kernel/git - git - PowerEL Git System

Commit Graph

Author	SHA1	Message	Date
René Scharfe	2fe44394c8	treewide: remove duplicate #include directives Found with "git grep '^#include ' '*.c' \| sort \| uniq -d". Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	5 years ago
Jeff King	4c96a77594	list-objects-filter: delay parsing of sparse oid The list-objects-filter code has two steps to its initialization: 1. parse_list_objects_filter() makes sure the spec is a filter we know about and is syntactically correct. This step is done by "rev-list" or "upload-pack" that is going to apply a filter, but also by "git clone" or "git fetch" before they send the spec across the wire. 2. list_objects_filter__init() runs the type-specific initialization (using function pointers established in step 1). This happens at the start of traverse_commit_list_filtered(), when we're about to actually use the filter. It's a good idea to parse as much as we can in step 1, in order to catch problems early (e.g., a blob size limit that isn't a number). But one thing we _shouldn't_ do is resolve any oids at that step (e.g., for sparse-file contents specified by oid). In the case of a fetch, the oid has to be resolved on the remote side. The current code does resolve the oid during the parse phase, but ignores any error (which we must do, because we might just be sending the spec across the wire). This leads to two bugs: - if we're not in a repository (e.g., because it's git-clone parsing the spec), then we trigger a BUG() trying to resolve the name - if we did hit the error case, we still have to notice that later and bail. The code path in rev-list handles this, but the one in upload-pack does not, leading to a segfault. We can fix both by moving the oid resolution into the sparse-oid init function. At that point we know we have a repository (because we're about to traverse), and handling the error there fixes the segfault. As a bonus, we can drop the NULL sparse_oid_value check in rev-list, since this is now handled in the sparse-oid-filter init function. Signed-off-by: Jeff King <peff@peff.net> Acked-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	6 years ago
Matthew DeVore	cf9ceb5a12	list-objects-filter-options: make filter_spec a string_list Make the filter_spec string a string_list rather than a raw C string. The list of strings must be concatted together to make a complete filter_spec. A future patch will use this capability to build "combine:" filter specs gradually. A strbuf would seem to be a more natural choice for this object, but it unfortunately requires initialization besides just zero'ing out the memory. This results in all container structs, and all containers of those structs, etc., to also require initialization. Initializing them all would be more cumbersome that simply using a string_list, which behaves properly when its contents are zero'd. For the purposes of code simplification, change behavior in how filter specs are conveyed over the protocol: do not normalize the tree:<depth> filter specs since there should be no server in existence that supports tree:# but not tree:#k etc. Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	6 years ago
Emily Shaffer	42357b4e8b	rev-list: teach --no-object-names to enable piping Allow easier parsing by cat-file by giving rev-list an option to print only the OID of a non-commit object without any additional information. This is a short-term shim; later on, rev-list should be taught how to print the types of objects it finds in a format similar to cat-file's. Before this commit, the output from rev-list needed to be massaged before being piped to cat-file, like so: git rev-list --objects HEAD \| cut -f 1 -d ' ' \| git cat-file --batch-check This was especially unexpected when dealing with root trees, as an invisible whitespace exists at the end of the OID: git rev-list --objects --filter=tree:1 --max-count=1 HEAD \| xargs -I% echo "AA%AA" Now, it can be piped directly, as in the added test case: git rev-list --objects --no-object-names HEAD \| git cat-file --batch-check Signed-off-by: Emily Shaffer <emilyshaffer@google.com> Change-Id: I489bdf0a8215532e540175188883ff7541d70e1b Signed-off-by: Junio C Hamano <gitster@pobox.com>	6 years ago
Jeff King	d92349dd55	rev-list: drop unused void pointer from finish_commit() Our finish_commit() function used to be passed directly to the revision machinery as a callback. But after `989937221a` (rev-list: fix --verify-objects --quiet becoming --objects, 2012-02-28), it is used only as a helper in show_commit(). It doesn't use its void "data" parameter, and we no longer have to conform to the callback interface. Let's drop it. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	6 years ago
