 1.9.rc0
  windres -O coff \
            -DMAJOR=1 -DMINOR=9 -DPATCH=rc0 \
            -DGIT_VERSION="\\\"1.9.rc0\\\"" git.rc -o git.res
  C:\msysgit\msysgit\mingw\bin\windres.exe: git.rc:2: syntax error
  make: *** [git.res] Error 1
  $

Note that -DPATCH=rc0.

The values passed via -DMAJOR=, -DMINOR=, and -DPATCH= are used in
FILEVERSION and PRODUCTVERSION statements, which expect up to four numeric
values. These version numbers are intended for machine consumption. They
are typically inspected by installers to decide whether a file to be
installed is newer than one that exists on the system, but are not used
for much else.

We can be pretty certain that there are no tools that look at these
version numbers, not even the installer of Git for Windows does.
Therefore, to fix the syntax error, fill in only the first two numbers,
which we are guaranteed to find in Git version numbers.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Acked-by: Pat Thoyts <patthoyts@users.sourceforge.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23 10:00:28 -08:00
Junio C Hamano
b21c0bc8e6 Merge git://git.bogomips.org/git-svn
* 'master' of git://git.bogomips.org/git-svn:
  git-svn: memoize _rev_list and rebuild
2014-01-23 08:51:14 -08:00
Junio C Hamano
2dbfa676f0 Merge git://ozlabs.org/~paulus/gitk
* 'master' of git://ozlabs.org/~paulus/gitk:
  gitk: Indent word-wrapped lines in commit display header
  gitk: Comply with XDG base directory specification
  gitk: Replace "next" and "prev" buttons with down and up arrows
  gitk: chmod +x po2msg.sh
  gitk: Update copyright dates
  gitk: Add Bulgarian translation (304t)
  gitk: Fix mistype
2014-01-23 08:50:50 -08:00
Paul Mackerras
76d64ca6b5 gitk: Indent word-wrapped lines in commit display header
In the cases where the lines starting with Precedes:, Follows: and
Branches: in the commit display are long enough to be word-wrapped,
this adds a 1cm margin on the left of the wrapped lines, to make
the display more readable.  Suggested by Stephen Rothwell.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2014-01-23 22:06:22 +11:00
lin zuojian
ab0bcec987 git-svn: memoize _rev_list and rebuild
According to profile data, _rev_list and rebuild consume a large
portion of time.  Memoize the results of _rev_list and memoize
rebuild internals to avoid subprocess invocation.

When importing 15152 revisions on a LAN, time improved from 10
hours to 3-4 hours.

Signed-off-by: lin zuojian <manjian2006@gmail.com>
Signed-off-by: Eric Wong <normalperson@yhbt.net>
2014-01-23 02:54:26 +00:00
Michael Haggerty
f21e1c5d36 Add cross-references between docs for for-each-ref and show-ref
Add cross-references between the manpages for git-for-each-ref(1) and
git-show-ref(1).

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 12:08:39 -08:00
David Kastrup
a0f58c5830 builtin/blame.c: struct blame_entry does not need a prev link
Signed-off-by: David Kastrup <dak@gnu.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 11:28:01 -08:00
Michael Haggerty
0f5274033e safe_create_leading_directories(): on Windows, \ can separate path components
When cloning to a directory "C:\foo\bar" from Windows' cmd.exe where
"foo" does not exist yet, Git would throw an error like

    fatal: could not create work tree dir 'c:\foo\bar'.: No such file or directory

Fix this by not hard-coding a platform specific directory separator
into safe_create_leading_directories().

This patch, including its entire commit message, is derived from a
patch by Sebastian Schuberth.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 11:00:07 -08:00
Pete Wyckoff
f84cb68463 git p4 doc: use two-line style for options with multiple spellings
Thomas Rast noticed the docs have a mix of styles when
it comes to options with multiple spellings.  Standardize
the couple in git-p4.txt that are odd.

