| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
The ref iteration code used to optionally allow dangling refs to be
shown, which has been tightened up.
* jk/ref-paranoia:
refs: drop "broken" flag from for_each_fullref_in()
ref-filter: drop broken-ref code entirely
ref-filter: stop setting FILTER_REFS_INCLUDE_BROKEN
repack, prune: drop GIT_REF_PARANOIA settings
refs: turn on GIT_REF_PARANOIA by default
refs: omit dangling symrefs when using GIT_REF_PARANOIA
refs: add DO_FOR_EACH_OMIT_DANGLING_SYMREFS flag
refs-internal.h: reorganize DO_FOR_EACH_* flag documentation
refs-internal.h: move DO_FOR_EACH_* flags next to each other
t5312: be more assertive about command failure
t5312: test non-destructive repack
t5312: create bogus ref as necessary
t5312: drop "verbose" helper
t5600: provide detached HEAD for corruption failures
t5516: don't use HEAD ref for invalid ref-deletion tests
t7900: clean up some more broken refs
|
|
HTTPS error handling updates.
* ab/http-pinned-public-key-mismatch:
http: check CURLE_SSL_PINNEDPUBKEYNOTMATCH when emitting errors
|
|
Compilation fix.
* js/win-lazyload-buildfix:
Makefile: restrict -Wpedantic and -Wno-pedantic-ms-format better
lazyload.h: use an even more generic function pointer than FARPROC
lazyload.h: fix warnings about mismatching function pointer types
|
|
Test updates.
* sg/test-split-index-fix:
read-cache: fix GIT_TEST_SPLIT_INDEX
tests: disable GIT_TEST_SPLIT_INDEX for sparse index tests
read-cache: look for shared index files next to the index, too
t1600-index: disable GIT_TEST_SPLIT_INDEX
t1600-index: don't run git commands upstream of a pipe
t1600-index: remove unnecessary redirection
|
|
"git multi-pack-index write --bitmap" learns to propagate the
hashcache from original bitmap to resulting bitmap.
* tb/midx-write-propagate-namehash:
t5326: test propagating hashcache values
p5326: generate pack bitmaps before writing the MIDX bitmap
p5326: don't set core.multiPackIndex unnecessarily
p5326: create missing 'perf-tag' tag
midx.c: respect 'pack.writeBitmapHashcache' when writing bitmaps
pack-bitmap.c: propagate namehash values from existing bitmaps
t/helper/test-bitmap.c: add 'dump-hashes' mode
|
|
Since C++20, the language has a generalized comparison operator <=>.
Teach the cpp driver not to separate it into <= and > tokens.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Since C++17, the single-quote can be used as digit separator:
3.141'592'654
1'000'000
0xdead'beaf
Make it known to the word regex of the cpp driver, so that numbers are
not split into separate tokens at the single-quotes.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
We are going to add support for C++'s digit-separating single-quote and
the spaceship operator. By adding the test cases in this separate
commit, the effect on the word highlighting will become more obvious
as the features are implemented and the file cpp/expect is updated.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
When "cat-file --batch-all-objects" iterates over each object, it knows
where to find each one. But when we look up details of the object, we
don't use that information at all.
This patch teaches it to use the pack/offset pair when we're iterating
over objects in a pack. This yields a measurable speed improvement
(timings on a fully packed clone of linux.git):
Benchmark #1: ./git.old cat-file --batch-all-objects --unordered --batch-check="%(objecttype) %(objectname)"
Time (mean ± σ): 8.128 s ± 0.118 s [User: 7.968 s, System: 0.156 s]
Range (min … max): 8.007 s … 8.301 s 10 runs
Benchmark #2: ./git.new cat-file --batch-all-objects --unordered --batch-check="%(objecttype) %(objectname)"
Time (mean ± σ): 4.294 s ± 0.064 s [User: 4.167 s, System: 0.125 s]
Range (min … max): 4.227 s … 4.457 s 10 runs
Summary
'./git.new cat-file --batch-all-objects --unordered --batch-check="%(objecttype) %(objectname)"' ran
1.89 ± 0.04 times faster than './git.old cat-file --batch-all-objects --unordered --batch-check="%(objecttype) %(objectname)"
The implementation is pretty simple: we just call packed_object_info()
instead of oid_object_info_extended() when we can. Most of the changes
are just plumbing the pack/offset pair through the callstack. There is
one subtlety: replace lookups are not handled by packed_object_info().
