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2018-05-21revision.c: use commit-slab for show_sourceLibravatar Nguyễn Thái Ngọc Duy1-1/+4
Instead of relying on commit->util to store the source string, let the user provide a commit-slab to store the source strings in. It's done so that commit->util can be removed. See more explanation in the commit that removes commit->util. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-06Merge branch 'jk/cached-commit-buffer'Libravatar Junio C Hamano1-1/+0
Code clean-up. * jk/cached-commit-buffer: revision: drop --show-all option commit: drop uses of get_cached_commit_buffer()
2018-02-22revision: drop --show-all optionLibravatar Jeff King1-1/+0
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 3131b71301 (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: Jeff King <peff@peff.net> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-15Merge branch 'rs/lose-leak-pending' into maintLibravatar Junio C Hamano1-12/+0
API clean-up around revision traversal. * rs/lose-leak-pending: commit: remove unused function clear_commit_marks_for_object_array() revision: remove the unused flag leak_pending checkout: avoid using the rev_info flag leak_pending bundle: avoid using the rev_info flag leak_pending bisect: avoid using the rev_info flag leak_pending object: add clear_commit_marks_all() ref-filter: use clear_commit_marks_many() in do_merge_filter() commit: use clear_commit_marks_many() in remove_redundant() commit: avoid allocation in clear_commit_marks_many()
2018-02-13Merge branch 'jh/fsck-promisors'Libravatar Junio C Hamano1-1/+4
In preparation for implementing narrow/partial clone, the machinery for checking object connectivity used by gc and fsck has been taught that a missing object is OK when it is referenced by a packfile specially marked as coming from trusted repository that promises to make them available on-demand and lazily. * jh/fsck-promisors: gc: do not repack promisor packfiles rev-list: support termination at promisor objects sha1_file: support lazily fetching missing objects introduce fetch-object: fetch one promisor object index-pack: refactor writing of .keep files fsck: support promisor objects as CLI argument fsck: support referenced promisor objects fsck: support refs pointing to promisor objects fsck: introduce partialclone extension extension.partialclone: introduce partial clone extension
2018-01-23Merge branch 'rs/lose-leak-pending'Libravatar Junio C Hamano1-12/+0
API clean-up around revision traversal. * rs/lose-leak-pending: commit: remove unused function clear_commit_marks_for_object_array() revision: remove the unused flag leak_pending checkout: avoid using the rev_info flag leak_pending bundle: avoid using the rev_info flag leak_pending bisect: avoid using the rev_info flag leak_pending object: add clear_commit_marks_all() ref-filter: use clear_commit_marks_many() in do_merge_filter() commit: use clear_commit_marks_many() in remove_redundant() commit: avoid allocation in clear_commit_marks_many()
2017-12-28Merge branch 'sb/describe-blob'Libravatar Junio C Hamano1-1/+2
"git describe" was taught to dig trees deeper to find a <commit-ish>:<path> that refers to a given blob object. * sb/describe-blob: builtin/describe.c: describe a blob builtin/describe.c: factor out describe_commit builtin/describe.c: print debug statements earlier builtin/describe.c: rename `oid` to avoid variable shadowing revision.h: introduce blob/tree walking in order of the commits list-objects.c: factor out traverse_trees_and_blobs t6120: fix typo in test name
2017-12-28revision: remove the unused flag leak_pendingLibravatar René Scharfe1-12/+0
Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-12format: create pretty.h fileLibravatar Olga Telezhnaya1-1/+1
Create header for pretty.c to make formatting interface more structured. This is a middle point, this file would be merged further with other files which contain formatting stuff. Signed-off-by: Olga Telezhnaia <olyatelezhnaya@gmail.com> Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-08rev-list: support termination at promisor objectsLibravatar Jonathan Tan1-1/+4
Teach rev-list to support termination of an object traversal at any object from a promisor remote (whether one that the local repo also has, or one that the local repo knows about because it has another promisor object that references it). This will be used subsequently in gc and in the connectivity check used by fetch. For efficiency, if an object is referenced by a promisor object, and is in the local repo only as a non-promisor object, object traversal will not stop there. This is to avoid building the list of promisor object references. (In list-objects.c, the case where obj is NULL in process_blob() and process_tree() do not need to be changed because those happen only when there is a conflict between the expected type and the existing object. If the object doesn't exist, an object will be synthesized, which is fine.) 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>
