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junio-gpg-pub
v0.99
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137 Commits (0df670bc0b8b5499859829ba0889ce96a75304a6)
Author | SHA1 | Message | Date |
---|---|---|---|
Jeff King | d70a9eb611 |
strvec: rename struct fields
The "argc" and "argv" names made sense when the struct was argv_array, but now they're just confusing. Let's rename them to "nr" (which we use for counts elsewhere) and "v" (which is rather terse, but reads well when combined with typical variable names like "args.v"). Note that we have to update all of the callers immediately. Playing tricks with the preprocessor is hard here, because we wouldn't want to rewrite unrelated tokens. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
4 years ago |
Jeff King | f6d8942b1f |
strvec: fix indentation in renamed calls
Code which split an argv_array call across multiple lines, like: argv_array_pushl(&args, "one argument", "another argument", "and more", NULL); was recently mechanically renamed to use strvec, which results in mis-matched indentation like: strvec_pushl(&args, "one argument", "another argument", "and more", NULL); Let's fix these up to align the arguments with the opening paren. I did this manually by sifting through the results of: git jump grep 'strvec_.*,$' and liberally applying my editor's auto-format. Most of the changes are of the form shown above, though I also normalized a few that had originally used a single-tab indentation (rather than our usual style of aligning with the open paren). I also rewrapped a couple of obvious cases (e.g., where previously too-long lines became short enough to fit on one), but I wasn't aggressive about it. In cases broken to three or more lines, the grouping of arguments is sometimes meaningful, and it wasn't worth my time or reviewer time to ponder each case individually. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
4 years ago |
Jeff King | 22f9b7f3f5 |
strvec: convert builtin/ callers away from argv_array name
We eventually want to drop the argv_array name and just use strvec consistently. There's no particular reason we have to do it all at once, or care about interactions between converted and unconverted bits. Because of our preprocessor compat layer, the names are interchangeable to the compiler (so even a definition and declaration using different names is OK). This patch converts all of the files in builtin/ to keep the diff to a manageable size. The conversion was done purely mechanically with: git ls-files '*.c' '*.h' | xargs perl -i -pe ' s/ARGV_ARRAY/STRVEC/g; s/argv_array/strvec/g; ' and then selectively staging files with "git add builtin/". We'll deal with any indentation/style fallouts separately. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
4 years ago |
Jeff King | dbbcd44fb4 |
strvec: rename files from argv-array to strvec
This requires updating #include lines across the code-base, but that's all fairly mechanical, and was done with: git ls-files '*.c' '*.h' | xargs perl -i -pe 's/argv-array.h/strvec.h/' Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
4 years ago |
Taylor Blau | 0bd52e27e3 |
commit-graph.h: store an odb in 'struct write_commit_graph_context'
There are lots of places in 'commit-graph.h' where a function either has (or almost has) a full 'struct object_directory *', accesses '->path', and then throws away the rest of the struct. This can cause headaches when comparing the locations of object directories across alternates (e.g., in the case of deciding if two commit-graph layers can be merged). These paths are normalized with 'normalize_path_copy()' which mitigates some comparison issues, but not all [1]. Replace usage of 'char *object_dir' with 'odb->path' by storing a 'struct object_directory *' in the 'write_commit_graph_context' structure. This is an intermediate step towards getting rid of all path normalization in 'commit-graph.c'. Resolving a user-provided '--object-dir' argument now requires that we compare it to the known alternates for equality. Prior to this patch, an unknown '--object-dir' argument would silently exit with status zero. This can clearly lead to unintended behavior, such as verifying commit-graphs that aren't in a repository's own object store (or one of its alternates), or causing a typo to mask a legitimate commit-graph verification failure. Make this error non-silent by 'die()'-ing when the given '--object-dir' does not match any known alternate object store. [1]: In my testing, for example, I can get one side of the commit-graph code to fill object_dir with "./objects" and the other with just "objects". Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
5 years ago |
Elijah Newren | 15beaaa3d1 |
Fix spelling errors in code comments
Reported-by: Jens Schleusener <Jens.Schleusener@fossies.org> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
5 years ago |
Derrick Stolee | 7211b9e753 |
repo-settings: consolidate some config settings
There are a few important config settings that are not loaded during git_default_config. These are instead loaded on-demand. Centralize these config options to a single scan, and store all of the values in a repo_settings struct. The values for each setting are initialized as negative to indicate "unset". This centralization will be particularly important in a later change to introduce "meta" config settings that change the defaults for these config settings. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
