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Jeff King 30cdc33fba pack-bitmap: save "have" bitmap from walk
When we do a bitmap walk, we save the result, which
represents (WANTs & ~HAVEs); i.e., every object we care
about visiting in our walk. However, we throw away the
haves bitmap, which can sometimes be useful, too. Save it
and provide an access function so code which has performed a
walk can query it.

A few notes on the accessor interface:

 - the bitmap code calls these "haves" because it grew out
   of the want/have negotiation for fetches. But really,
   these are simply the objects that would be flagged
   UNINTERESTING in a regular traversal. Let's use that
   more universal nomenclature for the external module
   interface. We may want to change the internal naming
   inside the bitmap code, but that's outside the scope of
   this patch.

 - it still uses a bare "sha1" rather than "oid". That's
   true of all of the bitmap code. And in this particular
   instance, our caller in pack-objects is dealing with the
   bare sha1 that comes from a packed REF_DELTA (we're
   pointing directly to the mmap'd pack on disk). That's
   something we'll have to deal with as we transition to a
   new hash, but we can wait and see how the caller ends up
   being fixed and adjust this interface accordingly.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-21 12:33:39 -07:00
.github
block-sha1
builtin Merge branch 'nd/cherry-pick-quit-fix' 2018-08-20 12:41:34 -07:00
ci Merge branch 'sg/travis-retrieve-trash-upon-failure' 2018-08-15 15:08:28 -07:00
compat Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
contrib Merge branch 'js/range-diff' 2018-08-20 11:33:53 -07:00
Documentation Git 2.19-rc0 2018-08-20 12:53:58 -07:00
ewah
git-gui
gitk-git
gitweb
mergetools
negotiator
perl
po
ppc
refs Merge branch 'jk/size-t' 2018-08-15 15:08:25 -07:00
sha1collisiondetection@232357eb2e
sha1dc
t t/perf: add perf tests for fetches from a bitmapped server 2018-08-20 14:04:47 -07:00
templates
vcs-svn
xdiff Merge branch 'sb/indent-heuristic-optim' 2018-08-17 13:09:57 -07:00
.clang-format
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.gitignore Merge branch 'js/range-diff' 2018-08-20 11:33:53 -07:00
.gitmodules
.mailmap
.travis.yml
.tsan-suppressions
abspath.c
aclocal.m4
advice.c
advice.h
alias.c
alias.h
alloc.c alloc: make allocate_alloc_state and clear_alloc_state more consistent 2018-08-15 11:52:09 -07:00
alloc.h alloc: make allocate_alloc_state and clear_alloc_state more consistent 2018-08-15 11:52:09 -07:00
apply.c apply.c: remove implicit dependency on the_index 2018-08-13 14:14:44 -07:00
apply.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
archive-tar.c Merge branch 'nd/no-the-index' 2018-08-20 11:33:53 -07:00
archive-zip.c Merge branch 'nd/no-the-index' 2018-08-20 11:33:53 -07:00
archive.c archive.c: avoid access to the_index 2018-08-13 14:14:43 -07:00
archive.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
argv-array.c
argv-array.h
attr.c attr: remove index from git_attr_set_direction() 2018-08-13 14:14:43 -07:00
attr.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
banned.h
base85.c
bisect.c
bisect.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
blame.c blame.c: remove implicit dependency on the_index 2018-08-13 14:14:44 -07:00
blame.h blame.c: remove implicit dependency on the_index 2018-08-13 14:14:44 -07:00
blob.c
blob.h
branch.c
branch.h Move definition of enum branch_track from cache.h to branch.h 2018-08-15 11:52:09 -07:00
builtin.h
bulk-checkin.c
bulk-checkin.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
bundle.c
bundle.h
cache-tree.c cache-tree: wrap the_index based wrappers with #ifdef 2018-08-13 14:14:42 -07:00
cache-tree.h cache-tree: wrap the_index based wrappers with #ifdef 2018-08-13 14:14:42 -07:00
cache.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -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 Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
combine-diff.c
command-list.txt
commit-graph.c Merge branch 'jk/for-each-object-iteration' 2018-08-20 11:33:52 -07:00
commit-graph.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
commit-slab-decl.h
commit-slab-impl.h
commit-slab.h
commit.c
commit.h
common-main.c
config.c Merge branch 'sb/config-write-fix' 2018-08-20 12:41:32 -07:00
config.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
config.mak.dev
config.mak.in
config.mak.uname
configure.ac
connect.c
connect.h
connected.c
connected.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
convert.c Merge branch 'nd/no-the-index' 2018-08-20 11:33:53 -07:00
convert.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
copy.c
COPYING
credential-cache--daemon.c
credential-cache.c
credential-store.c
credential.c
credential.h
csum-file.c
