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2018-11-02Merge branch 'pk/rebase-in-c-4-opts'Libravatar Junio C Hamano1-0/+82
Rewrite "git rebase" in C. * pk/rebase-in-c-4-opts: builtin rebase: support --root builtin rebase: add support for custom merge strategies builtin rebase: support `fork-point` option merge-base --fork-point: extract libified function builtin rebase: support --rebase-merges[=[no-]rebase-cousins] builtin rebase: support `--allow-empty-message` option builtin rebase: support `--exec` builtin rebase: support `--autostash` option builtin rebase: support `-C` and `--whitespace=<type>` builtin rebase: support `--gpg-sign` option builtin rebase: support `--autosquash` builtin rebase: support `keep-empty` option builtin rebase: support `ignore-date` option builtin rebase: support `ignore-whitespace` option builtin rebase: support --committer-date-is-author-date builtin rebase: support --rerere-autoupdate builtin rebase: support --signoff builtin rebase: allow selecting the rebase "backend"
2018-10-16Merge branch 'ds/commit-graph-with-grafts'Libravatar Junio C Hamano1-1/+1
The recently introduced commit-graph auxiliary data is incompatible with mechanisms such as replace & grafts that "breaks" immutable nature of the object reference relationship. Disable optimizations based on its use (and updating existing commit-graph) when these incompatible features are in use in the repository. * ds/commit-graph-with-grafts: commit-graph: close_commit_graph before shallow walk commit-graph: not compatible with uninitialized repo commit-graph: not compatible with grafts commit-graph: not compatible with replace objects test-repository: properly init repo commit-graph: update design document refs.c: upgrade for_each_replace_ref to be a each_repo_ref_fn callback refs.c: migrate internal ref iteration to pass thru repository argument
2018-10-11merge-base --fork-point: extract libified functionLibravatar Pratik Karki1-0/+81
We need this functionality in the builtin rebase. Note: to make this function truly reusable, we have to switch the call get_merges_many_dirty() to get_merges_many() because we want the commit flags to be reset (otherwise, subsequent get_merge_bases() calls would obtain incorrect results). This did not matter when the function was called in `git rev-parse --fork-point` because in that command, the process definitely did not traverse any commits before exiting. Signed-off-by: Pratik Karki <predatoramigo@gmail.com> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-17Merge branch 'jk/cocci'Libravatar Junio C Hamano1-1/+1
spatch transformation to replace boolean uses of !hashcmp() to newly introduced oideq() is added, and applied, to regain performance lost due to support of multiple hash algorithms. * jk/cocci: show_dirstat: simplify same-content check read-cache: use oideq() in ce_compare functions convert hashmap comparison functions to oideq() convert "hashcmp() != 0" to "!hasheq()" convert "oidcmp() != 0" to "!oideq()" convert "hashcmp() == 0" to hasheq() convert "oidcmp() == 0" to oideq() introduce hasheq() and oideq() coccinelle: use <...> for function exclusion
2018-09-17Merge branch 'jk/trailer-fixes'Libravatar Junio C Hamano1-3/+3
"git interpret-trailers" and its underlying machinery had a buggy code that attempted to ignore patch text after commit log message, which triggered in various codepaths that will always get the log message alone and never get such an input. * jk/trailer-fixes: append_signoff: use size_t for string offsets sequencer: ignore "---" divider when parsing trailers pretty, ref-filter: format %(trailers) with no_divider option interpret-trailers: allow suppressing "---" divider interpret-trailers: tighten check for "---" patch boundary trailer: pass process_trailer_opts to trailer_info_get() trailer: use size_t for iterating trailer list trailer: use size_t for string offsets
2018-09-17Merge branch 'ds/reachable'Libravatar Junio C Hamano1-361/+0
The code for computing history reachability has been shuffled, obtained a bunch of new tests to cover them, and then being improved. * ds/reachable: commit-reach: correct accidental #include of C file commit-reach: use can_all_from_reach commit-reach: make can_all_from_reach... linear commit-reach: replace ref_newer logic test-reach: test commit_contains test-reach: test can_all_from_reach_with_flags test-reach: test reduce_heads test-reach: test get_merge_bases_many test-reach: test is_descendant_of test-reach: test in_merge_bases test-reach: create new test tool for ref_newer commit-reach: move can_all_from_reach_with_flags upload-pack: generalize commit date cutoff upload-pack: refactor ok_to_give_up() upload-pack: make reachable() more generic commit-reach: move commit_contains from ref-filter commit-reach: move ref_newer from remote.c commit.h: remove method declarations commit-reach: move walk methods from commit.c
