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Patrick Steinhardt 6241ce2170 refs/reftable: reload locked stack when preparing transaction
When starting a reftable transaction we lock all stacks we are about to
modify. While it may happen that the stack is out-of-date at this point
in time we don't really care: transactional updates encode the expected
state of a certain reference, so all that we really want to verify is
that the _current_ value matches that expected state.

Pass `REFTABLE_STACK_NEW_ADDITION_RELOAD` when locking the stack such
that an out-of-date stack will be reloaded after having been locked.
This change is safe because all verifications of the expected state
happen after this step anyway.

Add a testcase that verifies that many writers are now able to write to
the stack concurrently without failures and with a deterministic end
result.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-09-24 09:45:26 -07:00
.github Merge branch 'jk/ci-linux32-update' 2024-09-16 15:27:08 -07:00
Documentation refs/reftable: introduce "reftable.lockTimeout" 2024-09-24 09:45:25 -07:00
block-sha1
builtin Sync with 'maint' 2024-09-16 15:27:46 -07:00
ci Merge branch 'jk/ci-linux32-update' 2024-09-16 15:27:08 -07:00
compat Merge branch 'rj/compat-terminal-unused-fix' 2024-09-10 13:16:42 -07:00
contrib Merge branch 'ps/clar-unit-test' 2024-09-18 18:02:05 -07:00
ewah
git-gui
gitk-git
gitweb
mergetools mergetools: vscode: new tool 2024-09-01 20:47:58 -07:00
negotiator drop trailing newline from warning/error/die messages 2024-09-05 09:07:12 -07:00
oss-fuzz
perl
po
refs refs/reftable: reload locked stack when preparing transaction 2024-09-24 09:45:26 -07:00
reftable reftable/stack: allow locking of outdated stacks 2024-09-24 09:45:25 -07:00
sha1
sha1collisiondetection@855827c583
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t refs/reftable: reload locked stack when preparing transaction 2024-09-24 09:45:26 -07:00
templates
trace2 trace2: implement trace2_printf() for event target 2024-08-22 15:02:31 -07:00
xdiff
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.clang-format Merge branch 'rs/unit-tests-test-run' 2024-08-19 11:07:36 -07:00
.editorconfig
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.gitignore Makefile: wire up the clar unit testing framework 2024-09-04 08:41:37 -07:00
.gitlab-ci.yml Merge branch 'jk/ci-linux32-update' 2024-09-16 15:27:08 -07:00
.gitmodules
.mailmap .mailmap document current address. 2024-09-06 09:31:15 -07:00
.tsan-suppressions
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COPYING
GIT-VERSION-GEN Start preparing for Git 2.46.2 2024-09-16 15:19:05 -07:00
INSTALL
LGPL-2.1
Makefile Merge branch 'ps/clar-unit-test' 2024-09-18 18:02:05 -07:00
README.md
RelNotes Start preparing for Git 2.46.2 2024-09-16 15:19:05 -07:00
SECURITY.md
abspath.c
abspath.h
aclocal.m4
add-interactive.c
add-interactive.h
add-patch.c Merge branch 'ps/config-wo-the-repository' 2024-08-23 09:02:34 -07:00
advice.c
advice.h
alias.c
alias.h
alloc.c
alloc.h
apply.c Merge branch 'jk/apply-patch-mode-check-fix' into maint-2.46 2024-09-12 11:02:15 -07:00
apply.h apply: support --ours, --theirs, and --union for three-way merges 2024-09-09 10:07:24 -07:00
archive-tar.c
archive-zip.c
archive.c builtin/upload-archive: fix leaking args passed to `write_archive()` 2024-08-22 09:18:04 -07:00
archive.h
attr.c
attr.h
banned.h
base85.c
base85.h
bisect.c Merge branch 'ps/pack-refs-auto-heuristics' 2024-09-12 11:47:23 -07:00
bisect.h
blame.c
blame.h
blob.c
blob.h
bloom.c
bloom.h
branch.c
branch.h
builtin.h
bulk-checkin.c
bulk-checkin.h
bundle-uri.c fetch: add top-level trace2 regions 2024-08-22 15:02:31 -07:00
bundle-uri.h
bundle.c Merge branch 'ps/leakfixes-part-5' 2024-09-03 09:15:00 -07:00
bundle.h
cache-tree.c
cache-tree.h
cbtree.c
cbtree.h
chdir-notify.c
chdir-notify.h
check-builtins.sh