2017-11-16revision.h: introduce blob/tree walking in order of the commitsLibravatar Stefan Beller1-1/+2
The functionality to list tree objects in the order they were seen while traversing the commits will be used in one of the next commits, where we teach `git describe` to describe not only commits, but blobs, too. The change in list-objects.c is rather minimal as we'll be re-using the infrastructure put in place of the revision walking machinery. For example one could expect that add_pending_tree is not called, but rather commit->tree is directly passed to the tree traversal function. This however requires a lot more code than just emptying the queue containing trees after each commit. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-29Merge branch 'ma/leakplugs'Libravatar Junio C Hamano1-0/+11
Memory leaks in various codepaths have been plugged. * ma/leakplugs: pack-bitmap[-write]: use `object_array_clear()`, don't leak object_array: add and use `object_array_pop()` object_array: use `object_array_clear()`, not `free()` leak_pending: use `object_array_clear()`, not `free()` commit: fix memory leak in `reduce_heads()` builtin/commit: fix memory leak in `prepare_index()`
2017-09-24leak_pending: use `object_array_clear()`, not `free()`Libravatar Martin Ågren1-0/+11
Setting `leak_pending = 1` tells `prepare_revision_walk()` not to release the `pending` array, and makes that the caller's responsibility. See 4a43d374f (revision: add leak_pending flag, 2011-10-01) and 353f5657a (bisect: use leak_pending flag, 2011-10-01). Commit 1da1e07c8 (clean up name allocation in prepare_revision_walk, 2014-10-15) fixed a memory leak in `prepare_revision_walk()` by switching from `free()` to `object_array_clear()`. However, where we use the `leak_pending`-mechanism, we're still only calling `free()`. Use `object_array_clear()` instead. Copy some helpful comments from 353f5657a to the other callers that we update to clarify the memory responsibilities, and to highlight that the commits are not affected when we clear the array -- it is indeed correct to both tidy up the commit flags and clear the object array. Document `leak_pending` in revision.h to help future users get this right. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-08-24revision.h: new flag in struct rev_info wrt. worktree-related refsLibravatar Nguyễn Thái Ngọc Duy1-0/+1
The revision walker can walk through per-worktree refs like HEAD or SHA-1 references in the index. These currently are from the current worktree only. This new flag is added to change rev-list behavior in this regard: When single_worktree is set, only current worktree is considered. When it is not set (which is the default), all worktrees are considered. The default is chosen so because the two big components that rev-list works with are object database (entirely shared between worktrees) and refs (mostly shared). It makes sense that default behavior goes per-repo too instead of per-worktree. The flag will eventually be exposed as a rev-list argument with documents. For now it stays internal until the new behavior is fully implemented. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-08-02revision: add rev_input_given flagLibravatar Jeff King1-0/+7
Normally a caller that invokes setup_revisions() has to check rev.pending to see if anything was actually queued for the traversal. But they can't tell the difference between two cases: 1. The user gave us no tip from which to start a traversal. 2. The user tried to give us tips via --glob, --all, etc, but their patterns ended up being empty. Let's set a flag in the rev_info struct that callers can use to tell the difference. We can set this from the init_all_refs_cb() function. That's a little funny because it's not exactly about initializing the "cb" struct itself. But that function is the common setup place for doing pattern traversals that is used by --glob, --all, etc. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-22Merge branch 'sg/revision-parser-skip-prefix'Libravatar Junio C Hamano1-2/+3
Code clean-up. * sg/revision-parser-skip-prefix: revision.c: use skip_prefix() in handle_revision_pseudo_opt() revision.c: use skip_prefix() in handle_revision_opt() revision.c: stricter parsing of '--early-output' revision.c: stricter parsing of '--no-{min,max}-parents' revision.h: turn rev_info.early_output back into an unsigned int
