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Derrick Stolee 7b8a21dba1 commit-graph: lazy-load trees for commits 
The commit-graph file provides quick access to commit data, including
the OID of the root tree for each commit in the graph. When performing
a deep commit-graph walk, we may not need to load most of the trees
for these commits.

Delay loading the tree object for a commit loaded from the graph
until requested via get_commit_tree(). Do not lazy-load trees for
commits not in the graph, since that requires duplicate parsing
and the relative peformance improvement when trees are not needed
is small.

On the Linux repository, performance tests were run for the following
command:

    git log --graph --oneline -1000

    Before: 0.92s
    After:  0.66s
    Rel %: -28.3%

Adding '-- kernel/' to the command requires loading the root tree
for every commit that is walked. There was no measureable performance
change as a result of this patch.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-11 10:47:16 +09:00
.github
block-sha1
builtin treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
ci Merge branch 'sg/travis-linux32-sanity' 2018-02-13 13:39:16 -08:00
compat Merge branch 'bp/fsmonitor' 2017-11-21 14:07:50 +09:00
contrib treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
Documentation commit-graph: implement "--append" option 2018-04-11 10:43:02 +09:00
ewah Replace Free Software Foundation address in license notices 2017-11-09 13:21:21 +09:00
git-gui Merge branch 'js/misc-git-gui-stuff' of ../git-gui 2018-01-09 11:07:03 -08:00
gitk-git
gitweb Merge branch 'gc/gitweb-filetest-acl' 2017-11-06 14:24:30 +09:00
mergetools
perl Merge branch 'ab/simplify-perl-makefile' 2018-02-13 13:39:03 -08:00
po l10n: de.po: translate 72 new messages 2018-01-15 07:47:30 +01:00
ppc
refs Merge branch 'kg/packed-ref-cache-fix' 2018-02-15 14:55:42 -08:00
sha1collisiondetection@19d97bf5af
sha1dc
t commit-graph: implement "--append" option 2018-04-11 10:43:02 +09:00
templates fsmonitor: simplify determining the git worktree under Windows 2017-11-13 10:02:20 +09:00
vcs-svn Merge branch 'jn/vcs-svn-cleanup' into maint 2017-09-10 17:03:09 +09:00
xdiff Merge branch 'jt/diff-anchored-patience' 2017-12-19 11:33:56 -08:00
.clang-format clang-format: adjust penalty for return type line break 2018-01-24 13:42:04 -08:00
.gitattributes
.gitignore commit-graph: create git-commit-graph builtin 2018-04-02 14:27:38 -07:00
.gitmodules
.mailmap mailmap: use Kaartic Sivaraam's new address 2017-11-03 23:00:07 +09:00
.travis.yml travis-ci: don't install default addon packages for the 32 bit Linux build 2017-12-27 12:14:39 -08:00
.tsan-suppressions
abspath.c real_path: clarify return value ownership 2017-09-27 09:13:47 +09:00
aclocal.m4
advice.c Merge branch 'ls/editor-waiting-message' 2017-12-19 11:33:59 -08:00
advice.h Merge branch 'ls/editor-waiting-message' 2017-12-19 11:33:59 -08:00
alias.c
alloc.c commit: integrate commit graph with commit parsing 2018-04-11 10:43:02 +09:00
apply.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
apply.h apply: remove newfd from struct apply_state 2017-10-06 10:07:18 +09:00
archive-tar.c
archive-zip.c
archive.c refs: convert dwim_ref and expand_ref to struct object_id 2017-10-16 11:05:51 +09:00
archive.h
argv-array.c
argv-array.h
attr.c
attr.h
base85.c
