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* Merge branch 'kb/fast-hashmap'Junio C Hamano2014-02-27
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Improvements to our hash table to get it to meet the needs of the msysgit fscache project, with some nice performance improvements. * kb/fast-hashmap: name-hash: retire unused index_name_exists() hashmap.h: use 'unsigned int' for hash-codes everywhere test-hashmap.c: drop unnecessary #includes .gitignore: test-hashmap is a generated file read-cache.c: fix memory leaks caused by removed cache entries builtin/update-index.c: cleanup update_one fix 'git update-index --verbose --again' output remove old hash.[ch] implementation name-hash.c: remove cache entries instead of marking them CE_UNHASHED name-hash.c: use new hash map implementation for cache entries name-hash.c: remove unreferenced directory entries name-hash.c: use new hash map implementation for directories diffcore-rename.c: use new hash map implementation diffcore-rename.c: simplify finding exact renames diffcore-rename.c: move code around to prepare for the next patch buitin/describe.c: use new hash map implementation add a hashtable implementation that supports O(1) removal submodule: don't access the .gitmodules cache entry after removing it
| * submodule: don't access the .gitmodules cache entry after removing itJens Lehmann2013-11-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 5fee995244e introduced the stage_updated_gitmodules() function to add submodule configuration updates to the index. It assumed that even after calling remove_cache_entry_at() the same cache entry would still be valid. This was true in the old days, as cache entries could never be freed, but that is not so sure in the present as there is ongoing work to free removed cache entries, which makes this code segfault. Fix that by calling add_file_to_cache() instead of open coding it. Also remove the "could not find .gitmodules in index" warning, as that won't happen in regular use cases (and by then just silently adding it to the index we do the right thing). Thanks-to: Karsten Blees <karsten.blees@gmail.com> Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | replace {pre,suf}fixcmp() with {starts,ends}_with()Christian Couder2013-12-05
|/ | | | | | | | | | | | | | | | | | | | | | | Leaving only the function definitions and declarations so that any new topic in flight can still make use of the old functions, replace existing uses of the prefixcmp() and suffixcmp() with new API functions. The change can be recreated by mechanically applying this: $ git grep -l -e prefixcmp -e suffixcmp -- \*.c | grep -v strbuf\\.c | xargs perl -pi -e ' s|!prefixcmp\(|starts_with\(|g; s|prefixcmp\(|!starts_with\(|g; s|!suffixcmp\(|ends_with\(|g; s|suffixcmp\(|!ends_with\(|g; ' on the result of preparatory changes in this series. Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'jl/submodule-mv'Junio C Hamano2013-09-09
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git mv A B" when moving a submodule A does "the right thing", inclusing relocating its working tree and adjusting the paths in the .gitmodules file. * jl/submodule-mv: (53 commits) rm: delete .gitmodules entry of submodules removed from the work tree mv: update the path entry in .gitmodules for moved submodules submodule.c: add .gitmodules staging helper functions mv: move submodules using a gitfile mv: move submodules together with their work trees rm: do not set a variable twice without intermediate reading. t6131 - skip tests if on case-insensitive file system parse_pathspec: accept :(icase)path syntax pathspec: support :(glob) syntax pathspec: make --literal-pathspecs disable pathspec magic pathspec: support :(literal) syntax for noglob pathspec kill limit_pathspec_to_literal() as it's only used by parse_pathspec() parse_pathspec: preserve prefix length via PATHSPEC_PREFIX_ORIGIN parse_pathspec: make sure the prefix part is wildcard-free rename field "raw" to "_raw" in struct pathspec tree-diff: remove the use of pathspec's raw[] in follow-rename codepath remove match_pathspec() in favor of match_pathspec_depth() remove init_pathspec() in favor of parse_pathspec() remove diff_tree_{setup,release}_paths convert common_prefix() to use struct pathspec ...
