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Git with broken hash generation to generate collisions between object IDs. Don't use this! https://undefinedbehavior.de/posts/commit-vandalism/
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4844812b9e
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Abhishek Kumar 4844812b9e commit-graph: introduce commit_graph_data_slab 
The struct commit is used in many contexts. However, members
`generation` and `graph_pos` are only used for commit-graph related
operations and otherwise waste memory.

This wastage would have been more pronounced as we transition to
generation number v2, which uses 64-bit generation number instead of
current 32-bits.

As they are often accessed together, let's introduce struct
commit_graph_data and move them to a commit_graph_data slab.

While the overall test suite runs just as fast as master,
(series: 26m48s, master: 27m34s, faster by 2.87%), certain commands
like `git merge-base --is-ancestor` were slowed by 40% as discovered
by Szeder Gábor [1]. After minimizing commit-slab access, the slow down
persists but is closer to 20%.

Derrick Stolee believes the slow down is attributable to the underlying
algorithm rather than the slowness of commit-slab access [2] and we will
follow-up in a later series.

[1]: https://lore.kernel.org/git/20200607195347.GA8232@szeder.dev/
[2]: https://lore.kernel.org/git/13db757a-9412-7f1e-805c-8a028c4ab2b1@gmail.com/

Signed-off-by: Abhishek Kumar <abhishekkumar8222@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-17 14:37:23 -07:00
.github Merge branch 'js/ci-sdk-download-fix' 2020-05-20 08:33:28 -07:00
block-sha1
builtin object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
ci Merge branch 'jk/ci-only-on-selected-branches' 2020-05-29 15:12:19 -07:00
compat Merge branch 'cb/no-more-gmtime' 2020-05-20 08:33:27 -07:00
contrib Merge branch 'vs/complete-stash-show-p-fix' 2020-06-08 18:06:29 -07:00
Documentation Merge branch 'hn/refs-cleanup' 2020-06-12 13:57:13 -07:00
ewah Merge branch 'jk/object-filter-with-bitmap' 2020-03-02 15:07:18 -08:00
git-gui Merge https://github.com/prati0100/git-gui 2020-05-21 11:15:04 -07:00
gitk-git
gitweb Merge branch 'eb/gitweb-more-trailers' 2020-05-01 13:39:56 -07:00
mergetools
negotiator
perl
po Merge branch 'master' of github.com:ruester/git-po-de 2020-05-30 11:26:53 +08:00
ppc
refs refs: improve documentation for ref iterator 2020-05-20 10:39:02 -07:00
sha1collisiondetection@855827c583
sha1dc
sha256 hash: implement and use a context cloning function 2020-02-24 09:33:21 -08:00
t object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
templates
trace2 trace2: teach Git to log environment variables 2020-03-23 13:14:53 -07:00
vcs-svn
xdiff
.cirrus.yml
.clang-format
.editorconfig
.gitattributes
.gitignore Merge branch 'es/bugreport' 2020-05-01 13:39:59 -07:00
.gitmodules
.mailmap Merge branch 'bc/wildcard-credential' 2020-03-05 10:43:02 -08:00
.travis.yml ci: fix the jobname of the GETTEXT_POISON job 2020-04-07 22:17:10 -07:00
.tsan-suppressions
abspath.c real_path_if_valid(): remove unsafe API 2020-03-10 11:41:40 -07:00
aclocal.m4