2018-09-04Merge branch 'ds/commit-graph-lockfile-fix'Libravatar Junio C Hamano1-1/+4
"git merge-base" in 2.19-rc1 has performance regression when the (experimental) commit-graph feature is in use, which has been mitigated. * ds/commit-graph-lockfile-fix: commit: don't use generation numbers if not needed
2018-08-30commit: don't use generation numbers if not neededLibravatar Derrick Stolee1-1/+4
In 3afc679b "commit: use generations in paint_down_to_common()", the queue in paint_down_to_common() was changed to use a priority order based on generation number before commit date. This served two purposes: 1. When generation numbers are present, the walk guarantees correct topological relationships, regardless of clock skew in commit dates. 2. It enables short-circuiting the walk when the min_generation parameter is added in d7c1ec3e "commit: add short-circuit to paint_down_to_common()". This short-circuit helps commands like 'git branch --contains' from needing to walk to a merge base when we know the result is false. The commit message for 3afc679b includes the following sentence: This change does not affect the number of commits that are walked during the execution of paint_down_to_common(), only the order that those commits are inspected. This statement is incorrect. Because it changes the order in which the commits are inspected, it changes the order they are added to the queue, and hence can change the number of loops before the queue_has_nonstale() method returns true. This change makes a concrete difference depending on the topology of the commit graph. For instance, computing the merge-base between consecutive versions of the Linux kernel has no effect for versions after v4.9, but 'git merge-base v4.8 v4.9' presents a performance regression: v2.18.0: 0.122s v2.19.0-rc1: 0.547s HEAD: 0.127s To determine that this was simply an ordering issue, I inserted a counter within the while loop of paint_down_to_common() and found that the loop runs 167,468 times in v2.18.0 and 635,579 times in v2.19.0-rc1. The topology of this case can be described in a simplified way here: v4.9 | \ | \ v4.8 \ | \ \ | \ | ... A B | / / | / / |/__/ C Here, the "..." means "a very long line of commits". By generation number, A and B have generation one more than C. However, A and B have commit date higher than most of the commits reachable from v4.8. When the walk reaches v4.8, we realize that it has PARENT1 and PARENT2 flags, so everything it can reach is marked as STALE, including A. B has only the PARENT1 flag, so is not STALE. When paint_down_to_common() is run using compare_commits_by_commit_date, A and B are removed from the queue early and C is inserted into the queue. At this point, C and the rest of the queue entries are marked as STALE. The loop then terminates. When paint_down_to_common() is run using compare_commits_by_gen_then_commit_date, B is removed from the queue only after the many commits reachable from v4.8 are explored. This causes the loop to run longer. The reason for this regression is simple: the queue order is intended to not explore a commit until everything that _could_ reach that commit is explored. From the information gathered by the original ordering, we have no guarantee that there is not a commit D reachable from v4.8 that can also reach B. We gained absolute correctness in exchange for a performance regression. The performance regression is probably the worse option, since these incorrect results in paint_down_to_common() are rare. The topology required for the performance regression are less rare, but still require multiple merge commits where the parents differ greatly in generation number. In our example above, the commit A is as important as the commit B to demonstrate the problem, since otherwise the commit C will sit in the queue as non-stale just as long in both orders. The solution provided uses the min_generation parameter to decide if we should use generation numbers in our ordering. When min_generation is equal to zero, it means that the caller has no known cutoff for the walk, so we should rely on our commit-date heuristic as before; this is the case with merge_bases_many(). When min_generation is non-zero, then the caller knows a valuable cutoff for the short-circuit mechanism; this is the case with remove_redundant() and in_merge_bases_many(). Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-29convert "oidcmp() != 0" to "!oideq()"Libravatar Jeff King1-1/+1
