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Michael Haggerty 4c4de89573 do_for_each_ref(): reimplement using reference iteration 
Use the reference iterator interface to implement do_for_each_ref().
Delete a bunch of code supporting the old for_each_ref() implementation.
And now that do_for_each_ref() is generic code (it is no longer tied to
the files backend), move it to refs.c.

The implementation is via a new function, do_for_each_ref_iterator(),
which takes a reference iterator as argument and calls a callback
function for each of the references in the iterator.

This change requires the current_ref performance hack for peel_ref() to
be implemented via ref_iterator_peel() rather than peel_entry() because
we don't have a ref_entry handy (it is hidden under three layers:
file_ref_iterator, merge_ref_iterator, and cache_ref_iterator). So:

* do_for_each_ref_iterator() records the active iterator in
  current_ref_iter while it is running.

* peel_ref() checks whether current_ref_iter is pointing at the
  requested reference. If so, it asks the iterator to peel the
  reference (which it can do efficiently via its "peel" virtual
  function). For extra safety, we do the optimization only if the
  refname *addresses* are the same, not only if the refname *strings*
  are the same, to forestall possible mixups between refnames that come
  from different ref_iterators.

Please note that this optimization of peel_ref() is only available when
iterating via do_for_each_ref_iterator() (including all of the
for_each_ref() functions, which call it indirectly). It would be
complicated to implement a similar optimization when iterating directly
using a reference iterator, because multiple reference iterators can be
in use at the same time, with interleaved calls to
ref_iterator_advance(). (In fact we do exactly that in
merge_ref_iterator.)

But that is not necessary. peel_ref() is only called while iterating
over references. Callers who iterate using the for_each_ref() functions
benefit from the optimization described above. Callers who iterate using
reference iterators directly have access to the ref_iterator, so they
can call ref_iterator_peel() themselves to get an analogous optimization
in a more straightforward manner.

If we rewrite all callers to use the reference iteration API, then we
can remove the current_ref_iter hack permanently.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-20 11:38:20 -07:00
block-sha1 sha1: provide another level of indirection for the SHA-1 functions 2015-11-05 10:35:11 -08:00
builtin remote rm: handle symbolic refs correctly 2016-06-20 11:38:18 -07:00
compat Merge branch 'ky/imap-send-openssl-1.1.0' 2016-04-22 15:45:08 -07:00
contrib Merge branch 'mg/complete-cherry-mark-to-log' 2016-04-13 14:12:40 -07:00
Documentation Seventh batch for post 2.8 cycle 2016-04-25 15:18:35 -07:00
ewah ewah: convert to REALLOC_ARRAY, etc 2016-02-22 14:51:09 -08:00
git-gui git-gui/po/glossary/txt-to-pot.sh: use the $( ... ) construct for command substitution 2015-12-27 15:33:13 -08:00
gitk-git Merge branch 'master' of git://ozlabs.org/~paulus/gitk 2016-03-20 18:05:10 -07:00
gitweb gitweb: squelch "uninitialized value" warning 2016-01-12 13:21:15 -08:00
mergetools mergetools: add support for ExamDiff 2016-04-04 09:15:14 -07:00