add-interactive.c interactive: refactor code asking the user for interactive input 2020-04-10 10:26:31 -07:00
add-interactive.h
add-patch.c Merge branch 'js/checkout-p-new-file' 2020-06-08 18:06:31 -07:00
advice.c Merge branch 'hw/advise-ng' 2020-03-25 13:57:41 -07:00
advice.h Merge branch 'hw/advise-ng' 2020-03-25 13:57:41 -07:00
alias.c
alias.h
alloc.c object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
alloc.h object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
apply.c Use OPT_CALLBACK and OPT_CALLBACK_F 2020-04-28 10:47:10 -07:00
apply.h
archive-tar.c parse_config_key(): return subsection len as size_t 2020-04-10 14:44:29 -07:00
archive-zip.c
archive.c convert: provide additional metadata to filters 2020-03-16 11:37:02 -07:00
archive.h convert: provide additional metadata to filters 2020-03-16 11:37:02 -07:00
argv-array.c
argv-array.h
attr.c
attr.h
banned.h
base85.c
bisect.c bisect: stop referring to sha1_array 2020-03-30 10:59:08 -07:00
bisect.h bisect: libify bisect_next_all 2020-02-19 09:37:15 -08:00
blame.c blame: drop unused parameter from maybe_changed_path 2020-04-23 14:37:03 -07:00
blame.h blame: use changed-path Bloom filters 2020-04-16 15:38:06 -07:00
blob.c object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
blob.h
bloom.c Merge branch 'ds/line-log-on-bloom' 2020-06-08 18:06:26 -07:00
bloom.h Merge branch 'ds/line-log-on-bloom' 2020-06-08 18:06:26 -07:00
branch.c merge: teach --autostash option 2020-04-10 09:28:02 -07:00
branch.h
bugreport.c bugreport: include user interactive shell 2020-05-12 22:02:20 -07:00
builtin.h Lib-ify prune-packed 2020-03-24 15:04:44 -07:00
bulk-checkin.c
bulk-checkin.h
bundle.c
bundle.h
cache-tree.c
cache-tree.h
cache.h Merge branch 'jk/oid-array-cleanups' 2020-04-22 13:42:49 -07:00
chdir-notify.c
chdir-notify.h
check_bindir
check-builtins.sh
checkout.c
checkout.h
CODE_OF_CONDUCT.md
color.c
color.h
column.c
column.h
combine-diff.c oid_array: rename source file from sha1-array 2020-03-30 10:59:08 -07:00
command-list.txt Merge branch 'bc/faq' 2020-05-24 19:39:36 -07:00
commit-graph.c commit-graph: introduce commit_graph_data_slab 2020-06-17 14:37:23 -07:00
commit-graph.h commit-graph: introduce commit_graph_data_slab 2020-06-17 14:37:23 -07:00
commit-reach.c
commit-reach.h
commit-slab-decl.h commit-slab-decl.h: update include guard 2020-05-18 10:33:00 -07:00
commit-slab-impl.h
commit-slab.h commit-slab: clarify slabname##_peek()'s return value 2020-03-10 11:44:24 -07:00
commit.c object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
commit.h shallow: extract a header file for shallow-related functions 2020-04-30 14:19:13 -07:00
common-main.c
config.c config: reject parsing of files over INT_MAX 2020-04-10 14:58:21 -07:00
config.h git_config_parse_key(): return baselen as size_t 2020-04-10 14:52:22 -07:00
config.mak.dev Merge branch 'bc/sha-256-part-1-of-4' 2020-03-26 17:11:20 -07:00
config.mak.in
config.mak.uname Merge branch 'cb/no-more-gmtime' 2020-05-20 08:33:27 -07:00
configure.ac
connect.c stateless-connect: send response end packet 2020-05-24 16:26:00 -07:00
connect.h stateless-connect: send response end packet 2020-05-24 16:26:00 -07:00
