- 11 4月, 2018 11 次提交
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由 Derrick Stolee 提交于
In anticipation of making trees load lazily, create a Coccinelle script (contrib/coccinelle/commit.cocci) to ensure that all references to the 'maybe_tree' member of struct commit are either mutations or accesses through get_commit_tree() or get_commit_tree_oid(). Apply the Coccinelle script to create the rest of the patch. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
While walking the commit graph, we load struct commit objects into the object cache. During this process, we also load struct tree objects for the root tree of each of these commits. We load these objects even if we are only computing commit reachability information, such as a merge base or ahead/behind information. Create get_commit_tree() as a first step to removing direct references to the 'maybe_tree' member of struct commit. Create get_commit_tree_oid() as a shortcut for several references to "&commit->maybe_tree->object.oid" in the codebase. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
Using the commit-graph file to walk commit history removes the large cost of parsing commits during the walk. This exposes a performance issue: lookup_tree() takes a large portion of the computation time, even when Git never uses those trees. In anticipation of lazy-loading these trees, rename the 'tree' member of struct commit to 'maybe_tree'. This serves two purposes: it hints at the future role of possibly being NULL even if the commit has a valid tree, and it allows for unambiguous transformation from simple member access (i.e. commit->maybe_tree) to method access. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Junio C Hamano 提交于
* bw/c-plus-plus: (37 commits) replace: rename 'new' variables trailer: rename 'template' variables tempfile: rename 'template' variables wrapper: rename 'template' variables environment: rename 'namespace' variables diff: rename 'template' variables environment: rename 'template' variables init-db: rename 'template' variables unpack-trees: rename 'new' variables trailer: rename 'new' variables submodule: rename 'new' variables split-index: rename 'new' variables remote: rename 'new' variables ref-filter: rename 'new' variables read-cache: rename 'new' variables line-log: rename 'new' variables imap-send: rename 'new' variables http: rename 'new' variables entry: rename 'new' variables diffcore-delta: rename 'new' variables ...
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由 Derrick Stolee 提交于
Teach git-commit-graph to add all commits from the existing commit-graph file to the file about to be written. This should be used when adding new commits without performing garbage collection. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
Teach git-commit-graph to read commits from stdin when the --stdin-commits flag is specified. Commits reachable from these commits are added to the graph. This is a much faster way to construct the graph than inspecting all packed objects, but is restricted to known tips. For the Linux repository, 700,000+ commits were added to the graph file starting from 'master' in 7-9 seconds, depending on the number of packfiles in the repo (1, 24, or 120). Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
Teach git-commit-graph to inspect the objects only in a certain list of pack-indexes within the given pack directory. This allows updating the commit graph iteratively. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
Teach Git to inspect a commit graph file to supply the contents of a struct commit when calling parse_commit_gently(). This implementation satisfies all post-conditions on the struct commit, including loading parents, the root tree, and the commit date. If core.commitGraph is false, then do not check graph files. In test script t5318-commit-graph.sh, add output-matching conditions on read-only graph operations. By loading commits from the graph instead of parsing commit buffers, we save a lot of time on long commit walks. Here are some performance results for a copy of the Linux repository where 'master' has 678,653 reachable commits and is behind 'origin/master' by 59,929 commits. | Command | Before | After | Rel % | |----------------------------------|--------|--------|-------| | log --oneline --topo-order -1000 | 8.31s | 0.94s | -88% | | branch -vv | 1.02s | 0.14s | -86% | | rev-list --all | 5.89s | 1.07s | -81% | | rev-list --all --objects | 66.15s | 58.45s | -11% | Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
Teach write_commit_graph() to walk all parents from the commits discovered in packfiles. This prevents gaps given by loose objects or previously-missed packfiles. Also automatically add commits from the existing graph file, if it exists. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
The commit graph feature is controlled by the new core.commitGraph config setting. This defaults to 0, so the feature is opt-in. The intention of core.commitGraph is that a user can always stop checking for or parsing commit graph files if core.commitGraph=0. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
Teach git-commit-graph to read commit graph files and summarize their contents. Use the read subcommand to verify the contents of a commit graph file in the tests. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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- 03 4月, 2018 7 次提交
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由 Derrick Stolee 提交于
Teach git-commit-graph to write graph files. Create new test script to verify this command succeeds without failure. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