perl git-svn: shorten glob error message 2016-03-15 01:35:39 +00:00
po l10n-2.8.0-rnd3-fr 2016-04-25 13:36:26 -07:00
ppc sha1: provide another level of indirection for the SHA-1 functions 2015-11-05 10:35:11 -08:00
refs do_for_each_ref(): reimplement using reference iteration 2016-06-20 11:38:20 -07:00
t refs: resolve symbolic refs first 2016-06-13 11:23:50 +02:00
templates Merge branch 'ma/update-hooks-sample-typofix' into maint 2016-03-10 11:13:50 -08:00
vcs-svn
xdiff Merge branch 'rj/xdiff-prepare-plug-leak-on-error-codepath' into maint 2016-04-14 18:57:46 -07:00
.gitattributes
.gitignore gitignore: ignore generated test-fake-ssh executable 2016-02-08 12:18:51 -08:00
.mailmap mailmap: update my entry with new email address 2015-09-16 09:08:48 -07:00
.travis.yml add DEVELOPER makefile knob to check for acknowledged warnings 2016-02-25 12:49:45 -08:00
abspath.c Windows: shorten code by re-using convert_slashes() 2016-04-04 18:03:02 -07:00
aclocal.m4
advice.c merge: grammofix in please-commit-before-merge message 2015-10-02 14:29:56 -07:00
advice.h pull: check if in unresolved merge state 2015-06-18 13:17:16 -07:00
alias.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
alloc.c
archive-tar.c archive-tar: use xsnprintf for trivial formatting 2015-09-25 10:18:18 -07:00
archive-zip.c Merge branch 'rs/archive-zip-many' into maint 2015-09-03 19:18:01 -07:00
archive.c use st_add and st_mult for allocation size computation 2016-02-22 14:51:09 -08:00
archive.h
argv-array.c argv-array: add detach function 2016-02-22 14:50:32 -08:00
argv-array.h argv-array: add detach function 2016-02-22 14:50:32 -08:00
attr.c Merge branch 'ss/exc-flag-is-a-collection-of-bits' into maint 2016-04-14 18:37:15 -07:00
attr.h
base85.c
bisect.c Merge branch 'jk/tighten-alloc' 2016-02-26 13:37:16 -08:00
bisect.h bisect: simplify the addition of new bisect terms 2015-08-03 11:42:41 -07:00
blob.c
blob.h
branch.c branch -m: update all per-worktree HEADs 2016-04-04 12:57:22 -07:00
branch.h branch -m: update all per-worktree HEADs 2016-04-04 12:57:22 -07:00
builtin.h Merge branch 'sb/submodule-helper' 2015-10-05 12:30:19 -07:00
bulk-checkin.c use xsnprintf for generating git object headers 2015-09-25 10:18:18 -07:00
bulk-checkin.h
bundle.c bundle: don't leak an fd in case of early return 2016-04-01 10:33:18 -07:00
bundle.h
cache-tree.c Merge branch 'jk/tighten-alloc' into maint 2016-03-10 11:13:43 -08:00
cache-tree.h cache-tree: introduce write_index_as_tree() 2015-08-04 22:02:11 -07:00
cache.h safe_create_leading_directories(): improve docstring 2016-05-05 16:37:30 +02:00
check_bindir
check-builtins.sh
check-racy.c
color.c color: add color_set helper for copying raw colors 2015-10-05 11:08:05 -07:00
color.h color: add color_set helper for copying raw colors 2015-10-05 11:08:05 -07:00
column.c use xmallocz to avoid size arithmetic 2016-02-22 14:51:09 -08:00
column.h
combine-diff.c use st_add and st_mult for allocation size computation 2016-02-22 14:51:09 -08:00
command-list.txt Merge branch 'nd/multiple-work-trees' 2015-07-13 14:02:02 -07:00
commit-slab.h Merge branch 'jc/commit-slab' 2015-08-03 11:01:21 -07:00
commit.c use st_add and st_mult for allocation size computation 2016-02-22 14:51:09 -08:00
commit.h pretty: allow tweaking tabwidth in --expand-tabs 2016-03-30 12:52:26 -07:00