connected.c Merge branch 'jt/connectivity-check-optim-in-partial-clone' 2020-04-22 13:42:43 -07:00
connected.h connected: always use partial clone optimization 2020-03-29 10:37:44 -07:00
convert.c parse_config_key(): return subsection len as size_t 2020-04-10 14:44:29 -07:00
convert.h convert: provide additional metadata to filters 2020-03-16 11:37:02 -07:00
copy.c
COPYING
credential-cache--daemon.c
credential-cache.c
credential-store.c Merge branch 'cb/credential-store-ignore-bogus-lines' 2020-05-08 14:25:01 -07:00
credential.c Merge branch 'js/partial-urlmatch' 2020-05-05 14:54:30 -07:00
credential.h credential: correct order of parameters for credential_match 2020-05-04 22:56:33 -07:00
csum-file.c hash: implement and use a context cloning function 2020-02-24 09:33:21 -08:00
csum-file.h
ctype.c
daemon.c
date.c date.c: allow compact version of ISO-8601 datetime 2020-04-24 14:06:09 -07:00
decorate.c
decorate.h
delta-islands.c oid_array: rename source file from sha1-array 2020-03-30 10:59:08 -07:00
delta-islands.h
delta.h
detect-compiler
diff-delta.c
diff-lib.c
diff-no-index.c
diff.c diff: add config option relative 2020-05-24 16:23:59 -07:00
diff.h diff: halt tree-diff early after max_changes 2020-03-30 09:59:53 -07:00
diffcore-break.c diff: restrict when prefetching occurs 2020-04-07 16:09:29 -07:00
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c
diffcore-rename.c diff: restrict when prefetching occurs 2020-04-07 16:09:29 -07:00
diffcore.h diff: restrict when prefetching occurs 2020-04-07 16:09:29 -07:00
dir-iterator.c
dir-iterator.h
dir.c Merge branch 'en/fill-directory-exponential' 2020-04-29 16:15:31 -07:00
dir.h
editor.c real_path: remove unsafe API 2020-03-10 11:41:40 -07:00
entry.c convert: provide additional metadata to filters 2020-03-16 11:37:02 -07:00
environment.c Merge branch 'tb/shallow-cleanup' 2020-05-13 12:19:18 -07:00
exec-cmd.c
exec-cmd.h
fast-import.c Merge branch 'en/fast-import-looser-date' 2020-06-02 13:35:05 -07:00
fetch-negotiator.c
fetch-negotiator.h
fetch-pack.c stateless-connect: send response end packet 2020-05-24 16:26:00 -07:00
fetch-pack.h
fmt-merge-msg.c Merge branch 'dd/sparse-fixes' 2020-05-01 13:39:56 -07:00
fmt-merge-msg.h Lib-ify fmt-merge-msg 2020-03-24 15:04:43 -07:00
fsck.c Merge branch 'rs/fsck-duplicate-names-in-trees' 2020-06-08 18:06:29 -07:00
fsck.h
fsmonitor.c
fsmonitor.h
fuzz-commit-graph.c commit-graph: close descriptors after mmap 2020-04-24 22:25:50 -07:00
fuzz-pack-headers.c
fuzz-pack-idx.c
generate-cmdlist.sh help: move list_config_help to builtin/help 2020-04-16 15:22:16 -07:00
generate-configlist.sh help: move list_config_help to builtin/help 2020-04-16 15:22:16 -07:00
gettext.c
gettext.h
git-add--interactive.perl checkout -p: handle new files correctly 2020-05-27 14:50:20 -07:00
git-archimport.perl
git-bisect.sh bisect: avoid tailing CR characters from revision in replay 2020-05-20 10:13:19 -07:00
git-compat-util.h Merge branch 'cb/no-more-gmtime' 2020-05-20 08:33:27 -07:00
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 Merge branch 'bk/p4-prepare-p4-only-fix' 2020-06-02 13:35:01 -07:00
git-parse-remote.sh
git-quiltimport.sh
git-rebase--preserve-merges.sh
git-request-pull.sh