checkout.c
checkout.h
chunk-format.c
chunk-format.h
color.c
color.h
column.c
column.h
combine-diff.c
command-list.txt
commit-graph.c
commit-graph.h
commit-reach.c Merge branch 'ds/for-each-ref-is-base' 2024-08-26 11:32:24 -07:00
commit-reach.h
commit-slab-decl.h
commit-slab-impl.h
commit-slab.h
commit.c Merge branch 'ds/for-each-ref-is-base' 2024-08-26 11:32:24 -07:00
commit.h
common-main.c
config.c Merge branch 'ps/maintenance-detach-fix' 2024-08-26 11:32:20 -07:00
config.h Merge branch 'ps/maintenance-detach-fix' 2024-08-26 11:32:20 -07:00
config.mak.dev config.mak.dev: enable -Wunused-parameter by default 2024-08-28 09:51:18 -07:00
config.mak.in
config.mak.uname Merge branch 'rj/cygwin-has-dev-tty' 2024-09-13 15:27:44 -07:00
configure.ac
connect.c
connect.h
connected.c
connected.h
convert.c convert: fix leaks when resetting attributes 2024-08-22 09:18:03 -07:00
convert.h
copy.c
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credential.c
credential.h
csum-file.c Merge branch 'ps/leakfixes-part-4' 2024-08-23 09:02:33 -07:00
csum-file.h Merge branch 'ps/leakfixes-part-4' 2024-08-23 09:02:33 -07:00
ctype.c
daemon.c Merge branch 'jk/mark-unused-parameters' 2024-08-26 11:32:23 -07:00
date.c
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decorate.c
decorate.h
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delta.h
detect-compiler
diagnose.c
diagnose.h
diff-delta.c
diff-lib.c
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diff-no-index.c
diff.c Merge branch 'jc/range-diff-lazy-setup' 2024-09-16 14:22:55 -07:00
diff.h Merge branch 'jc/range-diff-lazy-setup' 2024-09-16 14:22:55 -07:00
diffcore-break.c
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diffcore-pickaxe.c
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diffcore-rotate.c
diffcore.h
dir-iterator.c
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dir.c
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editor.c
editor.h
entry.c
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environment.c
environment.h
exec-cmd.c exec_cmd: RUNTIME_PREFIX on z/OS systems 2024-08-22 08:58:46 -07:00
exec-cmd.h
fetch-negotiator.c
fetch-negotiator.h
fetch-pack.c drop trailing newline from warning/error/die messages 2024-09-05 09:07:12 -07:00
fetch-pack.h
fmt-merge-msg.c
fmt-merge-msg.h
fsck.c
fsck.h
fsmonitor--daemon.h
fsmonitor-ipc.c
fsmonitor-ipc.h
fsmonitor-ll.h
fsmonitor-path-utils.h
fsmonitor-settings.c
fsmonitor-settings.h
fsmonitor.c
fsmonitor.h
generate-cmdlist.sh
generate-configlist.sh
generate-hooklist.sh
gettext.c
gettext.h
git-archimport.perl
git-compat-util.h CodingGuidelines: also mention MAYBE_UNUSED 2024-08-29 11:28:07 -07:00
git-curl-compat.h
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl
git-difftool--helper.sh
git-filter-branch.sh
git-instaweb.sh
git-merge-octopus.sh
git-merge-one-file.sh
git-merge-resolve.sh
git-mergetool--lib.sh
git-mergetool.sh
git-p4.py
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git-send-email.perl Merge branch 'jk/send-email-mailmap' 2024-09-06 10:38:49 -07:00
git-sh-i18n.sh
git-sh-setup.sh
git-submodule.sh
git-svn.perl
git-web--browse.sh
git-zlib.c
git-zlib.h
git.c
git.rc
gpg-interface.c
gpg-interface.h
graph.c
graph.h
grep.c grep: prefer UNUSED to MAYBE_UNUSED for pcre allocators 2024-08-29 13:59:46 -07:00
grep.h
hash-lookup.c
hash-lookup.h
hash.h
hashmap.c
hashmap.h
help.c
help.h
hex-ll.c
hex-ll.h
hex.c
hex.h
hook.c
hook.h
http-backend.c
http-fetch.c
http-push.c
http-walker.c
http.c
http.h
ident.c
ident.h
imap-send.c Merge branch 'jk/mark-unused-parameters' 2024-08-26 11:32:23 -07:00
iterator.h
json-writer.c
json-writer.h
khash.h
kwset.c
kwset.h
levenshtein.c
levenshtein.h
line-log.c
line-log.h
line-range.c
line-range.h
linear-assignment.c
linear-assignment.h
list-objects-filter-options.c
list-objects-filter-options.h
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list.h
