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35669 commits

Author SHA1 Message Date
Nguyễn Thái Ngọc Duy ae8d082421 pathspec: pass directory indicator to match_pathspec_item()
This patch activates the DO_MATCH_DIRECTORY code in m_p_i(), which
makes "git diff HEAD submodule/" and "git diff HEAD submodule" produce
the same output. Previously only the version without trailing slash
returns the difference (if any).

That's the effect of new ce_path_match(). dir_path_match() is not
executed by the new tests. And it should not introduce regressions.

Previously if path "dir/" is passed in with pathspec "dir/", they
obviously match. With new dir_path_match(), the path becomes
_directory_ "dir" vs pathspec "dir/", which is not executed by the old
code path in m_p_i(). The new code path is executed and produces the
same result.

The other case is pathspec "dir" and path "dir/" is now turned to
"dir" (with DO_MATCH_DIRECTORY). Still the same result before or after
the patch.

So why change? Because of the next patch about clean.c.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24 14:37:19 -08:00
Nguyễn Thái Ngọc Duy 68690fdd0b match_pathspec: match pathspec "foo/" against directory "foo"
Currently we do support matching pathspec "foo/" against directory
"foo". That is because match_pathspec() has no way to tell "foo" is a
directory and matching "foo/" against _file_ "foo" is wrong.

The callers can now tell match_pathspec if "foo" is a directory, we
could make an exception for this case. Code is not executed though
because no callers pass the flag yet.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24 14:37:19 -08:00
Nguyễn Thái Ngọc Duy 42b0874a7e dir.c: prepare match_pathspec_item for taking more flags
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24 14:37:19 -08:00
Nguyễn Thái Ngọc Duy 854b09592c pathspec: rename match_pathspec_depth() to match_pathspec()
A long time ago, for some reason I was not happy with
match_pathspec(). I created a better version, match_pathspec_depth()
that was suppose to replace match_pathspec()
eventually. match_pathspec() has finally been gone since 6 months
ago. Use the shorter name for match_pathspec_depth().

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24 14:37:14 -08:00
Nguyễn Thái Ngọc Duy ebb32893ba pathspec: convert some match_pathspec_depth() to dir_path_match()
This helps reduce the number of match_pathspec_depth() call sites and
show how m_p_d() is used. And it usage is:

 - match against an index entry (ce_path_match or match_pathspec_depth
   in ls-files)

 - match against a dir_entry from read_directory (dir_path_match and
   match_pathspec_depth in clean.c, which will be converted later)

 - resolve-undo (rerere.c and ls-files.c)

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24 14:37:09 -08:00
Nguyễn Thái Ngọc Duy 429bb40abd pathspec: convert some match_pathspec_depth() to ce_path_match()
This helps reduce the number of match_pathspec_depth() call sites and
show how match_pathspec_depth() is used.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24 14:36:52 -08:00
Junio C Hamano 017f804efc Merge branch 'nd/negative-pathspec'
* nd/negative-pathspec:
  tree-walk.c: ignore trailing slash on submodule in tree_entry_interesting()
2014-01-27 10:45:44 -08:00
Junio C Hamano 523f0a25b9 Merge branch 'pw/git-p4'
Various "git p4" updates.

* pw/git-p4:
  git p4 doc: use two-line style for options with multiple spellings
  git p4 test: examine behavior with locked (+l) files
  git p4: fix an error message when "p4 where" fails
  git p4: handle files with wildcards when doing RCS scrubbing
  git p4 test: do not pollute /tmp
  git p4 test: run as user "author"
  git p4 test: is_cli_file_writeable succeeds
  git p4 test: explicitly check p4 wildcard delete
  git p4: work around p4 bug that causes empty symlinks
  git p4 test: ensure p4 symlink parsing works
  git p4 test: wildcards are supported
2014-01-27 10:45:41 -08:00
Junio C Hamano 33d4669aaa Merge branch 'ss/safe-create-leading-dir-with-slash'
"git clone $origin foo\bar\baz" on Windows failed to create the
leading directories (i.e. a moral-equivalent of "mkdir -p").

* ss/safe-create-leading-dir-with-slash:
  safe_create_leading_directories(): on Windows, \ can separate path components
2014-01-27 10:45:37 -08:00
Junio C Hamano d0956cfa8e Merge branch 'mh/safe-create-leading-directories'
Code clean-up and protection against concurrent write access to the
ref namespace.

