The hashfile API uses a hard-coded buffer size of 8KB and has ever since
it was introduced in c38138c (git-pack-objects: write the pack files
with a SHA1 csum, 2005-06-26). It performs a similar function to the
hashing buffers in read-cache.c, but that code was updated from 8KB to
128KB in f279894 (read-cache: make the index write buffer size 128K,
2021-02-18). The justification there was that do_write_index() improves
from 1.02s to 0.72s. Since our end goal is to have the index writing
code use the hashfile API, we need to unify this buffer size to avoid a
performance regression.
There is a buffer, 'check_buffer', that is used to verify the check_fd
file descriptor. When this buffer increases to 128K to fit the data
being flushed, it causes the stack to overflow the limits placed in the
test suite. To avoid issues with stack size, move both 'buffer' and
'check_buffer' to be heap pointers within 'struct hashfile'. The
'check_buffer' member is left as NULL unless check_fd is set in
hashfd_check(). Both buffers are cleared as part of finalize_hashfile()
which also frees the full structure.
Since these buffers are now on the heap, we can adjust their size based
on the needs of the consumer. In particular, callers to
hashfd_throughput() are expecting to report progress indicators as the
buffer flushes. These callers would prefer the smaller 8k buffer to
avoid large delays between updates, especially for users with slower
networks. When the progress indicator is not used, the larger buffer is
preferrable.
By adding a new trace2 region in the chunk-format API, we can see that
the writing portion of 'git multi-pack-index write' lowers from ~1.49s
to ~1.47s on a Linux machine. These effects may be more pronounced or
diminished on other filesystems. The end-to-end timing is too noisy to
have a definitive change either way.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The flush() logic in csum-file.c was introduced originally by c38138c
(git-pack-objects: write the pack files with a SHA1 csum, 2005-06-26)
and a portion of the logic performs similar utility to write_in_full()
in wrapper.c. The history of write_in_full() is full of moves and
renames, but was originally introduced by 7230e6d (Add write_or_die(), a
helper function, 2006-08-21).
The point of these sections of code are to flush a write buffer using
xwrite() and report errors in the case of disk space issues or other
generic input/output errors. The logic in flush() can interpret the
output of write_in_full() to provide the correct error messages to
users.
The logic in the hashfile API has an additional set of logic to augment
the progress indicator between calls to xwrite(). This was introduced by
2a128d6 (add throughput display to git-push, 2007-10-30). It seems that
since the hashfile's buffer is only 8KB, these additional progress
indicators might not be incredibly necessary. Instead, update the
progress only when write_in_full() complete.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The code to handle options recently added to "git stash show"
around untracked part of the stash segfaulted when these options
were used on a stash entry that does not record untracked part.
* dl/stash-show-untracked-fixup:
stash show: fix segfault with --{include,only}-untracked
t3905: correct test title
When "git update-ref -d" removes a ref that is packed, it left
empty directories under $GIT_DIR/refs/ for
* wc/packed-ref-removal-cleanup:
refs: cleanup directories when deleting packed ref
"git mailinfo" (hence "git am") learned the "--quoted-cr" option to
control how lines ending with CRLF wrapped in base64 or qp are
handled.
* dd/mailinfo-quoted-cr:
am: learn to process quoted lines that ends with CRLF
mailinfo: allow stripping quoted CR without warning
mailinfo: allow squelching quoted CRLF warning
mailinfo: warn if CRLF found in decoded base64/QP email
mailinfo: stop parsing options manually
mailinfo: load default metainfo_charset lazily
The final part of "parallel checkout".
* mt/parallel-checkout-part-3:
ci: run test round with parallel-checkout enabled
parallel-checkout: add tests related to .gitattributes
t0028: extract encoding helpers to lib-encoding.sh
parallel-checkout: add tests related to path collisions
parallel-checkout: add tests for basic operations
checkout-index: add parallel checkout support
builtin/checkout.c: complete parallel checkout support
make_transient_cache_entry(): optionally alloc from mem_pool
"git push" learns to discover common ancestor with the receiving
end over protocol v2.