Teach Git to write a commit graph file by checking all packed objects to see if they are commits, then store the file in the given object directory. Helped-by: NJeff King <peff@peff.net> Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
Teach git the 'commit-graph' builtin that will be used for writing and reading packed graph files. The current implementation is mostly empty, except for an '--object-dir' option. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
Add Documentation/technical/commit-graph.txt with details of the planned commit graph feature, including future plans. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
Add document specifying the binary format for commit graphs. This format allows for: * New versions. * New hash functions and hash lengths. * Optional extensions. Basic header information is followed by a binary table of contents into "chunks" that include: * An ordered list of commit object IDs. * A 256-entry fanout into that list of OIDs. * A list of metadata for the commits. * A list of "large edges" to enable octopus merges. The format automatically includes two parent positions for every commit. This favors speed over space, since using only one position per commit would cause an extra level of indirection for every merge commit. (Octopus merges suffer from this indirection, but they are very rare.) Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
If we want to use a hashfile on the temporary file for a lockfile, then we need finalize_hashfile() to fully write the trailing hash but also keep the file descriptor open. Do this by adding a new CSUM_HASH_IN_STREAM flag along with a functional change that checks this flag before writing the checksum to the stream. This differs from previous behavior since it would be written if either CSUM_CLOSE or CSUM_FSYNC is provided. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Derrick Stolee 提交于
The hashclose() method behaves very differently depending on the flags parameter. In particular, the file descriptor is not always closed. Perform a simple rename of "hashclose()" to "finalize_hashfile()" in preparation for functional changes. Signed-off-by: NDerrick Stolee <dstolee@microsoft.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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- 14 3月, 2018 2 次提交
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由 Junio C Hamano 提交于
* jk/cached-commit-buffer: revision: drop --show-all option commit: drop uses of get_cached_commit_buffer() Git 2.16.2
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由 Junio C Hamano 提交于
* jt/binsearch-with-fanout: packfile: refactor hash search with fanout table packfile: remove GIT_DEBUG_LOOKUP log statements
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- 23 2月, 2018 20 次提交
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由 Jeff King 提交于
This was an undocumented debugging aid that does not seem to have come in handy in the past decade, judging from its lack of mentions on the mailing list. Let's drop it in the name of simplicity. This is morally a revert of 3131b713 (Add "--show-all" revision walker flag for debugging, 2008-02-09), but note that I did leave in the mapping of UNINTERESTING to "^" in get_revision_mark(). I don't think this would be possible to trigger with the current code, but it's the only sensible marker. We'll skip the usual deprecation period because this was explicitly a debugging aid that was never documented. Signed-off-by: NJeff King <peff@peff.net> Acked-by: NLinus Torvalds <torvalds@linux-foundation.org> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Jeff King 提交于
The "--show-all" revision option shows UNINTERESTING commits. Some of these commits may be unparsed when we try to show them (since we may or may not need to walk their parents to fulfill the request). Commit 3131b713 (Add "--show-all" revision walker flag for debugging, 2008-02-09) resolved this by just skipping pretty-printing for commits without their object contents cached, saying: Because we now end up listing commits we may not even have been parsed at all "show_log" and "show_commit" need to protect against commits that don't have a commit buffer entry. That was the easy fix to avoid the pretty-printer segfaulting, but: 1. It doesn't work for all formats. E.g., --oneline prints the oid for each such commit but not a trailing newline, leading to jumbled output. 2. It only affects some commits, depending on whether we happened to parse them or not (so if they were at the tip of an UNINTERESTING starting point, or if we happened to traverse over them, you'd see more data). 3. It unncessarily ties the decision to show the verbose header to whether the commit buffer was cached. That makes it harder to change the logic around caching (e.g., if we could traverse without actually loading the full commit objects). These days it's safe to feed such a commit to the pretty-print code. Since be5c9fb9 (logmsg_reencode: lazily load missing commit buffers, 2013-01-26), we'll load it on demand in such a case. So let's just always show the verbose headers. This does change the behavior of plumbing, but: a. The --show-all option was explicitly introduced as a debugging aid, and was never documented (and has rarely even been mentioned on the list by git devs). b. Avoiding the commits was already not deterministic due to (2) above. So the caller might have seen full headers for these commits anyway, and would need to be prepared for it. Signed-off-by: NJeff King <peff@peff.net> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Brandon Williams 提交于
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: NBrandon Williams <bmwill@google.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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