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Author SHA1 Message Date
Junio C Hamano
727a46b2f9 Sync with maint
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 15:21:47 -07:00
Junio C Hamano
fada522129 Start 1.8.3.1 maintenance track
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 15:21:15 -07:00
Junio C Hamano
a717d9e1d3 Merge branch 'maint-1.8.2' into maint
* maint-1.8.2:
  trivial: Add missing period in documentation
2013-05-29 15:20:36 -07:00
Junio C Hamano
54219a4d89 Start 1.8.4 cycle
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 15:19:12 -07:00
Junio C Hamano
7ebb906ddd Merge branch 'jn/config-ignore-inaccessible'
When $HOME is misconfigured to point at an unreadable directory, we
used to complain and die. This loosens the check.

* jn/config-ignore-inaccessible:
  config: allow inaccessible configuration under $HOME
2013-05-29 14:30:10 -07:00
Junio C Hamano
4818cfcdcc Merge branch 'jk/lookup-object-prefer-latest'
Optimizes object lookup when the object hashtable starts to become
crowded.

* jk/lookup-object-prefer-latest:
  lookup_object: prioritize recently found objects
2013-05-29 14:29:59 -07:00
Junio C Hamano
feffa04437 Merge branch 'jk/subtree-do-not-push-if-split-fails'
"git subtree" (in contrib/) had one codepath with loose error
checks to lose data at the remote side.

* jk/subtree-do-not-push-if-split-fails:
  contrib/subtree: don't delete remote branches if split fails
2013-05-29 14:29:53 -07:00
Junio C Hamano
31d176d083 Merge branch 'jk/test-output'
When TEST_OUTPUT_DIRECTORY setting is used, it was handled somewhat
inconsistently between the test framework and t/Makefile, and logic
to summarize the results looked at a wrong place.

* jk/test-output:
  t/Makefile: don't define TEST_RESULTS_DIRECTORY recursively
  test output: respect $TEST_OUTPUT_DIRECTORY
  t/Makefile: fix result handling with TEST_OUTPUT_DIRECTORY
2013-05-29 14:29:11 -07:00
Junio C Hamano
7e2d574c37 Merge branch 'rj/sparse'
* rj/sparse:
  sparse: Fix mingw_main() argument number/type errors
  compat/mingw.c: Fix some sparse warnings
  compat/win32mmap.c: Fix some sparse warnings
  compat/poll/poll.c: Fix a sparse warning
  compat/win32/pthread.c: Fix a sparse warning
  compat/unsetenv.c: Fix a sparse warning
  compat/nedmalloc: Fix compiler warnings on linux
  compat/nedmalloc: Fix some sparse warnings
  compat/fnmatch/fnmatch.c: Fix a sparse error
  compat/regex/regexec.c: Fix some sparse warnings
2013-05-29 14:24:02 -07:00
Junio C Hamano
2f1ef15070 Merge branch 'mh/packed-refs-various'
Update reading and updating packed-refs file, correcting corner case
bugs.

* mh/packed-refs-various: (33 commits)
  refs: handle the main ref_cache specially
  refs: change do_for_each_*() functions to take ref_cache arguments
  pack_one_ref(): do some cheap tests before a more expensive one
  pack_one_ref(): use write_packed_entry() to do the writing
  pack_one_ref(): use function peel_entry()
  refs: inline function do_not_prune()
  pack_refs(): change to use do_for_each_entry()
  refs: use same lock_file object for both ref-packing functions
  pack_one_ref(): rename "path" parameter to "refname"
  pack-refs: merge code from pack-refs.{c,h} into refs.{c,h}
  pack-refs: rename handle_one_ref() to pack_one_ref()
  refs: extract a function write_packed_entry()
  repack_without_ref(): write peeled refs in the rewritten file
  t3211: demonstrate loss of peeled refs if a packed ref is deleted
  refs: change how packed refs are deleted
  search_ref_dir(): return an index rather than a pointer
  repack_without_ref(): silence errors for dangling packed refs
  t3210: test for spurious error messages for dangling packed refs
  refs: change the internal reference-iteration API
  refs: extract a function peel_entry()
  ...
2013-05-29 14:23:49 -07:00
Junio C Hamano
c51afbbd18 Merge branch 'as/check-ignore'
Enhance "check-ignore" (1.8.2 update) to work more like "check-attr"
over bidi-pipes.