Instead of:
  -n, --dry-run::

Do this:
  -n::
  --dry-run::

See
http://thread.gmane.org/gmane.comp.version-control.git/219936/focus=219945

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 08:06:20 -08:00
Pete Wyckoff
3d5388afa8 git p4 test: examine behavior with locked (+l) files
The p4 server can enforce file locking, so that only one user
can edit a file at a time.  Git p4 is unable to submit changes
to locked files.  Currently it exits poorly.  Ideally it would
notice the locked condition and clean up nicely.

Add a bunch of tests that describe the problem, hoping that
fixes appear in the future.

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 08:06:19 -08:00
Pete Wyckoff
2000544330 git p4: fix an error message when "p4 where" fails
When "p4 where" fails, for whatever reason, the error message tries to
show an undefined variable.  This minor bug applies only when using a
client spec, and was introduced recently in 9d57c4a (git p4: implement
view spec wildcards with "p4 where", 2013-08-30).

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 08:06:19 -08:00
Pete Wyckoff
79467e61aa git p4: handle files with wildcards when doing RCS scrubbing
Commit 9d7d446 (git p4: submit files with wildcards, 2012-04-29)
fixed problems with handling files that had p4 wildcard
characters, like "@" and "*".  But it missed one case, that of
RCS keyword scrubbing, which uses "p4 fstat" to extract type
information.  Fix it by calling wildcard_encode() on the raw
filename.

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 08:06:19 -08:00
Pete Wyckoff
0cf1b72a38 git p4 test: do not pollute /tmp
Generating the submit template for p4 uses tempfile.mkstemp(),
which by default puts files in /tmp.  For a test that fails,
possibly on purpose, this is not cleaned up.  Run with TMPDIR
pointing into the trash directory so the temp files go away
with the test results.

To do this required some other minor changes.  First, the editor
is launched using system(editor + " " + template_file), using
shell expansion to build the command string.  This doesn't work
if editor has a space in it.  And is generally unwise as it's
easy to fool the shell into doing extra work.  Exec the args
directly, without shell expansion.

Second, without shell expansion, the trick of "P4EDITOR=:" used
in the tests doesn't work.  Use a real command, true, as the
non-interactive editor for testing.

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 08:06:19 -08:00
Pete Wyckoff
0055b56e10 git p4 test: run as user "author"
The tests use author@example.com as the canonical submitter,
but he does not have an entry in the p4 users database.
This causes the generated change description to complain
that the git and p4 users disagree.  The complaint message
is still valid, but isn't useful in tests.  It was introduced
in 848de9c (git-p4: warn if git authorship won't be retained,
2011-05-13).

Fix t9813 to use @example.com instead of @localhost due to
change in p4_add_user().  Move the function into the git p4
test library so author can be added at initialization time.

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 08:05:27 -08:00
Pete Wyckoff
0577849d2b git p4 test: is_cli_file_writeable succeeds
Commit e9df0f9 (git p4: cygwin p4 client does not mark read-only,
2013-01-26) fixed a problem with "test -w" on cygwin, but mistakenly
marked the new test as failing.  Fix this.

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 08:05:26 -08:00
Pete Wyckoff
630c4f19f0 git p4 test: explicitly check p4 wildcard delete
There was no test where p4 deleted a file with a wildcard
character.  Make sure git p4 applies the wildcard decoding
properly when importing a delete that includes a wildcard.

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 08:05:26 -08:00
Pete Wyckoff
40f846c35c git p4: work around p4 bug that causes empty symlinks
Damien Gérard highlights an interesting problem.  Some p4
repositories end up with symlinks that have an empty target.  It
is not possible to create this with current p4, but they do
indeed exist.

The effect in git p4 is that "p4 print" on the symlink returns an
empty string, confusing the curret symlink-handling code.

Such broken repositories cause problems in p4 as well, even with
no git involved.  In p4, syncing to a change that includes a
bogus symlink causes errors:

    //depot/empty-symlink - updating /home/me/p4/empty-symlink
    rename: /home/me/p4/empty-symlink: No such file or directory

and leaves no symlink.

In git, replicate the p4 behavior by ignoring these bad symlinks.
If, in a later p4 revision, the symlink happens to point to
something non-null, the symlink will be replaced properly.

Add a big test for all this too.