config.c Merge branch 'jk/do-not-printf-NULL' 2016-04-22 15:45:09 -07:00
config.mak.in
config.mak.uname Merge branch 'ad/cygwin-wants-rename' 2016-04-22 15:45:10 -07:00
configure.ac Merge branch 'ky/imap-send-openssl-1.1.0' 2016-04-22 15:45:08 -07:00
connect.c Merge branch 'cn/deprecate-ssh-git-url' 2016-03-16 13:16:40 -07:00
connect.h connect & http: support -4 and -6 switches for remote operations 2016-02-12 11:34:14 -08:00
connected.c
connected.h connected.c: add new variant that runs with --shallow-file 2013-12-10 16:14:18 -08:00
convert.c Merge branch 'tb/conversion' 2016-02-26 13:37:23 -08:00
convert.h ls-files: add eol diagnostics 2016-01-18 19:48:43 -08:00
copy.c copy.c: make copy_fd() report its status silently 2015-05-19 14:48:54 -07:00
COPYING
credential-cache--daemon.c Merge branch 'jk/credential-cache-comment-exit' into maint 2016-04-14 18:37:16 -07:00
credential-cache.c credential-cache, send_request: close fd when done 2016-04-01 10:33:18 -07:00
credential-store.c strbuf: introduce strbuf_getline_{lf,nul}() 2016-01-15 10:12:51 -08:00
credential.c credential: let empty credential specs reset helper list 2016-02-26 10:58:14 -08:00
credential.h
csum-file.c
csum-file.h
ctype.c
daemon.c Merge branch 'jk/tighten-alloc' 2016-02-26 13:37:16 -08:00
date.c date: make "local" orthogonal to date format 2015-09-03 15:45:26 -07:00
decorate.c Remove get_object_hash. 2015-11-20 08:02:05 -05:00
decorate.h
delta.h
diff-delta.c
diff-lib.c Remove get_object_hash. 2015-11-20 08:02:05 -05:00
diff-no-index.c Merge branch 'nd/diff-with-path-params' into maint 2016-02-05 14:54:15 -08:00
diff.c Merge branch 'mm/diff-renames-default' 2016-04-03 10:29:22 -07:00
diff.h Merge branch 'mm/diff-renames-default' 2016-04-03 10:29:22 -07:00
diffcore-break.c
diffcore-delta.c use st_add and st_mult for allocation size computation 2016-02-22 14:51:09 -08:00
diffcore-order.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
diffcore-pickaxe.c react to errors in xdi_diff 2015-09-28 14:57:10 -07:00
diffcore-rename.c Merge branch 'sg/diff-multiple-identical-renames' 2016-04-13 14:12:32 -07:00
diffcore.h
dir.c Merge branch 'ss/exc-flag-is-a-collection-of-bits' into maint 2016-04-14 18:37:15 -07:00
dir.h remove_dir_recursively(): add docstring 2016-05-05 16:37:30 +02:00
editor.c
entry.c use xmallocz to avoid size arithmetic 2016-02-22 14:51:09 -08:00
environment.c Merge branch 'jk/check-repository-format' 2016-04-13 14:12:28 -07:00
exec_cmd.c Merge branch 'ak/extract-argv0-last-dir-sep' into maint 2016-03-10 11:13:47 -08:00
exec_cmd.h prepare_{git,shell}_cmd: use argv_array 2016-02-22 14:51:09 -08:00
fast-import.c Merge branch 'jk/tighten-alloc' 2016-02-26 13:37:16 -08:00
fetch-pack.c fetch-pack: ignore SIGPIPE in sideband demuxer 2016-02-25 13:51:47 -08:00
fetch-pack.h
fmt-merge-msg.h
fsck.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
fsck.h fsck: git receive-pack: support excluding objects from fsck'ing 2015-06-23 14:27:37 -07:00
generate-cmdlist.sh generate-cmdlist: re-implement as shell script 2015-08-25 11:24:31 -07:00
gettext.c introduce "format" date-mode 2015-06-29 11:39:10 -07:00
gettext.h
git-add--interactive.perl add--interactive: allow custom diff highlighting programs 2016-02-28 10:53:54 -08:00
git-archimport.perl
git-bisect.sh bisect: allow setting any user-specified in 'git bisect start' 2015-08-03 11:42:43 -07:00