| * rm: delete .gitmodules entry of submodules removed from the work treeJens Lehmann2013-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently using "git rm" on a submodule removes the submodule's work tree from that of the superproject and the gitlink from the index. But the submodule's section in .gitmodules is left untouched, which is a leftover of the now removed submodule and might irritate users (as opposed to the setting in .git/config, this must stay as a reminder that the user showed interest in this submodule so it will be repopulated later when an older commit is checked out). Let "git rm" help the user by not only removing the submodule from the work tree but by also removing the "submodule.<submodule name>" section from the .gitmodules file and stage both. This doesn't happen when the "--cached" option is used, as it would modify the work tree. This also silently does nothing when no .gitmodules file is found and only issues a warning when it doesn't have a section for this submodule. This is because the user might just use plain gitlinks without the .gitmodules file or has already removed the section by hand before issuing the "git rm" command (in which case the warning reminds him that rm would have done that for him). Only when .gitmodules is found and contains merge conflicts the rm command will fail and tell the user to resolve the conflict before trying again. Also extend the man page to inform the user about this new feature. While at it promote the submodule sub-section to a chapter as it made not much sense under "REMOVING FILES THAT HAVE DISAPPEARED FROM THE FILESYSTEM". In t7610 three uses of "git rm submod" had to be replaced with "git rm --cached submod" because that test expects .gitmodules and the work tree to stay untouched. Also in t7400 the tests for the remaining settings in the .gitmodules file had to be changed to assert that these settings are missing. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * mv: update the path entry in .gitmodules for moved submodulesJens Lehmann2013-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently using "git mv" on a submodule moves the submodule's work tree in that of the superproject. But the submodule's path setting in .gitmodules is left untouched, which is now inconsistent with the work tree and makes git commands that rely on the proper path -> name mapping (like status and diff) behave strangely. Let "git mv" help here by not only moving the submodule's work tree but also updating the "submodule.<submodule name>.path" setting from the .gitmodules file and stage both. This doesn't happen when no .gitmodules file is found and only issues a warning when it doesn't have a section for this submodule. This is because the user might just use plain gitlinks without the .gitmodules file or has already updated the path setting by hand before issuing the "git mv" command (in which case the warning reminds him that mv would have done that for him). Only when .gitmodules is found and contains merge conflicts the mv command will fail and tell the user to resolve the conflict before trying again. Also extend the man page to inform the user about this new feature. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * submodule.c: add .gitmodules staging helper functionsJens Lehmann2013-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | Add the new is_staging_gitmodules_ok() and stage_updated_gitmodules() functions to submodule.c. The first makes it possible for call sites to see if the .gitmodules file did contain any unstaged modifications they would accidentally stage in addition to those they intend to stage themselves. The second function stages all modifications to the .gitmodules file, both will be used by subsequent patches for the mv and rm commands. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * mv: move submodules using a gitfileJens Lehmann2013-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When moving a submodule which uses a gitfile to point to the git directory stored in .git/modules/<name> of the superproject two changes must be made to make the submodule work: the .git file and the core.worktree setting must be adjusted to point from work tree to git directory and back. Achieve that by remembering which submodule uses a gitfile by storing the result of read_gitfile() of each submodule. If that is not NULL the new function connect_work_tree_and_git_dir() is called after renaming the submodule's work tree which updates the two settings to the new values. Extend the man page to inform the user about that feature (and while at it change the description to not talk about a script anymore, as mv is a builtin for quite some time now). Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'jl/some-submodule-config-are-not-boolean'Junio C Hamano2013-09-04
|\ \ | | | | | | | | | | | | * jl/some-submodule-config-are-not-boolean: avoid segfault on submodule.*.path set to an empty "true"
| * | avoid segfault on submodule.*.path set to an empty "true"Jharrod LaFon2013-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Git fails due to a segmentation fault if a submodule path is empty. Here is an example .gitmodules that will cause a segmentation fault: [submodule "foo-module"] path url = http://host/repo.git $ git status Segmentation fault (core dumped) This is because the parsing of "submodule.*.path" is not prepared to see a value-less "true" and assumes that the value is always non-NULL (parsing of "ignore" has the same problem). Fix it by checking the NULL-ness of value and complain with config_error_nonbool(). Signed-off-by: Jharrod LaFon <jlafon@eyesopen.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'nd/const-struct-cache-entry'Junio C Hamano2013-07-22