* jt/push-negotiation:
send-pack: support push negotiation
fetch: teach independent negotiation (no packfile)
fetch-pack: refactor command and capability write
fetch-pack: refactor add_haves()
fetch-pack: refactor process_acks()
"git add -i --dry-run" does not dry-run, which was surprising. The
combination of options has taught to error out.
* ow/no-dryrun-in-add-i:
add: die if both --dry-run and --interactive are given
"git p4" learned to find branch points more efficiently.
* jk/p4-locate-branch-point-optim:
git-p4: speed up search for branch parent
git-p4: ensure complex branches are cloned correctly
Over-the-wire protocol learns a new request type to ask for object
sizes given a list of object names.
* ba/object-info:
object-info: support for retrieving object info
The word-diff mode has been taught to work better with a word
regexp that can match an empty string.
* pw/word-diff-zero-width-matches:
word diff: handle zero length matches
When `git stash show --include-untracked` or
`git stash show --only-untracked` is run on a stash that doesn't include
an untracked entry, a segfault occurs. This happens because we do not
check whether the untracked entry is actually present and just attempt
to blindly dereference it.
Ensure that the untracked entry is present before actually attempting to
dereference it.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We reference the non-existent option `git stash show --show-untracked`
when we really meant `--only-untracked`. Correct the test title
accordingly.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fixes two memory leaks when running `git maintenance start` or `git
maintenance stop` in `update_background_schedule`:
$ valgrind --leak-check=full ~/git/bin/git maintenance start
==76584== Memcheck, a memory error detector
==76584== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==76584== Using Valgrind-3.16.1 and LibVEX; rerun with -h for copyright info
==76584== Command: /home/lenaic/git/bin/git maintenance start
==76584==
==76584==
==76584== HEAP SUMMARY:
==76584== in use at exit: 34,880 bytes in 252 blocks
==76584== total heap usage: 820 allocs, 568 frees, 146,414 bytes allocated
==76584==
==76584== 65 bytes in 1 blocks are definitely lost in loss record 17 of 39
==76584== at 0x483E6AF: malloc (vg_replace_malloc.c:306)
==76584== by 0x3DC39C: xrealloc (wrapper.c:126)
==76584== by 0x3992CC: strbuf_grow (strbuf.c:98)
==76584== by 0x39A473: strbuf_vaddf (strbuf.c:392)
==76584== by 0x39BC54: xstrvfmt (strbuf.c:979)
==76584== by 0x39BD2C: xstrfmt (strbuf.c:989)
==76584== by 0x18451B: update_background_schedule (gc.c:1977)
==76584== by 0x1846F6: maintenance_start (gc.c:2011)
==76584== by 0x1847B4: cmd_maintenance (gc.c:2030)
==76584== by 0x127A2E: run_builtin (git.c:453)
==76584== by 0x127E81: handle_builtin (git.c:704)
==76584== by 0x128142: run_argv (git.c:771)
==76584==
==76584== 240 bytes in 1 blocks are definitely lost in loss record 29 of 39
==76584== at 0x4840D7B: realloc (vg_replace_malloc.c:834)
==76584== by 0x491CE5D: getdelim (in /usr/lib/libc-2.33.so)
==76584== by 0x39ADD7: strbuf_getwholeline (strbuf.c:635)
==76584== by 0x39AF31: strbuf_getdelim (strbuf.c:706)
==76584== by 0x39B064: strbuf_getline_lf (strbuf.c:727)
==76584== by 0x184273: crontab_update_schedule (gc.c:1919)
==76584== by 0x184678: update_background_schedule (gc.c:1997)
==76584== by 0x1846F6: maintenance_start (gc.c:2011)
==76584== by 0x1847B4: cmd_maintenance (gc.c:2030)
==76584== by 0x127A2E: run_builtin (git.c:453)
==76584== by 0x127E81: handle_builtin (git.c:704)
==76584== by 0x128142: run_argv (git.c:771)
==76584==
==76584== LEAK SUMMARY:
==76584== definitely lost: 305 bytes in 2 blocks
==76584== indirectly lost: 0 bytes in 0 blocks
==76584== possibly lost: 0 bytes in 0 blocks
==76584== still reachable: 34,575 bytes in 250 blocks
==76584== suppressed: 0 bytes in 0 blocks
==76584== Reachable blocks (those to which a pointer was found) are not shown.