2017-06-12revision.h: turn rev_info.early_output back into an unsigned intLibravatar SZEDER Gábor1-2/+3
rev_info.early_output started out as an unsigned int in cdcefbc97 (Add "--early-output" log flag for interactive GUI use, 2007-11-03), but later it was turned into a single bit in a bit field in cc243c3ce (show: --ignore-missing, 2011-05-18) without explanation, though the code using it still expects it to be a regular integer type and uses it as a counter. Consequently, any even number given via '--early-output=<N>', or indeed a plain '--early-output' defaulting to 100 effectively disabled the feature. Turn rev_info.early_output back into its origin unsigned int data type, making '--early-output' work again. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-29Merge branch 'bc/object-id'Libravatar Junio C Hamano1-3/+3
Conversion from uchar[20] to struct object_id continues. * bc/object-id: (53 commits) object: convert parse_object* to take struct object_id tree: convert parse_tree_indirect to struct object_id sequencer: convert do_recursive_merge to struct object_id diff-lib: convert do_diff_cache to struct object_id builtin/ls-tree: convert to struct object_id merge: convert checkout_fast_forward to struct object_id sequencer: convert fast_forward_to to struct object_id builtin/ls-files: convert overlay_tree_on_cache to object_id builtin/read-tree: convert to struct object_id sha1_name: convert internals of peel_onion to object_id upload-pack: convert remaining parse_object callers to object_id revision: convert remaining parse_object callers to object_id revision: rename add_pending_sha1 to add_pending_oid http-push: convert process_ls_object and descendants to object_id refs/files-backend: convert many internals to struct object_id refs: convert struct ref_update to use struct object_id ref-filter: convert some static functions to struct object_id Convert struct ref_array_item to struct object_id Convert the verify_pack callback to struct object_id Convert lookup_tag to struct object_id ...
2017-05-08revision: rename add_pending_sha1 to add_pending_oidLibravatar brian m. carlson1-3/+3
Rename this function and convert it to take a pointer to struct object_id. This is a prerequisite for converting get_reference, which is needed to convert parse_object. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-04-27timestamp_t: a new data type for timestampsLibravatar Johannes Schindelin1-2/+2
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>
2017-03-24Merge branch 'rs/path-name-safety-cleanup'Libravatar Junio C Hamano1-2/+0
Code clean-up. * rs/path-name-safety-cleanup: revision: remove declaration of path_name()
2017-03-18revision: remove declaration of path_name()Libravatar René Scharfe1-2/+0
The definition of path_name() was removed by 2824e1841 (list-objects: pass full pathname to callbacks); remove its declaration as well. Signed-off-by: Rene Scharfe <l.s.r@web.de> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-13Merge branch 'lt/pretty-expand-tabs'Libravatar Junio C Hamano1-0/+2
When "git log" shows the log message indented by 4-spaces, the remainder of a line after a HT does not align in the way the author originally intended. The command now expands tabs by default in such a case, and allows the users to override it with a new option, '--no-expand-tabs'. * lt/pretty-expand-tabs: pretty: test --expand-tabs pretty: allow tweaking tabwidth in --expand-tabs pretty: enable --expand-tabs by default for selected pretty formats pretty: expand tabs in indented logs to make things line up properly
2016-03-30pretty: enable --expand-tabs by default for selected pretty formatsLibravatar Junio C Hamano1-1/+2
"git log --pretty={medium,full,fuller}" and "git log" by default prepend 4 spaces to the log message, so it makes sense to enable the new "expand-tabs" facility by default for these formats. Add --no-expand-tabs option to override the new default. The change alone breaks a test in t4201 that runs "git shortlog" on the output from "git log", and expects that the output from "git log" does not do such a tab expansion. Adjust the test to explicitly disable expand-tabs with --no-expand-tabs. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-30pretty: expand tabs in indented logs to make things line up properlyLibravatar Linus Torvalds1-0/+1