|\ \ \ | |_|/ |/| | | | | | | | * nd/const-struct-cache-entry: Convert "struct cache_entry *" to "const ..." wherever possible
| * | Convert "struct cache_entry *" to "const ..." wherever possibleNguyễn Thái Ngọc Duy2013-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I attempted to make index_state->cache[] a "const struct cache_entry **" to find out how existing entries in index are modified and where. The question I have is what do we do if we really need to keep track of on-disk changes in the index. The result is - diff-lib.c: setting CE_UPTODATE - name-hash.c: setting CE_HASHED - preload-index.c, read-cache.c, unpack-trees.c and builtin/update-index: obvious - entry.c: write_entry() may refresh the checked out entry via fill_stat_cache_info(). This causes "non-const struct cache_entry *" in builtin/apply.c, builtin/checkout-index.c and builtin/checkout.c - builtin/ls-files.c: --with-tree changes stagemask and may set CE_UPDATE Of these, write_entry() and its call sites are probably most interesting because it modifies on-disk info. But this is stat info and can be retrieved via refresh, at least for porcelain commands. Other just uses ce_flags for local purposes. So, keeping track of "dirty" entries is just a matter of setting a flag in index modification functions exposed by read-cache.c. Except unpack-trees, the rest of the code base does not do anything funny behind read-cache's back. The actual patch is less valueable than the summary above. But if anyone wants to re-identify the above sites. Applying this patch, then this: diff --git a/cache.h b/cache.h index 430d021..1692891 100644 --- a/cache.h +++ b/cache.h @@ -267,7 +267,7 @@ static inline unsigned int canon_mode(unsigned int mode) #define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1) struct index_state { - struct cache_entry **cache; + const struct cache_entry **cache; unsigned int version; unsigned int cache_nr, cache_alloc, cache_changed; struct string_list *resolve_undo; will help quickly identify them without bogus warnings. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'as/log-output-encoding-in-user-format'Junio C Hamano2013-07-12
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "log --format=" did not honor i18n.logoutputencoding configuration and this attempts to fix it. * as/log-output-encoding-in-user-format: t4205 (log-pretty-formats): avoid using `sed` t6006 (rev-list-format): add tests for "%b" and "%s" for the case i18n.commitEncoding is not set t4205, t6006, t7102: make functions better readable t4205 (log-pretty-formats): revert back single quotes t4041, t4205, t6006, t7102: use iso8859-1 rather than iso-8859-1 t4205: replace .\+ with ..* in sed commands pretty: --format output should honor logOutputEncoding pretty: Add failing tests: --format output should honor logOutputEncoding t4205 (log-pretty-formats): don't hardcode SHA-1 in expected outputs t7102 (reset): don't hardcode SHA-1 in expected outputs t6006 (rev-list-format): don't hardcode SHA-1 in expected outputs
| * | pretty: --format output should honor logOutputEncodingAlexey Shumkin2013-06-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One can set an alias $ git config [--global] alias.lg "log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cd) %C(bold blue)<%an>%Creset' --abbrev-commit --date=local" to see the log as a pretty tree (like *gitk* but in a terminal). However, log messages written in an encoding i18n.commitEncoding which differs from terminal encoding are shown corrupted even when i18n.logOutputEncoding and terminal encoding are the same (e.g. log messages committed on a Cygwin box with Windows-1251 encoding seen on a Linux box with a UTF-8 encoding and vice versa). To simplify an example we can say the following two commands are expected to give the same output to a terminal: $ git log --oneline --no-color $ git log --pretty=format:'%h %s' However, the former pays attention to i18n.logOutputEncoding configuration, while the latter does not when it formats "%s". The same corruption is true for $ git diff --submodule=log and $ git rev-list --pretty=format:%s HEAD and $ git reset --hard This patch makes pretty --format honor logOutputEncoding when it formats log message. Signed-off-by: Alexey Shumkin <Alex.Crezoff@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'mh/reflife'Junio C Hamano2013-06-14
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Define memory ownership and lifetime rules for what for-each-ref feeds to its callbacks (in short, "you do not own it, so make a copy if you want to keep it"). * mh/reflife: (25 commits) refs: document the lifetime of the args passed to each_ref_fn register_ref(): make a copy of the bad reference SHA-1 exclude_existing(): set existing_refs.strdup_strings string_list_add_refs_by_glob(): add a comment about memory management string_list_add_one_ref(): rename first parameter to "refname" show_head_ref(): rename first parameter to "refname" show_head_ref(): do not shadow name of argument add_existing(): do not retain a reference to sha1 do_fetch(): clean up existing_refs before exiting do_fetch(): reduce scope of peer_item object_array_entry: fix memory handling of the name field find_first_merges(): remove unnecessary code find_first_merges(): initialize merges variable using initializer fsck: don't put a void*-shaped peg in a char*-shaped hole object_array_remove_duplicates(): rewrite to reduce copying revision: use object_array_filter() in implementation of gc_boundary() object_array: add function object_array_filter() revision: split some overly-long lines cmd_diff(): make it obvious which cases are exclusive of each other cmd_diff(): rename local variable "list" -> "entry" ...