But since those are disabled for --batch-all-objects, and since we'll
only have pack info when that option is in effect, we don't have to
worry about that.
There are a few limitations to this optimization which we could address
with further work:
- I didn't bother recording when we found an object loose. Technically
this could save us doing a fruitless lookup in the pack index. But
opening and mmap-ing a loose object is so expensive in the first
place that this doesn't matter much. And if your repository is large
enough to care about per-object performance, most objects are going
to be packed anyway.
- This works only in --unordered mode. For the sorted mode, we'd have
to record the pack/offset pair as part of our oid-collection. That's
more code, plus at least 16 extra bytes of heap per object. It would
probably still be a net win in runtime, but we'd need to measure.
- For --batch, this still helps us with getting the object metadata,
but we still do a from-scratch lookup for the object contents. This
probably doesn't matter that much, because the lookup cost will be
much smaller relative to the cost of actually unpacking and printing
the objects.
For small objects, we could probably swap out read_object_file() for
using packed_object_info() with a "object_info.contentp" to get the
contents. But we'd still need to deal with streaming for larger
objects. A better path forward here is to teach the initial
oid_object_info_extended() / packed_object_info() calls to retrieve
the contents of smaller objects while they are already being
accessed. That would save the extra lookup entirely. But it's a
non-trivial feature to add to the object_info code, so I left it for
now.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
When we originally added --batch-all-objects, it stuffed everything into
an oid_array(), and then iterated over that array with a callback to
write the actual output.
When we later added --unordered, that code path writes immediately as we
discover each object, but just calls the same batch_object_cb() as our
entry point to the writing code. That callback has a narrow interface;
it only receives the oid, but we know much more about each object in the
unordered write (which we'll make use of in the next patch). So let's
just call batch_object_write() directly. The callback wasn't saving us
much effort.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
When we're enumerating all objects in the object database, it doesn't
make sense to respect refs/replace. The point of this option is to
enumerate all of the objects in the database at a low level. By
definition we'd already show the replacement object's contents (under
its real oid), and showing those contents under another oid is almost
certainly working against what the user is trying to do.
Note that you could make the same argument for something like:
git show-index <foo.idx |
awk '{print $2}' |
git cat-file --batch
but there we can't know in cat-file exactly what the user intended,
because we don't know the source of the input. They could be trying to
do low-level debugging, or they could be doing something more high-level
(e.g., imagine a porcelain built around cat-file for its object
accesses). So in those cases, we'll have to rely on the user specifying
"git --no-replace-objects" to tell us what to do.
One _could_ make an argument that "cat-file --batch" is sufficiently
low-level plumbing that it should not respect replace-objects at all
(and the caller should do any replacement if they want it). But we have
been doing so for some time. The history is a little tangled:
- looking back as far as v1.6.6, we would not respect replace refs for
--batch-check, but would for --batch (because the former used
sha1_object_info(), and the replace mechanism only affected actual
object reads)
- this discrepancy was made even weirder by 98e2092b50 (cat-file:
teach --batch to stream blob objects, 2013-07-10), where we always
output the header using the --batch-check code, and then printed the
object separately. This could lead to "cat-file --batch" dying (when
it notices the size or type changed for a non-blob object) or even
producing bogus output (in streaming mode, we didn't notice that we
wrote the wrong number of bytes).
- that persisted until 1f7117ef7a (sha1_file: perform object
replacement in sha1_object_info_extended(), 2013-12-11), which then
respected replace refs for both forms.
So it has worked reliably this way for over 7 years, and we should make
sure it continues to do so. That could also be an argument that
--batch-all-objects should not change behavior (which this patch is
doing), but I really consider the current behavior to be an unintended
bug. It's a side effect of how the code is implemented (feeding the oids
back into oid_object_info() rather than looking at what we found while
reading the loose and packed object storage).
The implementation is straight-forward: we just disable the global
read_replace_refs flag when we're in --batch-all-objects mode. It would
perhaps be a little cleaner to change the flag we pass to
oid_object_info_extended(), but that's not enough. We also read objects
via read_object_file() and stream_blob_to_fd(). The former could switch
to its _extended() form, but the streaming code has no mechanism for
disabling replace refs. Setting the global flag works, and as a bonus,
it's impossible to have any "oops, we're sometimes replacing the object
and sometimes not" bugs in the output (like the ones caused by
98e2092b50 above).