git-send-email.perl
git-sh-i18n.sh
git-sh-setup.sh
git-submodule.sh submodule: port subcommand 'set-url' from shell to C 2020-05-08 09:17:55 -07:00
git-svn.perl
GIT-VERSION-GEN Git 2.27 2020-05-31 23:03:57 -07:00
git-web--browse.sh
git.c Merge branch 'tb/shallow-cleanup' 2020-05-13 12:19:18 -07:00
git.rc
gpg-interface.c gpg-interface: prefer check_signature() for GPG verification 2020-03-15 09:46:28 -07:00
gpg-interface.h gpg-interface: prefer check_signature() for GPG verification 2020-03-15 09:46:28 -07:00
graph.c graph.c: limit linkage of internal variable 2020-04-27 11:21:25 -07:00
graph.h
grep.c
grep.h
hash.h hash: implement and use a context cloning function 2020-02-24 09:33:21 -08:00
hashmap.c
hashmap.h
help.c help: add shell-path to --build-options 2020-05-12 22:02:17 -07:00
help.h bugreport: gather git version and build info 2020-04-16 15:23:42 -07:00
hex.c hex: add functions to parse hex object IDs in any algorithm 2020-02-24 09:33:21 -08:00
http-backend.c
http-fetch.c
http-push.c
http-walker.c
http.c http, imap-send: stop using CURLOPT_VERBOSE 2020-05-11 11:18:01 -07:00
http.h http, imap-send: stop using CURLOPT_VERBOSE 2020-05-11 11:18:01 -07:00
ident.c
imap-send.c http, imap-send: stop using CURLOPT_VERBOSE 2020-05-11 11:18:01 -07:00
INSTALL INSTALL: drop support for docbook-xsl before 1.74 2020-03-29 09:25:38 -07:00
interdiff.c
interdiff.h
iterator.h
json-writer.c
json-writer.h
khash.h
kwset.c
kwset.h
levenshtein.c
levenshtein.h
LGPL-2.1
line-log.c Merge branch 'ds/line-log-on-bloom' 2020-06-08 18:06:26 -07:00
line-log.h line-log: more responsive, incremental 'git log -L' 2020-05-11 09:33:56 -07:00
line-range.c
line-range.h
linear-assignment.c
linear-assignment.h
list-objects-filter-options.c
list-objects-filter-options.h Use OPT_CALLBACK and OPT_CALLBACK_F 2020-04-28 10:47:10 -07:00
list-objects-filter.c list-objects-filter: treat NULL filter_options as "disabled" 2020-05-04 21:57:58 -07:00
list-objects-filter.h
list-objects.c
list-objects.h
list.h
ll-merge.c parse_config_key(): return subsection len as size_t 2020-04-10 14:44:29 -07:00
ll-merge.h
lockfile.c lockfile.c: introduce 'hold_lock_file_for_update_mode' 2020-04-27 11:27:36 -07:00
lockfile.h lockfile.c: introduce 'hold_lock_file_for_update_mode' 2020-04-27 11:27:36 -07:00
log-tree.c Merge branch 'ds/log-exclude-decoration-config' 2020-04-28 15:50:08 -07:00
log-tree.h log: add log.excludeDecoration config option 2020-04-16 11:05:48 -07:00
ls-refs.c upload-pack: handle unexpected delim packets 2020-03-27 12:18:48 -07:00
ls-refs.h
mailinfo.c mailinfo: disallow NUL character in mail's header 2020-04-22 14:01:03 -07:00
mailinfo.h
mailmap.c
mailmap.h
Makefile Merge branch 'lo/sparse-universal-zero-init' 2020-06-02 13:35:04 -07:00
match-trees.c
mem-pool.c
mem-pool.h
merge-blobs.c
merge-blobs.h
merge-recursive.c merge-recursive: fix rename/rename(1to2) for working tree with a binary 2020-05-14 12:14:19 -07:00
merge-recursive.h
merge.c builtin/checkout: compute checkout metadata for checkouts 2020-03-16 11:37:02 -07:00
mergesort.c
mergesort.h
midx.c multi-pack-index: respect repack.packKeptObjects=false 2020-05-10 09:50:55 -07:00