git-compat-util.h Merge branch 'ky/imap-send-openssl-1.1.0' 2016-04-22 15:45:08 -07:00
git-cvsexportcommit.perl
git-cvsimport.perl Merge branch 'cn/cvsimport-perl-update' 2015-06-25 11:08:08 -07:00
git-cvsserver.perl git-cvsserver.perl: fix typo 2016-02-17 10:00:53 -08:00
git-difftool--helper.sh
git-difftool.perl difftool: ignore symbolic links in use_wt_file 2015-10-29 13:43:10 -07:00
git-filter-branch.sh Merge branch 'jk/filter-branch-no-index' into maint 2016-02-05 14:54:13 -08:00
git-instaweb.sh
git-merge-octopus.sh merge-octopus: abort if index does not match HEAD 2016-04-12 18:39:43 -07:00
git-merge-one-file.sh Merge branch 'jk/no-diff-emit-common' into maint 2016-03-10 11:13:42 -08:00
git-merge-resolve.sh
git-mergetool--lib.sh mergetools: create mergetool_find_win32_cmd() helper function for winmerge 2016-04-04 09:15:00 -07:00
git-mergetool.sh mergetool: honor tempfile configuration when resolving delete conflicts 2016-03-10 14:07:57 -08:00
git-p4.py Merge branch 'ls/p4-map-user' 2016-04-06 11:39:05 -07:00
git-parse-remote.sh
git-quiltimport.sh git-quiltimport: add commandline option --series <file> 2015-09-01 11:10:07 -07:00
git-rebase--am.sh rebase: return non-zero error code if format-patch fails 2015-07-08 15:36:42 -07:00
git-rebase--interactive.sh Merge branch 'rt/rebase-i-shorten-stop-report' 2016-04-13 14:12:30 -07:00
git-rebase--merge.sh
git-rebase.sh rebase: decouple --exec from --interactive 2016-03-18 14:35:31 -07:00
git-relink.perl git-relink: use a lowercase "usage:" string 2013-02-24 13:31:06 -08:00
git-remote-testgit.sh transport-helper: do not request symbolic refs to remote helpers 2015-01-21 22:46:59 -08:00
git-request-pull.sh
git-send-email.perl Merge branch 'ew/send-email-drop-data-dumper' 2016-04-22 15:45:06 -07:00
git-sh-i18n.sh
git-sh-setup.sh sane_grep: pass "-a" if grep accepts it 2016-03-10 15:35:43 -08:00
git-stash.sh Merge branch 'nk/stash-show-config' 2015-10-05 12:30:10 -07:00
git-submodule.sh Merge branch 'sb/submodule-path-misc-bugs' 2016-04-25 15:17:16 -07:00
git-svn.perl git-svn: fix URL canonicalization during init w/ SVN 1.7+ 2016-03-16 20:16:23 +00:00
GIT-VERSION-GEN First batch for post 2.8 cycle 2016-04-03 10:55:36 -07:00
git-web--browse.sh
git.c Merge branch 'ak/git-strip-extension-from-dashed-command' into maint 2016-03-10 11:13:48 -08:00
git.rc
git.spec.in git.spec.in: use README.md, not README 2016-04-03 10:12:48 -07:00
gpg-interface.c verify-commit: add option to print raw gpg status information 2015-06-22 14:20:47 -07:00
gpg-interface.h verify-commit: add option to print raw gpg status information 2015-06-22 14:20:47 -07:00
graph.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
graph.h
grep.c use xmallocz to avoid size arithmetic 2016-02-22 14:51:09 -08:00
grep.h
hashmap.c convert trivial cases to FLEX_ARRAY macros 2016-02-22 14:51:09 -08:00
hashmap.h
help.c convert trivial cases to FLEX_ARRAY macros 2016-02-22 14:51:09 -08:00
help.h
hex.c add reentrant variants of sha1_to_hex and find_unique_abbrev 2015-09-25 10:18:18 -07:00
http-backend.c show_head_ref(): check the result of resolve_ref_namespace() 2016-04-10 11:35:39 -07:00
http-fetch.c
http-push.c Merge branch 'jk/path-name-safety-2.6' into jk/path-name-safety-2.7 2016-03-16 10:42:32 -07:00