The tests here cover the regular-input and --batch-all-objects cases,
for both --batch-check and --batch. There is a test in t6050 that covers
the regular-input case with --batch already, but this new one goes much
further in actually verifying the output (plus covering --batch-check
explicitly). This is perhaps a little overkill and the tests would be
simpler just covering --batch-check, but I wanted to make sure we're
checking that --batch output is consistent between the header and the
content. The global-flag technique used here makes that easy to get
right, but this is future-proofing us against regressions.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
The note on ordering for --batch-all-objects was written when that was
the only possible ordering. These days we have --unordered, too, so
let's point to it.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
A few of the tests create intentionally broken objects with broken
types. Let's clean them up after we're done with them, so that later
tests don't get confused (we hadn't noticed because this only affects
tests which use --batch-all-objects, but I'm about to add more).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Submodule ODBs are never added as alternates during the execution of the
test suite, but there may be a rare interaction that the test suite does
not have coverage of. Add a trace message when this happens, so that
users who trace their commands can notice such occurrences.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Pass the repo explicitly when calling check_has_commit() to avoid
relying on add_submodule_odb(). With this commit and the parent commit,
the last remaining tests no longer rely on add_submodule_odb(), so mark
these tests accordingly.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
In a35e03dee0 ("submodule: lazily add submodule ODBs as alternates",
2021-09-08), Git was taught to add all known submodule ODBs as
alternates when attempting to read an object that doesn't exist, as a
fallback for when a submodule object is read as if it were in
the_repository. However, this behavior wasn't restricted to happen only
when reading from the_repository. Fix this.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
After the parent commit and some of its ancestors, the only place
commits are being accessed through alternates is in the user-facing
message formatting code. Fix those, and remove the add_submodule_odb()
calls.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
There is currently no support for peeling the current ref of an iterator
iterating over a non-the_repository ref store, and none is needed. Thus,
for now, BUG() if that happens.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Note that should_pack_ref() is called when writing refs, which is only
supported for the_repository, hence the_repository is hardcoded there.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
In preparation for the next 2 patches that adds (partial) support for
arbitrary repositories to ref iterators, plumb a repository into all ref
stores. There are no changes to program logic.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
The "git log" command limits its output to the commits that contain strings
matched by a pattern when the "--grep=<pattern>" option is used, but unlike
output from "git grep -e <pattern>", the matches are not highlighted,
making them harder to spot.
Teach the pretty-printer code to highlight matches from the
"--grep=<pattern>", "--author=<pattern>" and "--committer=<pattern>"
options (to view the last one, you may have to ask for --pretty=fuller).
Also, it must be noted that we are effectively greping the content twice
(because it would be a hassle to rework the existing matching code to do
a /g match and then pass it all down to the coloring code), however it only
slows down "git log --author=^H" on this repository by around 1-2%
(compared to v2.33.0), so it should be a small enough slow down to justify
the addition of the feature.
Signed-off-by: Hamza Mahfooz <someguy@effective-light.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Change the comparisons against OPT_SHORT and OPT_UNSET to an enum
which keeps track of how a given option got parsed. The case of "0"
was an implicit OPT_LONG, so let's add an explicit label for it.
Due to the xor in 0f1930c5875 (parse-options: allow positivation of
options starting, with no-, 2012-02-25) the code already relied on
this being set back to 0. To avoid refactoring the logic involved in
that let's just start the enum at "0" instead of the usual "1<<0" (1),
but BUG() out if we don't have one of our expected flags.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
There were no tests for checking the specific output that we'll
generate in optname(), let's add some. That output was added back in
4a59fd13122 (Add a simple option parser., 2007-10-15).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Change these two functions to "static", the last user of "optname()"
outside of parse-options.c itself went away in the preceding commit,
for the reasons noted in 9440b831ad5 (parse-options: replace
opterror() with optname(), 2018-11-10) we shouldn't be adding any more
users of it.