A commit log message sometimes tries to line things up using tabs, assuming fixed-width font with the standard 8-place tab settings. Viewing such a commit however does not work well in "git log", as we indent the lines by prefixing 4 spaces in front of them. This should all line up: Column 1 Column 2 -------- -------- A B ABCD EFGH SPACES Instead of Tabs Even with multi-byte UTF8 characters: Column 1 Column 2 -------- -------- Ä B åäö 100 A Møøse once bit my sister.. Tab-expand the lines in "git log --expand-tabs" output before prefixing 4 spaces. This is based on the patch by Linus Torvalds, but at this step, we require an explicit command line option to enable the behaviour. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-16list-objects: pass full pathname to callbacksLibravatar Jeff King1-2/+1
When we find a blob at "a/b/c", we currently pass this to our show_object_fn callbacks as two components: "a/b/" and "c". Callbacks which want the full value then call path_name(), which concatenates the two. But this is an inefficient interface; the path is a strbuf, and we could simply append "c" to it temporarily, then roll back the length, without creating a new copy. So we could improve this by teaching the callsites of path_name() this trick (and there are only 3). But we can also notice that no callback actually cares about the broken-down representation, and simply pass each callback the full path "a/b/c" as a string. The callback code becomes even simpler, then, as we do not have to worry about freeing an allocated buffer, nor rolling back our modification to the strbuf. This is theoretically less efficient, as some callbacks would not bother to format the final path component. But in practice this is not measurable. Since we use the same strbuf over and over, our work to grow it is amortized, and we really only pay to memcpy a few bytes. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-16list-objects: drop name_path entirelyLibravatar Jeff King1-6/+2
In the previous commit, we left name_path as a thin wrapper around a strbuf. This patch drops it entirely. As a result, every show_object_fn callback needs to be adjusted. However, none of their code needs to be changed at all, because the only use was to pass it to path_name(), which now handles the bare strbuf. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-16list-objects: convert name_path to a strbufLibravatar Jeff King1-3/+1
The "struct name_path" data is examined in only two places: we generate it in process_tree(), and we convert it to a single string in path_name(). Everyone else just passes it through to those functions. We can further note that process_tree() already keeps a single strbuf with the leading tree path, for use with tree_entry_interesting(). Instead of building a separate name_path linked list, let's just use the one we already build in "base". This reduces the amount of code (especially tricky code in path_name() which did not check for integer overflows caused by deep or large pathnames). It is also more efficient in some instances. Any time we were using tree_entry_interesting, we were building up the strbuf anyway, so this is an immediate and obvious win there. In cases where we were not, we trade off storing "pathname/" in a strbuf on the heap for each level of the path, instead of two pointers and an int on the stack (with one pointer into the tree object). On a 64-bit system, the latter is 20 bytes; so if path components are less than that on average, this has lower peak memory usage. In practice it probably doesn't matter either way; we are already holding in memory all of the tree objects leading up to each pathname, and for normal-depth pathnames, we are only talking about hundreds of bytes. This patch leaves "struct name_path" as a thin wrapper around the strbuf, to avoid disrupting callbacks. We should fix them, but leaving it out makes this diff easier to view. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-02-12list-objects: pass full pathname to callbacksLibravatar Jeff King1-2/+1
When we find a blob at "a/b/c", we currently pass this to our show_object_fn callbacks as two components: "a/b/" and "c". Callbacks which want the full value then call path_name(), which concatenates the two. But this is an inefficient interface; the path is a strbuf, and we could simply append "c" to it temporarily, then roll back the length, without creating a new copy. So we could improve this by teaching the callsites of path_name() this trick (and there are only 3). But we can also notice that no callback actually cares about the broken-down representation, and simply pass each callback the full path "a/b/c" as a string. The callback code becomes even simpler, then, as we do not have to worry about freeing an allocated buffer, nor rolling back our modification to the strbuf. This is theoretically less efficient, as some callbacks would not bother to format the final path component. But in practice this is not measurable. Since we use the same strbuf over and over, our work to grow it is amortized, and we really only pay to memcpy a few bytes. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-02-12list-objects: drop name_path entirelyLibravatar Jeff King1-6/+2