http-walker.c http-walker: store url in a strbuf 2015-09-25 10:18:18 -07:00
http.c Merge branch 'jc/http-socks5h' 2016-04-22 15:45:09 -07:00
http.h Merge branch 'ew/force-ipv4' 2016-02-24 13:25:54 -08:00
ident.c Merge branch 'da/user-useconfigonly' 2016-02-17 10:13:31 -08:00
imap-send.c Merge branch 'ky/imap-send-openssl-1.1.0' 2016-04-22 15:45:08 -07:00
INSTALL
iterator.h refs: introduce an iterator interface 2016-06-20 11:38:20 -07:00
khash.h convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
kwset.c
kwset.h
levenshtein.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
levenshtein.h
LGPL-2.1
line-log.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
line-log.h
line-range.c
line-range.h
list-objects.c Merge branch 'jk/path-name-safety-2.6' into jk/path-name-safety-2.7 2016-03-16 10:42:32 -07:00
list-objects.h list-objects: pass full pathname to callbacks 2016-03-16 10:41:04 -07:00
ll-merge.c use xmallocz to avoid size arithmetic 2016-02-22 14:51:09 -08:00
ll-merge.h
lockfile.c lockfile: improve error message when lockfile exists 2016-03-01 10:16:46 -08:00
lockfile.h lockfile: remove function "hold_lock_file_for_append" 2015-08-28 11:32:01 -07:00
log-tree.c pretty: expand tabs in indented logs to make things line up properly 2016-03-30 11:25:35 -07:00
log-tree.h
mailinfo.c strbuf: introduce strbuf_getline_{lf,nul}() 2016-01-15 10:12:51 -08:00
mailinfo.h mailinfo: remove calls to exit() and die() deep in the callchain 2015-10-21 15:59:34 -07:00
mailmap.c mailmap: do not resolve blobs in a non-repository 2016-03-06 17:19:11 -08:00
mailmap.h
Makefile refs: introduce an iterator interface 2016-06-20 11:38:20 -07:00
match-trees.c
merge-blobs.c Merge branch 'jk/no-diff-emit-common' into maint 2016-03-10 11:13:42 -08:00
merge-blobs.h
merge-recursive.c merge-recursive: find-renames resets threshold 2016-02-24 10:39:02 -08:00
merge-recursive.h merge-recursive: option to disable renames 2016-02-17 10:20:51 -08:00
merge.c Convert struct object to object_id 2015-11-20 08:02:05 -05:00
mergesort.c
mergesort.h
name-hash.c convert trivial cases to FLEX_ARRAY macros 2016-02-22 14:51:09 -08:00
notes-cache.c notes: allow treeish expressions as notes ref 2016-01-12 15:10:01 -08:00
notes-cache.h
notes-merge.c Remove get_object_hash. 2015-11-20 08:02:05 -05:00
notes-merge.h notes: extract enum notes_merge_strategy to notes-utils.h 2015-08-17 15:36:23 -07:00
notes-utils.c notes: allow treeish expressions as notes ref 2016-01-12 15:10:01 -08:00
notes-utils.h notes: extract parse_notes_merge_strategy to notes-utils 2015-08-17 15:38:32 -07:00
notes.c Merge branch 'jk/tighten-alloc' 2016-02-26 13:37:16 -08:00
notes.h Merge branch 'jk/notes-merge-from-anywhere' 2016-02-03 14:15:59 -08:00
object.c Remove get_object_hash. 2015-11-20 08:02:05 -05:00
object.h Remove get_object_hash. 2015-11-20 08:02:05 -05:00
pack-bitmap-write.c Merge branch 'jk/path-name-safety-2.6' into jk/path-name-safety-2.7 2016-03-16 10:42:32 -07:00
pack-bitmap.c Merge branch 'jk/path-name-safety-2.6' into jk/path-name-safety-2.7 2016-03-16 10:42:32 -07:00
pack-bitmap.h
pack-check.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
pack-objects.c use REALLOC_ARRAY for changing the allocation size of arrays 2014-09-18 09:13:42 -07:00
pack-objects.h
pack-revindex.c Merge branch 'jk/tighten-alloc' 2016-02-26 13:37:16 -08:00