This is the flip side of the previous two patches: checking for a non-zero oidcmp() can be more strictly expressed as inequality. Like those patches, we write "!= 0" in the coccinelle transformation, which covers by isomorphism the more common: if (oidcmp(E1, E2)) As with the previous two patches, this patch can be achieved almost entirely by running "make coccicheck"; the only differences are manual line-wrap fixes to match the original code. There is one thing to note for anybody replicating this, though: coccinelle 1.0.4 seems to miss the case in builtin/tag.c, even though it's basically the same as all the others. Running with 1.0.7 does catch this, so presumably it's just a coccinelle bug that was fixed in the interim. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-27Merge branch 'js/larger-timestamps'Libravatar Junio C Hamano1-1/+1
Portability fix. * js/larger-timestamps: commit: use timestamp_t for author_date_slab
2018-08-23append_signoff: use size_t for string offsetsLibravatar Jeff King1-3/+3
The append_signoff() function takes an "int" to specify the number of bytes to ignore. Most callers just pass 0, and the remainder use ignore_non_trailer() to skip over cruft. That function also returns an int, and uses them internally. On systems where size_t is larger than an int (i.e., most 64-bit systems), dealing with a ridiculously large commit message could end up overflowing an int, producing surprising results (e.g., returning a negative offset, which would cause us to look outside the original string). Let's consistently use size_t for these offsets through this whole stack. As a bonus, this makes the meaning of "ignore_footer" as an offset (and not a boolean) more clear. But while we're here, let's also document the interface. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-21commit: use timestamp_t for author_date_slabLibravatar Derrick Stolee1-1/+1
The author_date_slab is used to store the author date of a commit when walking with the --author-date flag in rev-list or log. This was added as an 'unsigned long' in 81c6b38b "log: --author-date-order" Since 'unsigned long' is ambiguous in its bit-ness across platforms (64-bit in Linux, 32-bit in Windows, for example), most references to the author dates in commit.c were converted to timestamp_t in dddbad72 "timestamp_t: a new data type for timestamps" However, the slab definition was missed, leading to a mismatch in the data types in Windows. This would not reveal itself as a bug unless someone authors a commit after February 2106, but commits can store anything as their author date. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-21commit-graph: not compatible with graftsLibravatar Derrick Stolee1-1/+1
Augment commit_graph_compatible(r) to return false when the given repository r has commit grafts or is a shallow clone. Test that in these situations we ignore existing commit-graph files and we do not write new commit-graph files. Helped-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-02Merge branch 'jt/commit-graph-per-object-store'Libravatar Junio C Hamano1-3/+3
The singleton commit-graph in-core instance is made per in-core repository instance. * jt/commit-graph-per-object-store: commit-graph: add repo arg to graph readers commit-graph: store graph in struct object_store commit-graph: add free_commit_graph commit-graph: add missing forward declaration object-store: add missing include commit-graph: refactor preparing commit graph
2018-08-02Merge branch 'sb/object-store-lookup'Libravatar Junio C Hamano1-30/+50
lookup_commit_reference() and friends have been updated to find in-core object for a specific in-core repository instance. * sb/object-store-lookup: (32 commits) commit.c: allow lookup_commit_reference to handle arbitrary repositories commit.c: allow lookup_commit_reference_gently to handle arbitrary repositories tag.c: allow deref_tag to handle arbitrary repositories object.c: allow parse_object to handle arbitrary repositories object.c: allow parse_object_buffer to handle arbitrary repositories commit.c: allow get_cached_commit_buffer to handle arbitrary repositories commit.c: allow set_commit_buffer to handle arbitrary repositories commit.c: migrate the commit buffer to the parsed object store commit-slabs: remove realloc counter outside of slab struct commit.c: allow parse_commit_buffer to handle arbitrary repositories tag: allow parse_tag_buffer to handle arbitrary repositories tag: allow lookup_tag to handle arbitrary repositories commit: allow lookup_commit to handle arbitrary repositories tree: allow lookup_tree to handle arbitrary repositories blob: allow lookup_blob to handle arbitrary repositories object: allow lookup_object to handle arbitrary repositories object: allow object_as_type to handle arbitrary repositories tag: add repository argument to deref_tag tag: add repository argument to parse_tag_buffer tag: add repository argument to lookup_tag ...