This happens to be a regression introduced by 1292df1 (git-p4:
Fix occasional truncation of symlink contents., 2013-08-08) and
appeared first in 1.8.5.  But it shows up only in p4 repositories
of dubious character, so can wait for a proper release.

Tested-by: Damien Gérard <damien@iwi.me>
Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22 08:05:04 -08:00
Astril Hayato
8f86339858 gitk: Comply with XDG base directory specification
Write the gitk config data to $XDG_CONFIG_HOME/git/gitk ($HOME/.config/git/gitk
by default) in line with the XDG specification. This makes it consistent with
git which also follows the spec.

If $HOME/.gitk already exists use that for backward compatibility, so only new
installations are affected.

Signed-off-by: Astril Hayato <astrilhayato@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2014-01-22 22:05:32 +11:00
Pete Wyckoff
a8d8e382a9 git p4 test: ensure p4 symlink parsing works
While this happens to work, there was no test to make sure
that the basic importing of a symlink from p4 to git functioned.

Add a simple test to create a symlink in p4 and import it into git,
then verify that the symlink exists and has the correct target.

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 15:50:27 -08:00
Pete Wyckoff
16168986eb git p4 test: wildcards are supported
Since 9d57c4a (git p4: implement view spec wildcards with "p4
where", 2013-08-30), all the wildcard types should be supported.
Change must-fail tests to mark that they now pass.

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 15:50:27 -08:00
Jeff King
200abe7458 list-objects: only look at cmdline trees with edge_hint
When rev-list is given a command-line like:

  git rev-list --objects $commit --not --all

the most accurate answer is the difference between the set
of objects reachable from $commit and the set reachable from
all of the existing refs. However, we have not historically
provided that answer, because it is very expensive to
calculate. We would have to open every tree of every commit
in the entire history.

Instead, we find the accurate set difference of the
reachable commits, and then mark the trees at the boundaries
as uninteresting. This misses objects which appear in the
trees of both the interesting commits and deep within the
uninteresting history.

Commit fbd4a70 (list-objects: mark more commits as edges in
mark_edges_uninteresting, 2013-08-16) noticed that we miss
those objects during pack-objects, and added code to examine
the trees of all of the "--not" refs given on the
command-line.  Note that this is still not the complete set
difference, because we look only at the tips of the
command-line arguments, not all of their reachable commits.
But it increases the set of boundary objects we consider,
which is especially important for shallow fetches.  So we
are trading extra CPU time for a larger set of boundary
objects, which can improve the resulting pack size for a
--thin pack.

This tradeoff probably makes sense in the context of
pack-objects, where we have set revs->edge_hint to have the
traversal feed us the set of boundary objects.  For a
regular rev-list, though, it is probably not a good
tradeoff. It is true that it makes our list slightly closer
to a true set difference, but it is a rare case where this
is important. And because we do not have revs->edge_hint
set, we do nothing useful with the larger set of boundary
objects.

This patch therefore ties the extra tree examination to the
revs->edge_hint flag; it is the presence of that flag that
makes the tradeoff worthwhile.

Here is output from the p0001-rev-list showing the
improvement in performance:

Test                                             HEAD^             HEAD
-----------------------------------------------------------------------------------------
0001.1: rev-list --all                           0.69(0.65+0.02)   0.69(0.66+0.02) +0.0%
0001.2: rev-list --all --objects                 3.22(3.19+0.03)   3.23(3.20+0.03) +0.3%
0001.4: rev-list $commit --not --all             0.04(0.04+0.00)   0.04(0.04+0.00) +0.0%
0001.5: rev-list --objects $commit --not --all   0.27(0.26+0.01)   0.04(0.04+0.00) -85.2%

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 14:46:24 -08:00
Jeff King
ea97002fc9 t/perf: time rev-list with UNINTERESTING commits
We time a straight "rev-list --all" and its "--object"
counterpart, both going all the way to the root. However, we
do not time a partial history walk. This patch adds an
extreme case: a walk over a very small slice of history, but
with a very large set of UNINTERESTING tips. This is similar
to the connectivity check run by git on a small fetch, or
the walk done by any pre-receive hooks that want to check
incoming commits.