bisect.c Merge branch 'rs/lose-leak-pending' into maint 2018-02-15 15:18:11 -08:00
bisect.h Merge branch 'ma/bisect-leakfix' 2017-11-15 12:14:28 +09:00
blame.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
blame.h
blob.c
blob.h
branch.c Merge branch 'ks/branch-cleanup' 2017-12-27 11:16:25 -08:00
branch.h Merge branch 'ks/branch-cleanup' 2017-12-27 11:16:25 -08:00
builtin.h commit-graph: create git-commit-graph builtin 2018-04-02 14:27:38 -07:00
bulk-checkin.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
bulk-checkin.h
bundle.c Merge branch 'rs/lose-leak-pending' into maint 2018-02-15 15:18:11 -08:00
bundle.h
cache-tree.c Merge branch 'po/object-id' 2018-02-15 14:55:43 -08:00
cache-tree.h
cache.h Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
check-builtins.sh
check-racy.c
check_bindir
checkout.c checkout: factor out functions to new lib file 2017-11-27 09:48:06 +09:00
checkout.h checkout: factor out functions to new lib file 2017-11-27 09:48:06 +09:00
color.c refactor "dumb" terminal determination 2017-12-04 09:38:30 -08:00
color.h
column.c column: do not include pager.c 2017-10-24 10:19:06 +09:00
column.h
combine-diff.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
command-list.txt commit-graph: create git-commit-graph builtin 2018-04-02 14:27:38 -07:00
commit-graph.c commit-graph: lazy-load trees for commits 2018-04-11 10:47:16 +09:00
commit-graph.h commit-graph: lazy-load trees for commits 2018-04-11 10:47:16 +09:00
commit-slab.h commit-slab.h: avoid -Wsign-compare warnings 2017-09-22 13:00:36 +09:00
commit.c commit-graph: lazy-load trees for commits 2018-04-11 10:47:16 +09:00
commit.h commit-graph: lazy-load trees for commits 2018-04-11 10:47:16 +09:00
common-main.c
config.c commit-graph: add core.commitGraph setting 2018-04-11 10:43:01 +09:00
config.h Merge branch 'hm/config-parse-expiry-date' 2017-12-06 09:23:37 -08:00
config.mak.in
config.mak.uname packed_ref_cache: keep the packed-refs file mmapped if possible 2017-09-25 18:02:45 +09:00
configure.ac Makefile: NO_OPENSSL=1 should no longer imply BLK_SHA1=1 2017-12-28 11:55:56 -08:00
connect.c connect: correct style of C-style comment 2017-11-21 14:01:03 +09:00
connect.h
connected.c Merge branch 'jh/partial-clone' 2018-02-13 13:39:04 -08:00
connected.h Convert check_connected to use struct object_id 2017-10-16 11:05:50 +09:00
convert.c Merge branch 'po/object-id' 2018-02-15 14:55:43 -08:00
convert.h convert_to_git(): safe_crlf/checksafe becomes int conv_flags 2018-01-16 12:35:56 -08:00
copy.c
COPYING
credential-cache--daemon.c
credential-cache.c
credential-store.c
credential.c
credential.h
csum-file.c csum-file: refactor finalize_hashfile() method 2018-04-02 14:27:30 -07:00
csum-file.h csum-file: refactor finalize_hashfile() method 2018-04-02 14:27:30 -07:00
ctype.c
daemon.c daemon: fix length computation in newline stripping 2018-01-25 13:50:17 -08:00
date.c
decorate.c decorate: clean up and document API 2017-12-08 09:16:27 -08:00
decorate.h decorate: clean up and document API 2017-12-08 09:16:27 -08:00
delta.h
diff-delta.c Merge branch 'mk/diff-delta-avoid-large-offset' 2017-09-28 14:47:56 +09:00
diff-lib.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
diff-no-index.c diff: make struct diff_flags members lowercase 2017-11-01 11:51:40 +09:00
diff.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