midx.h Merge branch 'ds/multi-pack-index' 2020-05-01 13:39:55 -07:00
name-hash.c
notes-cache.c
notes-cache.h
notes-merge.c
notes-merge.h
notes-utils.c
notes-utils.h
notes.c Merge branch 'jh/notes-fanout-fix' into maint 2020-03-17 15:02:22 -07:00
notes.h
object-store.h oid_array: rename source file from sha1-array 2020-03-30 10:59:08 -07:00
object.c object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
object.h object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
oid-array.c oid_array: rename source file from sha1-array 2020-03-30 10:59:08 -07:00
oid-array.h oid_array: rename source file from sha1-array 2020-03-30 10:59:08 -07:00
oidmap.c
oidmap.h
oidset.c oidset: introduce 'oidset_size' 2020-04-15 09:20:29 -07:00
oidset.h Merge branch 'tb/commit-graph-split-strategy' 2020-05-01 13:39:52 -07:00
pack-bitmap-write.c
pack-bitmap.c pack-bitmap: pass object filter to fill-in traversal 2020-05-04 21:57:58 -07:00
pack-bitmap.h Merge branch 'jk/object-filter-with-bitmap' 2020-03-02 15:07:18 -08:00
pack-check.c pack-check: push oid lookup into loop 2020-02-24 12:55:53 -08:00
pack-objects.c pack-objects: convert oe_set_delta_ext() to use object_id 2020-02-24 12:55:52 -08:00
pack-objects.h pack-objects: convert oe_set_delta_ext() to use object_id 2020-02-24 12:55:52 -08:00
pack-revindex.c
pack-revindex.h
pack-write.c
pack.h
packfile.c packfile: drop nth_packed_object_sha1() 2020-02-24 12:55:53 -08:00
packfile.h packfile: drop nth_packed_object_sha1() 2020-02-24 12:55:53 -08:00
pager.c
parse-options-cb.c oid_array: rename source file from sha1-array 2020-03-30 10:59:08 -07:00
parse-options.c parse-options: teach "git cmd -h" to show alias as alias 2020-03-16 14:27:07 -07:00
parse-options.h merge: teach --autostash option 2020-04-10 09:28:02 -07:00
patch-delta.c
patch-ids.c
patch-ids.h
path.c Merge branch 'dl/merge-autostash' 2020-04-29 16:15:27 -07:00
path.h merge: teach --autostash option 2020-04-10 09:28:02 -07:00
pathspec.c prefix_path: show gitdir if worktree unavailable 2020-03-15 09:35:46 -07:00
pathspec.h
pkt-line.c pkt-line: define PACKET_READ_RESPONSE_END 2020-05-24 16:26:00 -07:00
pkt-line.h pkt-line: define PACKET_READ_RESPONSE_END 2020-05-24 16:26:00 -07:00
preload-index.c
pretty.c format-patch: teach --no-encode-email-headers 2020-04-07 22:37:18 -07:00
pretty.h format-patch: teach --no-encode-email-headers 2020-04-07 22:37:18 -07:00
prio-queue.c
prio-queue.h
progress.c progress: call trace2_region_leave() only after calling _enter() 2020-05-15 09:41:30 -07:00
progress.h progress.c: silence cgcc suggestion about internal linkage 2020-04-27 11:21:28 -07:00
promisor-remote.c Merge branch 'jt/avoid-prefetch-when-able-in-diff' 2020-04-28 15:50:04 -07:00
promisor-remote.h promisor-remote: accept 0 as oid_nr in function 2020-04-02 12:42:32 -07:00
prompt.c interactive: explicitly fflush stdout before expecting input 2020-04-10 10:27:16 -07:00
prompt.h interactive: refactor code asking the user for interactive input 2020-04-10 10:26:31 -07:00
protocol.c config: let feature.experimental imply protocol.version=2 2020-05-21 09:31:42 -07:00
protocol.h
prune-packed.c Lib-ify prune-packed 2020-03-24 15:04:44 -07:00