In the previous commit, we left name_path as a thin wrapper around a strbuf. This patch drops it entirely. As a result, every show_object_fn callback needs to be adjusted. However, none of their code needs to be changed at all, because the only use was to pass it to path_name(), which now handles the bare strbuf. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-02-12list-objects: convert name_path to a strbufLibravatar Jeff King1-3/+1
The "struct name_path" data is examined in only two places: we generate it in process_tree(), and we convert it to a single string in path_name(). Everyone else just passes it through to those functions. We can further note that process_tree() already keeps a single strbuf with the leading tree path, for use with tree_entry_interesting(). Instead of building a separate name_path linked list, let's just use the one we already build in "base". This reduces the amount of code (especially tricky code in path_name() which did not check for integer overflows caused by deep or large pathnames). It is also more efficient in some instances. Any time we were using tree_entry_interesting, we were building up the strbuf anyway, so this is an immediate and obvious win there. In cases where we were not, we trade off storing "pathname/" in a strbuf on the heap for each level of the path, instead of two pointers and an int on the stack (with one pointer into the tree object). On a 64-bit system, the latter is 20 bytes; so if path components are less than that on average, this has lower peak memory usage. In practice it probably doesn't matter either way; we are already holding in memory all of the tree objects leading up to each pathname, and for normal-depth pathnames, we are only talking about hundreds of bytes. This patch leaves "struct name_path" as a thin wrapper around the strbuf, to avoid disrupting callbacks. We should fix them, but leaving it out makes this diff easier to view. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-12-15format-patch: add an option to suppress commit hashLibravatar brian m. carlson1-0/+1
Oftentimes, patches created by git format-patch will be stored in version control or compared with diff. In these cases, two otherwise identical patches can have different commit hashes, leading to diff noise. Teach git format-patch a --zero-commit option that instead produces an all-zero hash to avoid this diff noise. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-29convert "enum date_mode" into a structLibravatar Jeff King1-1/+1
In preparation for adding date modes that may carry extra information beyond the mode itself, this patch converts the date_mode enum into a struct. Most of the conversion is fairly straightforward; we pass the struct as a pointer and dereference the type field where necessary. Locations that declare a date_mode can use a "{}" constructor. However, the tricky case is where we use the enum labels as constants, like: show_date(t, tz, DATE_NORMAL); Ideally we could say: show_date(t, tz, &{ DATE_NORMAL }); but of course C does not allow that. Likewise, we cannot cast the constant to a struct, because we need to pass an actual address. Our options are basically: 1. Manually add a "struct date_mode d = { DATE_NORMAL }" definition to each caller, and pass "&d". This makes the callers uglier, because they sometimes do not even have their own scope (e.g., they are inside a switch statement). 2. Provide a pre-made global "date_normal" struct that can be passed by address. We'd also need "date_rfc2822", "date_iso8601", and so forth. But at least the ugliness is defined in one place. 3. Provide a wrapper that generates the correct struct on the fly. The big downside is that we end up pointing to a single global, which makes our wrapper non-reentrant. But show_date is already not reentrant, so it does not matter. This patch implements 3, along with a minor macro to keep the size of the callers sane. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-02-11Merge branch 'jc/unused-symbols'Libravatar Junio C Hamano1-8/+4
Mark file-local symbols as "static", and drop functions that nobody uses. * jc/unused-symbols: shallow.c: make check_shallow_file_for_update() static remote.c: make clear_cas_option() static urlmatch.c: make match_urls() static revision.c: make save_parents() and free_saved_parents() static line-log.c: make line_log_data_init() static pack-bitmap.c: make pack_bitmap_filename() static prompt.c: remove git_getpass() nobody uses http.c: make finish_active_slot() and handle_curl_result() static