pack-revindex.h pack-revindex: store entries directly in packed_git 2015-12-21 14:36:28 -08:00
pack-write.c
pack.h
pager.c Merge branch 'jc/am-i-v-fix' into maint 2016-03-10 11:13:41 -08:00
parse-options-cb.c Merge branch 'kn/for-each-tag-branch' 2015-10-05 12:30:03 -07:00
parse-options.c parse-options: allow -h as a short option 2015-11-20 08:02:07 -05:00
parse-options.h parse-options: allow -h as a short option 2015-11-20 08:02:07 -05:00
patch-delta.c
patch-ids.c Remove get_object_hash. 2015-11-20 08:02:05 -05:00
patch-ids.h
path.c Merge branch 'jk/check-repository-format' 2016-04-13 14:12:28 -07:00
pathspec.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
pathspec.h
pkt-line.c pkt-line: show packets in async processes as "sideband" 2015-09-01 15:11:57 -07:00
pkt-line.h
preload-index.c
pretty.c pretty: allow tweaking tabwidth in --expand-tabs 2016-03-30 12:52:26 -07:00
prio-queue.c
prio-queue.h
progress.c use xmallocz to avoid size arithmetic 2016-02-22 14:51:09 -08:00
progress.h
prompt.c
prompt.h
quote.c quote: implement sq_quotef() 2016-03-01 12:24:15 -08:00
quote.h quote: implement sq_quotef() 2016-03-01 12:24:15 -08:00
reachable.c Merge branch 'maint-2.5' into maint-2.6 2016-03-17 11:26:18 -07:00
reachable.h pack-objects: match prune logic for discarding objects 2014-10-16 10:10:43 -07:00
read-cache.c Merge branch 'nd/ita-cleanup' into maint 2016-02-22 13:10:21 -08:00
README.md README.md: don't take 'commandname' literally 2016-04-03 10:12:48 -07:00
ref-filter.c ref-filter.c: mark strings for translation 2016-02-29 14:27:58 -08:00
ref-filter.h branch.c: use 'ref-filter' APIs 2015-09-25 08:54:54 -07:00
reflog-walk.c Merge branch 'dk/reflog-walk-with-non-commit' into maint 2016-02-05 14:54:10 -08:00
reflog-walk.h convert "enum date_mode" into a struct 2015-06-29 11:39:07 -07:00
refs.c do_for_each_ref(): reimplement using reference iteration 2016-06-20 11:38:20 -07:00
refs.h refs: introduce an iterator interface 2016-06-20 11:38:20 -07:00
RelNotes Second batch for post 2.8 cycle 2016-04-06 11:44:24 -07:00
remote-curl.c Merge branch 'jk/tighten-alloc' into maint 2016-03-10 11:13:43 -08:00
remote-testsvn.c strbuf: introduce strbuf_getline_{lf,nul}() 2016-01-15 10:12:51 -08:00
remote.c Merge branch 'jk/tighten-alloc' into maint 2016-03-10 11:13:43 -08:00
remote.h remote: simplify remote_is_configured() 2016-02-16 13:33:12 -08:00
replace_object.c register_replace_ref(): rewrite to take an object_id argument 2015-05-25 12:19:35 -07:00
rerere.c Merge branch 'jc/rerere-multi' 2016-04-25 15:17:15 -07:00
rerere.h Merge branch 'jc/rerere-multi' 2016-04-25 15:17:15 -07:00
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'lt/pretty-expand-tabs' 2016-04-13 14:12:36 -07:00
revision.h Merge branch 'lt/pretty-expand-tabs' 2016-04-13 14:12:36 -07:00
run-command.c Merge branch 'sb/submodule-parallel-update' 2016-04-06 11:39:01 -07:00
run-command.h Merge branch 'sb/submodule-parallel-update' 2016-04-06 11:39:01 -07:00
send-pack.c Convert struct ref to use object_id. 2015-11-20 08:02:05 -05:00
send-pack.h push: support signing pushes iff the server supports it 2015-08-19 12:58:45 -07:00
sequencer.c Merge branch 'jk/tighten-alloc' 2016-02-26 13:37:16 -08:00
sequencer.h
server-info.c Convert struct object to object_id 2015-11-20 08:02:05 -05:00