Jeff King	ee4dfee227	rev-list: let traversal die when --missing is not in use Commit `7c0fe330d5` (rev-list: handle missing tree objects properly, 2018-10-05) taught the traversal machinery used by git-rev-list to ignore missing trees, so that rev-list could handle them itself. However, it does so only by checking via oid_object_info_extended() that the object exists at all. This can miss several classes of errors that were previously detected by rev-list: - type mismatches (e.g., we expected a tree but got a blob) - failure to read the object data (e.g., due to bitrot on disk) This is especially important because we use "rev-list --objects" as our connectivity check to admit new objects to the repository, and it will now miss these cases (though the bitrot one is less important here, because we'd typically have just hashed and stored the object). There are a few options to fix this: 1. we could check these properties in rev-list when we do the existence check. This is probably too expensive in practice (perhaps even for a type check, but definitely for checking the whole content again, which implies loading each object into memory twice). 2. teach the traversal machinery to differentiate between a missing object, and one that could not be loaded as expected. This probably wouldn't be too hard to detect type mismatches, but detecting bitrot versus a truly missing object would require deep changes to the object-loading code. 3. have the traversal machinery communicate the failure to the caller, so that it can decide how to proceed without re-evaluting the object itself. Of those, I think (3) is probably the best path forward. However, this patch does none of them. In the name of expediently fixing the regression to a normal "rev-list --objects" that we use for connectivity checks, this simply restores the pre-7c0fe330d5 behavior of having the traversal die as soon as it fails to load a tree (when --missing is set to MA_ERROR, which is the default). Note that we can't get rid of the object-existence check in finish_object(), because this also handles blobs (which are not otherwise checked at all by the traversal code). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	6 years ago
Jeff King	f06ab027ef	rev-list: allow cached objects in existence check This fixes a regression in `7c0fe330d5` (rev-list: handle missing tree objects properly, 2018-10-05) where rev-list will now complain about the empty tree when it doesn't physically exist on disk. Before that commit, we relied on the traversal code in list-objects.c to walk through the trees. Since it uses parse_tree(), we'd do a normal object lookup that includes looking in the set of "cached" objects (which is where our magic internal empty-tree kicks in). After that commit, we instead tell list-objects.c not to die on any missing trees, and we check them ourselves using has_object_file(). But that function uses OBJECT_INFO_SKIP_CACHED, which means we won't use our internal empty tree. This normally wouldn't come up. For most operations, Git will try to write out the empty tree object as it would any other object. And pack-objects in a push or fetch will send the empty tree (even if it's virtual on the sending side). However, there are cases where this can matter. One I found in the wild: 1. The root tree of a commit became empty by deleting all files, without using an index. In this case it was done using libgit2's tree builder API, but as the included test shows, it can easily be done with regular git using hash-object. The resulting repo works OK, as we'd avoid walking over our own reachable commits for a connectivity check. 2. Cloning with --reference pointing to the repository from (1) can trigger the problem, because we tell the other side we already have that commit (and hence the empty tree), but then walk over it during the connectivity check (where we complain about it missing). Arguably the workflow in step (1) should be more careful about writing the empty tree object if we're referencing it. But this workflow did work prior to `7c0fe330d5`, so let's restore it. This patch makes the minimal fix, which is to swap out a direct call to oid_object_info_extended(), minus the SKIP_CACHED flag, instead of calling has_object_file(). This is all that has_object_file() is doing under the hood. And there's little danger of unrelated fallout from other unexpected "cached" objects, since there's only one call site that ends such a cached object, and it's in git-blame. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	6 years ago
Derrick Stolee	4f6d26b167	list-objects: consume sparse tree walk When creating a pack-file using 'git pack-objects --revs' we provide a list of interesting and uninteresting commits. For example, a push operation would make the local topic branch be interesting and the known remote refs as uninteresting. We want to discover the set of new objects to send to the server as a thin pack. We walk these commits until we discover a frontier of commits such that every commit walk starting at interesting commits ends in a root commit or unintersting commit. We then need to discover which non-commit objects are reachable from uninteresting commits. This commit walk is not changing during this series. The mark_edges_uninteresting() method in list-objects.c iterates on the commit list and does the following: * If the commit is UNINTERSTING, then