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Derrick Stolee 1e3497a24c commit-reach: replace ref_newer logic 
The ref_newer method is used by 'git push' to check if a force-push is
required. This method does not use any kind of cutoff when walking, so
in the case of a force-push will walk all reachable commits.

The is_descendant_of method already uses paint_down_to_common along with
cutoffs. By translating the ref_newer arguments into the commit and
commit_list required by is_descendant_of, we can have one fewer commit
walk and also improve our performance!

For a copy of the Linux repository, 'test-tool reach ref_newer' presents
the following improvements with the specified input. In the case that
ref_newer returns 1, there is no improvement. The improvement is in the
second case where ref_newer returns 0.

Input:
A:v4.9
B:v3.19

Before: 0.09 s
 After: 0.09 s

To test the negative case, add a new commit with parent v3.19,
regenerate the commit-graph, and then run with B pointing at that
commit.

Before: 0.43 s
 After: 0.09 s

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-20 15:38:56 -07:00
.github
block-sha1
builtin commit-reach: move ref_newer from remote.c 2018-07-20 15:38:54 -07:00
ci
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Documentation
ewah
git-gui
gitk-git
gitweb
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po
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refs
sha1collisiondetection@19d97bf5af
sha1dc
t test-reach: test commit_contains 2018-07-20 15:38:56 -07:00
templates
vcs-svn
xdiff
.clang-format
.gitattributes
.gitignore
.gitmodules
.mailmap
.travis.yml
.tsan-suppressions
abspath.c
aclocal.m4
advice.c
advice.h
alias.c
alias.h
alloc.c
alloc.h
apply.c
apply.h
archive-tar.c
archive-zip.c
archive.c
archive.h
argv-array.c
argv-array.h
attr.c
attr.h
base85.c
bisect.c commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
bisect.h
blame.c
blame.h
blob.c
blob.h
branch.c
branch.h
builtin.h
bulk-checkin.c
bulk-checkin.h
bundle.c
bundle.h
cache-tree.c
cache-tree.h
cache.h commit-graph: add repo arg to graph readers 2018-07-17 15:47:48 -07:00
chdir-notify.c
chdir-notify.h
check-builtins.sh
check-racy.c
check_bindir
checkout.c
checkout.h
color.c
color.h
column.c
column.h
combine-diff.c
command-list.txt
commit-graph.c commit-graph: add repo arg to graph readers 2018-07-17 15:47:48 -07:00
commit-graph.h commit-graph: add repo arg to graph readers 2018-07-17 15:47:48 -07:00
commit-reach.c commit-reach: replace ref_newer logic 2018-07-20 15:38:56 -07:00
commit-reach.h test-reach: test can_all_from_reach_with_flags 2018-07-20 15:38:56 -07:00
commit-slab-decl.h
commit-slab-impl.h
commit-slab.h
commit.c commit-reach: move walk methods from commit.c 2018-07-20 15:38:54 -07:00
commit.h commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
common-main.c
config.c commit-graph: add repo arg to graph readers 2018-07-17 15:47:48 -07:00
config.h
config.mak.dev
config.mak.in
config.mak.uname
configure.ac
connect.c
connect.h
connected.c
connected.h
convert.c
convert.h
copy.c
COPYING
credential-cache--daemon.c
credential-cache.c
credential-store.c
credential.c
credential.h
csum-file.c
csum-file.h
ctype.c
daemon.c
date.c
decorate.c
decorate.h
delta.h
detect-compiler
diff-delta.c
diff-lib.c
diff-no-index.c
diff.c
diff.h
diffcore-break.c
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c
diffcore-rename.c
diffcore.h
dir-iterator.c
dir-iterator.h
dir.c
dir.h
editor.c
entry.c
environment.c commit-graph: add repo arg to graph readers 2018-07-17 15:47:48 -07:00
exec-cmd.c
exec-cmd.h
fast-import.c commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
fetch-object.c
fetch-object.h
fetch-pack.c
fetch-pack.h
fmt-merge-msg.h
fsck.c
fsck.h
fsmonitor.c
fsmonitor.h
generate-cmdlist.sh
gettext.c
gettext.h
git-add--interactive.perl
git-archimport.perl
git-bisect.sh
git-compat-util.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
git-parse-remote.sh
git-quiltimport.sh
git-rebase--am.sh
git-rebase--interactive.sh
git-rebase--merge.sh