This test reveals a performance regression in git v1.8.4.2,
caused by fbd4a70 (list-objects: mark more commits as edges
in mark_edges_uninteresting, 2013-08-16):

Test                                             fbd4a703^         fbd4a703
------------------------------------------------------------------------------------------
0001.1: rev-list --all                           0.69(0.67+0.02)   0.69(0.68+0.01) +0.0%
0001.2: rev-list --all --objects                 3.47(3.44+0.02)   3.48(3.44+0.03) +0.3%
0001.4: rev-list $commit --not --all             0.04(0.04+0.00)   0.04(0.04+0.00) +0.0%
0001.5: rev-list --objects $commit --not --all   0.04(0.03+0.00)   0.27(0.24+0.02) +575.0%

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 14:46:17 -08:00
Thomas Rast
75d6e552a8 Documentation: @{-N} can refer to a commit
The @{-N} syntax always referred to the N-th last thing checked out,
which can be either a branch or a commit (for detached HEAD cases).
However, the documentation only mentioned branches.

Edit in a "/commit" in the appropriate places.

Reported-by: Kevin <ikke@ikke.info>
Signed-off-by: Thomas Rast <tr@thomasrast.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 13:50:00 -08:00
Michael Haggerty
08f555cb82 rename_tmp_log(): on SCLD_VANISHED, retry
If safe_create_leading_directories() fails because a file along the
path unexpectedly vanished, try again from the beginning.  Try at most
4 times.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 13:47:28 -08:00
Michael Haggerty
f1e9e9a4db rename_tmp_log(): limit the number of remote_empty_directories() attempts
This doesn't seem to be a likely error, but we've got the counter
anyway, so we might as well use it for an added bit of safety.

Please note that the first call to rename() is optimistic, and it is
normal for it to fail if there is a directory in the way.  So bump the
total number of allowed attempts to 4, to be sure that we can still
have at least 3 retries in the case of a race.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 13:47:24 -08:00
Michael Haggerty
ae4a283e3b rename_tmp_log(): handle a possible mkdir/rmdir race
If a directory vanishes while renaming the temporary reflog file,
retry (up to 3 times).  This could happen if another process deletes
the directory created by safe_create_leading_directories() just before
we rename the file into the directory.

As far as I can tell, this race could not occur internal to git.  The
only time that a directory under $GIT_DIR/logs is deleted is if room
has to be made for a log file for a reference with the same name;
for example, in the following sequence:

    git branch foo/bar    # Creates file .git/logs/refs/heads/foo/bar
    git branch -d foo/bar # Deletes file but leaves .git/logs/refs/heads/foo/
    git branch foo        # Deletes .git/logs/refs/heads/foo/

But the only reason the last command deletes the directory is because
it wants to create a file with the same name.  So if another process
(e.g.,

    git branch foo/baz

) wants to create that directory, one of the two is doomed to failure
anyway because of a D/F conflict.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 13:47:13 -08:00
Michael Haggerty
fa59ae7971 rename_ref(): extract function rename_tmp_log()
It's about to become a bit more complex.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 13:46:59 -08:00
Michael Haggerty
863808cd1a remove_dir_recurse(): handle disappearing files and directories
If a file or directory that we are trying to remove disappears (e.g.,
because another process has pruned it), do not consider it an error.

However, if REMOVE_DIR_KEEP_TOPLEVEL is set, and the toplevel
directory is missing, then consider it an error (like before).

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 13:46:47 -08:00
Michael Haggerty
ecb2c282c0 remove_dir_recurse(): tighten condition for removing unreadable dir
If opendir() fails on the top-level directory, it makes sense to try
to delete it anyway--but only if the failure was due to EACCES.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 13:46:32 -08:00
Michael Haggerty
e5c223e98b lock_ref_sha1_basic(): if locking fails with ENOENT, retry
If hold_lock_file_for_update() fails with errno==ENOENT, it might be
because somebody else (for example, a pack-refs process) has just
deleted one of the lockfile's ancestor directories.  So if this
condition is detected, try again (up to 3 times).

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21 13:46:30 -08:00