* as/check-ignore:
  t0008: use named pipe (FIFO) to test check-ignore streaming
  Documentation: add caveats about I/O buffering for check-{attr,ignore}
  check-ignore: allow incremental streaming of queries via --stdin
  check-ignore: move setup into cmd_check_ignore()
  check-ignore: add -n / --non-matching option
  t0008: remove duplicated test fixture data
2013-05-29 14:23:40 -07:00
Junio C Hamano
77eb44b8ed Merge branch 'jh/checkout-auto-tracking'
Update "git checkout foo" that DWIMs the intended "upstream" and
turns it into "git checkout -t -b foo remotes/origin/foo" to
correctly take existing remote definitions into account.

The remote "origin" may be what uniquely map its own branch to
remotes/some/where/foo but that some/where may not be "origin".

* jh/checkout-auto-tracking:
  glossary: Update and rephrase the definition of a remote-tracking branch
  branch.c: Validate tracking branches with refspecs instead of refs/remotes/*
  t9114.2: Don't use --track option against "svn-remote"-tracking branches
  t7201.24: Add refspec to keep --track working
  t3200.39: tracking setup should fail if there is no matching refspec.
  checkout: Use remote refspecs when DWIMming tracking branches
  t2024: Show failure to use refspec when DWIMming remote branch names
  t2024: Add tests verifying current DWIM behavior of 'git checkout <branch>'
2013-05-29 14:23:10 -07:00
Junio C Hamano
3e1e7624aa Merge branch 'jc/prune-all'
We used the approxidate() parser for "--expire=<timestamp>" options
of various commands, but it is better to treat --expire=all and
--expire=now a bit more specially than using the current timestamp.
Update "git gc" and "git reflog" with a new parsing function for
expiry dates.

* jc/prune-all:
  prune: introduce OPT_EXPIRY_DATE() and use it
  api-parse-options.txt: document "no-" for non-boolean options
  git-gc.txt, git-reflog.txt: document new expiry options
  date.c: add parse_expiry_date()
2013-05-29 14:23:04 -07:00
Junio C Hamano
305e19bdc3 Merge branch 'mh/fetch-into-shallow'
"git fetch" into a shallow repository from a repository that does
not know about the shallow boundary commits (e.g. a different fork
from the repository the current shallow repository was cloned from)
did not work correctly.

* mh/fetch-into-shallow:
  t5500: add test for fetching with an unknown 'shallow'
  upload-pack: ignore 'shallow' lines with unknown obj-ids
2013-05-29 14:20:30 -07:00
Junio C Hamano
1ccb22d524 Merge branch 'js/transport-helper-error-reporting-fix'
Finishing touches to fc/transport-helper-error-reporting topic.

* js/transport-helper-error-reporting-fix:
  git-remote-testgit: build it to run under $SHELL_PATH
  git-remote-testgit: further remove some bashisms
  git-remote-testgit: avoid process substitution
2013-05-29 14:20:25 -07:00
Junio C Hamano
766f0f8ef7 Merge branch 'fc/transport-helper-error-reporting'
Update transport helper to report errors and maintain ref hierarchy
used to keep track of remote helper state better.

* fc/transport-helper-error-reporting:
  transport-helper: fix remote helper namespace regression
  test: remote-helper: add missing and
  t5801: "VAR=VAL shell_func args" is forbidden
  transport-helper: update remote helper namespace
  transport-helper: trivial code shuffle
  transport-helper: warn when refspec is not used
  transport-helper: clarify pushing without refspecs
  transport-helper: update refspec documentation
  transport-helper: clarify *:* refspec
  transport-helper: improve push messages
  transport-helper: mention helper name when it dies
  transport-helper: report errors properly
2013-05-29 14:20:16 -07:00
Felipe Contreras
3646b1a5ab completion: zsh: improve bash script loading
It's better to check in multiple locations, so the user doesn't have to.

And update the documentation.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 12:56:30 -07:00
Stefan Beller
be706c6f4f archive-zip:write_zip_entry: Remove second reset of size variable to zero.
It is set to zero just 3 lines before.
Reported by cppcheck.

Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 12:54:39 -07:00
Kenichi Saita
32eaf1de7f difftool --dir-diff: allow changing any clean working tree file
The temporary directory prepared by "difftool --dir-diff" to
show the result of a change can be modified by the user via
the tree diff program, and we try hard not to lose changes
to them after tree diff program returns to us.

