When searching over restart points in a block we decode the key of each
of the records, which results in a memory allocation. This is quite
pointless though given that records it restart points will never use
prefix compression and thus store their keys verbatim in the block.
Refactor the code so that we can avoid decoding the keys, which saves us
some allocations.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We're about to refactor the binary search over restart points so that it
does not need to fully decode the record keys anymore. To do so we will
need to decode the record key lengths, which is non-trivial logic.
Extract the logic to decode these lengths from `refatble_decode_key()`
so that we can reuse it.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When doing the binary search over restart points in a block we need to
decode the record keys. This decoding step can result in an error when
the block is corrupted, which we indicate to the caller of the binary
search by setting `args.error = 1`. But the only caller that exists
mishandles this because it in fact performs the error check before
calling `binsearch()`.
Fix this bug by checking for errors at the right point in time.
Furthermore, refactor `binsearch()` so that it aborts the search in case
the callback function returns a negative value so that we don't
needlessly continue to search the block.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When seeking a record in our block reader we perform a binary search
over the block's restart points so that we don't have to do a linear
scan over the whole block. The logic to do so is quite intricate though,
which makes it hard to understand.
Improve documentation and rename some of the functions and variables so
that the code becomes easier to understand overall. This refactoring
should not result in any change in behaviour.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It is comparatively hard to understand how exactly the binary search
over refnames works given that the function and variable names are not
exactly easy to grasp. Rename them to make this more obvious. This
should not result in any change in behaviour.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The `binsearch()` test is somewhat weird in that it doesn't explicitly
spell out its expectations. Instead it does so in a rather ad-hoc way
with some hard-to-understand computations.
Refactor the test to spell out the needle as well as expected index for
all testcases. This refactoring highlights that the `binsearch_func()`
is written somewhat weirdly to find the first integer smaller than the
needle, not smaller or equal to it. Adjust the function accordingly.
While at it, rename the callback function to better convey its meaning.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The `binsearch()` function can be used to find the first element for
which a callback functions returns a truish value. But while the array
size is of type `size_t`, the function in fact returns an `int` that is
supposed to index into that array.
Fix the function signature to return a `size_t`. This conversion does
not change any semantics given that the function would only ever return
a value in the range `[0, sz]` anyway.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The output format for dates "iso-strict" has been tweaked to show
a time in the Zulu timezone with "Z" suffix, instead of "+00:00".
* bb/iso-strict-utc:
date: make "iso-strict" conforming for the UTC timezone
The status.showUntrackedFiles configuration variable was
incorrectly documented to accept "false", which has been corrected.
* jw/doc-show-untracked-files-fix:
doc: status.showUntrackedFiles does not take "false"
Mark-ups used in the documentation has been improved for
consistency.
* ja/doc-markup-fixes:
doc: git-clone: format placeholders
doc: git-clone: format verbatim words
doc: git-init: rework config item init.templateDir
doc: git-init: rework definition lists
doc: git-init: format placeholders
doc: git-init: format verbatim parts
The code to iterate over reflogs in the reftable has been optimized
to reduce memory allocation and deallocation.
Reviewed-by: Josh Steadmon <steadmon@google.com>
cf. <Ze9eX-aaWoVaqsPP@google.com>
* ps/reftable-reflog-iteration-perf:
refs/reftable: track last log record name via strbuf
reftable/record: use scratch buffer when decoding records
reftable/record: reuse message when decoding log records
reftable/record: reuse refnames when decoding log records
reftable/record: avoid copying author info
reftable/record: convert old and new object IDs to arrays
refs/reftable: reload correct stack when creating reflog iter
Users with safe.bareRepository=explicit can still work from within
$GIT_DIR of a seconary worktree (which resides at .git/worktrees/$name/)
of the primary worktree without explicitly specifying the $GIT_DIR
environment variable or the --git-dir=<path> option.
* jc/safe-implicit-bare:
setup: notice more types of implicit bare repositories
The code to find the effective end of log message can fall into an
endless loop, which has been corrected.
* fs/find-end-of-log-message-fix:
wt-status: don't find scissors line beyond buf len
The reftable code has its own custom binary search function whose
comparison callback has an unusual interface, which caused the
binary search to degenerate into a linear search, which has been
corrected.
* ps/reftable-block-search-fix:
reftable/block: fix binary search over restart counter
reftable/record: fix memory leak when decoding object records
The code in reftable backend that creates new table files works
better with the tempfile framework to avoid leaving cruft after a
failure.
* ps/reftable-stack-tempfile:
reftable/stack: register compacted tables as tempfiles
reftable/stack: register lockfiles during compaction
reftable/stack: register new tables as tempfiles
lockfile: report when rollback fails
The parse-options code that deals with abbreviated long option
names have been cleaned up.
Reviewed-by: Josh Steadmon <steadmon@google.com>
cf. <ZfDM5Or3EKw7Q9SA@google.com>
* rs/opt-parse-long-fixups:
parse-options: rearrange long_name matching code
parse-options: normalize arg and long_name before comparison
parse-options: detect ambiguous self-negation
parse-options: factor out register_abbrev() and struct parsed_option
parse-options: set arg of abbreviated option lazily
parse-options: recognize abbreviated negated option with arg
Some trace2 events that lacked def_param have learned to show it,
enriching the output.
Reviewed-by: Josh Steadmon <steadmon@google.com>
cf. <ZejkVOVQBZhLVfHW@google.com>
* jh/trace2-missing-def-param-fix:
trace2: emit 'def_param' set with 'cmd_name' event
trace2: avoid emitting 'def_param' set more than once
t0211: demonstrate missing 'def_param' events for certain commands
Code simplification by getting rid of code that sets an environment
variable that is no longer used.