diff.h Merge branch 'sb/diff-blobfind-pickaxe' 2018-01-23 13:16:37 -08:00
diffcore-break.c
diffcore-delta.c diffcore-delta: rename 'new' variables 2018-02-22 10:08:05 -08:00
diffcore-order.c
diffcore-pickaxe.c diff: properly error out when combining multiple pickaxe options 2018-01-04 15:02:40 -08:00
diffcore-rename.c Merge branch 'po/object-id' 2018-02-15 14:55:43 -08:00
diffcore.h
dir-iterator.c
dir-iterator.h
dir.c Merge branch 'nd/trace-index-ops' 2018-02-15 14:55:44 -08:00
dir.h dir: convert struct sha1_stat to use object_id 2018-01-30 10:42:36 -08:00
editor.c launch_editor(): indicate that Git waits for user input 2017-12-07 10:10:19 -08:00
entry.c entry: rename 'new' variables 2018-02-22 10:08:05 -08:00
environment.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
exec_cmd.c
exec_cmd.h
fast-import.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
fetch-object.c unpack-trees: batch fetching of missing blobs 2017-12-08 09:58:51 -08:00
fetch-object.h unpack-trees: batch fetching of missing blobs 2017-12-08 09:58:51 -08:00
fetch-pack.c Merge branch 'jh/partial-clone' 2018-02-13 13:39:04 -08:00
fetch-pack.h fetch-pack, index-pack, transport: partial clone 2017-12-08 09:58:51 -08:00
fmt-merge-msg.h
fsck.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
fsck.h
fsmonitor.c fsmonitor: store fsmonitor bitmap before splitting index 2017-11-10 14:05:01 +09:00
fsmonitor.h fsmonitor: store fsmonitor bitmap before splitting index 2017-11-10 14:05:01 +09:00
generate-cmdlist.sh generate-cmdlist: avoid non-deterministic output 2017-11-22 14:56:30 +09:00
gettext.c
gettext.h
git-add--interactive.perl add--interactive: ignore submodule changes except HEAD 2018-01-16 12:32:45 -08:00
git-archimport.perl archimport: use safe_pipe_capture for user input 2017-09-12 11:08:15 +09:00
git-bisect.sh Merge branch 'sb/bisect-run-empty' 2017-11-15 12:14:36 +09:00
git-compat-util.h wrapper: rename 'template' variables 2018-02-22 10:08:05 -08:00
git-cvsexportcommit.perl
git-cvsimport.perl cvsimport: apply shell-quoting regex globally 2017-12-08 09:02:54 -08:00
git-cvsserver.perl cvsserver: use safe_pipe_capture for constant commands as well 2017-09-11 14:52:29 +09:00
git-difftool--helper.sh
git-filter-branch.sh Merge branch 'dg/filter-branch-filter-order-doc' 2017-10-19 14:45:45 +09:00
git-instaweb.sh
git-merge-octopus.sh Merge branch 'ma/up-to-date' 2017-09-10 17:08:22 +09:00
git-merge-one-file.sh
git-merge-resolve.sh
git-mergetool--lib.sh
git-mergetool.sh
git-p4.py git-p4: update multiple shelved change lists 2017-12-22 13:30:52 -08:00
git-parse-remote.sh
git-quiltimport.sh
git-rebase--am.sh rebase: use mboxrd format to avoid split errors 2017-11-18 12:30:16 +09:00
git-rebase--interactive.sh Merge branch 'js/fix-merge-arg-quoting-in-rebase-p' 2018-01-10 14:01:24 -08:00
git-rebase--merge.sh
git-rebase.sh rebase: rebasing can also be done when HEAD is detached 2017-12-19 10:02:47 -08:00
git-remote-testgit.sh
git-request-pull.sh request-pull: capitalise "Git" to make it a proper noun 2017-10-03 13:11:57 +09:00
git-send-email.perl Merge branch 'ab/simplify-perl-makefile' 2018-02-13 13:39:03 -08:00
git-sh-i18n.sh
git-sh-setup.sh
git-stash.sh Merge branch 'tg/stash-with-pathspec-fix' into maint 2018-02-15 15:18:13 -08:00
git-submodule.sh submodule: port submodule subcommand 'deinit' from shell to C 2018-01-16 11:29:50 -08:00