mark its root tree and every object it can reach as UNINTERESTING. * If the commit is interesting, then mark the root tree of every UNINTERSTING parent (and all objects that tree can reach) as UNINTERSTING. At the very end, we repeat the process on every commit directly given to the revision walk from stdin. This helps ensure we properly cover shallow commits that otherwise were not included in the frontier. The logic to recursively follow trees is in the mark_tree_uninteresting() method in revision.c. The algorithm avoids duplicate work by not recursing into trees that are already marked UNINTERSTING. Add a new 'sparse' option to the mark_edges_uninteresting() method that performs this logic in a slightly different way. As we iterate over the commits, we add all of the root trees to an oidset. Then, call mark_trees_uninteresting_sparse() on that oidset. Note that we include interesting trees in this process. The current implementation of mark_trees_unintersting_sparse() will walk the same trees as the old logic, but this will be replaced in a later change. Add a '--sparse' flag in 'git pack-objects' to call this new logic. Add a new test script t/t5322-pack-objects-sparse.sh that tests this option. The tests currently demonstrate that the resulting object list is the same as the old algorithm. This includes a case where both algorithms pack an object that is not needed by a remote due to limits on the explored set of trees. When the sparse algorithm is changed in a later commit, we will add a test that demonstrates a change of behavior in some cases. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	6 years ago
Stefan Beller	6a7895fd8a	commit: prepare free_commit_buffer and release_commit_memory for any repo Pass the object pool to free_commit_buffer and release_commit_memory, such that we can eliminate access to 'the_repository'. Also remove the TODO in release_commit_memory, as commit->util was removed in `9d2c97016f` (commit.h: delete 'util' field in struct commit, 2018-05-19) Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	6 years ago
Matthew DeVore	bbcde41a70	revision.c: put promisor option in specialized struct Put the allow_exclude_promisor_objects flag in setup_revision_opt. When it was in rev_info, it was unclear when it was used, since rev_info is passed to functions that don't use the flag. This resulted in unnecessary setting of the flag in prune.c, so fix that as well. Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	6 years ago
Matthew DeVore	669b1d2aae	exclude-promisor-objects: declare when option is allowed The --exclude-promisor-objects option causes some funny behavior in at least two commands: log and blame. It causes a BUG crash: $ git log --exclude-promisor-objects BUG: revision.c:2143: exclude_promisor_objects can only be used when fetch_if_missing is 0 Aborted [134] Fix this such that the option is treated like any other unknown option. The commands that must support it are limited, so declare in those commands that the flag is supported. In particular: pack-objects prune rev-list The commands were found by searching for logic which parses --exclude-promisor-objects outside of revision.c. Extra logic outside of revision.c is needed because fetch_if_missing must be turned on before revision.c sees the option or it will BUG-crash. The above list is supported by the fact that no other command is introspectively invoked by another command passing --exclude-promisor-object. Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	6 years ago
Matthew DeVore	7c0fe330d5	rev-list: handle missing tree objects properly Previously, we assumed only blob objects could be missing. This patch makes rev-list handle missing trees like missing blobs. The --missing=* and --exclude-promisor-objects flags now work for trees as they already do for blobs. This is demonstrated in t6112. Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	6 years ago
Nguyễn Thái Ngọc Duy	2abf350385	revision.c: remove implicit dependency on the_index Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Jeff King	a12cbe23ef	rev-list: make empty --stdin not an error When we originally did the series that contains `7ba826290a` (revision: add rev_input_given flag, 2017-08-02) the intent was that "git rev-list --stdin </dev/null" would similarly become a successful noop. However, an attempt at the time to do that did not work[1]. The problem is that rev_input_given serves two roles: - it tells rev-list.c that it should not error out - it tells revision.c that it should not have the "default" ref kick (e.g., "HEAD" in "git log") We want to trigger the former, but not the latter. This is technically possible with a single flag, if we set the flag only after revision.c's revs->def check. But this introduces a rather subtle ordering dependency. Instead, let's keep two flags: one to denote when we got actual input (which triggers both roles) and one for when we read stdin (which triggers only the first). This does mean a caller interested in the first role has to check both flags, but there's only one such caller. And any future callers might want to make the distinction anyway (e.g., if they care less about erroring out, and more about whether revision.c soaked up our stdin). In fact, we already keep such a flag internally in revision.c for this purpose, so this is really just exposing that to the caller (and the old function-local flag can go away in favor of our new one). [1] https://public-inbox.org/git/20170802223416.gwiezhbuxbdmbjzx@sigill.intra.peff.net/ Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Stefan Beller	109cd76dd3	object: add repository argument to parse_object 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>	7 years ago