csum-file.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
ctype.c
daemon.c
date.c
decorate.c
decorate.h
delta.h
detect-compiler
diff-delta.c
diff-lib.c dir.c: remove an implicit dependency on the_index in pathspec code 2018-08-13 14:14:42 -07:00
diff-no-index.c
diff.c Merge branch 'js/range-diff' 2018-08-20 11:33:53 -07:00
diff.h Merge branch 'js/range-diff' 2018-08-20 11:33:53 -07:00
diffcore-break.c
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c
diffcore-rename.c
diffcore.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
dir-iterator.c
dir-iterator.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
dir.c Merge branch 'nd/no-the-index' 2018-08-20 11:33:53 -07:00
dir.h dir.c: remove an implicit dependency on the_index in pathspec code 2018-08-13 14:14:42 -07:00
editor.c
entry.c entry.c: use the right index instead of the_index 2018-08-13 14:14:43 -07:00
environment.c Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
exec-cmd.c
exec-cmd.h
fast-import.c
fetch-negotiator.c
fetch-negotiator.h
fetch-object.c
fetch-object.h
fetch-pack.c Merge branch 'ab/fsck-transfer-updates' 2018-08-17 13:09:54 -07:00
fetch-pack.h
fmt-merge-msg.h
fsck.c
fsck.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
fsmonitor.c
fsmonitor.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
generate-cmdlist.sh
gettext.c
gettext.h
git-add--interactive.perl
git-archimport.perl
git-bisect.sh
git-compat-util.h Merge branch 'js/typofixes' 2018-08-20 11:33:50 -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
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 Merge branch 'sb/pull-rebase-submodule' 2018-08-20 11:33:54 -07:00
git-svn.perl
GIT-VERSION-GEN Git 2.19-rc0 2018-08-20 12:53:58 -07:00
git-web--browse.sh
git.c Merge branch 'js/range-diff' 2018-08-20 11:33:53 -07:00
git.rc
gpg-interface.c Merge branch 'jc/gpg-status' 2018-08-20 11:33:50 -07:00
gpg-interface.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
graph.c
graph.h
grep.c
grep.h
hash.h
hashmap.c
hashmap.h
help.c Merge branch 'hn/highlight-sideband-keywords' 2018-08-20 12:41:34 -07:00
help.h
hex.c
http-backend.c Merge branch 'mk/http-backend-content-length' 2018-08-17 13:09:57 -07:00
http-fetch.c
http-push.c
http-walker.c
http.c
http.h
ident.c
imap-send.c
INSTALL
iterator.h
json-writer.c
json-writer.h
khash.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
kwset.c
kwset.h
levenshtein.c
levenshtein.h
LGPL-2.1
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
list-objects-filter.c
list-objects-filter.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
list-objects.c
list-objects.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
list.h
ll-merge.c attr: remove an implicit dependency on the_index 2018-08-13 14:14:42 -07:00
ll-merge.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
lockfile.c
lockfile.h
log-tree.c Merge branch 'jk/core-use-replace-refs' 2018-08-15 15:08:23 -07:00
log-tree.h
ls-refs.c
ls-refs.h
mailinfo.c
mailinfo.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
mailmap.c
mailmap.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
Makefile Merge branch 'js/range-diff' 2018-08-20 11:33:53 -07:00
match-trees.c Merge branch 'jk/merge-subtree-heuristics' 2018-08-17 13:09:55 -07:00
mem-pool.c
mem-pool.h
merge-blobs.c
merge-blobs.h
merge-recursive.c Merge branch 'nd/no-the-index' 2018-08-20 11:33:53 -07:00
merge-recursive.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
merge.c
mergesort.c
mergesort.h
name-hash.c
notes-cache.c
notes-cache.h
notes-merge.c
notes-merge.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
notes-utils.c
notes-utils.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
notes.c
notes.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
object-store.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
object.c Merge branch 'nd/i18n' 2018-08-15 15:08:23 -07:00
object.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
oidmap.c
oidmap.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
oidset.c
oidset.h
pack-bitmap-write.c
pack-bitmap.c pack-bitmap: save "have" bitmap from walk 2018-08-21 12:33:39 -07:00
pack-bitmap.h pack-bitmap: save "have" bitmap from walk 2018-08-21 12:33:39 -07:00
pack-check.c
pack-objects.c
pack-objects.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
pack-revindex.c
pack-revindex.h
pack-write.c
pack.h
packfile.c for_each_packed_object: support iterating in pack-order 2018-08-13 13:48:28 -07:00
packfile.h Merge branch 'jk/for-each-object-iteration' 2018-08-20 11:33:52 -07:00
pager.c
parse-options-cb.c
parse-options.c Merge branch 'rs/parse-opt-lithelp' 2018-08-17 13:09:56 -07:00
parse-options.h
patch-delta.c
patch-ids.c
patch-ids.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
path.c
path.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