However, the set of files to be copied back is computed
differently between --symlinks and --no-symlinks modes.  The
former checks all paths that start out as identical to the
working tree file, while the latter checks paths that
already had a local modification in the working tree,
allowing changes made in the tree diff program to paths that
did not have any local change to be lost.

Signed-off-by: Kenichi Saita <nitoyon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 12:50:08 -07:00
Ramkumar Ramachandra
35ee69c0f6 push: factor out the detached HEAD error message
With push.default set to upstream or simple, and a detached HEAD, git
push prints the following error:

  $ git push
  fatal: You are not currently on a branch.
  To push the history leading to the current (detached HEAD)
  state now, use

    git push ram HEAD:<name-of-remote-branch>

This error is not unique to upstream or simple: current cannot push with
a detached HEAD either.  So, factor out the error string in preparation
for using it in current.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 12:31:10 -07:00
Nguyễn Thái Ngọc Duy
798c35fcd8 get_sha1: warn about full or short object names that look like refs
When we get 40 hex digits, we immediately assume it's an SHA-1. This
is the right thing to do because we have no way else to specify an
object. If there is a ref with the same object name, it will be
ignored. Warn the user about this case because the ref with full
object name is likely a mistake, for example

    git checkout -b $empty_var $(git rev-parse something)

advice.object_name_warning is not documented because frankly people
should not be aware about it until they encounter this situation.

While at there, warn about ambiguation with abbreviated SHA-1 too.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 11:31:36 -07:00
Felipe Contreras
1306321ebe prompt: fix for simple rebase
When we are rebasing without options ('am' mode), the head rebased lives
in '$g/rebase-apply/head-name', so lets use that information so it's
reported the same way as if we were doing other rebases (-i or -m).

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 11:27:56 -07:00
Ramkumar Ramachandra
587947750b rebase: implement --[no-]autostash and rebase.autostash
This new feature allows a rebase to be executed on a dirty worktree or
index.  It works by creating a temporary "dangling merge commit" out
of the worktree and index changes (via 'git stash create'), and
automatically applying it after a successful rebase or abort.

rebase stores the SHA-1 hex of the temporary merge commit, along with
the rest of the rebase state, in either
.git/{rebase-merge,rebase-apply}/autostash depending on the kind of
rebase.  Since $state_dir is automatically removed at the end of a
successful rebase or abort, so is the autostash.

The advantage of this approach is that we do not affect the normal
stash's reflogs, making the autostash invisible to the end-user.  This
means that you can use 'git stash' during a rebase as usual.

When the autostash application results in a conflict, we push
$state_dir/autostash onto the normal stash and remove $state_dir
ending the rebase.  The user can inspect the stash, and pop or drop at
any time.

Most significantly, this feature means that a caller like pull (with
pull.rebase set to true) can easily be patched to remove the
require_clean_work_tree restriction.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 10:34:54 -07:00
Matthieu Moy
0aa0321212 git-remote-mediawiki: better error message when HTTP(S) access fails
My use-case is an invalid SSL certificate. Pulling from the wiki with a
recent version of libwww-perl fails, and git-remote-mediawiki gave no
clue about the reason. Give the mediawiki API detailed error message, and
since it is not so informative, hint the user about an invalid SSL
certificate on https:// urls.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 10:00:32 -07:00
Phil Hord
b1d04bfcf8 trivial: Add missing period in documentation
Signed-off-by: Phil Hord <hordp@cisco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 15:15:29 -07:00
René Scharfe
25206778aa commit: don't start editor if empty message is given with -m
If an empty message is specified with the option -m of git commit then
the editor is started.  That's unexpected and unnecessary.  Instead of
using the length of the message string for checking if the user
specified one, directly remember if the option -m was given.

Reported-by: Mislav Marohnić <mislav.marohnic@gmail.com>
Signed-off-by: René Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 14:33:01 -07:00
Xidorn Quan
de56ccf799 credential-osxkeychain: support more protocols
Add protocol imap, imaps, ftp and smtp for credential-osxkeychain.