git-svn.perl Merge branch 'jm/svn-pushmergeinfo-fix' into maint 2018-02-15 15:18:11 -08:00
GIT-VERSION-GEN Git 2.16.2 2018-02-15 15:21:23 -08:00
git-web--browse.sh
git.c commit-graph: create git-commit-graph builtin 2018-04-02 14:27:38 -07:00
git.rc mingw: include the full version information in the resources 2017-11-01 13:43:52 +09:00
gpg-interface.c
gpg-interface.h
graph.c graph: use strbuf_addchars() to add spaces 2017-10-02 13:14:07 +09:00
graph.h
grep.c Merge branch 'ab/pcre2-grep' 2017-12-13 13:28:54 -08:00
grep.h Merge branch 'ab/pcre-v2' into maint 2017-11-21 14:05:30 +09:00
hash.h hash: update obsolete reference to SHA1_HEADER 2018-02-09 09:56:10 -08:00
hashmap.c
hashmap.h Merge branch 'rb/hashmap-h-compilation-fix' 2018-02-13 13:39:10 -08:00
help.c version --build-options: report commit, too, if possible 2017-12-14 22:53:04 -08:00
help.h
hex.c notes: move hex_to_bytes() to hex.c and export it 2017-11-01 10:35:35 +09:00
http-backend.c Merge branch 'rs/resolve-ref-optional-result' 2017-09-28 14:47:56 +09:00
http-fetch.c
http-push.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
http-walker.c sha1_file: remove static strbuf from sha1_file_name() 2018-01-17 12:21:32 -08:00
http.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
http.h
ident.c
imap-send.c imap-send: rename 'new' variables 2018-02-22 10:08:05 -08:00
INSTALL Makefile: replace perl/Makefile.PL with simple make rules 2017-12-11 15:28:10 -08:00
iterator.h
khash.h
kwset.c Replace Free Software Foundation address in license notices 2017-11-09 13:21:21 +09:00
kwset.h Replace Free Software Foundation address in license notices 2017-11-09 13:21:21 +09:00
levenshtein.c
levenshtein.h
LGPL-2.1
line-log.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
line-log.h ALLOC_GROW: avoid -Wsign-compare warnings 2017-09-22 13:21:11 +09:00
line-range.c
line-range.h
list-objects-filter-options.c fetch: inherit filter-spec from partial clone 2017-12-08 09:58:52 -08:00
list-objects-filter-options.h fetch: inherit filter-spec from partial clone 2017-12-08 09:58:52 -08:00
list-objects-filter.c list-objects: filter objects in traverse_commit_list 2017-11-22 14:11:57 +09:00
list-objects-filter.h list-objects: filter objects in traverse_commit_list 2017-11-22 14:11:57 +09:00
list-objects.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
list-objects.h list-objects: filter objects in traverse_commit_list 2017-11-22 14:11:57 +09:00
list.h
ll-merge.c avoid "write_in_full(fd, buf, len) != len" pattern 2017-09-14 15:17:59 +09:00
ll-merge.h
lockfile.c
lockfile.h lockfile: fix documentation on close_lock_file_gently() 2017-10-06 10:07:17 +09:00
log-tree.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
log-tree.h log: add option to choose which refs to decorate 2017-11-22 13:18:59 +09:00
mailinfo.c Merge branch 'jc/mailinfo-cleanup-fix' 2018-02-13 13:39:14 -08:00
mailinfo.h
mailmap.c
mailmap.h
Makefile commit-graph: implement write_commit_graph() 2018-04-02 14:27:38 -07:00
match-trees.c sha1_file: convert write_sha1_file to object_id 2018-01-30 10:42:36 -08:00
merge-blobs.c
merge-blobs.h
merge-recursive.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
merge-recursive.h
merge.c Merge branch 'ew/empty-merge-with-dirty-index-maint' into ew/empty-merge-with-dirty-index 2017-12-22 12:48:38 -08:00