Jonathan Tan	f3c23db2d7	pack-bitmap: add free function Add a function to free struct bitmap_index instances, and use it where needed (except when rebuild_existing_bitmaps() is used, since it creates references to the bitmaps within the struct bitmap_index passed to it). Note that the hashes field in struct bitmap_index is not freed because it points to another field within the same struct. The documentation for that field has been updated to clarify that. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Jonathan Tan	3ae5fa0768	pack-bitmap: remove bitmap_git global variable Remove the bitmap_git global variable. Instead, generate on demand an instance of struct bitmap_index for code that needs to access it. This allows us significant control over the lifetime of instances of struct bitmap_index. In particular, packs can now be closed without worrying if an unnecessarily long-lived "pack" field in struct bitmap_index still points to it. The bitmap API is also clearer in that we need to first obtain a struct bitmap_index, then we use it. This patch raises two potential issues: (1) memory for the struct bitmap_index is allocated without being freed, and (2) prepare_bitmap_git() and prepare_bitmap_walk() can reuse a previously loaded bitmap. For (1), this will be dealt with in a subsequent patch in this patch set that also deals with freeing the contents of the struct bitmap_index (which were not freed previously, because they have global scope). For (2), current bitmap users only load the bitmap once at most (note that pack-objects can use bitmaps or write bitmaps, but not both at the same time), so support for reuse has no effect - and future users can pass around the struct bitmap_index * obtained if they need to do 2 or more things with the same bitmap. Helped-by: Stefan Beller <sbeller@google.com> Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Helped-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Stefan Beller	cbd53a2193	object-store: move object access functions to object-store.h This should make these functions easier to find and cache.h less overwhelming to read. In particular, this moves: - read_object_file - oid_object_info - write_object_file As a result, most of the codebase needs to #include object-store.h. In this patch the #include is only added to files that would fail to compile otherwise. It would be better to #include wherever identifiers from the header are used. That can happen later when we have better tooling for it. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Ramsay Jones	156e1782a8	-Wuninitialized: remove some 'init-self' workarounds The 'self-initialised' variables construct (ie <type> var = var;) has been used to silence gcc '-W[maybe-]uninitialized' warnings. This has, unfortunately, caused MSVC to issue 'uninitialized variable' warnings. Also, using clang static analysis causes complaints about an 'Assigned value is garbage or undefined'. There are six such constructs in the current codebase. Only one of the six causes gcc to issue a '-Wmaybe-uninitialized' warning (which will be addressed elsewhere). The remaining five 'init-self' gcc workarounds are noted below, along with the commit which introduced them: 1. builtin/rev-list.c: 'reaches' and 'all', see commit `457f08a030` ("git-rev-list: add --bisect-vars option.", 2007-03-21). 2. merge-recursive.c:2064 'mrtree', see commit `f120ae2a8e` ("merge- recursive.c: mrtree in merge() is not used before set", 2007-10-29). 3. fast-import.c:3023 'oe', see commit `85c62395b1` ("fast-import: let importers retrieve blobs", 2010-11-28). 4. fast-import.c:3006 'oe', see commit `28c7b1f7b7` ("fast-import: add a get-mark command", 2015-07-01). Remove the 'self-initialised' variable constructs noted above. Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
brian m. carlson	aab9583f7b	Convert find_unique_abbrev* to struct object_id Convert find_unique_abbrev and find_unique_abbrev_r to each take a pointer to struct object_id. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Jeff King	7fa31b645f	commit: drop uses of get_cached_commit_buffer() 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 `3131b71301` (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 `be5c9fb904` (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: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Jeff Hostetler	aa57b871da	fetch: inherit filter-spec from partial clone Teach (partial) fetch to inherit the filter-spec used by the partial clone. Extend --no-filter to override this inheritance. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Jonathan Tan	df11e19648	rev-list: support termination at promisor objects 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>	7 years ago