setup.c Merge branch 'jc/xstrfmt-null-with-prec-0' 2016-04-22 15:45:08 -07:00
sh-i18n--envsubst.c
sha1_file.c Merge branch 'jk/pack-idx-corruption-safety' into maint 2016-03-10 11:13:46 -08:00
sha1_name.c Merge branch 'jk/tighten-alloc' into maint 2016-03-10 11:13:43 -08:00
sha1-array.c
sha1-array.h
sha1-lookup.c
sha1-lookup.h
shallow.c use st_add and st_mult for allocation size computation 2016-02-22 14:51:09 -08:00
shell.c strbuf: introduce strbuf_getline_{lf,nul}() 2016-01-15 10:12:51 -08:00
shortlog.h
show-index.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
sideband.c convert trivial sprintf / strcpy calls to xsnprintf 2015-09-25 10:18:18 -07:00
sideband.h
sigchain.c sigchain: add command to pop all common signals 2015-12-16 12:06:08 -08:00
sigchain.h sigchain: add command to pop all common signals 2015-12-16 12:06:08 -08:00
split-index.c
split-index.h split-index: the reading part 2014-06-13 11:49:40 -07:00
strbuf.c Merge branch 'jk/getwholeline-getdelim-empty' into maint 2016-04-14 18:57:46 -07:00
strbuf.h Merge branch 'sb/submodule-parallel-update' 2016-04-06 11:39:01 -07:00
streaming.c
streaming.h
string-list.c
string-list.h
submodule-config.c Merge branch 'ak/use-hashmap-iter-first-in-submodule-config' 2016-04-13 14:12:29 -07:00
submodule-config.h Merge branch 'sb/submodule-parallel-update' 2016-04-06 11:39:01 -07:00
submodule.c Merge branch 'sb/submodule-parallel-update' 2016-04-06 11:39:01 -07:00
submodule.h Merge branch 'sb/submodule-parallel-update' 2016-04-06 11:39:01 -07:00
symlinks.c
tag.c Remove get_object_hash. 2015-11-20 08:02:05 -05:00
tag.h
tar.h
tempfile.c register_tempfile(): new function to handle an existing temporary file 2015-08-10 12:57:14 -07:00
tempfile.h register_tempfile(): new function to handle an existing temporary file 2015-08-10 12:57:14 -07:00
test-chmtime.c
test-config.c
test-ctype.c
test-date.c convert "enum date_mode" into a struct 2015-06-29 11:39:07 -07:00
test-delta.c tests: use a lowercase "usage:" string 2013-02-24 21:30:10 -08:00
test-dump-cache-tree.c test-dump-cache-tree: avoid overflow of cache-tree name 2015-09-25 10:18:18 -07:00
test-dump-split-index.c commit: don't rewrite shared index unnecessarily 2015-08-31 08:41:07 -07:00
test-dump-untracked-cache.c test-dump-untracked-cache: don't modify the untracked cache 2016-01-27 12:30:07 -08:00
test-fake-ssh.c mingw: fix t5601-clone.sh 2016-01-27 14:27:19 -08:00
test-genrandom.c
test-hashmap.c Merge branch 'js/test-hashmap-squelch-gcc' 2014-12-22 12:27:46 -08:00
test-index-version.c
test-line-buffer.c
test-match-trees.c use setup_git_directory() in test-* programs 2016-03-07 12:27:35 -08:00
test-mergesort.c
test-mktemp.c
test-parse-options.c parse-options: move unsigned long option parsing out of pack-objects.c 2015-06-22 15:07:21 -07:00
test-path-utils.c Merge branch 'jk/tighten-alloc' 2016-02-26 13:37:16 -08:00
test-prio-queue.c
test-read-cache.c
test-regex.c
test-revision-walking.c use setup_git_directory() in test-* programs 2016-03-07 12:27:35 -08:00
test-run-command.c run-command: do not pass child process data into callbacks 2016-03-01 09:42:01 -08:00
test-scrap-cache-tree.c
test-sha1-array.c test-sha1-array: read command stream with strbuf_getline() 2016-01-15 10:35:08 -08:00
test-sha1.c
