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Derrick Stolee f3a002bd84 midx: prevent duplicate packfile loads
The multi-pack-index, when present, tracks the existence of objects and
their offsets within a list of packfiles. This allows us to use the
multi-pack-index for object lookups, abbreviations, and object counts.

When the multi-pack-index tracks a packfile, then we do not need to add
that packfile to the packed_git linked list or the MRU list.

We still need to load the packfiles that are not tracked by the
multi-pack-index.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-20 11:27:29 -07:00
.github
Documentation config: create core.multiPackIndex setting 2018-07-20 11:27:28 -07:00
block-sha1
builtin multi-pack-index: add 'write' verb 2018-07-20 11:27:28 -07:00
ci Merge branch 'nd/travis-gcc-8' 2018-05-30 14:04:08 +09:00
compat
contrib Merge branch 'ab/cred-netrc-no-autodie' 2018-06-18 10:18:42 -07:00
ewah ewah_read_mmap: bounds-check mmap reads 2018-06-18 09:13:57 -07:00
git-gui
gitk-git
gitweb
mergetools
perl Merge branch 'ab/git-svn-get-record-typofix' 2018-05-08 15:59:28 +09:00
po l10n: ko.po: Update Korean translation 2018-06-19 02:19:42 +09:00
ppc
refs Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
sha1collisiondetection@19d97bf5af
sha1dc
t config: create core.multiPackIndex setting 2018-07-20 11:27:28 -07:00
templates
vcs-svn Convert remaining die*(BUG) messages 2018-05-06 19:06:14 +09:00
xdiff
.clang-format
.gitattributes
.gitignore multi-pack-index: add builtin 2018-07-20 11:27:26 -07:00
.gitmodules
.mailmap mailmap: update brian m. carlson's email address 2018-05-08 12:21:10 +09:00
.travis.yml travis-ci: run gcc-8 on linux-gcc jobs 2018-05-21 14:14:09 +09:00
.tsan-suppressions
COPYING
GIT-VERSION-GEN Git 2.18 2018-06-21 10:00:06 -07:00
INSTALL
LGPL-2.1
Makefile multi-pack-index: load into memory 2018-07-20 11:27:28 -07:00
README.md note git-security@googlegroups.com in more places 2018-06-01 09:24:11 +09:00
RelNotes Git 2.17.1 2018-05-22 14:28:26 +09:00
abspath.c
aclocal.m4
advice.c Merge branch 'js/deprecate-grafts' 2018-05-23 14:38:17 +09:00
advice.h
alias.c completion: add and use --list-cmds=alias 2018-05-21 13:23:14 +09:00
alias.h completion: add and use --list-cmds=alias 2018-05-21 13:23:14 +09:00
alloc.c
apply.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
apply.h
archive-tar.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
archive-zip.c
archive.c Use OPT_SET_INT_F() for cmdline option specification 2018-05-24 16:12:29 +09:00
archive.h
argv-array.c Merge branch 'ma/unpack-trees-free-msgs' 2018-05-30 21:51:29 +09:00
argv-array.h Merge branch 'ma/unpack-trees-free-msgs' 2018-05-30 21:51:29 +09:00
attr.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
attr.h
base85.c
bisect.c
bisect.h
blame.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
blame.h
blob.c
blob.h
branch.c refspec: rename struct refspec to struct refspec_item 2018-05-18 06:19:41 +09:00
branch.h
builtin.h multi-pack-index: add builtin 2018-07-20 11:27:26 -07:00
bulk-checkin.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
bulk-checkin.h
bundle.c Merge branch 'ma/lockfile-cleanup' 2018-05-30 14:04:05 +09:00
bundle.h
cache-tree.c
cache-tree.h
cache.h Merge branch 'nd/command-list' 2018-06-01 15:06:37 +09:00
chdir-notify.c
chdir-notify.h
check-builtins.sh
check-racy.c
check_bindir
checkout.c refspec: rename struct refspec to struct refspec_item 2018-05-18 06:19:41 +09:00
checkout.h
color.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
color.h
column.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
column.h
combine-diff.c
command-list.txt multi-pack-index: add builtin 2018-07-20 11:27:26 -07:00
commit-graph.c Merge branch 'sb/oid-object-info' 2018-05-23 14:38:16 +09:00
commit-graph.h
commit-slab.h
commit.c Merge branch 'jk/index-pack-maint' 2018-06-13 12:50:46 -07:00