lockfile.c
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log-tree.c Merge branch 'jc/range-diff-lazy-setup' 2024-09-16 14:22:55 -07:00
log-tree.h
loose.c drop trailing newline from warning/error/die messages 2024-09-05 09:07:12 -07:00
loose.h
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mailinfo.c Merge branch 'jc/mailinfo-header-cleanup' 2024-09-12 11:47:22 -07:00
mailinfo.h
mailmap.c Merge branch 'jk/send-email-mailmap' 2024-09-06 10:38:49 -07:00
mailmap.h check-mailmap: add options for additional mailmap sources 2024-08-27 14:51:29 -07:00
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merge.c
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mergesort.h
midx-write.c Merge branch 'ps/leakfixes-part-5' 2024-09-03 09:15:00 -07:00
midx.c pack-bitmap: tag bitmapped packs with their corresponding MIDX 2024-08-27 14:50:26 -07:00
midx.h
name-hash.c
name-hash.h
notes-cache.c
notes-cache.h
notes-merge.c
notes-merge.h
notes-utils.c
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notes.c
notes.h
object-file-convert.c
object-file-convert.h
object-file.c Merge branch 'ps/leakfixes-part-4' 2024-08-23 09:02:33 -07:00
object-file.h
object-name.c Merge branch 'ps/leakfixes-part-4' 2024-08-23 09:02:33 -07:00
object-name.h
object-store-ll.h
object-store.h
object.c
object.h
oid-array.c
oid-array.h
oidmap.c
oidmap.h
oidset.c
oidset.h
oidtree.c
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pack-bitmap-write.c Merge branch 'jk/drop-unused-parameters' 2024-08-26 11:32:22 -07:00
pack-bitmap.c pack-bitmap.c: avoid repeated `pack_pos_to_offset()` during reuse 2024-08-27 14:50:27 -07:00
pack-bitmap.h pack-bitmap: tag bitmapped packs with their corresponding MIDX 2024-08-27 14:50:26 -07:00
pack-check.c
pack-mtimes.c
pack-mtimes.h
pack-objects.c
pack-objects.h
pack-revindex.c
pack-revindex.h
pack-write.c
pack.h
packfile.c
packfile.h
pager.c rebase --exec: respect --quiet 2024-08-21 08:57:51 -07:00
pager.h
parallel-checkout.c
parallel-checkout.h
parse-options-cb.c
parse-options.c
parse-options.h
parse.c
parse.h
patch-delta.c
patch-ids.c
patch-ids.h
path.c
path.h
pathspec.c
pathspec.h
pkt-line.c
pkt-line.h
preload-index.c
preload-index.h
pretty.c pretty: fix leaking key/value separator buffer 2024-08-22 09:18:04 -07:00
pretty.h
prio-queue.c
prio-queue.h
progress.c
progress.h
promisor-remote.c
promisor-remote.h
prompt.c
prompt.h
protocol-caps.c
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protocol.c
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pseudo-merge.c Merge branch 'jk/drop-unused-parameters' 2024-08-26 11:32:22 -07:00
pseudo-merge.h
quote.c
quote.h
range-diff.c
range-diff.h
reachable.c
reachable.h
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read-cache.c Merge branch 'ps/maintenance-detach-fix' 2024-08-26 11:32:20 -07:00
read-cache.h
rebase-interactive.c
rebase-interactive.h
rebase.c
rebase.h
ref-filter.c ref-filter: fix leak with unterminated %(if) atoms 2024-09-10 09:26:13 -07:00
ref-filter.h ref-filter: add ref_format_clear() function 2024-09-09 16:26:11 -07:00
reflog-walk.c
reflog-walk.h
reflog.c Merge branch 'jc/reflog-expire-lookup-commit-fix' into maint-2.46 2024-08-26 11:10:21 -07:00
reflog.h
refs.c Merge branch 'jk/mark-unused-parameters' 2024-08-26 11:32:23 -07:00
refs.h
refspec.c
refspec.h
remote-curl.c
remote.c ref-filter: fix leak when formatting %(push:remoteref) 2024-09-09 16:26:10 -07:00
remote.h ref-filter: fix leak when formatting %(push:remoteref) 2024-09-09 16:26:10 -07:00
replace-object.c
replace-object.h
repo-settings.c
repository.c
repository.h
rerere.c Merge branch 'ps/config-wo-the-repository' 2024-08-23 09:02:34 -07:00
rerere.h
reset.c
reset.h
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'jk/free-commit-buffer-of-skipped-commits' into maint-2.46 2024-09-13 15:26:49 -07:00
revision.h
run-command.c