* mh/safe-create-leading-directories:
  rename_tmp_log(): on SCLD_VANISHED, retry
  rename_tmp_log(): limit the number of remote_empty_directories() attempts
  rename_tmp_log(): handle a possible mkdir/rmdir race
  rename_ref(): extract function rename_tmp_log()
  remove_dir_recurse(): handle disappearing files and directories
  remove_dir_recurse(): tighten condition for removing unreadable dir
  lock_ref_sha1_basic(): if locking fails with ENOENT, retry
  lock_ref_sha1_basic(): on SCLD_VANISHED, retry
  safe_create_leading_directories(): add new error value SCLD_VANISHED
  cmd_init_db(): when creating directories, handle errors conservatively
  safe_create_leading_directories(): introduce enum for return values
  safe_create_leading_directories(): always restore slash at end of loop
  safe_create_leading_directories(): split on first of multiple slashes
  safe_create_leading_directories(): rename local variable
  safe_create_leading_directories(): add explicit "slash" pointer
  safe_create_leading_directories(): reduce scope of local variable
  safe_create_leading_directories(): fix format of "if" chaining
2014-01-27 10:45:33 -08:00
Junio C Hamano c380cf85a7 Merge branch 'tr/nth-previous-is-a-commit'
* tr/nth-previous-is-a-commit:
  Documentation: @{-N} can refer to a commit
2014-01-27 10:45:31 -08:00
Junio C Hamano bf3939901b Merge branch 'tr/gitk-doc-range-trace'
* tr/gitk-doc-range-trace:
  Documentation/gitk: document -L option
2014-01-27 10:45:23 -08:00
Junio C Hamano a6bec00145 Merge branch 'jk/mark-edges-uninteresting'
Fix performance regression in v1.8.4.x and later.

* jk/mark-edges-uninteresting:
  list-objects: only look at cmdline trees with edge_hint
  t/perf: time rev-list with UNINTERESTING commits
2014-01-27 10:45:08 -08:00
Junio C Hamano e049109ef1 Merge branch 'jk/diff-filespec-cleanup'
* jk/diff-filespec-cleanup:
  diff_filespec: use only 2 bits for is_binary flag
  diff_filespec: reorder is_binary field
  diff_filespec: drop xfrm_flags field
  diff_filespec: drop funcname_pattern_ident field
  diff_filespec: reorder dirty_submodule macro definitions
2014-01-27 10:45:03 -08:00
Junio C Hamano 7b4e2b7e6a Merge branch 'ef/mingw-write'
* ef/mingw-write:
  mingw: remove mingw_write
  prefer xwrite instead of write
2014-01-27 10:44:59 -08:00
Junio C Hamano de20e44721 Merge branch 'rk/send-email-ssl-cert'
The "if /etc/ssl/certs/ directory exists, explicitly telling the
library to use it as SSL_ca_path" blind-defaulting in "git
send-email" broke platforms where /etc/ssl/certs/ directory exists,
but it cannot used as SSL_ca_path (e.g. Fedora rawhide).  Fix it by
not specifying any SSL_ca_path/SSL_ca_file but still asking for peer
verification in such a case.

* rk/send-email-ssl-cert:
  send-email: /etc/ssl/certs/ directory may not be usable as ca_path
2014-01-27 10:44:34 -08:00
Junio C Hamano a0f4525ae0 Merge branch 'jn/ignore-doc'
Explicitly list $HOME/.config/git/ignore as one of the places you
can use to keep ignore patterns that depend on your personal choice
of tools, e.g. *~ for Emacs users.

* jn/ignore-doc:
  gitignore doc: add global gitignore to synopsis
2014-01-27 10:44:27 -08:00
Junio C Hamano 4e9f9320e3 Merge branch 'jk/interpret-branch-name-fix'
Fix a handful of bugs around interpreting $branch@{upstream}
notation and its lookalike, when $branch part has interesting
characters, e.g. "@", and ":".

* jk/interpret-branch-name-fix:
  interpret_branch_name: find all possible @-marks
  interpret_branch_name: avoid @{upstream} past colon
  interpret_branch_name: always respect "namelen" parameter
  interpret_branch_name: rename "cp" variable to "at"
  interpret_branch_name: factor out upstream handling
2014-01-27 10:44:21 -08:00
Junio C Hamano f583ace157 Merge branch 'jk/allow-fetch-onelevel-refname'
"git clone" would fail to clone from a repository that has a ref
directly under "refs/", e.g. "refs/stash", because different
validation paths do different things on such a refname.  Loosen the
client side's validation to allow such a ref.

* jk/allow-fetch-onelevel-refname:
  fetch-pack: do not filter out one-level refs
2014-01-27 10:44:14 -08:00
Junio C Hamano 63763273de Merge branch 'jc/revision-range-unpeel'
"git log --left-right A...B" lost the "leftness" of commits
reachable from A when A is a tag as a side effect of a recent
bugfix.  This is a regression in 1.8.4.x series.

* jc/revision-range-unpeel:
  revision: propagate flag bits from tags to pointees
  revision: mark contents of an uninteresting tree uninteresting
2014-01-27 10:44:10 -08:00
Junio C Hamano 9bb5287098 Merge branch 'mh/retire-ref-fetch-rules'
Code simplification.

* mh/retire-ref-fetch-rules:
  refname_match(): always use the rules in ref_rev_parse_rules
2014-01-27 10:44:07 -08:00
Junio C Hamano ac355298b1 Merge branch 'mh/attr-macro-doc'
* mh/attr-macro-doc:
  gitattributes: document more clearly where macros are allowed
2014-01-27 10:44:04 -08:00
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
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
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
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