Jeff Hostetler	f4371a883f	rev-list: support --no-filter argument Teach rev-list to support --no-filter to override a previous --filter=<filter_spec> argument. This is to be consistent with commands that use OPT_PARSE macros. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Jeff Hostetler	caf3827e2f	rev-list: add list-objects filtering support Teach rev-list to use the filtering provided by the traverse_commit_list_filtered() interface to omit unwanted objects from the result. Object filtering is only allowed when one of the "--objects*" options are used. When the "--filter-print-omitted" option is used, the omitted objects are printed at the end. These are marked with a "~". This option can be combined with "--quiet" to get a list of just the omitted objects. Add t6112 test. In the future, we will introduce a "partial clone" mechanism wherein an object in a repo, obtained from a remote, may reference a missing object that can be dynamically fetched from that remote once needed. This "partial clone" mechanism will have a way, sometimes slow, of determining if a missing link is one of the links expected to be produced by this mechanism. This patch introduces handling of missing objects to help debugging and development of the "partial clone" mechanism, and once the mechanism is implemented, for a power user to perform operations that are missing-object aware without incurring the cost of checking if a missing link is expected. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Martin Ågren	24d707f636	bisect: change calling-convention of `find_bisection()` This function takes a commit list and returns a commit list. The returned list is built by modifying the original list. Thus the caller should not use the original list again (and after the next commit fixes a memory leak, it must not). Change the function signature so that it takes a **list and has void return type. That should make it harder to misuse this function. While we're here, document this function. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Brandon Williams	0d1e0e7801	diff: make struct diff_flags members lowercase Now that the flags stored in struct diff_flags are being accessed directly and not through macros, change all struct members from being uppercase to lowercase. This conversion is done using the following semantic patch: @@ expression E; @@ - E.RECURSIVE + E.recursive @@ expression E; @@ - E.TREE_IN_RECURSIVE + E.tree_in_recursive @@ expression E; @@ - E.BINARY + E.binary @@ expression E; @@ - E.TEXT + E.text @@ expression E; @@ - E.FULL_INDEX + E.full_index @@ expression E; @@ - E.SILENT_ON_REMOVE + E.silent_on_remove @@ expression E; @@ - E.FIND_COPIES_HARDER + E.find_copies_harder @@ expression E; @@ - E.FOLLOW_RENAMES + E.follow_renames @@ expression E; @@ - E.RENAME_EMPTY + E.rename_empty @@ expression E; @@ - E.HAS_CHANGES + E.has_changes @@ expression E; @@ - E.QUICK + E.quick @@ expression E; @@ - E.NO_INDEX + E.no_index @@ expression E; @@ - E.ALLOW_EXTERNAL + E.allow_external @@ expression E; @@ - E.EXIT_WITH_STATUS + E.exit_with_status @@ expression E; @@ - E.REVERSE_DIFF + E.reverse_diff @@ expression E; @@ - E.CHECK_FAILED + E.check_failed @@ expression E; @@ - E.RELATIVE_NAME + E.relative_name @@ expression E; @@ - E.IGNORE_SUBMODULES + E.ignore_submodules @@ expression E; @@ - E.DIRSTAT_CUMULATIVE + E.dirstat_cumulative @@ expression E; @@ - E.DIRSTAT_BY_FILE + E.dirstat_by_file @@ expression E; @@ - E.ALLOW_TEXTCONV + E.allow_textconv @@ expression E; @@ - E.TEXTCONV_SET_VIA_CMDLINE + E.textconv_set_via_cmdline @@ expression E; @@ - E.DIFF_FROM_CONTENTS + E.diff_from_contents @@ expression E; @@ - E.DIRTY_SUBMODULES + E.dirty_submodules @@ expression E; @@ - E.IGNORE_UNTRACKED_IN_SUBMODULES + E.ignore_untracked_in_submodules @@ expression E; @@ - E.IGNORE_DIRTY_SUBMODULES + E.ignore_dirty_submodules @@ expression E; @@ - E.OVERRIDE_SUBMODULE_CONFIG + E.override_submodule_config @@ expression E; @@ - E.DIRSTAT_BY_LINE + E.dirstat_by_line @@ expression E; @@ - E.FUNCCONTEXT + E.funccontext @@ expression E; @@ - E.PICKAXE_IGNORE_CASE + E.pickaxe_ignore_case @@ expression E; @@ - E.DEFAULT_FOLLOW_RENAMES + E.default_follow_renames Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Brandon Williams	3b69daed86	diff: remove DIFF_OPT_TST macro Remove the `DIFF_OPT_TST` macro and instead access the flags directly. This conversion is done using the following semantic patch: @@ expression E; identifier fld; @@ - DIFF_OPT_TST(&E, fld) + E.flags.fld @@ type T; T *ptr; identifier fld; @@ - DIFF_OPT_TST(ptr, fld) + ptr->flags.fld Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