==76584== To see them, rerun with: --leak-check=full --show-leak-kinds=all
==76584==
==76584== For lists of detected and suppressed errors, rerun with: -s
==76584== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)
Signed-off-by: Lénaïc Huard <lenaic@lhuard.fr>
Acked-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The way the command line specified by the trailer.<token>.command
configuration variable receives the end-user supplied value was
both error prone and misleading. An alternative to achieve the
same goal in a safer and more intuitive way has been added, as
the trailer.<token>.cmd configuration variable, to replace it.
* zh/trailer-cmd:
trailer: add new .cmd config option
docs: correct descript of trailer.<token>.command
Various test and documentation updates about .gitsomething paths
that are symlinks.
* jk/symlinked-dotgitx-cleanup:
docs: document symlink restrictions for dot-files
fsck: warn about symlinked dotfiles we'll open with O_NOFOLLOW
t0060: test ntfs/hfs-obscured dotfiles
t7450: test .gitmodules symlink matching against obscured names
t7450: test verify_path() handling of gitmodules
t7415: rename to expand scope
fsck_tree(): wrap some long lines
fsck_tree(): fix shadowed variable
t7415: remove out-dated comment about translation
Options to "git pack-objects" that take numeric values like
--window and --depth should not accept negative values; the input
validation has been tightened.
* jk/pack-objects-negative-options-fix:
pack-objects: clamp negative depth to 0
t5316: check behavior of pack-objects --depth=0
pack-objects: clamp negative window size to 0
t5300: check that we produced expected number of deltas
t5300: modernize basic tests
"git submodule update --quiet" did not propagate the quiet option
down to underlying "git fetch", which has been corrected.
* nc/submodule-update-quiet:
submodule update: silence underlying fetch with "--quiet"
A few variants of informational message "Already up-to-date" has
been rephrased.
* js/merge-already-up-to-date-message-reword:
merge: fix swapped "up to date" message components
merge(s): apply consistent punctuation to "up to date" messages
"git bisect skip" when custom words are used for new/old did not
work, which has been corrected.
* rj/bisect-skip-honor-terms:
bisect--helper: use BISECT_TERMS in 'bisect skip' command
When deleting a packed ref via 'update-ref -d', a lockfile is made in
the directory that would contain the loose copy of that ref, creating
any directories in the ref's path that do not exist. When the
transaction completes, the lockfile is deleted, but any empty parent
directories made when creating the lockfile are left in place. These
empty directories are not removed by 'pack-refs' or other housekeeping
tasks and will accumulate over time.
When deleting a loose ref, we remove all empty parent directories at the
end of the transaction.
This commit applies the parent directory cleanup logic used when
deleting loose refs to packed refs as well.
Signed-off-by: Will Chandler <wfc@wfchandler.org>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The word "renamed" has two possible translations in many European
languages depending on whether one thing was renamed or two things were
renamed. Give translators freedom to alter any part of the message to
make it sound right in their language.
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Acked-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git repack -A -d" in a partial clone unnecessarily loosened
objects in promisor pack.
* rs/repack-without-loosening-promised-objects:
repack: avoid loosening promisor objects in partial clones
"git subtree" updates.