* pw/rebase-i-ignore-cherry-pick-help-environment:
rebase -i: stop setting GIT_CHERRY_PICK_HELP
Uses of xwrite() helper have been audited and updated for better
error checking and simpler code.
* jc/xwrite-cleanup:
repack: check error writing to pack-objects subprocess
sideband: avoid short write(2)
unpack: replace xwrite() loop with write_in_full()
When git refuses to create a branch because the proposed branch
name is not a valid refname, an advice message is given to refer
the user to exact naming rules.
* kh/branch-ref-syntax-advice:
branch: advise about ref syntax rules
advice: use double quotes for regular quoting
advice: use backticks for verbatim
advice: make all entries stylistically consistent
t3200: improve test style
The logic to complete the command line arguments to "git worktree"
subcommand (in contrib/) has been updated to correctly honor things
like "git -C dir" etc.
* rj/complete-worktree-paths-fix:
completion: fix __git_complete_worktree_paths
The command line completion script (in contrib/) learned to
complete "git reflog" better.
* rj/complete-reflog:
completion: reflog subcommands and options
completion: factor out __git_resolve_builtins
completion: introduce __git_find_subcommand
completion: reflog show <log-options>
completion: reflog with implicit "show"
With release 2.44 we got rid of all uses of test_i18ngrep and there
is no in-flight topic that adds a new use of it. Make a call to
test_i18ngrep a hard failure, so that we can remove it at the end
of this release cycle.
* jc/test-i18ngrep:
test_i18ngrep: hard deprecate and forbid its use
Trailer API updates.
Acked-by: Christian Couder <christian.couder@gmail.com>
cf. <CAP8UFD1Zd+9q0z1JmfOf60S2vn5-sD3SafDvAJUzRFwHJKcb8A@mail.gmail.com>
* la/trailer-api:
format_trailers_from_commit(): indirectly call trailer_info_get()
format_trailer_info(): move "fast path" to caller
format_trailers(): use strbuf instead of FILE
trailer_info_get(): reorder parameters
trailer: move interpret_trailers() to interpret-trailers.c
trailer: reorder format_trailers_from_commit() parameters
trailer: rename functions to use 'trailer'
shortlog: add test for de-duplicating folded trailers
trailer: free trailer_info _after_ all related usage
The "core.commentChar" configuration variable only allows an ASCII
character, which was not clearly documented, which has been
corrected.
* kh/doc-commentchar-is-a-byte:
config: document `core.commentChar` as ASCII-only
FSMonitor client code was confused when FSEvents were given in a
different case on a case-insensitive filesystem, which has been
corrected.
Acked-by: Patrick Steinhardt <ps@pks.im>
cf. <ZehofMaSZyUq8S1N@tanuki>
* jh/fsmonitor-icase-corner-case-fix:
fsmonitor: support case-insensitive events
fsmonitor: refactor bit invalidation in refresh callback
fsmonitor: trace the new invalidated cache-entry count
fsmonitor: return invalidated cache-entry count on non-directory event
fsmonitor: remove custom loop from non-directory path handler
fsmonitor: return invalidated cache-entry count on directory event
fsmonitor: move untracked-cache invalidation into helper functions
fsmonitor: refactor untracked-cache invalidation
dir: create untracked_cache_invalidate_trimmed_path()
fsmonitor: refactor refresh callback for non-directory events
fsmonitor: clarify handling of directory events in callback helper
fsmonitor: refactor refresh callback on directory events
t7527: add case-insensitve test for FSMonitor
name-hash: add index_dir_find()
The code to iterate over refs with the reftable backend has seen
some optimization.
* ps/reftable-iteration-perf-part2:
refs/reftable: precompute prefix length
reftable: allow inlining of a few functions
reftable/record: decode keys in place
reftable/record: reuse refname when copying
reftable/record: reuse refname when decoding
reftable/merged: avoid duplicate pqueue emptiness check
reftable/merged: circumvent pqueue with single subiter
reftable/merged: handle subiter cleanup on close only
reftable/merged: remove unnecessary null check for subiters
reftable/merged: make subiters own their records
reftable/merged: advance subiter on subsequent iteration
reftable/merged: make `merged_iter` structure private
reftable/pq: use `size_t` to track iterator index
The implementation in "git clean" that makes "-n" and "-i" ignore
clean.requireForce has been simplified, together with the
documentation.
* so/clean-dry-run-without-force:
clean: further clean-up of implementation around "--force"
clean: improve -n and -f implementation and documentation
This test doesn't systematically check a negative timezone offset. Add a
test for each format that outputs the offset to improve our test
coverage.
Signed-off-by: Beat Bolli <dev+git@drbeat.li>
ISO 8601-1:2020-12 specifies that a zero timezone offset must be denoted
with a "Z" suffix instead of the numeric "+00:00". Add the correponding
special case to show_date() and a new test.
Changing an established output format which might be depended on by
scripts is always problematic, but here we choose to adhere more closely
to the published standard.
Reported-by: Michael Osipov <michael.osipov@innomotics.com>
Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The `status.showUntrackedFiles` config option only accepts the
values "no", "normal" or "all", but not as this part of the man page
suggested "false". While we are at it, camel-case the name of the
variable.
Signed-off-by: Jonas Wunderlich <git@03j.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a simple example on how object hashes can be generated manually.
Further, because the document suggests to have a look at the initial
commit, clarify that some details changed since that time.
Signed-off-by: Dirk Gouders <dirk@gouders.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Code simplification to one unit-test program.
* rs/t-ctype-simplify:
t-ctype: avoid duplicating class names
t-ctype: align output of i
t-ctype: simplify EOF check
t-ctype: allow NUL anywhere in the specification string