| * | find_first_merges(): remove unnecessary codeMichael Haggerty2013-05-28
| | | | | | | | | | | | | | | | | | | | | | | | No names are ever set for the object_array_entries in merges, so there is no need to pretend to copy them to the result array. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | find_first_merges(): initialize merges variable using initializerMichael Haggerty2013-05-28
| | | | | | | | | | | | | | | Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | submodule: remove redundant check for the_index.initializedRené Scharfe2013-06-09
|/ / | | | | | | | | | | | | | | read_cache already performs the same check and returns immediately if the cache has already been loaded. Signed-off-by: René Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | submodule: print graph output next to submodule logJohn Keeping2013-04-05
|/ | | | | | | | | When running "git log -p --submodule=log", the submodule log is not indented by the graph output, although all other lines are. Fix this by prepending the current line prefix to each line of the submodule log. Signed-off-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* submodule: clarify logic in show_submodule_summaryJeff King2013-03-22
| | | | | | | | | | | | | | | | | | | | | | | | There are two uses of the "left" and "right" commit variables that make it hard to be sure what values they have (both for the reader, and for gcc, which wrongly complains that they might be used uninitialized). The function starts with a cascading if statement, checking that the input sha1s exist, and finally working up to preparing a revision walk. We only prepare the walk if the cascading conditional did not find any problems, which we check by seeing whether it set the "message" variable or not. It's simpler and more obvious to just add a condition to the end of the cascade. Later, we check the same "message" variable when deciding whether to clear commit marks on the left/right commits; if it is set, we presumably never started the walk. This is wrong, though; we might have started the walk and munged commit flags, only to encounter an error afterwards. We should always clear the flags on left/right if they exist, whether the walk was successful or not. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* submodule: simplify memory handling in config parsingJeff King2013-01-23
| | | | | | | | | | | | | | | | | | | | | We keep a strbuf for the name of the submodule, even though we only ever add one string to it. Let's just use xmemdupz instead, which is slightly more efficient and makes it easier to follow what is going on. Unfortunately, we still end up having to deal with some memory ownership issues in some code branches, as we have to allocate the string in order to do a string list lookup, and then only sometimes want to hand ownership of that string over to the string_list. Still, making that explicit in the code (as opposed to sometimes detaching the strbuf, and then always releasing it) makes it a little more obvious what is going on. Signed-off-by: Jeff King <peff@peff.net> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Acked-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* submodule: use parse_config_key when parsing configJeff King2013-01-23
| | | | | | | | | | | | | | | | | | | | | This makes the code a lot simpler to read by dropping a whole bunch of constant offsets. As a bonus, it means we also feed the whole config variable name to our error functions: [before] $ git -c submodule.foo.fetchrecursesubmodules=bogus checkout fatal: bad foo.fetchrecursesubmodules argument: bogus [after] $ git -c submodule.foo.fetchrecursesubmodules=bogus checkout fatal: bad submodule.foo.fetchrecursesubmodules argument: bogus Signed-off-by: Jeff King <peff@peff.net> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Acked-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* submodule: display summary header in boldRamkumar Ramachandra2012-11-18
| | | | | | | | | | | | | | | | | | | | | Currently, 'git diff --submodule' displays output with a bold diff header for non-submodules. So this part is in bold: diff --git a/file1 b/file1 index 30b2f6c..2638038 100644 --- a/file1 +++ b/file1 For submodules, the header looks like this: Submodule submodule1 012b072..248d0fd: Unfortunately, it's easy to miss in the output because it's not bold. Change this. Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'jl/submodule-rm'Jeff King2012-10-29
|\ | | | | | | | | | | | | | | | | | | | | | | | | "git rm submodule" cannot blindly remove a submodule directory as its working tree may have local changes, and worse yet, it may even have its repository embedded in it. Teach it some special cases where it is safe to remove a submodule, specifically, when there is no local changes in the submodule working tree, and its repository is not embedded in its working tree but is elsewhere and uses the gitfile mechanism to point at it. * jl/submodule-rm: submodule: teach rm to remove submodules unless they contain a git directory