brian m. carlson	206649672e	pack-bitmap: convert traverse_bitmap_commit_list to object_id Convert traverse_bitmap_commit_list and the callbacks it takes to use a pointer to struct object_id. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	7 years ago
Junio C Hamano	8aade107dd	progress: simplify "delayed" progress API We used to expose the full power of the delayed progress API to the callers, so that they can specify, not just the message to show and expected total amount of work that is used to compute the percentage of work performed so far, the percent-threshold parameter P and the delay-seconds parameter N. The progress meter starts to show at N seconds into the operation only if we have not yet completed P per-cent of the total work. Most callers used either (0%, 2s) or (50%, 1s) as (P, N), but there are oddballs that chose more random-looking values like 95%. For a smoother workload, (50%, 1s) would allow us to start showing the progress meter earlier than (0%, 2s), while keeping the chance of not showing progress meter for long running operation the same as the latter. For a task that would take 2s or more to complete, it is likely that less than half of it would complete within the first second, if the workload is smooth. But for a spiky workload whose earlier part is easier, such a setting is likely to fail to show the progress meter entirely and (0%, 2s) is more appropriate. But that is merely a theory. Realistically, it is of dubious value to ask each codepath to carefully consider smoothness of their workload and specify their own setting by passing two extra parameters. Let's simplify the API by dropping both parameters and have everybody use (0%, 2s). Oh, by the way, the percent-threshold parameter and the structure member were consistently misspelled, which also is now fixed ;-) Helped-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	8 years ago
Jeff King	0159ba3226	rev-list: don't show usage when we see empty ref patterns If the user gives us no starting point for a traversal, we want to complain with our normal usage message. But if they tried to do so with "--all" or "--glob", but that happened not to match any refs, the usage message isn't helpful. We should just give them the empty output they asked for instead. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	8 years ago
Jeff King	d75dfb1089	rev-list: pass diffopt->use_colors through to pretty-print When rev-list pretty-prints a commit, it creates a new pretty_print_context and copies items from the rev_info struct. We don't currently copy the "use_color" field, though. Nobody seems to have noticed because the only part of pretty.c that cares is the %C(auto,...) placeholder, and presumably not many people use that with the rev-list plumbing (as opposed to with git-log). It will become more noticeable in a future patch, though, when we start treating all user-format colors as auto-colors (in which case it would become impossible to format colors with rev-list, even with --color=always). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	8 years ago
Jeff King	7f97de5ee1	rev-list: check reflog_info before showing usage When git-rev-list sees no pending commits, it shows a usage message. This works even when reflog-walking is requested, because the reflog-walk code currently puts the reflog tips into the pending queue. In preparation for refactoring the reflog-walk code, let's explicitly check whether we have any reflogs to walk. For now this is a noop, but the existing reflog tests will make sure that it kicks in after the refactoring. Likewise, we'll add a test that "rev-list -g" without specifying any reflogs continues to fail (so that we know our check does not kick in too aggressively). Note that the implementation needs to go into its own sub-function, as the walk code does not expose its innards outside of reflog-walk.c. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	8 years ago
Brandon Williams	b2141fc1d2	config: don't include config.h by default Stop including config.h by default in cache.h. Instead only include config.h in those files which require use of the config system. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	8 years ago
Junio C Hamano	5a88f97cff	diff- and log- family: handle "git cmd -h" early "git $builtin -h" bypasses the usual repository setup and calls the cmd_$builtin() function, expecting it to show the help text. Unfortunately the commands in the log- and the diff- family want to call into the revisions machinery, which by definition needs to have a repository already discovered. Strictly speaking, they may not need a repository only for parsing "-h", but it is a good discipline to future-proof codepath to ensure that setup_revisions() is called after we know that a repository is there. Handle the "git $builtin -h" special case very early in these commands to work around potential issues. Signed-off-by: Junio C Hamano <gitster@pobox.com>	8 years ago