5 years ago |
SZEDER Gábor | 39d8831856 |
commit-graph: turn a group of write-related macro flags into an enum
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Acked-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
5 years ago |
Christian Couder | b14ed5adaf |
Use promisor_remote_get_direct() and has_promisor_remote()
Instead of using the repository_format_partial_clone global and fetch_objects() directly, let's use has_promisor_remote() and promisor_remote_get_direct(). This way all the configured promisor remotes will be taken into account, not only the one specified by extensions.partialClone. Also when cloning or fetching using a partial clone filter, remote.origin.promisor will be set to "true" instead of setting extensions.partialClone to "origin". This makes it possible to use many promisor remote just by fetching from them. Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
6 years ago |
Derrick Stolee | c2bc6e6ab0 |
commit-graph: create options for split files
The split commit-graph feature is now fully implemented, but needs some more run-time configurability. Allow direct callers to 'git commit-graph write --split' to specify the values used in the merge strategy and the expire time. Update the documentation to specify these values. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
6 years ago |
Derrick Stolee | 2d511cfc0b |
packfile: rename close_all_packs to close_object_store
The close_all_packs() method is now responsible for more than just pack-files. It also closes the commit-graph and the multi-pack-index. Rename the function to be more descriptive of its larger role. The name also fits because the input parameter is a raw_object_store. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
6 years ago |
Derrick Stolee | 5af8039452 |
commit-graph: collapse parameters into flags
The write_commit_graph() and write_commit_graph_reachable() methods currently take two boolean parameters: 'append' and 'report_progress'. As we update these methods, adding more parameters this way becomes cluttered and hard to maintain. Collapse these parameters into a 'flags' parameter, and adjust the callers to provide flags as necessary. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
6 years ago |
Derrick Stolee | e103f7276f |
commit-graph: return with errors during write
The write_commit_graph() method uses die() to report failure and exit when confronted with an unexpected condition. This use of die() in a library function is incorrect and is now replaced by error() statements and an int return type. Return zero on success and a negative value on failure. Now that we use 'goto cleanup' to jump to the terminal condition on an error, we have new paths that could lead to uninitialized values. New initializers are added to correct for this. The builtins 'commit-graph', 'gc', and 'commit' call these methods, so update them to check the return value. Test that 'git commit-graph write' returns a proper error code when hitting a failure condition in write_commit_graph(). Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
6 years ago |
Ævar Arnfjörð Bjarmason | bf3d70fe93 |
gc: handle & check gc.reflogExpire config
Don't redundantly run "git reflog expire --all" when gc.reflogExpire
and gc.reflogExpireUnreachable are set to "never", and die immediately
if those configuration valuer are bad.
As an earlier "assert lack of early exit" change to the tests for "git
reflog expire" shows, an early check of gc.reflogExpire{Unreachable,}
isn't wanted in general for "git reflog expire", but it makes sense
for "gc" because:
1) Similarly to
|
6 years ago |
Ævar Arnfjörð Bjarmason | cd8eb3a094 |
gc: refactor a "call me once" pattern
Change an idiom we're using to ensure that gc_before_repack() only
does work once (see
|
6 years ago |
Ævar Arnfjörð Bjarmason | e5cdbd5f70 |
gc: convert to using the_hash_algo
There's been a lot of changing of the hardcoded "40" values to the_hash_algo->hexsz, but we've so far missed this one where we hardcoded 38 for the loose object file length. This is because a SHA-1 like abcde[...] gets turned into objects/ab/cde[...]. There's no reason to suppose the same won't be the case for SHA-256, and reading between the lines in hash-function-transition.txt the format is planned to be the same. In the future we may want to further modify this code for the hash function transition. There's a potential pathological case here where we'll only consider the loose objects for the currently active hash, but objects for that hash will share a directory storage with the other hash. Thus we could theoretically have e.g. 1k SHA-1 loose objects, and 1 million SHA-256 objects. Then not notice that we need to pack them because we're currently using SHA-1, even though our FS may be straining under the stress of such humongous directories. So assuming that "gc" eventually learns to pack up both SHA-1 and SHA-256 objects regardless of what the current the_hash_algo is, perhaps this check should be changed to consider all files in objects/17/ matching [0-9a-f] 38 or 62 characters in length (i.e. both SHA-1 and SHA-256). But none of that is something we need to worry about now, and supporting both 38 and 62 characters depending on "the_hash_algo" removes another case of SHA-1 hardcoding. As noted in [1] I'm making no effort to somehow remove the hardcoding for "2" as in "use the first two hexdigits for the directory name". There's no indication that that'll ever change, and somehow generalizing it here would be a drop in the ocean, so there's no point in doing that. It also couldn't be done without coming up with some generalized version of the magical "objects/17" directory. See [2] for a discussion of that directory. 1. https://public-inbox.org/git/874l84ber7.fsf@evledraar.gmail.com/ 2. https://public-inbox.org/git/87k1mta9x5.fsf@evledraar.gmail.com/ Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