git-rebase--preserve-merges.sh
git-rebase.sh
git-remote-testgit.sh
git-request-pull.sh
git-send-email.perl
git-sh-i18n.sh
git-sh-setup.sh
git-stash.sh
git-submodule.sh
git-svn.perl
GIT-VERSION-GEN
git-web--browse.sh
git.c
git.rc
gpg-interface.c
gpg-interface.h
graph.c
graph.h
grep.c
grep.h
hash.h
hashmap.c
hashmap.h
help.c
help.h
hex.c
http-backend.c
http-fetch.c
http-push.c commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
http-walker.c
http.c
http.h
ident.c
imap-send.c
INSTALL
iterator.h
khash.h
kwset.c
kwset.h
levenshtein.c
levenshtein.h
LGPL-2.1
line-log.c
line-log.h
line-range.c
line-range.h
list-objects-filter-options.c
list-objects-filter-options.h
list-objects-filter.c
list-objects-filter.h
list-objects.c
list-objects.h
list.h
ll-merge.c
ll-merge.h
lockfile.c
lockfile.h
log-tree.c
log-tree.h
ls-refs.c
ls-refs.h
mailinfo.c
mailinfo.h
mailmap.c
mailmap.h
Makefile test-reach: create new test tool for ref_newer 2018-07-20 15:38:55 -07:00
match-trees.c
mem-pool.c
mem-pool.h
merge-blobs.c
merge-blobs.h
merge-recursive.c commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
merge-recursive.h
merge.c
mergesort.c
mergesort.h
name-hash.c
notes-cache.c
notes-cache.h
notes-merge.c commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
notes-merge.h
notes-utils.c
notes-utils.h
notes.c
notes.h
object-store.h commit-graph: store graph in struct object_store 2018-07-17 15:47:48 -07:00
object.c commit-graph: store graph in struct object_store 2018-07-17 15:47:48 -07:00
object.h commit-reach: move can_all_from_reach_with_flags 2018-07-20 15:38:55 -07:00
oidmap.c
oidmap.h
oidset.c
oidset.h
pack-bitmap-write.c commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
pack-bitmap.c
pack-bitmap.h
pack-check.c
pack-objects.c
pack-objects.h
pack-revindex.c
pack-revindex.h
pack-write.c
pack.h
packfile.c
packfile.h
pager.c
parse-options-cb.c
parse-options.c
parse-options.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
pretty.c
pretty.h
prio-queue.c
prio-queue.h
progress.c
progress.h
prompt.c
prompt.h
protocol.c
protocol.h
quote.c
quote.h
reachable.c
reachable.h
read-cache.c
README.md
ref-filter.c commit-reach: move commit_contains from ref-filter 2018-07-20 15:38:54 -07:00
ref-filter.h
reflog-walk.c
reflog-walk.h
refs.c
refs.h
refspec.c
refspec.h
RelNotes
remote-curl.c
remote-testsvn.c
remote.c commit-reach: move ref_newer from remote.c 2018-07-20 15:38:54 -07:00
remote.h commit-reach: move ref_newer from remote.c 2018-07-20 15:38:54 -07:00
replace-object.c
replace-object.h
repository.c
repository.h
rerere.c
rerere.h
resolve-undo.c
resolve-undo.h
revision.c commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
revision.h
run-command.c
run-command.h
send-pack.c
send-pack.h
sequencer.c commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
sequencer.h
serve.c
serve.h
server-info.c
setup.c
sh-i18n--envsubst.c
sha1-array.c
sha1-array.h
sha1-file.c
sha1-lookup.c
sha1-lookup.h
sha1-name.c commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
sha1dc_git.c
sha1dc_git.h
shallow.c commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
shell.c
shortlog.h
sideband.c
sideband.h
sigchain.c
sigchain.h
split-index.c
split-index.h
strbuf.c
strbuf.h
streaming.c
streaming.h
string-list.c
string-list.h
sub-process.c
sub-process.h
submodule-config.c
submodule-config.h
submodule.c commit.h: remove method declarations 2018-07-20 15:38:54 -07:00
submodule.h
symlinks.c
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
trailer.c
trailer.h
transport-helper.c
transport-internal.h
transport.c
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
unpack-trees.c
unpack-trees.h
upload-pack.c commit-reach: move can_all_from_reach_with_flags 2018-07-20 15:38:55 -07:00
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
walker.c
walker.h
wildmatch.c
wildmatch.h
worktree.c
worktree.h
wrap-for-bin.sh
wrapper.c
write-or-die.c
ws.c
wt-status.c
wt-status.h
xdiff-interface.c
xdiff-interface.h
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.

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