| * submodule: teach rm to remove submodules unless they contain a git directoryJens Lehmann2012-09-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently using "git rm" on a submodule - populated or not - fails with this error: fatal: git rm: '<submodule path>': Is a directory This made sense in the past as there was no way to remove a submodule without possibly removing unpushed parts of the submodule's history contained in its .git directory too, so erroring out here protected the user from possible loss of data. But submodules cloned with a recent git version do not contain the .git directory anymore, they use a gitfile to point to their git directory which is safely stored inside the superproject's .git directory. The work tree of these submodules can safely be removed without losing history, so let's teach git to do so. Using rm on an unpopulated submodule now removes the empty directory from the work tree and the gitlink from the index. If the submodule's directory is missing from the work tree, it will still be removed from the index. Using rm on a populated submodule using a gitfile will apply the usual checks for work tree modification adapted to submodules (unless forced). For a submodule that means that the HEAD is the same as recorded in the index, no tracked files are modified and no untracked files that aren't ignored are present in the submodules work tree (ignored files are deemed expendable and won't stop a submodule's work tree from being removed). That logic has to be applied in all nested submodules too. Using rm on a submodule which has its .git directory inside the work trees top level directory will just error out like it did before to protect the repository, even when forced. In the future git could either provide a message informing the user to convert the submodule to use a gitfile or even attempt to do the conversion itself, but that is not part of this change. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'jk/argv-array'Junio C Hamano2012-09-11
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | Use argv-array API in "git fetch" implementation. * jk/argv-array: submodule: use argv_array instead of hand-building arrays fetch: use argv_array instead of hand-building arrays argv-array: fix bogus cast when freeing array argv-array: add pop function
| * | submodule: use argv_array instead of hand-building arraysJens Lehmann2012-09-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fetch_populated_submodules() allocates the full argv array it uses to recurse into the submodules from the number of given options plus the six argv values it is going to add. It then initializes it with those values which won't change during the iteration and copies the given options into it. Inside the loop the two argv values different for each submodule get replaced with those currently valid. However, this technique is brittle and error-prone (as the comment to explain the magic number 6 indicates), so let's replace it with an argv_array. Instead of replacing the argv values, push them to the argv_array just before the run_command() call (including the option separating them) and pop them from the argv_array right after that. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'jc/merge-bases'Junio C Hamano2012-09-11
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Optimise the "merge-base" computation a bit, and also update its users that do not need the full merge-base information to call a cheaper subset. * jc/merge-bases: reduce_heads(): reimplement on top of remove_redundant() merge-base: "--is-ancestor A B" get_merge_bases_many(): walk from many tips in parallel in_merge_bases(): use paint_down_to_common() merge_bases_many(): split out the logic to paint history in_merge_bases(): omit unnecessary redundant common ancestor reduction http-push: use in_merge_bases() for fast-forward check receive-pack: use in_merge_bases() for fast-forward check in_merge_bases(): support only one "other" commit
| * | in_merge_bases(): support only one "other" commitJunio C Hamano2012-08-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In early days of its life, I planned to make it possible to compute "is a commit contained in all of these other commits?" with this function, but it turned out that no caller needed it. Just make it take two commit objects and add a comment to say what these two functions do. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'tr/void-diff-setup-done'Junio C Hamano2012-08-22
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | Remove unnecessary code. * tr/void-diff-setup-done: diff_setup_done(): return void