prune-packed.h Lib-ify prune-packed 2020-03-24 15:04:44 -07:00
quote.c quote: use isalnum() to check for alphanumeric characters 2020-02-24 09:30:29 -08:00
quote.h
range-diff.c range-diff: avoid negative string precision 2020-04-15 18:32:48 -07:00
range-diff.h
reachable.c
reachable.h
read-cache.c
README.md ci: retire the Azure Pipelines definition 2020-04-10 10:30:40 -07:00
rebase-interactive.c Merge branch 'rt/format-zero-length-fix' 2020-03-09 11:21:21 -07:00
rebase-interactive.h Merge branch 'en/rebase-backend' 2020-03-02 15:07:19 -08:00
rebase.c
rebase.h
ref-filter.c Merge branch 'jk/for-each-ref-multi-key-sort-fix' 2020-05-08 14:25:04 -07:00
ref-filter.h Merge branch 'jk/for-each-ref-multi-key-sort-fix' 2020-05-08 14:25:04 -07:00
reflog-walk.c
reflog-walk.h
refs.c object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
refs.h refs.h: clarify reflog iteration order 2020-05-20 10:39:01 -07:00
refspec.c
refspec.h
RelNotes Start the post 2.27 cycle 2020-06-02 13:35:05 -07:00
remote-curl.c stateless-connect: send response end packet 2020-05-24 16:26:00 -07:00
remote-testsvn.c
remote.c parse_config_key(): return subsection len as size_t 2020-04-10 14:44:29 -07:00
remote.h stateless-connect: send response end packet 2020-05-24 16:26:00 -07:00
replace-object.c
replace-object.h
repo-settings.c config: set pack.useSparse=true by default 2020-03-20 14:22:31 -07:00
repository.c repository: require a build flag to use SHA-256 2020-02-24 09:33:21 -08:00
repository.h Merge branch 'jc/missing-ref-store-fix' 2020-04-22 13:42:55 -07:00
rerere.c
rerere.h
reset.c Merge branch 'dl/merge-autostash' 2020-04-29 16:15:27 -07:00
reset.h reset: extract reset_head() from rebase 2020-04-10 09:28:02 -07:00
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'ds/line-log-on-bloom' 2020-06-08 18:06:26 -07:00
revision.h Merge branch 'gs/commit-graph-path-filter' 2020-05-01 13:39:53 -07:00
run-command.c Merge branch 'jc/auto-gc-quiet' 2020-05-13 12:19:19 -07:00
run-command.h auto-gc: extract a reusable helper from "git fetch" 2020-05-07 12:24:33 -07:00
send-pack.c Merge branch 'tb/shallow-cleanup' 2020-05-13 12:19:18 -07:00
send-pack.h
sequencer.c Merge branch 'js/rebase-autosquash-double-fixup-fix' 2020-05-14 14:39:43 -07:00
sequencer.h Merge branch 'dl/merge-autostash' 2020-04-29 16:15:27 -07:00
serve.c pkt-line: define PACKET_READ_RESPONSE_END 2020-05-24 16:26:00 -07:00
serve.h
server-info.c
setup.c Merge branch 'bc/sha-256-part-1-of-4' 2020-03-26 17:11:20 -07:00
sh-i18n--envsubst.c
sha1-file.c Merge branch 'lr/freshen-file-fix' 2020-04-28 15:49:56 -07:00
sha1-lookup.c
sha1-lookup.h
sha1-name.c Merge branch 'jc/missing-ref-store-fix' 2020-04-22 13:42:55 -07:00
sha1dc_git.c
sha1dc_git.h
shallow.c Merge branch 'tb/shallow-cleanup' 2020-05-13 12:19:18 -07:00
shallow.h shallow: use struct 'shallow_lock' for additional safety 2020-04-30 14:19:13 -07:00
shell.c interactive: refactor code asking the user for interactive input 2020-04-10 10:26:31 -07:00
shortlog.h
sideband.c
sideband.h
sigchain.c
sigchain.h
split-index.c
split-index.h
stable-qsort.c
strbuf.c Merge branch 'bc/wildcard-credential' 2020-05-05 14:54:26 -07:00
strbuf.h Merge branch 'bc/wildcard-credential' 2020-05-05 14:54:26 -07:00