2018-08-02Merge branch 'ds/commit-graph-fsck'Libravatar Junio C Hamano1-2/+8
"git fsck" learns to make sure the optional commit-graph file is in a sane state. * ds/commit-graph-fsck: (23 commits) coccinelle: update commit.cocci commit-graph: update design document gc: automatically write commit-graph files commit-graph: add '--reachable' option commit-graph: use string-list API for input fsck: verify commit-graph commit-graph: verify contents match checksum commit-graph: test for corrupted octopus edge commit-graph: verify commit date commit-graph: verify generation number commit-graph: verify parent list commit-graph: verify root tree OIDs commit-graph: verify objects exist commit-graph: verify corrupt OID fanout and lookup commit-graph: verify required chunks are present commit-graph: verify catches corrupt signature commit-graph: add 'verify' subcommand commit-graph: load a root tree from specific graph commit: force commit to parse from object database commit-graph: parse commit from chosen graph ...
2018-08-02Merge branch 'bc/object-id'Libravatar Junio C Hamano1-2/+2
Conversion from uchar[40] to struct object_id continues. * bc/object-id: pretty: switch hard-coded constants to the_hash_algo sha1-file: convert constants to uses of the_hash_algo log-tree: switch GIT_SHA1_HEXSZ to the_hash_algo->hexsz diff: switch GIT_SHA1_HEXSZ to use the_hash_algo builtin/merge-recursive: make hash independent builtin/merge: switch to use the_hash_algo builtin/fmt-merge-msg: make hash independent builtin/update-index: simplify parsing of cacheinfo builtin/update-index: convert to using the_hash_algo refs/files-backend: use the_hash_algo for writing refs sha1-name: use the_hash_algo when parsing object names strbuf: allocate space with GIT_MAX_HEXSZ commit: express tree entry constants in terms of the_hash_algo hex: switch to using the_hash_algo tree-walk: replace hard-coded constants with the_hash_algo cache: update object ID functions for the_hash_algo
2018-07-20commit-reach: move walk methods from commit.cLibravatar Derrick Stolee1-358/+0
There are several commit walks in the codebase. Group them together into a new commit-reach.c file and corresponding header. After we group these walks into one place, we can reduce duplicate logic by calling equivalent methods. The method declarations in commit.h are not touched by this commit and will be moved in a following commit. Many consumers need to point to commit-reach.h and that would bloat this commit. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-18Merge branch 'sb/object-store-grafts'Libravatar Junio C Hamano1-36/+41
The conversion to pass "the_repository" and then "a_repository" throughout the object access API continues. * sb/object-store-grafts: commit: allow lookup_commit_graft to handle arbitrary repositories commit: allow prepare_commit_graft to handle arbitrary repositories shallow: migrate shallow information into the object parser path.c: migrate global git_path_* to take a repository argument cache: convert get_graft_file to handle arbitrary repositories commit: convert read_graft_file to handle arbitrary repositories commit: convert register_commit_graft to handle arbitrary repositories commit: convert commit_graft_pos() to handle arbitrary repositories shallow: add repository argument to is_repository_shallow shallow: add repository argument to check_shallow_file_for_update shallow: add repository argument to register_shallow shallow: add repository argument to set_alternate_shallow_file commit: add repository argument to lookup_commit_graft commit: add repository argument to prepare_commit_graft commit: add repository argument to read_graft_file commit: add repository argument to register_commit_graft commit: add repository argument to commit_graft_pos object: move grafts to object parser object-store: move object access functions to object-store.h
2018-07-17commit-graph: add repo arg to graph readersLibravatar Jonathan Tan1-3/+3
Add a struct repository argument to the functions in commit-graph.h that read the commit graph. (This commit does not affect functions that write commit graphs.) Because the commit graph functions can now read the commit graph of any repository, the global variable core_commit_graph has been removed. Instead, the config option core.commitGraph is now read on the first time in a repository that a commit is attempted to be parsed using its commit graph. This commit includes a test that exercises the functionality on an arbitrary repository that is not the_repository. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-17Merge branch 'ds/commit-graph-fsck' into jt/commit-graph-per-object-storeLibravatar Junio C Hamano1-2/+8
* ds/commit-graph-fsck: (23 commits) coccinelle: update commit.cocci commit-graph: update design document gc: automatically write commit-graph files commit-graph: add '--reachable' option commit-graph: use string-list API for input fsck: verify commit-graph commit-graph: verify contents match checksum commit-graph: test for corrupted octopus edge commit-graph: verify commit date commit-graph: verify generation number commit-graph: verify parent list commit-graph: verify root tree OIDs commit-graph: verify objects exist commit-graph: verify corrupt OID fanout and lookup commit-graph: verify required chunks are present commit-graph: verify catches corrupt signature commit-graph: add 'verify' subcommand commit-graph: load a root tree from specific graph commit: force commit to parse from object database commit-graph: parse commit from chosen graph ...