2015-02-11Merge branch 'cj/log-invert-grep'Libravatar Junio C Hamano1-0/+2
"git log --invert-grep --grep=WIP" will show only commits that do not have the string "WIP" in their messages. * cj/log-invert-grep: log: teach --invert-grep option
2015-01-15revision.c: make save_parents() and free_saved_parents() staticLibravatar Junio C Hamano1-8/+4
No external callers exist. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-01-13log: teach --invert-grep optionLibravatar Christoph Junghans1-0/+2
"git log --grep=<string>" shows only commits with messages that match the given string, but sometimes it is useful to be able to show only commits that do *not* have certain messages (e.g. "show me ones that are not FIXUP commits"). Originally, we had the invert-grep flag in grep_opt, but because "git grep --invert-grep" does not make sense except in conjunction with "--files-with-matches", which is already covered by "--files-without-matches", it was moved it to revisions structure. To have the flag there expresses the function to the feature better. When the newly inserted two tests run, the history would have commits with messages "initial", "second", "third", "fourth", "fifth", "sixth" and "Second", committed in this order. The commits that does not match either "th" or "Sec" is "second" and "initial". For the case insensitive case only "initial" matches. Signed-off-by: Christoph Junghans <ottxor@gentoo.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-29rev-list: add an option to mark fewer edges as uninterestingLibravatar brian m. carlson1-0/+1
In commit fbd4a70 (list-objects: mark more commits as edges in mark_edges_uninteresting - 2013-08-16), we marked an increasing number of edges uninteresting. This change, and the subsequent change to make this conditional on --objects-edge, are used by --thin to make much smaller packs for shallow clones. Unfortunately, they cause a significant performance regression when pushing non-shallow clones with lots of refs (23.322 seconds vs. 4.785 seconds with 22400 refs). Add an option to git rev-list, --objects-edge-aggressive, that preserves this more aggressive behavior, while leaving --objects-edge to provide more performant behavior. Preserve the current behavior for the moment by using the aggressive option. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-19revision: remove definition of unused 'add_object' functionLibravatar Ramsay Jones1-5/+0
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-19rev-list: add --indexed-objects optionLibravatar Jeff King1-0/+1
There is currently no easy way to ask the revision traversal machinery to include objects reachable from the index (e.g., blobs and trees that have not yet been committed). This patch adds an option to do so. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-16reachable: reuse revision.c "add all reflogs" codeLibravatar Jeff King1-0/+1
We want to add all reflog entries as tips for finding reachable objects. The revision machinery can already do this (to support "rev-list --reflog"); we can reuse that code. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-04-08Merge branch 'jk/pack-bitmap'Libravatar Junio C Hamano1-1/+2
* jk/pack-bitmap: pack-objects: do not reuse packfiles without --delta-base-offset add `ignore_missing_links` mode to revwalk
2014-04-04add `ignore_missing_links` mode to revwalkLibravatar Vicent Marti1-1/+2
When pack-objects is computing the reachability bitmap to serve a fetch request, it can erroneously die() if some of the UNINTERESTING objects are not present. Upload-pack throws away HAVE lines from the client for objects we do not have, but we may have a tip object without all of its ancestors (e.g., if the tip is no longer reachable and was new enough to survive a `git prune`, but some of its reachable objects did get pruned). In the non-bitmap case, we do a revision walk with the HAVE objects marked as UNINTERESTING. The revision walker explicitly ignores errors in accessing UNINTERESTING commits to handle this case (and we do not bother looking at UNINTERESTING trees or blobs at all). When we have bitmaps, however, the process is quite different. The bitmap index for a pack-objects run is calculated in two separate steps: First, we perform an extensive walk from all the HAVEs to find the full set of objects reachable from them. This walk is usually optimized away because we are expected to hit an object with a bitmap during the traversal, which allows us to terminate early. Secondly, we perform an extensive walk from all the WANTs, which usually also terminates early because we hit a commit with an existing bitmap. Once we have the