pathspec.c pathspec.c: use the right index instead of the_index 2018-08-13 14:14:43 -07:00
pathspec.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
pkt-line.c
pkt-line.h
preload-index.c preload-index.c: use the right index instead of the_index 2018-08-13 14:14:42 -07:00
pretty.c Merge branch 'jk/size-t' 2018-08-15 15:08:25 -07:00
pretty.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
prio-queue.c
prio-queue.h
progress.c
progress.h
prompt.c
prompt.h
protocol.c
protocol.h
quote.c
quote.h
range-diff.c
range-diff.h
reachable.c
reachable.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
read-cache.c Merge branch 'nd/no-the-index' 2018-08-20 11:33:53 -07:00
README.md
ref-filter.c Merge branch 'ot/ref-filter-object-info' 2018-08-17 13:09:57 -07:00
ref-filter.h
reflog-walk.c Merge branch 'nd/i18n' 2018-08-15 15:08:23 -07:00
reflog-walk.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
refs.c Merge branch 'jt/refspec-dwim-precedence-fix' 2018-08-17 13:09:55 -07:00
refs.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
refspec.c
refspec.h
RelNotes
remote-curl.c Merge branch 'js/typofixes' 2018-08-20 11:33:50 -07:00
remote-testsvn.c
remote.c Merge branch 'jt/refspec-dwim-precedence-fix' 2018-08-17 13:09:55 -07:00
remote.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
replace-object.c Merge branch 'nd/i18n' 2018-08-15 15:08:23 -07:00
replace-object.h
repository.c
repository.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
rerere.c dir.c: remove an implicit dependency on the_index in pathspec code 2018-08-13 14:14:42 -07:00
rerere.h
resolve-undo.c resolve-undo.c: use the right index instead of the_index 2018-08-13 14:14:44 -07:00
resolve-undo.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
revision.c dir.c: remove an implicit dependency on the_index in pathspec code 2018-08-13 14:14:42 -07:00
revision.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
run-command.c
run-command.h
send-pack.c
send-pack.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
sequencer.c Merge branch 'pw/rebase-i-merge-segv-fix' 2018-08-20 12:41:33 -07:00
sequencer.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
serve.c
serve.h
server-info.c
setup.c
sh-i18n--envsubst.c
sha1-array.c
sha1-array.h
sha1-file.c Merge branch 'nd/no-the-index' 2018-08-20 11:33:53 -07:00
sha1-lookup.c
sha1-lookup.h
sha1-name.c
sha1dc_git.c
sha1dc_git.h
shallow.c
shell.c
shortlog.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
sideband.c sideband: do not read beyond the end of input 2018-08-18 09:16:48 -07:00
sideband.h
sigchain.c
sigchain.h
split-index.c
split-index.h
strbuf.c Merge branch 'jk/size-t' 2018-08-15 15:08:25 -07:00
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 submodule.c: use the right index instead of the_index 2018-08-13 14:14:43 -07:00
submodule.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
symlinks.c
tag.c
tag.h
tar.h
tempfile.c
tempfile.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
thread-utils.c
thread-utils.h
tmp-objdir.c
tmp-objdir.h
trace.c
trace.h
trailer.c
trailer.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
transport-helper.c Merge branch 'jt/connectivity-check-after-unshallow' 2018-08-15 15:08:28 -07:00
transport-internal.h
transport.c Merge branch 'jt/connectivity-check-after-unshallow' 2018-08-15 15:08:28 -07:00
transport.h Merge branch 'jt/connectivity-check-after-unshallow' 2018-08-15 15:08:28 -07:00
tree-diff.c
tree-walk.c
tree-walk.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
tree.c
tree.h
unicode-width.h
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c attr: remove index from git_attr_set_direction() 2018-08-13 14:14:43 -07:00
unpack-trees.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
upload-pack.c
upload-pack.h
url.c
url.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
urlmatch.c
urlmatch.h urlmatch.h: fix include guard 2018-08-15 11:52:09 -07:00
usage.c
userdiff.c attr: remove an implicit dependency on the_index 2018-08-13 14:14:42 -07:00
userdiff.h
utf8.c Merge branch 'jk/size-t' 2018-08-15 15:08:25 -07:00
utf8.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
varint.c
varint.h
version.c
version.h
versioncmp.c
walker.c
walker.h
wildmatch.c
wildmatch.h
worktree.c
worktree.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
wrap-for-bin.sh
wrapper.c
write-or-die.c
ws.c attr: remove an implicit dependency on the_index 2018-08-13 14:14:42 -07:00
wt-status.c dir.c: remove an implicit dependency on the_index in pathspec code 2018-08-13 14:14:42 -07:00
wt-status.h
xdiff-interface.c
xdiff-interface.h
zlib.c

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.

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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.
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  • "goddamn idiotic truckload of sh*t": when it breaks