6 years ago |
Ævar Arnfjörð Bjarmason | 8bf14444c3 |
gc: remove redundant check for gc_auto_threshold
Checking gc_auto_threshold in too_many_loose_objects() was added in |
6 years ago |
Johannes Schindelin | 5bdece0d70 |
gc/repack: release packs when needed
On Windows, files cannot be removed nor renamed if there are still handles held by a process. To remedy that, we introduced the close_all_packs() function. Earlier, we made sure that the packs are released just before `git gc` is spawned, in case that gc wants to remove no-longer needed packs. But this developer forgot that gc itself also needs to let go of packs, e.g. when consolidating all packs via the --aggressive option. Likewise, `git repack -d` wants to delete obsolete packs and therefore needs to close all pack handles, too. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
6 years ago |
Nguyễn Thái Ngọc Duy | ec36c42a63 |
Indent code with TABs
We indent with TABs and sometimes for fine alignment, TABs followed by spaces, but never all spaces (unless the indentation is less than 8 columns). Indenting with spaces slips through in some places. Fix them. Imported code and compat/ are left alone on purpose. The former should remain as close as upstream as possible. The latter pretty much has separate maintainers, it's up to them to decide. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
6 years ago |
Ævar Arnfjörð Bjarmason | 6b89a34c89 |
gc: fix regression in 7b0f229222 impacting --quiet
Fix a regression in my recent
|
6 years ago |
Ævar Arnfjörð Bjarmason | 7b0f229222 |
commit-graph write: add progress output
Before this change the "commit-graph write" command didn't report any progress. On my machine this command takes more than 10 seconds to write the graph for linux.git, and around 1m30s on the 2015-04-03-1M-git.git[1] test repository (a test case for a large monorepository). Furthermore, since the gc.writeCommitGraph setting was added in |
6 years ago |
Derrick Stolee | 454ea2e4d7 |
treewide: use get_all_packs
There are many places in the codebase that want to iterate over all packfiles known to Git. The purposes are wide-ranging, and those that can take advantage of the multi-pack-index already do. So, use get_all_packs() instead of get_packed_git() to be sure we are iterating over all packfiles. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
6 years ago |
Jonathan Nieder | 3029970275 |
gc: do not return error for prior errors in daemonized mode
Some build machines started consistently failing to fetch updated source using "repo sync", with error error: The last gc run reported the following. Please correct the root cause and remove /build/.repo/projects/tools/git.git/gc.log. Automatic cleanup will not be performed until the file is removed. warning: There are too many unreachable loose objects; run 'git prune' to remove them. The cause takes some time to describe. In v2.0.0-rc0~145^2 (gc: config option for running --auto in background, 2014-02-08), "git gc --auto" learned to run in the background instead of blocking the invoking command. In this mode, it closed stderr to avoid interleaving output with any subsequent commands, causing warnings like the above to be swallowed; v2.6.3~24^2 (gc: save log from daemonized gc --auto and print it next time, 2015-09-19) addressed that by storing any diagnostic output in .git/gc.log and allowing the next "git gc --auto" run to print it. To avoid wasteful repeated fruitless gcs, when gc.log is present, the subsequent "gc --auto" would die after printing its contents. Most git commands, such as "git fetch", ignore the exit status from "git gc --auto" so all is well at this point: the user gets to see the error message, and the fetch succeeds, without a wasteful additional attempt at an automatic gc. External tools like repo[1], though, do care about the exit status from "git gc --auto". In non-daemonized mode, the exit status is straightforward: if there is an error, it is nonzero, but after a warning like the above, the status is zero. The daemonized mode, as a side effect of the other properties provided, offers a very strange exit code convention: - if no housekeeping was required, the exit status is 0 - the first real run, after forking into the background, returns exit status 0 unconditionally. The parent process has no way to know whether gc will succeed. - if there is any diagnostic output in gc.log, subsequent runs return a nonzero exit status to indicate that gc was not triggered. There's nothing for the calling program to act on on the basis of that error. Use status 0 consistently instead, to indicate that we decided not to run a gc (just like if no housekeeping was required). This way, repo and similar tools can get the benefit of the same behavior as tools like "git fetch" that ignore the exit status from gc --auto. Once the period of time described by gc.pruneExpire elapses, the unreachable loose objects will be removed by "git gc --auto" automatically. [1] https://gerrit-review.googlesource.com/c/git-repo/+/10598/ Reported-by: Andrii Dehtiarov <adehtiarov@google.com> Helped-by: Jeff King <peff@peff.net> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Jonathan Nieder | fec2ed2187 |