The "optbug()" function was never used outside of parse-options.c, but
was made non-static in 1f275b7c4ca (parse-options: export opterr,
optbug, 2011-08-11). I think the only external user of optname() was
the commit-graph.c caller added in 09e0327f57 (builtin/commit-graph.c:
introduce '--max-new-filters=<n>', 2020-09-18).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Stop using optname() in builtin/commit-graph.c to emit an error with
the --max-new-filters option. This changes code added in 809e0327f57
(builtin/commit-graph.c: introduce '--max-new-filters=<n>',
2020-09-18).
See 9440b831ad5 (parse-options: replace opterror() with optname(),
2018-11-10) for why using optname() like this is considered bad,
i.e. it's assembling human-readable output piecemeal, and the "option
`X'" at the start can't be translated.
It didn't matter in this case, but this code was also buggy in its use
of "opt->flags" to optname(), that function expects flags, but not
*those* flags.
Let's pass "max-new-filters" to the new error because the option name
isn't translatable, and because we can re-use a translation added in
f7e68a08780 (parse-options: check empty value in OPT_INTEGER and
OPT_ABBREV, 2019-05-29).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
In preparation for making "optname" a static function move it above
its first user in parse-options.c.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Change the "flags" members of "struct option" to refer to their
corresponding "enum" defined earlier in the file.
The benefit of changing this to an enum isn't as great as with some
"enum parse_opt_type" as we'll always check this as a bitfield, so we
can't rely on the compiler checking "case" arms for us. But let's do
it for consistency with the rest of the file.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Change the "default" case in parse_options() that handles the return
value of parse_options_step() to simply have a "case" arm for
PARSE_OPT_UNKNOWN, instead of leaving it to a comment. This means the
compiler can warn us about any missing case arms.
This adjusts code added in ff43ec3e2d2 (parse-opt: create
parse_options_step., 2008-06-23), given its age it may pre-date the
existence (or widespread use) of this coding style, which we've since
adopted more widely.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Use the "enum parse_opt_result" instead of an "int flags" as the
return value of the applicable functions in parse-options.c.
This will help catch future bugs, such as the missing "case" arms in
the two existing users of the API in "blame.c" and "shortlog.c". A
third caller in 309be813c9b (update-index: migrate to parse-options
API, 2010-12-01) was already checking for these.
As can be seen when trying to sort through the deluge of warnings
produced when compiling this with CC=g++ (mostly unrelated to this
change) we're not consistently using "enum parse_opt_result" even now,
i.e. we'll return error() and "return 0;". See f41179f16ba
(parse-options: avoid magic return codes, 2019-01-27) for a commit
which started changing some of that.
I'm not doing any more of that exhaustive migration here, and it's
probably not worthwhile past the point of being able to check "enum
parse_opt_result" in switch().
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Use the "enum parse_opt_flags" instead of an "int flags" as arguments
to the various functions in parse-options.c.
Even though this is an enum bitfield there's there's a benefit to
doing this when it comes to the wider C ecosystem. E.g. the GNU
debugger (gdb) will helpfully detect and print out meaningful enum
labels in this case. Here's the output before and after when breaking
in "parse_options()" after invoking "git stash show":
Before:
(gdb) p flags
$1 = 9
After:
(gdb) p flags
$1 = (PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_UNKNOWN)
Of course as noted in[1] there's a limit to this smartness,
i.e. manually setting it with unrelated enum labels won't be
caught. There are some third-party extensions to do more exhaustive
checking[2], perhaps we'll be able to make use of them sooner than
later.
We've also got prior art using this pattern in the codebase. See
e.g. "enum bloom_filter_computed" added in 312cff52074 (bloom: split
'get_bloom_filter()' in two, 2020-09-16) and the "permitted" enum
added in ce910287e72 (add -p: fix checking of user input, 2020-08-17).
1. https://lore.kernel.org/git/87mtnvvj3c.fsf@evledraar.gmail.com/
2. https://github.com/sinelaw/elfs-clang-plugins/blob/master/enums_conversion/README.md
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Commit cdc2d5f11f1a (builtin/blame: dim uninteresting metadata lines,
2018-04-23) and 25d5f52901f0 (builtin/blame: highlight recently changed
lines, 2018-04-23) introduce --color-lines and --color-by-age options to
git blame, respectively. While both options are mentioned in usage help,
they aren't documented in git-blame(1). Document them.