Signed-off-by: Xidorn Quan <quanxunzhen@gmail.com>
Acked-by: John Szakmeister <john@szakmeister.net>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 11:29:47 -07:00
Clemens Buchacher
46ec510ac0 fix segfault with git log -c --follow
In diff_tree_combined we make a copy of diffopts. In
try_to_follow_renames, called via diff_tree_sha1, we free and
re-initialize diffopts->pathspec->items. Since we did not make a deep
copy of diffopts in diff_tree_combined, the original diffopts does not
get the update. By the time we return from diff_tree_combined,
rev->diffopt->pathspec->items points to an invalid memory address. We
get a segfault next time we try to access that pathspec.

Instead, along with the copy of diffopts, make a copy pathspec->items as
well.

We would also have to make a copy of pathspec->raw to keep it consistent
with pathspec->items, but nobody seems to rely on that.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 11:26:24 -07:00
Felipe Contreras
b99d22f29a send-email: remove warning about unset chainreplyto
Three years and a half is probably more than enough time to give users
the opportunity to configure Git to do what they want. If they haven't
changed the configuration by now, this warning message is not going to
do anything for them anyway.

This effectively reverts commit 528fb08 (prepare send-email for smoother
change of --chain-reply-to default).

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 11:17:15 -07:00
Michael Haggerty
5de0c0155c find_first_merges(): remove unnecessary code
No names are ever set for the object_array_entries in merges, so there
is no need to pretend to copy them to the result array.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:01 -07:00
Michael Haggerty
3826902d25 find_first_merges(): initialize merges variable using initializer
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:01 -07:00
Michael Haggerty
16aa3bfc9b fsck: don't put a void*-shaped peg in a char*-shaped hole
The source of this nonsense was

    04d3975937 fsck: reduce stack footprint

, which wedged a pointer to parent into the object_array_entry's name
field.  The parent pointer was passed to traverse_one_object(), even
though that function *didn't use it*.

The useless code has been deleted over time.  Commit

    a1cdc25172 fsck: drop unused parameter from traverse_one_object()

removed the parent pointer from traverse_one_object()'s
signature. Commit

    c0aa335c95 Remove unused variables

removed the code that read the parent pointer back out of the name
field.

This commit takes the last step: don't write the parent pointer into
the name field in the first place.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:01 -07:00
Michael Haggerty
1506510c17 object_array_remove_duplicates(): rewrite to reduce copying
The old version copied one entry to its destination position, then
deleted any matching entries from the tail of the array.  This
required the tail of the array to be copied multiple times.  It didn't
affect the complexity of the algorithm because the whole tail has to
be searched through anyway.  But all the copying was unnecessary.

Instead, check for the existence of an entry with the same name in the
*head* of the list before copying an entry to its final position.
This way each entry has to be copied at most one time.

Extract a helper function contains_name() to do a bit of the work.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:01 -07:00
Michael Haggerty
be6754c67f revision: use object_array_filter() in implementation of gc_boundary()
Use object_array_filter(), which will soon be made smarter about
cleaning up discarded entries properly.  Also add a function comment.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:01 -07:00
Michael Haggerty
aeb4a51ef8 object_array: add function object_array_filter()
Add a function that allows unwanted entries in an object_array to be
removed.  This encapsulation is a step towards giving object_array
ownership of its entries' name memory.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:01 -07:00
Michael Haggerty
ff5f5f268f revision: split some overly-long lines
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:01 -07:00
Michael Haggerty
5b1e14eab3 cmd_diff(): make it obvious which cases are exclusive of each other
At first glance the OBJ_COMMIT, OBJ_TREE, and OBJ_BLOB cases look like
they might be mutually exclusive.  But the OBJ_COMMIT case doesn't end
the loop iteration with "continue" like the other two cases, but
rather falls through.  So use if...else if...else construct to make it
more obvious that only the last two cases are mutually exclusive.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:01 -07:00
Michael Haggerty
026f09e796 cmd_diff(): rename local variable "list" -> "entry"
It's not a list, it's an array entry.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:00 -07:00
Michael Haggerty
33055fa823 cmd_diff(): use an object_array for holding trees
Change cmd_diff() to use a (struct object_array) for holding the trees
that it accumulates, rather than rolling its own equivalent.