| * | | diff_setup_done(): return voidThomas Rast2012-08-03
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | diff_setup_done() has historically returned an error code, but lost the last nonzero return in 943d5b7 (allow diff.renamelimit to be set regardless of -M/-C, 2006-08-09). The callers were in a pretty confused state: some actually checked for the return code, and some did not. Let it return void, and patch all callers to take this into account. This conveniently also gets rid of a handful of different(!) error messages that could never be triggered anyway. Note that the function can still die(). Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'hv/submodule-alt-odb'Junio C Hamano2012-05-23
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | When peeking into object stores of submodules, the code forgot that they might borrow objects from alternate object stores on their own. By Heiko Voigt * hv/submodule-alt-odb: teach add_submodule_odb() to look for alternates
| * | teach add_submodule_odb() to look for alternatesHeiko Voigt2012-05-14
| |/ | | | | | | | | | | | | | | Since we allow to link other object databases when loading a submodules database we should also load possible alternates. Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | push: teach --recurse-submodules the on-demand optionHeiko Voigt2012-03-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When using this option git will search for all submodules that have changed in the revisions to be send. It will then try to push the currently checked out branch of each submodule. This helps when a user has finished working on a change which involves submodules and just wants to push everything in one go. Signed-off-by: Fredrik Gustafsson <iveqy@iveqy.com> Mentored-by: Jens Lehmann <Jens.Lehmann@web.de> Mentored-by: Heiko Voigt <hvoigt@hvoigt.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Refactor submodule push check to use string list instead of integerHeiko Voigt2012-03-30
| | | | | | | | | | | | | | | | | | This allows us to tell the user which submodules have not been pushed. Additionally this is helpful when we want to automatically try to push submodules that have not been pushed. Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Teach revision walking machinery to walk multiple times sequenciallyHeiko Voigt2012-03-30
|/ | | | | | | | | | | | | Previously it was not possible to iterate revisions twice using the revision walking api. We add a reset_revision_walk() which clears the used flags. This allows us to do multiple sequencial revision walks. We add the appropriate calls to the existing submodule machinery doing revision walks. This is done to avoid surprises if future code wants to call these functions more than once during the processes lifetime. Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* submodule: use diff_tree_combined_merge() instead of diff_tree_combined()René Scharfe2011-12-17
| | | | | | | Use diff_tree_combined_merge() instead of open-coding it. Signed-off-by: René Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* use struct sha1_array in diff_tree_combined()René Scharfe2011-12-17
| | | | | | | | | Maintaining an array of hashes is easier using sha1_array than open-coding it. This patch also fixes a leak of the SHA1 array in diff_tree_combined_merge(). Signed-off-by: René Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'jl/submodule-status-failure-report'Junio C Hamano2011-12-13
|\ | | | | | | | | * jl/submodule-status-failure-report: diff/status: print submodule path when looking for changes fails
| * diff/status: print submodule path when looking for changes failsJens Lehmann2011-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | diff and status run "git status --porcelain" inside each populated submodule to see if it contains changes (unless told not to do so via config or command line option). When that fails, e.g. due to a corrupt submodule .git directory, it just prints "git status --porcelain failed" or "Could not run git status --porcelain" without giving the user a clue where that happened. Add '"in submodule %s", path' to these error strings to tell the user where exactly the problem occurred. Reported-by: Seth Robertson <in-gitvger@baka.org> Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'ab/clang-lints'Junio C Hamano2011-12-05
|\ \ | | | | | | | | | | | | | | | * ab/clang-lints: cast variable in call to free() in builtin/diff.c and submodule.c apply: get rid of useless x < 0 comparison on a size_t type