run-command.h
sane-ctype.h
scalar.c scalar: add --no-tags option to 'scalar clone' 2024-09-06 14:13:48 -07:00
send-pack.c drop trailing newline from warning/error/die messages 2024-09-05 09:07:12 -07:00
send-pack.h
sequencer.c Merge branch 'mt/rebase-x-quiet' 2024-08-28 10:31:26 -07:00
sequencer.h
serve.c drop trailing newline from warning/error/die messages 2024-09-05 09:07:12 -07:00
serve.h
server-info.c
server-info.h
setup.c Merge branch 'jk/mark-unused-parameters' 2024-08-26 11:32:23 -07:00
setup.h
sh-i18n--envsubst.c
sha1dc_git.c
sha1dc_git.h
shallow.c
shallow.h
shared.mak
shell.c
shortlog.h
sideband.c Merge branch 'ps/leakfixes-part-5' 2024-09-03 09:15:00 -07:00
sideband.h
sigchain.c
sigchain.h
simple-ipc.h
sparse-index.c
sparse-index.h
split-index.c
split-index.h
stable-qsort.c
statinfo.c
statinfo.h
strbuf.c
strbuf.h
streaming.c
streaming.h
string-list.c
string-list.h
strmap.c
strmap.h
strvec.c
strvec.h
sub-process.c
sub-process.h
submodule-config.c
submodule-config.h
submodule.c Merge branch 'ps/config-wo-the-repository' 2024-08-23 09:02:34 -07:00
submodule.h
symlinks.c
symlinks.h
tag.c
tag.h
tar.h
tempfile.c
tempfile.h
thread-utils.c
thread-utils.h
tmp-objdir.c
tmp-objdir.h
trace.c
trace.h
trace2.c
trace2.h
trailer.c
trailer.h
transport-helper.c
transport-internal.h
transport.c Merge branch 'ps/leakfixes-part-5' 2024-09-03 09:15:00 -07:00
transport.h
tree-diff.c
tree-walk.c
tree-walk.h
tree.c
tree.h
unicode-width.h
unimplemented.sh
unix-socket.c
unix-socket.h
unix-stream-server.c
unix-stream-server.h
unpack-trees.c
unpack-trees.h
upload-pack.c
upload-pack.h
url.c
url.h
urlmatch.c
urlmatch.h
usage.c
userdiff.c
userdiff.h
utf8.c
utf8.h
varint.c
varint.h
version.c
version.h
versioncmp.c
versioncmp.h
walker.c
walker.h
wildmatch.c
wildmatch.h
worktree.c Merge branch 'ps/config-wo-the-repository' 2024-08-23 09:02:34 -07:00
worktree.h
wrap-for-bin.sh
wrapper.c
wrapper.h wrapper: introduce `log2u()` 2024-09-04 08:03:24 -07:00
write-or-die.c
write-or-die.h
ws.c
ws.h
wt-status.c Merge branch 'jc/range-diff-lazy-setup' 2024-09-16 14:22:55 -07:00
wt-status.h
xdiff-interface.c
xdiff-interface.h

README.md

Build status

Git - fast, scalable, distributed revision control system

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.

Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.

See Documentation/gittutorial.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-<commandname>.txt for documentation of each command. If git has been correctly installed, then the tutorial can also be read with man gittutorial or git help tutorial, and the documentation of each command with man git-<commandname> or git help <commandname>.

CVS users may also want to read Documentation/gitcvs-migration.txt (man gitcvs-migration or git help cvs-migration if git is installed).

The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission and Documentation/CodingGuidelines).

Those wishing to help with error message, usage and informational message string translations (localization l10) should see po/README.md (a po file is a Portable Object file that holds the translations).

To subscribe to the list, send an email to git+subscribe@vger.kernel.org (see https://subspace.kernel.org/subscribing.html for details). The mailing list archives are available at https://lore.kernel.org/git/, https://marc.info/?l=git and other archival sites.

Issues which are security relevant should be disclosed privately to the Git Security mailing list git-security@googlegroups.com.

The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.

The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):

  • random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
  • stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
  • "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
  • "goddamn idiotic truckload of sh*t": when it breaks