2018-07-16commit: express tree entry constants in terms of the_hash_algoLibravatar brian m. carlson1-2/+2
Specify these constants in terms of the size of the hash algorithm currently in use. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit.c: allow lookup_commit_reference to handle arbitrary repositoriesLibravatar Stefan Beller1-2/+2
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit.c: allow lookup_commit_reference_gently to handle arbitrary repositoriesLibravatar Stefan Beller1-4/+4
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit.c: allow get_cached_commit_buffer to handle arbitrary repositoriesLibravatar Stefan Beller1-2/+2
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit.c: allow set_commit_buffer to handle arbitrary repositoriesLibravatar Stefan Beller1-2/+2
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit.c: migrate the commit buffer to the parsed object storeLibravatar Stefan Beller1-6/+23
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit.c: allow parse_commit_buffer to handle arbitrary repositoriesLibravatar Stefan Beller1-5/+5
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit: allow lookup_commit to handle arbitrary repositoriesLibravatar Stefan Beller1-5/+5
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29tag: add repository argument to deref_tagLibravatar Stefan Beller1-1/+2
Add a repository argument to allow the callers of deref_tag to be more specific about which repository to act on. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit: add repository argument to get_cached_commit_bufferLibravatar Stefan Beller1-2/+2
Add a repository argument to allow callers of get_cached_commit_buffer to be more specific about which repository to handle. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit: add repository argument to set_commit_bufferLibravatar Stefan Beller1-2/+2
Add a repository argument to allow callers of set_commit_buffer to be more specific about which repository to handle. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit: add repository argument to parse_commit_bufferLibravatar Stefan Beller1-2/+2
Add a repository argument to allow the callers of parse_commit_buffer to be more specific about which repository to act on. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit: add repository argument to lookup_commitLibravatar Stefan Beller1-3/+4
Add a repository argument to allow callers of lookup_commit to be more specific about which repository to handle. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit: add repository argument to lookup_commit_referenceLibravatar Stefan Beller1-3/+3
Add a repository argument to allow callers of lookup_commit_reference to be more specific about which repository to handle. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit: add repository argument to lookup_commit_reference_gentlyLibravatar Stefan Beller1-3/+3
Add a repository argument to allow callers of lookup_commit_reference_gently to be more specific about which repository to handle. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29tree: add repository argument to lookup_treeLibravatar Stefan Beller1-1/+1
Add a repository argument to allow the callers of lookup_tree to be more specific about which repository to act on. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29object: add repository argument to object_as_typeLibravatar Stefan Beller1-2/+2
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29object: add repository argument to lookup_objectLibravatar Stefan Beller1-1/+1
Add a repository argument to allow callers of lookup_object to be more specific about which repository to handle. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29object: add repository argument to parse_objectLibravatar Stefan Beller1-2/+3
Add a repository argument to allow the callers of parse_object to be more specific about which repository to act on. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29Merge branch 'sb/object-store-grafts' into sb/object-store-lookupLibravatar Junio C Hamano1-36/+41