brian m. carlson	c251c83df2	object: convert parse_object* to take struct object_id Make parse_object, parse_object_or_die, and parse_object_buffer take a pointer to struct object_id. Remove the temporary variables inserted earlier, since they are no longer necessary. Transform all of the callers using the following semantic patch: @@ expression E1; @@ - parse_object(E1.hash) + parse_object(&E1) @@ expression E1; @@ - parse_object(E1->hash) + parse_object(E1) @@ expression E1, E2; @@ - parse_object_or_die(E1.hash, E2) + parse_object_or_die(&E1, E2) @@ expression E1, E2; @@ - parse_object_or_die(E1->hash, E2) + parse_object_or_die(E1, E2) @@ expression E1, E2, E3, E4, E5; @@ - parse_object_buffer(E1.hash, E2, E3, E4, E5) + parse_object_buffer(&E1, E2, E3, E4, E5) @@ expression E1, E2, E3, E4, E5; @@ - parse_object_buffer(E1->hash, E2, E3, E4, E5) + parse_object_buffer(E1, E2, E3, E4, E5) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	8 years ago
Johannes Schindelin	cb71f8bdb5	PRItime: introduce a new "printf format" for timestamps Currently, Git's source code treats all timestamps as if they were unsigned longs. Therefore, it is okay to write "%lu" when printing them. There is a substantial problem with that, though: at least on Windows, time_t is larger than unsigned long, and hence we will want to switch away from the ill-specified `unsigned long` data type. So let's introduce the pseudo format "PRItime" (currently simply being defined to "lu") to make it easier to change the data type used for timestamps. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	8 years ago
brian m. carlson	dc01505f7f	Convert GIT_SHA1_HEXSZ used for allocation to GIT_MAX_HEXSZ Since we will likely be introducing a new hash function at some point, and that hash function might be longer than 40 hex characters, use the constant GIT_MAX_HEXSZ, which is designed to be suitable for allocations, instead of GIT_SHA1_HEXSZ. This will ease the transition down the line by distinguishing between places where we need to allocate memory suitable for the largest hash from those where we need to handle the current hash. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	8 years ago
René Scharfe	2490574d15	use oid_to_hex_r() for converting struct object_id hashes to hex strings Patch generated by Coccinelle and contrib/coccinelle/object_id.cocci. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	8 years ago
Jacob Keller	98985c6911	rev-list: use hdr_termination instead of a always using a newline When adding support for prefixing output of log and other commands using --line-prefix, commit `660e113ce1` ("graph: add support for --line-prefix on all graph-aware output", 2016-08-31) accidentally broke rev-list --header output. In order to make the output appear with a line-prefix, the flow was changed to always use the graph subsystem for display. Unfortunately the graph flow in rev-list did not use info->hdr_termination as it was assumed that graph output would never need to putput NULs. Since we now always use the graph code in order to handle the case of line-prefix, simply replace putchar('\n') with putchar(info->hdr_termination) which will correct this issue. Add a test for the --header case to make sure we don't break it in the future. Reported-by: Dennis Kaarsemaker <dennis@kaarsemaker.net> Signed-off-by: Jacob Keller <jacob.keller@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jacob Keller <jacob.keller@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	8 years ago
Jacob Keller	660e113ce1	graph: add support for --line-prefix on all graph-aware output Add an extension to git-diff and git-log (and any other graph-aware displayable output) such that "--line-prefix=<string>" will print the additional line-prefix on every line of output. To make this work, we have to fix a few bugs in the graph API that force graph_show_commit_msg to be used only when you have a valid graph. Additionally, we extend the default_diff_output_prefix handler to work even when no graph is enabled. This is somewhat of a hack on top of the graph API, but I think it should be acceptable here. This will be used by a future extension of submodule display which displays the submodule diff as the actual diff between the pre and post commit in the submodule project. Add some tests for both git-log and git-diff to ensure that the prefix is honored correctly. Signed-off-by: Jacob Keller <jacob.keller@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	9 years ago
Jeff King	434ea3cdad	rev-list: add optional progress reporting It's easy to ask rev-list to do a traversal that may takes many seconds (e.g., by calling "--objects --all"). In theory you can monitor its progress by the output you get to stdout, but this isn't always easy. Some operations, like "--count", don't make any output until the end. And some callers, like check_everything_connected(), are using it just for the error-checking of the traversal, and throw away stdout entirely. This patch adds a "--progress" option which can be used to give some eye-candy for a user waiting for a long traversal. This is just a rev-list option and not a regular traversal option, because it needs cooperation from the callbacks in builtin/rev-list.c to do the actual count. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	9 years ago