gc: exit with status 128 on failure
A value of -1 returned from cmd_gc gets propagated to exit(), resulting in an exit status of 255. Use die instead for a clearer error message and a controlled exit. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Jonathan Nieder | 3c426eccc2 |
gc: improve handling of errors reading gc.log
A collection of minor error handling fixes: - use an error message in lower case, following the usual style - quote filenames in error messages to make them easier to read and to decrease translation load by matching other 'stat' error messages - check for and report errors from 'read', too - avoid being confused by a gc.log larger than INT_MAX bytes Noticed by code inspection. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Kim Gybels | 12e73a3ce4 |
gc --auto: release pack files before auto packing
Teach gc --auto to release pack files before auto packing the repository to prevent failures when removing them. Also teach the test 'fetching with auto-gc does not lock up' to complain when it is no longer triggering an auto packing of the repository. Fixes https://github.com/git-for-windows/git/issues/500 Signed-off-by: Kim Gybels <kgybels@infogroep.be> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Derrick Stolee | d5d5d7b641 |
gc: automatically write commit-graph files
The commit-graph file is a very helpful feature for speeding up git operations. In order to make it more useful, make it possible to write the commit-graph file during standard garbage collection operations. Add a 'gc.commitGraph' config setting that triggers writing a commit-graph file after any non-trivial 'git gc' command. Defaults to false while the commit-graph feature matures. We specifically do not want to have this on by default until the commit-graph feature is fully integrated with history-modifying features like shallow clones. Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Martin Ågren | b227586831 |
lock_file: make function-local locks non-static
Placing `struct lock_file`s on the stack used to be a bad idea, because
the temp- and lockfile-machinery would keep a pointer into the struct.
But after
|
7 years ago |
Junio C Hamano | 8ab5aa4bd8 |
parseopt: handle malformed --expire arguments more nicely
A few commands that parse --expire=<time> command line option behave
sillily when given nonsense input. For example
$ git prune --no-expire
Segmentation falut
$ git prune --expire=npw; echo $?
129
Both come from parse_opt_expiry_date_cb().
The former is because the function is not prepared to see arg==NULL
(for "--no-expire", it is a norm; "--expire" at the end of the
command line could be made to pass NULL, if it is told that the
argument is optional, but we don't so we do not have to worry about
that case).
The latter is because it does not check the value returned from the
underlying parse_expiry_date().
This seems to be a recent regression introduced while we attempted
to avoid spewing the entire usage message when given a correct
option but with an invalid value at
|
7 years ago |
Junio C Hamano | 96913c9df6 |
gc: do not upcase error message shown with die()
Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Nguyễn Thái Ngọc Duy | 9806f5a7bf |
gc --auto: exclude base pack if not enough mem to "repack -ad"
pack-objects could be a big memory hog especially on large repos, everybody knows that. The suggestion to stick a .keep file on the giant base pack to avoid this problem is also known for a long time. Recent patches add an option to do just this, but it has to be either configured or activated manually. This patch lets `git gc --auto` activate this mode automatically when it thinks `repack -ad` will use a lot of memory and start affecting the system due to swapping or flushing OS cache. gc --auto decides to do this based on an estimation of pack-objects memory usage, which is quite accurate at least for the heap part, and whether that fits in half of system memory (the assumption here is for desktop environment where there are many other applications running). This mechanism only kicks in if gc.bigBasePackThreshold is not configured. If it is, it is assumed that the user already knows what they want. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Nguyễn Thái Ngọc Duy | 8fc6776247 |
gc: handle a corner case in gc.bigPackThreshold