mergesort.c
mergesort.h
name-hash.c trace: measure where the time is spent in the index-heavy operations 2018-02-02 11:20:16 -08:00
notes-cache.c sha1_file: convert write_sha1_file to object_id 2018-01-30 10:42:36 -08:00
notes-cache.h
notes-merge.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
notes-merge.h
notes-utils.c notes: convert write_notes_tree to object_id 2018-01-30 10:42:36 -08:00
notes-utils.h commit: convert commit_tree* to object_id 2018-01-30 10:42:36 -08:00
notes.c sha1_file: convert write_sha1_file to object_id 2018-01-30 10:42:36 -08:00
notes.h notes: convert write_notes_tree to object_id 2018-01-30 10:42:36 -08:00
object.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
object.h Merge branch 'rs/lose-leak-pending' into maint 2018-02-15 15:18:11 -08:00
oidmap.c oidmap: ensure map is initialized 2017-12-27 12:28:06 -08:00
oidmap.h oidmap: add oidmap iterator methods 2017-11-22 14:11:56 +09:00
oidset.c oidset: add iterator methods to oidset 2017-11-22 14:11:56 +09:00
oidset.h oidset: don't return value from oidset_init 2018-01-08 15:24:35 -08:00
pack-bitmap-write.c csum-file: refactor finalize_hashfile() method 2018-04-02 14:27:30 -07:00
pack-bitmap.c pack-bitmap: convert traverse_bitmap_commit_list to object_id 2017-10-16 11:05:51 +09:00
pack-bitmap.h pack-bitmap: convert traverse_bitmap_commit_list to object_id 2017-10-16 11:05:51 +09:00
pack-check.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
pack-objects.c
pack-objects.h
pack-revindex.c packfile: use get_be64() for large offsets 2018-01-19 11:04:56 -08:00
pack-revindex.h
pack-write.c csum-file: refactor finalize_hashfile() method 2018-04-02 14:27:30 -07:00
pack.h csum-file: rename sha1file to hashfile 2018-02-02 11:28:41 -08:00
packfile.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
packfile.h commit-graph: read only from specific pack-indexes 2018-04-11 10:43:02 +09:00
pager.c
parse-options-cb.c
parse-options.c Use MOVE_ARRAY 2018-01-22 11:32:51 -08:00
parse-options.h
patch-delta.c
patch-ids.c diff: make struct diff_flags members lowercase 2017-11-01 11:51:40 +09:00
patch-ids.h
path.c Merge branch 'ao/path-use-xmalloc' 2017-10-28 10:18:40 +09:00
path.h path: document path functions 2017-12-13 11:14:25 -08:00
pathspec.c Merge branch 'ex/deprecate-empty-pathspec-as-match-all' 2017-11-06 13:11:29 +09:00
pathspec.h Merge branch 'bw/pathspec-match-submodule-boundary' 2017-12-19 11:33:56 -08:00
pkt-line.c Merge branch 'bw/protocol-v1' 2017-12-06 09:23:44 -08:00
pkt-line.h pkt-line: add packet_write function 2017-10-17 10:51:29 +09:00
preload-index.c trace: measure where the time is spent in the index-heavy operations 2018-02-02 11:20:16 -08:00
pretty.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
pretty.h format: create docs for pretty.h 2017-12-12 10:41:15 -08:00
prio-queue.c
prio-queue.h
progress.c Merge branch 'en/rename-progress' 2017-12-19 11:33:55 -08:00
progress.h progress: fix progress meters when dealing with lots of work 2017-11-15 13:11:25 +09:00
prompt.c
prompt.h
protocol.c protocol: introduce protocol extension mechanisms 2017-10-17 10:51:29 +09:00
protocol.h protocol: introduce protocol extension mechanisms 2017-10-17 10:51:29 +09:00
quote.c trace: avoid unnecessary quoting 2018-01-16 12:16:54 -08:00
quote.h trace: avoid unnecessary quoting 2018-01-16 12:16:54 -08:00