commit.h Merge branch 'nd/pack-struct-commit' 2018-05-30 14:04:08 +09:00
common-main.c Merge branch 'dj/runtime-prefix' 2018-05-08 15:59:17 +09:00
config.c Merge branch 'ma/config-store-data-clear' 2018-05-30 21:51:28 +09:00
config.h Merge branch 'tb/config-default' 2018-05-08 15:59:27 +09:00
config.mak.dev
config.mak.in
config.mak.uname Merge branch 'nd/repack-keep-pack' 2018-05-23 14:38:14 +09:00
configure.ac
connect.c Merge branch 'nd/command-list' 2018-06-01 15:06:37 +09:00
connect.h
connected.c
connected.h
convert.c Merge branch 'ls/checkout-encoding' 2018-05-08 15:59:22 +09:00
convert.h Merge branch 'ls/checkout-encoding' 2018-05-08 15:59:22 +09:00
copy.c
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 Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
decorate.c
decorate.h
delta.h
detect-compiler
diff-delta.c
diff-lib.c
diff-no-index.c
diff.c Merge branch 'bc/object-id' 2018-05-30 14:04:10 +09:00
diff.h add status config and command line options for rename detection 2018-05-13 10:57:37 +09:00
diffcore-break.c
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c regex: do not call `regfree()` if compilation fails 2018-05-21 13:58:32 +09:00
diffcore-rename.c
diffcore.h
dir-iterator.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
dir-iterator.h
dir.c Merge branch 'jk/ewah-bounds-check' 2018-06-18 11:23:22 -07:00
dir.h Merge branch 'bc/object-id' 2018-05-30 14:04:10 +09:00
editor.c
entry.c
environment.c Merge branch 'ls/checkout-encoding' 2018-05-08 15:59:22 +09:00
exec-cmd.c Merge branch 'js/runtime-prefix' 2018-05-08 15:59:34 +09:00
exec-cmd.h Merge branch 'dj/runtime-prefix' 2018-05-08 15:59:17 +09:00
fast-import.c Merge branch 'ma/lockfile-cleanup' 2018-05-30 14:04:05 +09:00
fetch-object.c
fetch-object.h
fetch-pack.c Merge branch 'jt/partial-clone-proto-v2' 2018-05-30 14:04:10 +09:00
fetch-pack.h Merge branch 'bw/protocol-v2' 2018-05-08 15:59:16 +09:00
fmt-merge-msg.h
fsck.c Merge branch 'jk/submodule-fsck-loose-fixup' 2018-06-13 12:50:44 -07:00
fsck.h fsck: detect gitmodules files 2018-05-21 23:55:12 -04:00
fsmonitor.c Merge branch 'jk/snprintf-truncation' 2018-05-30 21:51:28 +09:00
fsmonitor.h
generate-cmdlist.sh git: support --list-cmds=list-<category> 2018-05-21 13:23:14 +09:00
gettext.c Merge branch 'js/runtime-prefix' 2018-05-08 15:59:34 +09:00
gettext.h
git-add--interactive.perl
git-archimport.perl
git-bisect.sh
git-compat-util.h Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
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 'ld/git-p4-updates' 2018-06-18 10:18:41 -07:00
git-parse-remote.sh
git-quiltimport.sh
git-rebase--am.sh
git-rebase--interactive.sh Merge branch 'js/rebase-recreate-merge' 2018-06-01 15:06:40 +09:00
git-rebase--merge.sh
git-rebase.sh
git-remote-testgit.sh
git-request-pull.sh
git-send-email.perl Merge branch 'dd/send-email-reedit' 2018-05-30 14:04:03 +09:00
git-sh-i18n.sh
git-sh-setup.sh
git-stash.sh
git-submodule.sh Merge branch 'sb/submodule-update-try-harder' 2018-05-30 14:04:12 +09:00
git-svn.perl
git-web--browse.sh
git.c multi-pack-index: add builtin 2018-07-20 11:27:26 -07:00
git.rc
gpg-interface.c
gpg-interface.h
graph.c
graph.h
grep.c Merge branch 'ma/regex-no-regfree-after-comp-fail' 2018-05-30 21:51:28 +09:00
grep.h
hash.h
hashmap.c
hashmap.h
help.c Merge branch 'nd/command-list' 2018-06-01 15:06:37 +09:00
help.h completion: allow to customize the completable command list 2018-05-21 13:23:14 +09:00
hex.c
http-backend.c Merge branch 'bw/protocol-v2' 2018-05-08 15:59:16 +09:00
http-fetch.c Merge branch 'ma/http-walker-no-partial' 2018-05-08 15:59:35 +09:00
http-push.c Merge branch 'bw/ref-prefix-for-configured-refspec' 2018-05-30 21:51:26 +09:00
http-walker.c
http.c Merge branch 'bw/remote-curl-compressed-responses' 2018-05-30 21:51:29 +09:00
http.h Merge branch 'jk/snprintf-truncation' 2018-05-30 21:51:28 +09:00