This config allows us to keep <N> packs back if their size is larger than a limit. But if this N >= gc.autoPackLimit, we may have a problem. We are supposed to reduce the number of packs after a threshold because it affects performance. We could tell the user that they have incompatible gc.bigPackThreshold and gc.autoPackLimit, but it's kinda hard when 'git gc --auto' runs in background. Instead let's fall back to the next best stategy: try to reduce the number of packs anyway, but keep the base pack out. This reduces the number of packs to two and hopefully won't take up too much resources to repack (the assumption still is the base pack takes most resources to handle). Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Nguyễn Thái Ngọc Duy | 55dfe13df9 |
gc: add gc.bigPackThreshold config
The --keep-largest-pack option is not very convenient to use because you need to tell gc to do this explicitly (and probably on just a few large repos). Add a config key that enables this mode when packs larger than a limit are found. Note that there's a slight behavior difference compared to --keep-largest-pack: all packs larger than the threshold are kept, not just the largest one. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Nguyễn Thái Ngọc Duy | ae4e89e549 |
gc: add --keep-largest-pack option
This adds a new repack mode that combines everything into a secondary pack, leaving the largest pack alone. This could help reduce memory pressure. On linux-2.6.git, valgrind massif reports 1.6GB heap in "pack all" case, and 535MB in "pack all except the base pack" case. We save roughly 1GB memory by excluding the base pack. This should also lower I/O because we don't have to rewrite a giant pack every time (e.g. for linux-2.6.git that's a 1.4GB pack file).. PS. The use of string_list here seems overkill, but we'll need it in the next patch... Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Nguyễn Thái Ngọc Duy | 464416a2ea |
packfile: keep prepare_packed_git() private
The reason callers have to call this is to make sure either packed_git or packed_git_mru pointers are initialized since we don't do that by default. Sometimes it's hard to see this connection between where the function is called and where packed_git pointer is used (sometimes in separate functions). Keep this dependency internal because now all access to packed_git and packed_git_mru must go through get_xxx() wrappers. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Stefan Beller | a49d283435 |
packfile: add repository argument to reprepare_packed_git
See previous patch for explanation. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Stefan Beller | 6fdb4e9f5a |
packfile: add repository argument to prepare_packed_git
Add a repository argument to allow prepare_packed_git callers to be more specific about which repository to handle. See commit "sha1_file: add repository argument to link_alt_odb_entry" for an explanation of the #define trick. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Stefan Beller | a80d72db2a |
object-store: move packed_git and packed_git_mru to object store
In a process with multiple repositories open, packfile accessors should be associated to a single repository and not shared globally. Move packed_git and packed_git_mru into the_repository and adjust callers to reflect this. [nd: while at there, wrap access to these two fields in get_packed_git() and get_packed_git_mru(). This allows us to lazily initialize these fields without caller doing that explicitly] Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Nguyễn Thái Ngọc Duy | 7e1eeaa431 |
completion: use __gitcomp_builtin in _git_gc
The new completable option is --quiet. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Jonathan Tan | 0c16cd499d |
gc: do not repack promisor packfiles
Teach gc to stop traversal at promisor objects, and to leave promisor packfiles alone. This has the effect of only repacking non-promisor packfiles, and preserves the distinction between promisor packfiles and non-promisor packfiles. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Junio C Hamano | afe2fab72c |
gc: call fscanf() with %<len>s, not %<len>c, when reading hostname
Earlier in this codepath, we (ab)used "%<len>c" to read the hostname recorded in the lockfile into locking_host[HOST_NAME_MAX + 1] while substituting <len> with the actual value of HOST_NAME_MAX. This turns out to be incorrect, as it is an instruction to read exactly the specified number of bytes. Because we are trying to read at most that many bytes, we should be using "%<len>s" instead. Helped-by: A. Wilcox <awilfox@adelielinux.org> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Jeff King | 076aa2cbda |
tempfile: auto-allocate tempfiles on heap
The previous commit taught the tempfile code to give up ownership over tempfiles that have been renamed or deleted. That makes it possible to use a stack variable like this: struct tempfile t; create_tempfile(&t, ...); ... if (!err) rename_tempfile(&t, ...); else delete_tempfile(&t); But doing it this way has a high potential for creating memory errors. The tempfile we pass to create_tempfile() ends up on a global linked list, and it's not safe for it to go out of scope until we've called one of those two deactivation functions. Imagine that we add an early return from the function that forgets to call delete_tempfile(). With a static or heap tempfile variable, the worst case is that the tempfile hangs around until the program exits (and some functions like setup_shallow_temporary rely on this intentionally, creating a tempfile and then leaving it for later cleanup). But with a stack variable