test-sha1.sh test-sha1.sh: use the $( ... ) construct for command substitution 2015-12-27 15:33:13 -08:00
test-sigchain.c
test-string-list.c
test-submodule-config.c submodule: use new config API for worktree configurations 2015-08-19 11:43:10 -07:00
test-subprocess.c
test-svn-fe.c
test-urlmatch-normalization.c
test-wildmatch.c
thread-utils.c
thread-utils.h
trace.c trace: use strbuf for quote_crnl output 2015-09-25 10:18:18 -07:00
trace.h pkt-line: support tracing verbatim pack contents 2015-06-16 13:24:22 -07:00
trailer.c trailer.c: mark strings for translation 2016-02-29 14:27:58 -08:00
trailer.h interpret-trailers: add option for in-place editing 2016-01-14 12:22:17 -08:00
transport-helper.c Merge branch 'ew/force-ipv4' 2016-02-24 13:25:54 -08:00
transport.c Merge branch 'cn/deprecate-ssh-git-url' 2016-03-16 13:16:40 -07:00
transport.h connect & http: support -4 and -6 switches for remote operations 2016-02-12 11:34:14 -08:00
tree-diff.c Merge branch 'maint-2.4' into maint-2.5 2016-03-17 11:24:14 -07:00
tree-walk.c do_compare_entry: use already-computed path 2016-01-05 13:39:46 -08:00
tree-walk.h do_compare_entry: use already-computed path 2016-01-05 13:39:46 -08:00
tree.c Remove get_object_hash. 2015-11-20 08:02:05 -05:00
tree.h Merge branch 'jk/squelch-missing-link-warning-for-unreachable' into maint 2015-06-25 11:02:10 -07:00
unicode_width.h
unimplemented.sh unimplemented.sh: use the $( ... ) construct for command substitution 2015-12-27 15:33:13 -08:00
unix-socket.c
unix-socket.h
unpack-trees.c unpack-trees: fix accidentally quadratic behavior 2016-01-22 13:03:10 -08:00
unpack-trees.h
update_unicode.sh
upload-pack.c upload-pack: use argv_array for pack_objects 2016-02-25 14:20:25 -08:00
url.c use strbuf_complete to conditionally append slash 2015-10-05 11:08:06 -07:00
url.h
urlmatch.c
urlmatch.h
usage.c vreportf: avoid intermediate buffer 2015-08-11 14:29:36 -07:00
userdiff.c userdiff: add support for Fountain documents 2015-07-23 14:44:51 -07:00
userdiff.h diff: clarify textconv interface 2016-02-22 10:40:35 -08:00
utf8.c utf8: add function to align a string into given strbuf 2015-09-17 10:02:48 -07:00
utf8.h utf8: add function to align a string into given strbuf 2015-09-17 10:02:48 -07:00
varint.c
varint.h
version.c
version.h
versioncmp.c
walker.c strbuf: introduce strbuf_getline_{lf,nul}() 2016-01-15 10:12:51 -08:00
walker.h
wildmatch.c
wildmatch.h
worktree.c worktree.c: fix indentation 2016-01-19 11:22:29 -08:00
worktree.h worktree: add details to the worktree struct 2015-10-08 11:57:07 -07:00
wrap-for-bin.sh test: facilitate debugging Git executables in tests with gdb 2015-10-30 14:02:38 -07:00
wrapper.c Merge branch 'jk/tighten-alloc' 2016-02-26 13:37:16 -08:00
write_or_die.c write_or_die: handle EPIPE in async threads 2016-02-25 13:51:45 -08:00
ws.c
wt-status.c Merge branch 'sb/misc-cleanups' 2016-04-13 14:12:34 -07:00
wt-status.h wt-status: move #include "pathspec.h" to the header 2015-08-21 14:49:27 -07:00
xdiff-interface.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
xdiff-interface.h xdiff: reject files larger than ~1GB 2015-09-28 14:57:23 -07:00
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 http://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 http://news.gmane.org/gmane.comp.version-control.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