resulting bitmaps from the two walks, we AND-NOT them together to obtain the resulting set of objects we need to pack. When we are walking the HAVE objects, the revision walker does not know that we are walking it only to mark the results as uninteresting. We strip out the UNINTERESTING flag, because those objects _are_ interesting to us during the first walk. We want to keep going to get a complete set of reachable objects if we can. We need some way to tell the revision walker that it's OK to silently truncate the HAVE walk, just like it does for the UNINTERESTING case. This patch introduces a new `ignore_missing_links` flag to the `rev_info` struct, which we set only for the HAVE walk. It also adds tests to cover UNINTERESTING objects missing from several positions: a missing blob, a missing tree, and a missing parent commit. The missing blob already worked (as we do not care about its contents at all), but the other two cases caused us to die(). Note that there are a few cases we do not need to test: 1. We do not need to test a missing tree, with the blob still present. Without the tree that refers to it, we would not know that the blob is relevant to our walk. 2. We do not need to test a tip commit that is missing. Upload-pack omits these for us (and in fact, we complain even in the non-bitmap case if it fails to do so). Reported-by: Siddharth Agarwal <sid0@fb.com> Signed-off-by: Vicent Marti <tanoku@gmail.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-04-03Merge branch 'nd/log-show-linear-break'Libravatar Junio C Hamano1-1/+10
Attempts to show where a single-strand-of-pearls break in "git log" output. * nd/log-show-linear-break: log: add --show-linear-break to help see non-linear history object.h: centralize object flag allocation
2014-03-25log: add --show-linear-break to help see non-linear historyLibravatar Nguyễn Thái Ngọc Duy1-1/+9
Option explanation is in rev-list-options.txt. The interaction with -z is left undecided. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-25object.h: centralize object flag allocationLibravatar Nguyễn Thái Ngọc Duy1-0/+1
While the field "flags" is mainly used by the revision walker, it is also used in many other places. Centralize the whole flag allocation to one place for a better overview (and easier to move flags if we have too). Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-27Merge branch 'jk/pack-bitmap'Libravatar Junio C Hamano1-0/+2
Borrow the bitmap index into packfiles from JGit to speed up enumeration of objects involved in a commit range without having to fully traverse the history. * jk/pack-bitmap: (26 commits) ewah: unconditionally ntohll ewah data ewah: support platforms that require aligned reads read-cache: use get_be32 instead of hand-rolled ntoh_l block-sha1: factor out get_be and put_be wrappers do not discard revindex when re-preparing packfiles pack-bitmap: implement optional name_hash cache t/perf: add tests for pack bitmaps t: add basic bitmap functionality tests count-objects: recognize .bitmap in garbage-checking repack: consider bitmaps when performing repacks repack: handle optional files created by pack-objects repack: turn exts array into array-of-struct repack: stop using magic number for ARRAY_SIZE(exts) pack-objects: implement bitmap writing rev-list: add bitmap mode to speed up object lists pack-objects: use bitmaps when packing objects pack-objects: split add_object_entry pack-bitmap: add support for bitmap indexes documentation: add documentation for the bitmap format ewah: compressed bitmap implementation ...
2013-12-05Merge branch 'jc/ref-excludes'Libravatar Junio C Hamano1-0/+8
People often wished a way to tell "git log --branches" (and "git log --remotes --not --branches") to exclude some local branches from the expansion of "--branches" (similarly for "--tags", "--all" and "--glob=<pattern>"). Now they have one. * jc/ref-excludes: rev-parse: introduce --exclude=<glob> to tame wildcards rev-list --exclude: export add/clear-ref-exclusion and ref-excluded API rev-list --exclude: tests document --exclude option revision: introduce --exclude=<glob> to tame wildcards
2013-11-01rev-list --exclude: export add/clear-ref-exclusion and ref-excluded APILibravatar Junio C Hamano1-0/+5
... while updating their function signature. To be squashed into the initial patch to rev-list. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-10-31revision: add missing includeLibravatar Felipe Contreras1-0/+1
Otherwise we might not have 'struct diff_options'. [jc: needs a matching follow-up patch to remove inclusion of diff.h from *.c files that do not themselves use anything from diff.h] Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>