kernel/git - git - PowerEL Git System

Commit Graph

Author	SHA1	Message	Date
Nguyễn Thái Ngọc Duy	d688cf07b1	tree_entry_interesting(): give meaningful names to return values It is a basic code hygiene to avoid magic constants that are unnamed. Besides, this helps extending the value later on for "interesting, but cannot decide if the entry truely matches yet" (ie. prefix matches) Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	13 years ago
Nguyễn Thái Ngọc Duy	0de1633783	tree-walk.c: do not leak internal structure in tree_entry_len() tree_entry_len() does not simply take two random arguments and return a tree length. The two pointers must point to a tree item structure, or struct name_entry. Passing random pointers will return incorrect value. Force callers to pass struct name_entry instead of two pointers (with hope that they don't manually construct struct name_entry themselves) Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	13 years ago
Junio C Hamano	2842c0f914	traverse_trees(): allow pruning with pathspec The traverse_trees() machinery is primarily meant for merging two (or more) trees, and because a merge is a full tree operation, it doesn't support any pruning with pathspec. Since `d1f2d7e` (Make run_diff_index() use unpack_trees(), not read_tree(), 2008-01-19), however, we use unpack_trees() to traverse_trees() callchain to perform "diff-index", which could waste a lot of work traversing trees outside the user-supplied pathspec, only to discard at the blob comparison level in diff-lib.c::oneway_diff() which is way too late. Signed-off-by: Junio C Hamano <gitster@pobox.com>	14 years ago
Nguyễn Thái Ngọc Duy	1376e50723	grep: drop pathspec_matches() in favor of tree_entry_interesting() Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	14 years ago
Nguyễn Thái Ngọc Duy	d38f28093e	tree_entry_interesting(): support wildcard matching never_interesting optimization is disabled if there is any wildcard pathspec, even if it only matches exactly on trees. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	14 years ago
Nguyễn Thái Ngọc Duy	48932677d6	diff-tree: convert base+baselen to writable strbuf In traversing trees, a full path is splitted into two parts: base directory and entry. They are however quite often concatenated whenever a full path is needed. Current code allocates a new buffer, do two memcpy(), use it, then release. Instead this patch turns "base" to a writable, extendable buffer. When a concatenation is needed, the callee only needs to append "entry" to base, use it, then truncate the entry out again. "base" must remain unchanged before and after entering a function. This avoids quite a bit of malloc() and memcpy(). Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	14 years ago
Nguyễn Thái Ngọc Duy	2c389fc8ec	Move tree_entry_interesting() to tree-walk.c and export it Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	14 years ago
Elijah Newren	dabb061fa3	tree-walk: Correct bitrotted comment about tree_entry() There was a code comment that referred to the "above two functions" but over time the functions immediately preceding the comment have changed. Just mention the relevant functions by name. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Elijah Newren	2244eab01b	tree-walk: Correct bitrotted comment about tree_entry() There was a code comment that referred to the "above two functions" but over time the functions immediately preceding the comment have changed. Just mention the relevant functions by name. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Matthieu Moy	e6c111b4c0	unpack_trees: group error messages by type When an error is encountered, it calls add_rejected_file() which either - directly displays the error message and stops if in plumbing mode (i.e. if show_all_errors is not initialized at 1) - or stores it so that it will be displayed at the end with display_error_msgs(), Storing the files by error type permits to have a list of files for which there is the same error instead of having a serie of almost identical errors. As each bind_overlap error combines a file and an old file, a list cannot be done, therefore, theses errors are not stored but directly displayed. Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Linus Torvalds	91e4f03604	Make 'traverse_trees()' traverse conflicting DF entries in parallel This makes the traverse_trees() entry comparator routine use the more relaxed form of name comparison that considers files and directories with the same name identical. We pass in a separate mask for just the directory entries, so that the callback routine can decide (if it wants to) to only handle one or the other type, but generally most (all?) users are expected to really want to see the case of a name 'foo' showing up in one tree as a file and in another as a directory at the same time. In particular, moving 'unpack_trees()' over to use this tree traversal mechanism requires this. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Linus Torvalds	5803c6f8a2	Add return value to 'traverse_tree()' callback This allows the callback to return an error value, but it can also specify which of the tree entries that it actually used up by returning a positive mask value. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Linus Torvalds	40d934df72	Make 'traverse_tree()' use linked structure rather than 'const char *base' This makes the calling convention a bit less obvious, but a lot more flexible. Instead of allocating and extending a new 'base' string, we just link the top-most name into a linked list of the 'info' structure when traversing a subdirectory, and we can generate the basename by following the list. Perhaps even more importantly, the linked list of info structures also gives us a place to naturally save off other information than just the directory name. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Junio C Hamano	b45563a229	rename: Break filepairs with different types. When we consider if a path has been totally rewritten, we did not touch changes from symlinks to files or vice versa. But a change that modifies even the type of a blob surely should count as a complete rewrite. While we are at it, modernise diffcore-break to be aware of gitlinks (we do not want to touch them). Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Linus Torvalds	481f0ee60e	Fix rev-list when showing objects involving submodules The function mark_tree_uninteresting() assumed that the tree entries are blob when they are not trees. This is not so. Since we do not traverse into submodules (yet), the gitlinks should be ignored. In general, we should try to start moving away from using the "S_ISLNK()" like things for internal git state. It was a mistake to just assume the numbers all were same across all systems in the first place. This implementation converts to the "object_type", and then uses a case statement. Noticed by Ilari on IRC. Test script taken from an earlier version by Dscho. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Linus Torvalds	4d1012c370	Fix rev-list when showing objects involving submodules The function mark_tree_uninteresting() assumed that the tree entries are blob when they are not trees. This is not so. Since we do not traverse into submodules (yet), the gitlinks should be ignored. In general, we should try to start moving away from using the "S_ISLNK()" like things for internal git state. It was a mistake to just assume the numbers all were same across all systems in the first place. This implementation converts to the "object_type", and then uses a case statement. Noticed by Ilari on IRC. Test script taken from an earlier version by Dscho. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Junio C Hamano	63daae47e5	Two trivial -Wcast-qual fixes Luiz Fernando N. Capitulino noticed the one in tree-walk.h where we cast away constness while computing the legnth of a tree entry. Signed-off-by: Junio C Hamano <gitster@pobox.com>	18 years ago
Matthieu Castet	0ab311d601	Remove stale non-static-inline prototype for tree_entry_extract() When `4651ece8` made the function a "static inline", it should have removd the stale prototype but everybody missed that. Thomas Glanzmann noticed this broke compilation with Forte12 compiler on his Sun boxes. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Linus Torvalds	4651ece854	Switch over tree descriptors to contain a pre-parsed entry This makes the tree descriptor contain a "struct name_entry" as part of it, and it gets filled in so that it always contains a valid entry. On some benchmarks, it improves performance by up to 15%. That makes tree entry "extract" trivial, and means that we only actually need to decode each tree entry just once: we decode the first one when we initialize the tree descriptor, and each subsequent one when doing "update_tree_entry()". In particular, this means that we don't need to do strlen() both at extract time _and_ at update time. Finally, it also allows more sharing of code (entry_extract(), that wanted a "struct name_entry", just got totally trivial, along with the "tree_entry()" function). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Linus Torvalds	6fda5e5180	Initialize tree descriptors with a helper function rather than by hand. This removes slightly more lines than it adds, but the real reason for doing this is that future optimizations will require more setup of the tree descriptor, and so we want to do it in one place. Also renamed the "desc.buf" field to "desc.buffer" just to trigger compiler errors for old-style manual initializations, making sure I didn't miss anything. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Linus Torvalds	a8c40471ab	Remove "pathlen" from "struct name_entry" Since we have the "tree_entry_len()" helper function these days, and don't need to do a full strlen(), there's no point in saving the path length - it's just redundant information. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Linus Torvalds	304de2d2d6	Avoid unnecessary strlen() calls This is a micro-optimization that grew out of the mailing list discussion about "strlen()" showing up in profiles. We used to pass regular C strings around to the low-level tree walking routines, and while this worked fine, it meant that we needed to call strlen() on strings that the caller always actually knew the size of anyway. So pass the length of the string down wih the string, and avoid unnecessary calls to strlen(). Also, when extracting a pathname from a tree entry, use "tree_entry_len()" instead of strlen(), since the length of the pathname is directly calculable from the decoded tree entry itself without having to actually do another strlen(). This shaves off another ~5-10% from some loads that are very tree intensive (notably doing commit filtering by a pathspec). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>" Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Linus Torvalds	4c068a9831	tree_entry(): new tree-walking helper function This adds a "tree_entry()" function that combines the common operation of doing a "tree_entry_extract()" + "update_tree_entry()". It also has a simplified calling convention, designed for simple loops that traverse over a whole tree: the arguments are pointers to the tree descriptor and a name_entry structure to fill in, and it returns a boolean "true" if there was an entry left to be gotten in the tree. This allows tree traversal with struct tree_desc desc; struct name_entry entry; desc.buf = tree->buffer; desc.size = tree->size; while (tree_entry(&desc, &entry) { ... use "entry.{path, sha1, mode, pathlen}" ... } which is not only shorter than writing it out in full, it's hopefully less error prone too. [ It's actually a tad faster too - we don't need to recalculate the entry pathlength in both extract and update, but need to do it only once. Also, some callers can avoid doing a "strlen()" on the result, since it's returned as part of the name_entry structure. However, by now we're talking just 1% speedup on "git-rev-list --objects --all", and we're definitely at the point where tree walking is no longer the issue any more. ] NOTE! Not everybody wants to use this new helper function, since some of the tree walkers very much on purpose do the descriptor update separately from the entry extraction. So the "extract + update" sequence still remains as the core sequence, this is just a simplified interface. We should probably add a silly two-line inline helper function for initializing the descriptor from the "struct tree" too, just to cut down on the noise from that common "desc" initializer. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago
Junio C Hamano	4dcff634e6	get_tree_entry(): make it available from tree-walk Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago
Junio C Hamano	1b0c7174a1	tree/diff header cleanup. Introduce tree-walk.[ch] and move "struct tree_desc" and associated functions from various places. Rename DIFF_FILE_CANON_MODE(mode) macro to canon_mode(mode) and move it to cache.h. This macro returns the canonicalized st_mode value in the host byte order for files, symlinks and directories -- to be compared with a tree_desc entry. create_ce_mode(mode) in cache.h is similar but is intended to be used for index entries (so it does not work for directories) and returns the value in the network byte order. Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago

24 Commits (3cc3cf970c5ce477bde78df73614d1efba2b52eb)