* ls/subtree: (30 commits)
subtree: be stricter about validating flags
subtree: push: allow specifying a local rev other than HEAD
subtree: allow 'split' flags to be passed to 'push'
subtree: allow --squash to be used with --rejoin
subtree: give the docs a once-over
subtree: have $indent actually affect indentation
subtree: don't let debug and progress output clash
subtree: add comments and sanity checks
subtree: remove duplicate check
subtree: parse revs in individual cmd_ functions
subtree: use "^{commit}" instead of "^0"
subtree: don't fuss with PATH
subtree: use "$*" instead of "$@" as appropriate
subtree: use more explicit variable names for cmdline args
subtree: use git-sh-setup's `say`
subtree: use `git merge-base --is-ancestor`
subtree: drop support for git < 1.7
subtree: more consistent error propagation
subtree: don't have loose code outside of a function
subtree: t7900: add porcelain tests for 'pull' and 'push'
...
SHA-256 transition.
* bc/hash-transition-interop-part-1:
hex: print objects using the hash algorithm member
hex: default to the_hash_algo on zero algorithm value
builtin/pack-objects: avoid using struct object_id for pack hash
commit-graph: don't store file hashes as struct object_id
builtin/show-index: set the algorithm for object IDs
hash: provide per-algorithm null OIDs
hash: set, copy, and use algo field in struct object_id
builtin/pack-redundant: avoid casting buffers to struct object_id
Use the final_oid_fn to finalize hashing of object IDs
hash: add a function to finalize object IDs
http-push: set algorithm when reading object ID
Always use oidread to read into struct object_id
hash: add an algo member to struct object_id
In previous changes, mailinfo has learnt to process lines that decoded
from base64 or quoted-printable, and ends with CRLF.
Let's teach "am" that new trick, too.
Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In previous changes, we've turned on warning for quoted CR in base64 or
quoted-printable email messages. Some projects see those quoted CR a lot,
they know that it happens most of the time, and they find it's desirable
to always strip those CR.
Those projects in question usually fall back to use other tools to handle
patches when receive such patches.
Let's help those projects handle those patches by stripping those
excessive CR.
Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In previous change, Git starts to warn for quoted CRLF in decoded
base64/QP email. Despite those warnings are usually helpful,
quoted CRLF could be part of some users' workflow.
Let's give them an option to turn off the warning completely.
Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When SMTP servers receive 8-bit email messages, possibly with only
LF as line ending, some of them decide to change said LF to CRLF.
Some mailing list softwares, when receive 8-bit email messages,
decide to encode those messages in base64 or quoted-printable.
If an email is transfered through above mail servers, then distributed
by such mailing list softwares, the recipients will receive an email
contains a patch mungled with CRLF encoded inside another encoding.
Thus, such CR (in CRLF) couldn't be dropped by "mailsplit".
Hence, the mailed patch couldn't be applied cleanly.
Such accidents have been observed in the wild [1].
Instead of silently rejecting those messages, let's give our users
some warnings if such CR (as part of CRLF) is found.
[1]: https://nmbug.notmuchmail.org/nmweb/show/m2lf9ejegj.fsf%40guru.guru-group.fi
Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The description of "%ch" is missing a space after "human style", before
the parenthetical remark. This description was introduced in b722d4560e
("pretty: provide human date format", 2021-04-25). That commit also
added "%ah", which does have the space already.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Drop the ")" at the end of this paragraph. There's a parenthetical
remark in this paragraph, but it's been closed on the line above.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Portability fix for command line completion script (in contrib/).
* si/zsh-complete-comment-fix:
work around zsh comment in __git_complete_worktree_paths
Further update the command line completion (in contrib/) for "git
stash".
* dl/complete-stash-updates:
git-completion.bash: consolidate cases in _git_stash()
git-completion.bash: use $__git_cmd_idx in more places
git-completion.bash: rename to $__git_cmd_idx
git-completion.bash: separate some commands onto their own line