streaming.c
streaming.h
string-list.c
string-list.h
sub-process.c
sub-process.h
submodule-config.c parse_config_key(): return subsection len as size_t 2020-04-10 14:44:29 -07:00
submodule-config.h
submodule.c Merge branch 'jk/oid-array-cleanups' 2020-04-22 13:42:49 -07:00
submodule.h get_superproject_working_tree(): return strbuf 2020-03-10 11:41:40 -07:00
symlinks.c
tag.c object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
tag.h
tar.h
tempfile.c tempfile.c: introduce 'create_tempfile_mode' 2020-04-27 11:27:35 -07:00
tempfile.h tempfile.c: introduce 'create_tempfile_mode' 2020-04-27 11:27:35 -07:00
thread-utils.c
thread-utils.h
tmp-objdir.c
tmp-objdir.h
trace2.c trace2: teach Git to log environment variables 2020-03-23 13:14:53 -07:00
trace2.h trace2: teach Git to log environment variables 2020-03-23 13:14:53 -07:00
trace.c http, imap-send: stop using CURLOPT_VERBOSE 2020-05-11 11:18:01 -07:00
trace.h http, imap-send: stop using CURLOPT_VERBOSE 2020-05-11 11:18:01 -07:00
trailer.c
trailer.h
transport-helper.c transport-helper: new method reject_atomic_push() 2020-04-17 12:16:32 -07:00
transport-internal.h
transport.c stateless-connect: send response end packet 2020-05-24 16:26:00 -07:00
transport.h transport-helper: new method reject_atomic_push() 2020-04-17 12:16:32 -07:00
tree-diff.c diff: halt tree-diff early after max_changes 2020-03-30 09:59:53 -07:00
tree-walk.c
tree-walk.h
tree.c object: drop parsed_object_pool->commit_count 2020-06-17 14:37:14 -07:00
tree.h
unicode-width.h unicode: update the width tables to Unicode 13.0 2020-03-17 15:06:37 -07:00
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c Merge branch 'en/sparse-checkout' 2020-05-20 08:33:29 -07:00
unpack-trees.h Merge branch 'en/sparse-checkout' 2020-04-29 16:15:30 -07:00
upload-pack.c upload-pack: use upload_pack_data fields in receive_needs() 2020-05-18 12:58:02 -07:00
upload-pack.h
url.c
url.h
urlmatch.c credential: handle credential.<partial-URL>.<key> again 2020-04-24 15:53:46 -07:00
urlmatch.h credential: handle credential.<partial-URL>.<key> again 2020-04-24 15:53:46 -07:00
usage.c
userdiff.c Merge branch 'ah/userdiff-markdown' 2020-05-08 14:25:01 -07:00
userdiff.h
utf8.c
utf8.h
varint.c
varint.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
version.c
version.h
versioncmp.c
walker.c Merge branch 'rs/show-progress-in-dumb-http-fetch' 2020-03-09 11:21:21 -07:00
walker.h remote-curl: show progress for fetches over dumb HTTP 2020-03-03 13:15:40 -08:00
wildmatch.c
wildmatch.h
worktree.c Merge branch 'bc/sha-256-part-1-of-4' 2020-03-26 17:11:20 -07:00
worktree.h worktree: add utility to find worktree by pathname 2020-02-24 13:04:30 -08:00
wrap-for-bin.sh
wrapper.c Merge branch 'dl/wrapper-fix-indentation' 2020-04-22 13:42:47 -07:00
write-or-die.c
ws.c
wt-status.c Fix error-prone fill_directory() API; make it only return matches 2020-04-01 11:11:31 -07:00
wt-status.h
xdiff-interface.c
xdiff-interface.h
zlib.c

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). To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at https://lore.kernel.org/git/, http://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