Co-authored-by: Dr. Matthias St. Pierre <m.st.pierre@ncp-e.com>
Signed-off-by: Dr. Matthias St. Pierre <m.st.pierre@ncp-e.com>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Generally, word regex can be written such that they match tokens
liberally and need not model the actual syntax because it can be assumed
that the regex will only be applied to syntactically correct text.
The regex for cpp (C/C++) is too liberal, though. It regards these
sequences as single tokens:
1+2
1.5-e+2+f
and the following amalgams as one token:
.l as in str.length
.f as in str.find
.e as in str.erase
Tighten the regex in the following way:
- Accept + and - only in one position in the exponent. + and - are no
longer regarded as the sign of a number and are treated by the
catcher-all that is not visible in the driver's regex.
- Accept a leading decimal point only when it is followed by a digit.
For readability, factor hex- and binary numbers into an own term.
As a drive-by, this fixes that floating point numbers such as 12E5
(with upper-case E) were split into two tokens.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
The word regex is too loose and matches long streaks of characters
that should actually be separate tokens. Add these problematic test
cases. Separate the lines with text that will remain identical in the
pre- and post-image so that the diff algorithm will not lump removals
and additions of consecutive lines together. This makes the expected
output easier to read.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
8d96e7288f2b (t4034: bulk verify builtin word regex sanity, 2010-12-18)
added many tests with the intent to verify that operators consisting of
more than one symbol are kept together. These are tested by probing a
transition from, e.g., a!=b to x!=y, which results in the word-diff
[-a-]{+x+}!=[-b-]{+y+}
But that proves only that the letters and operators are separate tokens.
To prove that != is an unseparable token, we have to probe a transition
from, e.g., a=b to a!=b having a word-diff
a[-=-]{+!=+}b
that proves that the ! is not separate from the =.
In the post-image, add to or remove from operators a character that
turns it into another valid operator.
Change the identifiers used around operators such that the diff
algorithm does not have an incentive to match, e.g., a<b in one spot
in the pre-image with a<b elsewhere in the post-image.
Adjust the expected output to match the new differences. Notice that
there are some undesirable tokenizations around e, ., and -. This will
be addressed in a later change.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
This command dumps individual tables or a stack of of tables.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
provide a command-line utility for inspecting individual tables, and
inspecting a complete ref database
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Helped-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
The packed/loose format has restrictions on refnames: a and a/b cannot
coexist. This limitation does not apply to reftable per se, but must be
maintained for interoperability. This code adds validation routines to
abort transactions that are trying to add invalid names.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
This adds an abstract, read-only interface to the ref database.
This primitive is used to construct the read view of the ref database
(the read view is constructed by merging several *.ref files). It also
provides the mechanism to provide a unified view of the refs in the main
repository and the per-worktree refs.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
This is needed to create a merged view multiple reftables
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
With support for reading and writing files in place, we can construct files (in
memory) and attempt to read them back.
Because some sections of the format are optional (eg. indices, log entries), we
have to exercise this code using multiple sizes of input data
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
This supports reading a single reftable file.
The commit introduces an abstract iterator type, which captures the usecases
both of reading individual refs, and iterating over a segment of the ref
namespace.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
The reftable format includes support for an (OID => ref) map. This map can speed
up visibility and reachability checks. In particular, various operations along
the fetch/push path within Gerrit have ben sped up by using this structure.
The map is constructed with help of a binary tree. Object IDs are hashes, so
they are uniformly distributed. Hence, the tree does not attempt forced
rebalancing.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
The reftable format is structured as a sequence of block. Within a block,
records are prefix compressed, with an index of offsets for fully expand keys to
enable binary search within blocks.
This commit provides the logic to read and write these blocks.
Helped-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
This will be needed for reading reflog blocks in reftable.
Helped-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
The reftable format is structured as a sequence of blocks, and each block
contains a sequence of prefix-compressed key-value records. There are 4 types of
records, and they have similarities in how they must be handled. This is
achieved by introducing a polymorphic 'record' type that encapsulates ref, log,
index and object records.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
The reftable format is usually used with files for storage. However, we abstract
away this using the blocksource data structure. This has two advantages:
* log blocks are zlib compressed, and handling them is simplified if we can
discard byte segments from within the block layer.
* for unittests, it is useful to read and write in-memory. The blocksource
allows us to abstract the data away from on-disk files.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
|
This commit provides basic utility classes for the reftable library.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
|