Incidentally, this change removes a hard-coded limit of 100 trees in
combined diff, not that it matters in practice.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:00 -07:00
Michael Haggerty
91de344d76 builtin_diff_tree(): make it obvious that function wants two entries
Instead of accepting an array and using exactly two elements from the
array, take two single (struct object_array_entry *) arguments.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:00 -07:00
Michael Haggerty
df835d3a0c add_rev_cmdline(): make a copy of the name argument
Instead of assuming that the memory pointed to by the name argument
will live forever, make a local copy of it before storing it in the
ref_cmdline_info.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:00 -07:00
Michael Haggerty
b87dbcc899 fetch: make own copies of refnames
Do not retain references to refnames passed to the each_ref_fn
callback add_existing(), because their lifetime is not guaranteed.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:00 -07:00
Michael Haggerty
219a0f33ca describe: make own copy of refname
Do not retain a reference to the refname passed to the each_ref_fn
callback get_name(), because there is no guarantee of the lifetimes of
these names.  Instead, make a local copy when needed.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:25:00 -07:00
Nguyễn Thái Ngọc Duy
af0b4a3b59 prune-packed: avoid implying "1" is DRY_RUN in prune_packed_objects()
Commit b60daf0 (Make git-prune-packed a bit more chatty. - 2007-01-12)
changes the meaning of prune_packed_objects()'s argument, from "dry
run or not dry run" to a bitmap.

It however forgot to update prune_packed_objects() caller in
builtin/prune.c to use new DRY_RUN macro. It's fine (for a long time!)
but there is a risk that someday someone may change the value of
DRY_RUN to something else and builtin/prune.c suddenly breaks. Avoid
that possibility.

While at there, change "opts == VERBOSE" to "opts & VERBOSE" as there
is no obvious reason why we only be chatty when DRY_RUN is not set.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:20:54 -07:00
Felipe Contreras
6f87f03897 test: rebase: fix --interactive test
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:03:20 -07:00
Felipe Contreras
15c7348eb0 test: trivial cleanups
No functional changes.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:03:14 -07:00
Felipe Contreras
7a97ee1d84 remote: trivial style cleanup
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 09:03:00 -07:00
John Keeping
823c6d56a8 fetch: don't try to update unfetched tracking refs
Since commit f269048 (fetch: opportunistically update tracking refs,
2013-05-11) we update tracking refs opportunistically when fetching
remote branches.  However, if there is a configured non-pattern refspec
that does not match any of the refspecs given on the command line then a
fatal error occurs.

Fix this by setting the "missing_ok" flag when calling get_fetch_map.

Test-added-by: Jeff King <peff@peff.net>
Signed-off-by: John Keeping <john@keeping.me.uk>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 08:13:14 -07:00
Nguyễn Thái Ngọc Duy
c6807a40dc clone: open a shortcut for connectivity check
In order to make sure the cloned repository is good, we run "rev-list
--objects --not --all $new_refs" on the repository. This is expensive
on large repositories. This patch attempts to mitigate the impact in
this special case.

In the "good" clone case, we only have one pack. If all of the
following are met, we can be sure that all objects reachable from the
new refs exist, which is the intention of running "rev-list ...":

 - all refs point to an object in the pack
 - there are no dangling pointers in any object in the pack
 - no objects in the pack point to objects outside the pack

The second and third checks can be done with the help of index-pack as
a slight variation of --strict check (which introduces a new condition
for the shortcut: pack transfer must be used and the number of objects
large enough to call index-pack). The first is checked in
check_everything_connected after we get an "ok" from index-pack.

"index-pack + new checks" is still faster than the current "index-pack
+ rev-list", which is the whole point of this patch. If any of the
conditions fail, we fall back to the good old but expensive "rev-list
..". In that case it's even more expensive because we have to pay for
the new checks in index-pack. But that should only happen when the
other side is either buggy or malicious.

Cloning linux-2.6 over file://

        before         after
real    3m25.693s      2m53.050s
user    5m2.037s       4m42.396s
sys     0m13.750s      0m16.574s

A more realistic test with ssh:// over wireless

        before         after
real    11m26.629s     10m4.213s
user    5m43.196s      5m19.444s
sys     0m35.812s      0m37.630s

This shortcut is not applied to shallow clones, partly because shallow
clones should have no more objects than a usual fetch and the cost of
rev-list is acceptable, partly to avoid dealing with corner cases when
grafting is involved.

This shortcut does not apply to unpack-objects code path either
because the number of objects must be small in order to trigger that
code path.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 08:07:20 -07:00
Nguyễn Thái Ngọc Duy
920734b069 index-pack: remove dead code (it should never happen)
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 08:07:03 -07:00