ident.c
imap-send.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
iterator.h
khash.h
kwset.c
kwset.h
levenshtein.c
levenshtein.h
line-log.c Merge branch 'ds/lazy-load-trees' 2018-05-23 14:38:13 +09:00
line-log.h
line-range.c
line-range.h
list-objects-filter-options.c
list-objects-filter-options.h
list-objects-filter.c Merge branch 'sb/oid-object-info' 2018-05-23 14:38:16 +09:00
list-objects-filter.h
list-objects.c
list-objects.h
list.h
ll-merge.c
ll-merge.h
lockfile.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
lockfile.h
log-tree.c Merge branch 'jk/snprintf-truncation' 2018-05-30 21:51:28 +09:00
log-tree.h
ls-refs.c
ls-refs.h
mailinfo.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
mailinfo.h
mailmap.c
mailmap.h
match-trees.c
mem-pool.c
mem-pool.h
merge-blobs.c
merge-blobs.h
merge-recursive.c Merge branch 'en/rename-directory-detection' 2018-06-18 10:18:44 -07:00
merge-recursive.h merge: add merge.renames config setting 2018-05-08 16:19:41 +09:00
merge.c Merge branch 'ma/unpack-trees-free-msgs' 2018-05-30 21:51:29 +09:00
mergesort.c
mergesort.h
midx.c midx: use existing midx when writing new one 2018-07-20 11:27:28 -07:00
midx.h midx: use existing midx when writing new one 2018-07-20 11:27:28 -07:00
name-hash.c
notes-cache.c
notes-cache.h
notes-merge.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
notes-merge.h
notes-utils.c
notes-utils.h
notes.c
notes.h
object-store.h config: create core.multiPackIndex setting 2018-07-20 11:27:28 -07:00
object.c Merge branch 'sb/oid-object-info' 2018-05-23 14:38:16 +09:00
object.h Merge branch 'nd/pack-objects-pack-struct' 2018-05-23 14:38:19 +09:00
oidmap.c
oidmap.h
oidset.c
oidset.h
pack-bitmap-write.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
pack-bitmap.c Merge branch 'jk/ewah-bounds-check' 2018-06-18 11:23:22 -07:00
pack-bitmap.h
pack-check.c
pack-objects.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
pack-objects.h Merge branch 'nd/pack-objects-pack-struct' 2018-05-23 14:38:19 +09:00
pack-revindex.c
pack-revindex.h
pack-write.c
pack.h
packfile.c midx: prevent duplicate packfile loads 2018-07-20 11:27:29 -07:00
packfile.h midx: use midx in abbreviation calculations 2018-07-20 11:27:28 -07:00
pager.c Merge branch 'nd/command-list' 2018-06-01 15:06:37 +09:00
parse-options-cb.c
parse-options.c
parse-options.h
patch-delta.c
patch-ids.c
patch-ids.h
path.c Sync with Git 2.17.1 2018-05-29 17:10:05 +09:00
path.h
pathspec.c Convert remaining die*(BUG) messages 2018-05-06 19:06:14 +09:00
pathspec.h
pkt-line.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
pkt-line.h
preload-index.c
pretty.c Merge branch 'ds/lazy-load-trees' 2018-05-23 14:38:13 +09:00
pretty.h
prio-queue.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
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 Merge branch 'bc/object-id' 2018-05-30 14:04:10 +09:00
ref-filter.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
ref-filter.h Merge branch 'ot/libify-get-ref-atom-value' 2018-05-08 15:59:18 +09:00
reflog-walk.c
reflog-walk.h
refs.c Merge branch 'jk/snprintf-truncation' 2018-05-30 21:51:28 +09:00
refs.h Merge branch 'sb/object-store-replace' 2018-05-08 15:59:21 +09:00
refspec.c Merge branch 'bw/refspec-api' 2018-06-04 21:39:50 +09:00
refspec.h fetch: do not pass ref-prefixes for fetch by exact SHA1 2018-06-01 15:15:22 +09:00
remote-curl.c remote-curl: accept compressed responses with protocol v2 2018-05-23 10:24:13 +09:00
remote-testsvn.c
remote.c Merge branch 'bw/ref-prefix-for-configured-refspec' 2018-05-30 21:51:26 +09:00
remote.h Merge branch 'bw/ref-prefix-for-configured-refspec' 2018-05-30 21:51:26 +09:00
replace-object.c Merge branch 'sb/object-store-replace' 2018-05-23 14:38:09 +09:00
replace-object.h
repository.c Merge branch 'nd/repo-clear-keep-the-index' 2018-05-30 14:04:05 +09:00