reachable.c object: rename function 'typename' to 'type_name' 2018-02-14 13:10:05 -08:00
reachable.h
read-cache.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
README.md
ref-filter.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
ref-filter.h
reflog-walk.c refs: convert dwim_log to struct object_id 2017-10-16 11:05:51 +09:00
reflog-walk.h
refs.c log: add option to choose which refs to decorate 2017-11-22 13:18:59 +09:00
refs.h log: add option to choose which refs to decorate 2017-11-22 13:18:59 +09:00
RelNotes Git 2.16.2 2018-02-15 15:21:23 -08:00
remote-curl.c fetch: support filters 2017-12-08 09:58:51 -08:00
remote-testsvn.c refs: convert read_ref and read_ref_full to object_id 2017-10-16 11:05:50 +09:00
remote.c remote: rename 'new' variables 2018-02-22 10:08:05 -08:00
remote.h for-each-ref: let upstream/push report the remote ref name 2017-11-08 10:18:23 +09:00
replace_object.c Use MOVE_ARRAY 2018-01-22 11:32:51 -08:00
repository.c Merge branch 'tg/split-index-fixes' 2018-02-13 13:39:13 -08:00
repository.h Integrate hash algorithm support with repo setup 2017-11-13 13:20:44 +09:00
rerere.c Use MOVE_ARRAY 2018-01-22 11:32:51 -08:00
rerere.h
resolve-undo.c
resolve-undo.h
revision.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
revision.h Merge branch 'jk/cached-commit-buffer' into HEAD 2018-03-13 13:35:25 -07:00
run-command.c run-command.c: print new cwd in trace_run_command() 2018-01-19 10:49:20 -08:00
run-command.h
send-pack.c send-pack: use internal argv_array of struct child_process 2017-12-22 13:33:53 -08:00
send-pack.h
sequencer.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
sequencer.h Merge branch 'pw/sequencer-in-process-commit' 2018-02-13 13:39:15 -08:00
server-info.c
setup.c Merge branch 'jh/fsck-promisors' 2018-02-13 13:39:03 -08:00
sh-i18n--envsubst.c Replace Free Software Foundation address in license notices 2017-11-09 13:21:21 +09:00
sha1-array.c
sha1-array.h
sha1-lookup.c packfile: refactor hash search with fanout table 2018-02-15 13:08:55 -08:00
sha1-lookup.h packfile: refactor hash search with fanout table 2018-02-15 13:08:55 -08:00
sha1_file.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
sha1_name.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
sha1dc_git.c
sha1dc_git.h sha1dc_git.h: re-arrange an ifdef chain for a subsequent change 2017-12-08 15:01:01 -08:00
shallow.c Merge branch 'ma/leakplugs' 2017-09-29 11:23:43 +09:00
shell.c shell: drop git-cvsserver support by default 2017-09-12 11:05:58 +09:00
shortlog.h
show-index.c
sideband.c refactor "dumb" terminal determination 2017-12-04 09:38:30 -08:00
sideband.h
sigchain.c
sigchain.h
split-index.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
split-index.h split-index: rename 'new' variables 2018-02-22 10:08:05 -08:00
strbuf.c Merge branch 'jd/fix-strbuf-add-urlencode-bytes' 2018-01-05 13:28:10 -08:00
strbuf.h strbuf: remove unused stripspace function alias 2017-12-05 08:50:15 -08:00
streaming.c Merge branch 'jk/write-in-full-fix' 2017-09-25 15:24:06 +09:00
streaming.h
string-list.c cleanup: fix possible overflow errors in binary search 2017-10-10 08:57:24 +09:00
string-list.h string-list.h: move documentation from Documentation/api/ into header 2017-09-27 09:14:34 +09:00
sub-process.c Merge branch 'cc/subprocess-handshake-missing-capabilities' into maint 2017-10-18 14:19:10 +09:00