* sb/object-store-grafts: commit: allow lookup_commit_graft to handle arbitrary repositories commit: allow prepare_commit_graft to handle arbitrary repositories shallow: migrate shallow information into the object parser path.c: migrate global git_path_* to take a repository argument cache: convert get_graft_file to handle arbitrary repositories commit: convert read_graft_file to handle arbitrary repositories commit: convert register_commit_graft to handle arbitrary repositories commit: convert commit_graft_pos() to handle arbitrary repositories shallow: add repository argument to is_repository_shallow shallow: add repository argument to check_shallow_file_for_update shallow: add repository argument to register_shallow shallow: add repository argument to set_alternate_shallow_file commit: add repository argument to lookup_commit_graft commit: add repository argument to prepare_commit_graft commit: add repository argument to read_graft_file commit: add repository argument to register_commit_graft commit: add repository argument to commit_graft_pos object: move grafts to object parser object-store: move object access functions to object-store.h
2018-06-27commit: force commit to parse from object databaseLibravatar Derrick Stolee1-2/+8
In anticipation of verifying commit-graph file contents against the object database, create parse_commit_internal() to allow side-stepping the commit-graph file and parse directly from the object database. Due to the use of generation numbers, this method should not be called unless the intention is explicit in avoiding commits from the commit-graph file. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-25Merge branch 'sb/object-store-alloc'Libravatar Junio C Hamano1-1/+14
The conversion to pass "the_repository" and then "a_repository" throughout the object access API continues. * sb/object-store-alloc: alloc: allow arbitrary repositories for alloc functions object: allow create_object to handle arbitrary repositories object: allow grow_object_hash to handle arbitrary repositories alloc: add repository argument to alloc_commit_index alloc: add repository argument to alloc_report alloc: add repository argument to alloc_object_node alloc: add repository argument to alloc_tag_node alloc: add repository argument to alloc_commit_node alloc: add repository argument to alloc_tree_node alloc: add repository argument to alloc_blob_node object: add repository argument to grow_object_hash object: add repository argument to create_object repository: introduce parsed objects field
2018-06-25Merge branch 'ds/commit-graph-lockfile-fix'Libravatar Junio C Hamano1-8/+53
Update to ds/generation-numbers topic. * ds/commit-graph-lockfile-fix: commit-graph: fix UX issue when .lock file exists commit-graph.txt: update design document merge: check config before loading commits commit: use generation number in remove_redundant() commit: add short-circuit to paint_down_to_common() commit: use generation numbers for in_merge_bases() ref-filter: use generation number for --contains commit-graph: always load commit-graph information commit: use generations in paint_down_to_common() commit-graph: compute generation numbers commit: add generation number to struct commit ref-filter: fix outdated comment on in_commit_list
2018-06-25Merge branch 'nd/commit-util-to-slab'Libravatar Junio C Hamano1-2/+10
The in-core "commit" object had an all-purpose "void *util" field, which was tricky to use especially in library-ish part of the code. All of the existing uses of the field has been migrated to a more dedicated "commit-slab" mechanism and the field is eliminated. * nd/commit-util-to-slab: commit.h: delete 'util' field in struct commit merge: use commit-slab in merge remote desc instead of commit->util log: use commit-slab in prepare_bases() instead of commit->util show-branch: note about its object flags usage show-branch: use commit-slab for commit-name instead of commit->util name-rev: use commit-slab for rev-name instead of commit->util bisect.c: use commit-slab for commit weight instead of commit->util revision.c: use commit-slab for show_source sequencer.c: use commit-slab to associate todo items to commits sequencer.c: use commit-slab to mark seen commits shallow.c: use commit-slab for commit depth instead of commit->util describe: use commit-slab for commit names instead of commit->util blame: use commit-slab for blame suspects instead of commit->util commit-slab: support shared commit-slab commit-slab.h: code split
2018-06-13Merge branch 'jk/index-pack-maint'Libravatar Junio C Hamano1-0/+3
"index-pack --strict" has been taught to make sure that it runs the final object integrity checks after making the freshly indexed packfile available to itself. * jk/index-pack-maint: index-pack: correct install_packed_git() args index-pack: handle --strict checks of non-repo packs prepare_commit_graft: treat non-repository as a noop
2018-06-01prepare_commit_graft: treat non-repository as a noopLibravatar Jeff King1-0/+3