repository.h Merge branch 'sb/object-store-replace' 2018-05-08 15:59:21 +09:00
rerere.c Merge branch 'ma/lockfile-cleanup' 2018-05-30 14:04:05 +09:00
rerere.h
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'bc/object-id' 2018-05-30 14:04:10 +09:00
revision.h
run-command.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
run-command.h
send-pack.c
send-pack.h
sequencer.c Merge branch 'js/rebase-i-root-fix' 2018-06-18 11:23:22 -07:00
sequencer.h Merge branch 'js/sequencer-and-root-commits' 2018-05-30 14:04:04 +09:00
serve.c
serve.h
server-info.c
setup.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
sh-i18n--envsubst.c
sha1-array.c get_short_oid: sort ambiguous objects by type, then SHA-1 2018-05-11 14:43:23 +09:00
sha1-array.h get_short_oid: sort ambiguous objects by type, then SHA-1 2018-05-11 14:43:23 +09:00
sha1-file.c Merge branch 'rd/comment-typofix-in-sha1-file' 2018-06-18 10:18:40 -07:00
sha1-lookup.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
sha1-lookup.h
sha1-name.c midx: use midx in abbreviation calculations 2018-07-20 11:27:28 -07:00
sha1dc_git.c
sha1dc_git.h
shallow.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
shell.c Merge branch 'nd/command-list' 2018-06-01 15:06:37 +09:00
shortlog.h
show-index.c
sideband.c
sideband.h
sigchain.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
sigchain.h
split-index.c
split-index.h
strbuf.c Merge branch 'js/use-bug-macro' 2018-05-30 14:04:07 +09:00
strbuf.h Merge branch 'en/rename-directory-detection-reboot' 2018-05-23 14:38:19 +09:00
streaming.c
streaming.h
string-list.c
string-list.h
sub-process.c
sub-process.h
submodule-config.c Merge branch 'bc/object-id' 2018-05-30 14:04:10 +09:00
submodule-config.h Merge branch 'bc/object-id' 2018-05-30 14:04:10 +09:00
submodule.c Merge branch 'jt/submodule-pull-recurse-rebase' 2018-06-04 21:39:48 +09:00
submodule.h Merge branch 'jt/submodule-pull-recurse-rebase' 2018-06-04 21:39:48 +09:00
symlinks.c
tag.c
tag.h
tar.h
tempfile.c
tempfile.h
thread-utils.c
thread-utils.h
tmp-objdir.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
tmp-objdir.h
trace.c
trace.h
trailer.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
trailer.h
transport-helper.c remote: convert apply_refspecs to take a struct refspec 2018-05-18 06:19:43 +09:00
transport-internal.h
transport.c Merge branch 'bw/ref-prefix-for-configured-refspec' 2018-05-30 21:51:26 +09:00
transport.h Merge branch 'bw/ref-prefix-for-configured-refspec' 2018-05-30 21:51:26 +09:00
tree-diff.c
tree-walk.c
tree-walk.h
tree.c Merge branch 'ds/lazy-load-trees' 2018-05-23 14:38:13 +09:00
tree.h
unicode-width.h
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c Merge branch 'ma/unpack-trees-free-msgs' 2018-05-30 21:51:29 +09:00
unpack-trees.h unpack_trees_options: free messages when done 2018-05-22 11:59:31 +09:00
upload-pack.c Merge branch 'jt/partial-clone-proto-v2' 2018-05-30 14:04:10 +09:00
upload-pack.h
url.c
url.h
urlmatch.c
urlmatch.h
usage.c Merge branch 'jk/snprintf-truncation' 2018-05-30 21:51:28 +09:00
userdiff.c
userdiff.h
utf8.c Sync with Git 2.17.1 2018-05-29 17:10:05 +09:00
utf8.h Sync with Git 2.17.1 2018-05-29 17:10:05 +09:00
varint.c
varint.h
version.c
version.h
versioncmp.c
walker.c Merge branch 'ds/lazy-load-trees' 2018-05-23 14:38:13 +09:00
walker.h
wildmatch.c
wildmatch.h
worktree.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
worktree.h
wrap-for-bin.sh
wrapper.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00
write-or-die.c
ws.c
wt-status.c Merge branch 'bc/object-id' 2018-05-30 14:04:10 +09:00
wt-status.h add status config and command line options for rename detection 2018-05-13 10:57:37 +09:00
xdiff-interface.c
xdiff-interface.h
zlib.c Replace all die("BUG: ...") calls by BUG() ones 2018-05-06 19:06:13 +09:00

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