Jeff King	fb85db84dc	rev-list: disable bitmaps when "-n" is used with listing objects You can ask rev-list to use bitmaps to speed up an --objects traversal, which should generally give you your answers much faster. Likewise, you can ask rev-list to limit such a traversal with `-n`, in which case we'll show only a limited set of commits (and only the tree and commit objects directly reachable from those commits). But if you do both together, the results are nonsensical. We end up limiting any fallback traversal we do to _find_ the bitmaps, but the actual set of objects we output will be picked arbitrarily from the union of any bitmaps we do find, and will involve the objects of many more commits. It's possible that somebody might want this as a "show me what you can, but limit the amount of work you do" flag. But as with the prior commit clamping "--count", the results are basically non-deterministic; you'll get the values from some commits between `n` and the total number, and you can't tell which. And unlike the `--count` case, we can't easily generate the "real" value from the bitmap values (you can't just walk back `-n` commits and subtract out the reachable objects from the boundary commits; the bitmaps for `X` record its total reachability, so you don't know which objects are directly from `X` itself, which from `X^`, and so on). So let's just fallback to the non-bitmap code path in this case, so we always give a sane answer. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	9 years ago
Jeff King	5c9f9bf313	rev-list: "adjust" results of "--count --use-bitmap-index -n" If you ask rev-list for: git rev-list --count --use-bitmap-index HEAD we optimize out the actual traversal and just give you the number of bits set in the commit bitmap. This is faster, which is good. But if you ask to limit the size of the traversal, like: git rev-list --count --use-bitmap-index -n 100 HEAD we'll still output the full bitmapped number we found. On the surface, that might even seem OK. You explicitly asked to use the bitmap index, and it was cheap to compute the real answer, so we gave it to you. But there's something much more complicated going on under the hood. If we don't have a bitmap directly for HEAD, then we have to actually traverse backwards, looking for a bitmapped commit. And _that_ traversal is bounded by our `-n` count. This is a good thing, because it bounds the work we have to do, which is probably what the user wanted by asking for `-n`. But now it makes the output quite confusing. You might get many values: - your `-n` value, if we walked back and never found a bitmap (or fewer if there weren't that many commits) - the actual full count, if we found a bitmap root for every path of our traversal with in the `-n` limit - any number in between! We might have walked back and found _some_ bitmaps, but then cut off the traversal early with some commits not accounted for in the result. So you cannot even see a value higher than your `-n` and say "OK, bitmaps kicked in, this must be the real full count". The only sane thing is for git to just clamp the value to a maximum of the `-n` value, which means we should output the exact same results whether bitmaps are in use or not. The test in t5310 demonstrates this by using `-n 1`. Without this patch we fail in the full-bitmap case (where we do not have to traverse at all) but _not_ in the partial-bitmap case (where we have to walk down to find an actual bitmap). With this patch, both cases just work. I didn't implement the crazy in-between case, just because it's complicated to set up, and is really a subset of the full-count case, which we do cover. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	9 years ago
Jeff King	2824e1841b	list-objects: pass full pathname to callbacks 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>	9 years ago
Jeff King	dc06dc8800	list-objects: drop name_path entirely 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>	9 years ago
Jeff King	de1e67d070	list-objects: pass full pathname to callbacks 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>	9 years ago
Jeff King	bd64516aca	list-objects: drop name_path entirely 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>	9 years ago
brian m. carlson	ed1c9977cb	Remove get_object_hash. Convert all instances of get_object_hash to use an appropriate reference to the hash member of the oid member of struct object. This provides no functional change, as it is essentially a macro substitution. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Jeff King <peff@peff.net>	9 years ago
brian m. carlson	f2fd0760f6	Convert struct object to object_id struct object is one of the major data structures dealing with object IDs. Convert it to use struct object_id instead of an unsigned char array. Convert get_object_hash to refer to the new member as well. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Jeff King <peff@peff.net>	9 years ago

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117 Commits (e0020b2f82910f50bc697d86aff70c3796fbdc41)