sub-process.h Docs: split out long-running subprocess handshake 2018-01-25 11:24:32 -08:00
submodule-config.c
submodule-config.h implement fetching of moved submodules 2017-10-17 10:27:18 +09:00
submodule.c submodule: rename 'new' variables 2018-02-22 10:08:05 -08:00
submodule.h submodule: rename 'new' variables 2018-02-22 10:08:05 -08:00
symlinks.c
tag.c object: rename function 'typename' to 'type_name' 2018-02-14 13:10:05 -08:00
tag.h
tar.h
tempfile.c tempfile: rename 'template' variables 2018-02-22 10:08:05 -08:00
tempfile.h tempfile: rename 'template' variables 2018-02-22 10:08:05 -08:00
thread-utils.c
thread-utils.h
tmp-objdir.c
tmp-objdir.h
trace.c trace.c: move strbuf_release() out of print_trace_line() 2018-01-16 12:16:54 -08:00
trace.h trace: improve performance while category is disabled 2017-12-06 09:43:02 -08:00
trailer.c trailer: rename 'template' variables 2018-02-22 10:08:05 -08:00
trailer.h
transport-helper.c Merge branch 'jh/partial-clone' 2018-02-13 13:39:04 -08:00
transport-internal.h transport: make transport vtable more private 2017-12-14 14:28:04 -08:00
transport.c Merge branch 'jh/partial-clone' 2018-02-13 13:39:04 -08:00
transport.h Merge branch 'jh/partial-clone' 2018-02-13 13:39:04 -08:00
tree-diff.c diff: make struct diff_flags members lowercase 2017-11-01 11:51:40 +09:00
tree-walk.c Merge branch 'bw/pathspec-match-submodule-boundary' 2017-12-19 11:33:56 -08:00
tree-walk.h
tree.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
tree.h
unicode_width.h
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c Merge branch 'bw/c-plus-plus' into ds/lazy-load-trees 2018-04-11 10:46:32 +09:00
unpack-trees.h
upload-pack.c Merge branch 'jh/partial-clone' 2018-02-13 13:39:04 -08:00
url.c
url.h
urlmatch.c
urlmatch.h
usage.c
userdiff.c Merge branch 'ik/userdiff-html-h-element-fix' into maint 2017-10-18 14:19:02 +09:00
userdiff.h
utf8.c cleanup: fix possible overflow errors in binary search 2017-10-10 08:57:24 +09:00
utf8.h
varint.c
varint.h
version.c version --build-options: report commit, too, if possible 2017-12-14 22:53:04 -08:00
version.h version --build-options: report commit, too, if possible 2017-12-14 22:53:04 -08:00
versioncmp.c
walker.c treewide: replace maybe_tree with accessor methods 2018-04-11 10:47:16 +09:00
walker.h
wildmatch.c
wildmatch.h
worktree.c Merge branch 'bc/object-id' 2017-11-06 14:24:27 +09:00
worktree.h worktree: convert struct worktree to object_id 2017-10-16 11:05:51 +09:00
wrap-for-bin.sh Makefile: replace perl/Makefile.PL with simple make rules 2017-12-11 15:28:10 -08:00
wrapper.c wrapper: rename 'template' variables 2018-02-22 10:08:05 -08:00
write_or_die.c
ws.c
wt-status.c Merge branch 'nd/ita-wt-renames-in-status' 2018-01-23 13:16:28 -08:00
wt-status.h Merge branch 'nd/ita-wt-renames-in-status' 2018-01-23 13:16:28 -08:00
xdiff-interface.c xdiff-interface: export comparing and hashing strings 2017-10-26 11:23:22 +09:00
xdiff-interface.h xdiff-interface: export comparing and hashing strings 2017-10-26 11:23:22 +09:00
zlib.c

README.md

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-.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://public-inbox.org/git/, http://marc.info/?l=git and other archival sites.

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