The parse_commit_buffer() function consults lookup_commit_graft() to see if we need to rewrite parents. The latter will look at $GIT_DIR/info/grafts. If you're outside of a repository, then this will trigger a BUG() as of b1ef400eec (setup_git_env: avoid blind fall-back to ".git", 2016-10-20). It's probably uncommon to actually parse a commit outside of a repository, but you can see it in action with: cd /not/a/git/repo git index-pack --strict /some/file.pack This works fine without --strict, but the fsck checks will try to parse any commits, triggering the BUG(). We can fix that by teaching the graft code to behave as if there are no grafts when we aren't in a repository. Arguably index-pack (and fsck) are wrong to consider grafts at all. So another solution is to disable grafts entirely for those commands. But given that the graft feature is deprecated anyway, it's not worth even thinking through the ramifications that might have. There is one other corner case I considered here. What should: cd /not/a/git/repo export GIT_GRAFT_FILE=/file/with/grafts git index-pack --strict /some/file.pack do? We don't have a repository, but the user has pointed us directly at a graft file, which we could respect. I believe this case did work that way prior to b1ef400eec. However, fixing it now would be pretty invasive. Back then we would just call into setup_git_env() even without a repository. But these days it actually takes a git_dir argument. So there would be a fair bit of refactoring of the setup code involved. Given the obscurity of this case, plus the fact that grafts are deprecated and probably shouldn't work under index-pack anyway, it's not worth pursuing further. This patch at least un-breaks the common case where you're _not_ using grafts, but we BUG() anyway trying to even find that out. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-30Merge branch 'bc/object-id'Libravatar Junio C Hamano1-2/+2
Conversion from uchar[20] to struct object_id continues. * bc/object-id: (42 commits) merge-one-file: compute empty blob object ID add--interactive: compute the empty tree value Update shell scripts to compute empty tree object ID sha1_file: only expose empty object constants through git_hash_algo dir: use the_hash_algo for empty blob object ID sequencer: use the_hash_algo for empty tree object ID cache-tree: use is_empty_tree_oid sha1_file: convert cached object code to struct object_id builtin/reset: convert use of EMPTY_TREE_SHA1_BIN builtin/receive-pack: convert one use of EMPTY_TREE_SHA1_HEX wt-status: convert two uses of EMPTY_TREE_SHA1_HEX submodule: convert several uses of EMPTY_TREE_SHA1_HEX sequencer: convert one use of EMPTY_TREE_SHA1_HEX merge: convert empty tree constant to the_hash_algo builtin/merge: switch tree functions to use object_id builtin/am: convert uses of EMPTY_TREE_SHA1_BIN to the_hash_algo sha1-file: add functions for hex empty tree and blob OIDs builtin/receive-pack: avoid hard-coded constants for push certs diff: specify abbreviation size in terms of the_hash_algo upload-pack: replace use of several hard-coded constants ...
2018-05-23Merge branch 'js/deprecate-grafts'Libravatar Junio C Hamano1-3/+15
The functionality of "$GIT_DIR/info/grafts" has been superseded by the "refs/replace/" mechanism for some time now, but the internal code had support for it in many places, which has been cleaned up in order to drop support of the "grafts" mechanism. * js/deprecate-grafts: Remove obsolete script to convert grafts to replace refs technical/shallow: describe why shallow cannot use replace refs technical/shallow: stop referring to grafts filter-branch: stop suggesting to use grafts Deprecate support for .git/info/grafts Add a test for `git replace --convert-graft-file` replace: introduce --convert-graft-file replace: prepare create_graft() for converting graft files wholesale replace: "libify" create_graft() and callees replace: avoid using die() to indicate a bug commit: Let the callback of for_each_mergetag return on error argv_array: offer to split a string by whitespace
2018-05-23Merge branch 'ds/lazy-load-trees'Libravatar Junio C Hamano1-1/+17
The code has been taught to use the duplicated information stored in the commit-graph file to learn the tree object name for a commit to avoid opening and parsing the commit object when it makes sense to do so. * ds/lazy-load-trees: coccinelle: avoid wrong transformation suggestions from commit.cocci commit-graph: lazy-load trees for commits treewide: replace maybe_tree with accessor methods commit: create get_commit_tree() method treewide: rename tree to maybe_tree