as above, this is a serious memory error: the variable goes out of scope and may be filled with garbage by the time the tempfile code looks at it. Let's see if we can make it harder to get this wrong. Since many callers need to allocate arbitrary numbers of tempfiles, we can't rely on static storage as a general solution. So we need to turn to the heap. We could just ask all callers to pass us a heap variable, but that puts the burden on them to call free() at the right time. Instead, let's have the tempfile code handle the heap allocation _and_ the deallocation (when the tempfile is deactivated and removed from the list). This changes the return value of all of the creation functions. For the cleanup functions (delete and rename), we'll add one extra bit of safety: instead of taking a tempfile pointer, we'll take a pointer-to-pointer and set it to NULL after freeing the object. This makes it safe to double-call functions like delete_tempfile(), as the second call treats the NULL input as a noop. Several callsites follow this pattern. The resulting patch does have a fair bit of noise, as each caller needs to be converted to handle: 1. Storing a pointer instead of the struct itself. 2. Passing the pointer instead of taking the struct address. 3. Handling a "struct tempfile *" return instead of a file descriptor. We could play games to make this less noisy. For example, by defining the tempfile like this: struct tempfile { struct heap_allocated_part_of_tempfile { int fd; ...etc } *actual_data; } Callers would continue to have a "struct tempfile", and it would be "active" only when the inner pointer was non-NULL. But that just makes things more awkward in the long run. There aren't that many callers, so we can simply bite the bullet and adjust all of them. And the compiler makes it easy for us to find them all. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Jonathan Tan | 0abe14f6a5 |
pack: move {,re}prepare_packed_git and approximate_object_count
Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
7 years ago |
Jeff King | c45af94dbc |
gc: run pre-detach operations under lock
We normally try to avoid having two auto-gc operations run at the same time, because it wastes resources. This was done long ago in |
8 years ago |
René Scharfe | 42c78a216e |
use DIV_ROUND_UP
Convert code that divides and rounds up to use DIV_ROUND_UP to make the intent clearer and reduce the number of magic constants. Signed-off-by: Rene Scharfe <l.s.r@web.de> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
8 years ago |
Brandon Williams | b2141fc1d2 |
config: don't include config.h by default
Stop including config.h by default in cache.h. Instead only include config.h in those files which require use of the config system. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
8 years ago |
Johannes Schindelin | dddbad728c |
timestamp_t: a new data type for timestamps
Git's source code assumes that unsigned long is at least as precise as time_t. Which is incorrect, and causes a lot of problems, in particular where unsigned long is only 32-bit (notably on Windows, even in 64-bit versions). So let's just use a more appropriate data type instead. In preparation for this, we introduce the new `timestamp_t` data type. By necessity, this is a very, very large patch, as it has to replace all timestamps' data type in one go. As we will use a data type that is not necessarily identical to `time_t`, we need to be very careful to use `time_t` whenever we interact with the system functions, and `timestamp_t` everywhere else. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
8 years ago |
David Turner | 5781a9a270 |
xgethostname: handle long hostnames
If the full hostname doesn't fit in the buffer supplied to gethostname, POSIX does not specify whether the buffer will be null-terminated, so to be safe, we should do it ourselves. Introduce new function, xgethostname, which ensures that there is always a \0 at the end of the buffer. Signed-off-by: David Turner <dturner@twosigma.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
8 years ago |
René Scharfe | da25bdb776 |
use HOST_NAME_MAX to size buffers for gethostname(2)
POSIX limits the length of host names to HOST_NAME_MAX. Export the fallback definition from daemon.c and use this constant to make all buffers used with gethostname(2) big enough for any possible result and a terminating NUL. Inspired-by: David Turner <dturner@twosigma.com> Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: David Turner <dturner@twosigma.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
8 years ago |
Jeff King | 07af889136 |
gc: replace local buffer with git_path
We probe the "17/" loose object directory for auto-gc, and use a local buffer to format the path. We can just use git_path() for this. It handles paths of any length (reducing our error handling). And because we feed the result straight to a system call, we can just use the static variant. Note that git_path also knows the string "objects/" is special, and will replace it with git_object_directory() when necessary. Another alternative would be to use sha1_file_name() for the pretend object "170000...", but that ends up being more hassle for no gain, as we have to truncate the final path component. Signed-off-by: Jeff King <peff@peff.net> |
8 years ago |