| * | cast variable in call to free() in builtin/diff.c and submodule.cÆvar Arnfjörð Bjarmason2011-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both of these free() calls are freeing a "const unsigned char (*)[20]" type while free() expects a "void *". This results in the following warning under clang 2.9: builtin/diff.c:185:7: warning: passing 'const unsigned char (*)[20]' to parameter of type 'void *' discards qualifiers free(parent); ^~~~~~ submodule.c:394:7: warning: passing 'const unsigned char (*)[20]' to parameter of type 'void *' discards qualifiers free(parents); ^~~~~~~ This free()-ing without a cast was added by Jim Meyering to builtin/diff.c in v1.7.6-rc3~4 and later by Fredrik Gustafsson in submodule.c in v1.7.7-rc1~25^2. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | submodule: Search for merges only at end of recursive mergeBrad King2011-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The submodule merge search is not useful during virtual merges because the results cannot be used automatically. Furthermore any suggestions made by the search may apply to commits different than HEAD:sub and MERGE_HEAD:sub, thus confusing the user. Skip searching for submodule merges during a virtual merge such as that between B and C while merging the heads of: B---BC / \ / A X \ / \ C---CB Run the search only when the recursion level is zero (!o->call_depth). This fixes known breakage tested in t7405-submodule-merge. Signed-off-by: Brad King <brad.king@kitware.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'jk/argv-array'Junio C Hamano2011-10-05
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * jk/argv-array: run_hook: use argv_array API checkout: use argv_array API bisect: use argv_array API quote: provide sq_dequote_to_argv_array refactor argv_array into generic code quote.h: fix bogus comment add sha1_array API docs
| * | | refactor argv_array into generic codeJeff King2011-09-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The submodule code recently grew generic code to build a dynamic argv array. Many other parts of the code can reuse this, too, so let's make it generically available. There are two enhancements not found in the original code: 1. We now handle the NULL-termination invariant properly, even when no strings have been pushed (before, you could have an empty, NULL argv). This was not a problem for the submodule code, which always pushed at least one argument, but was not sufficiently safe for generic code. 2. There is a formatted variant of the "push" function. This is a convenience function which was not needed by the submodule code, but will make it easier to port other users to the new code. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | Merge branch 'jk/maint-fetch-submodule-check-fix'Junio C Hamano2011-10-05
|\ \ \ \ | |/ / / | | / / | |/ / |/| | * jk/maint-fetch-submodule-check-fix: fetch: avoid quadratic loop checking for updated submodules
| * | fetch: avoid quadratic loop checking for updated submodulesJeff King2011-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recent versions of git can be slow to fetch repositories with a large number of refs (or when they already have a large number of refs). For example, GitHub makes pull-requests available as refs, which can lead to a large number of available refs. This slowness goes away when submodule recursion is turned off: $ git ls-remote git://github.com/rails/rails.git | wc -l 3034 [this takes ~10 seconds of CPU time to complete] git fetch --recurse-submodules=no \ git://github.com/rails/rails.git "refs/*:refs/*" [this still isn't done after 10 _minutes_ of pegging the CPU] git fetch \ git://github.com/rails/rails.git "refs/*:refs/*" You can produce a quicker and simpler test case like this: doit() { head=`git rev-parse HEAD` for i in `seq 1 $1`; do echo $head refs/heads/ref$i done >.git/packed-refs echo "==> $1" rm -rf dest git init -q --bare dest && (cd dest && time git.compile fetch -q .. refs/*:refs/*) } rm -rf repo git init -q repo && cd repo && >file && git add file && git commit -q -m one doit 100 doit 200 doit 400 doit 800 doit 1600 doit 3200 Which yields timings like: # refs seconds of CPU 100 0.06 200 0.24 400 0.95 800 3.39 1600 13.66 3200 54.09 Notice that although the number of refs doubles in each trial, the CPU time spent quadruples. The problem is that the submodule recursion code works something like: - for each ref we fetch - for each commit in git rev-list $new_sha1 --not --all - add modified submodules to list - fetch any newly referenced submodules But that means if we fetch N refs, we start N revision walks. Worse, because we use "--all", the number of refs we must process that constitute "--all" keeps growing, too. And you end up doing O(N^2) ref resolutions. Instead, this patch structures the code like this: - for each sha1 we already have - add $old_sha1 to list $old - for each ref we fetch - add $new_sha1 to list $new - for each commit in git rev-list $new --not $old - add modified submodules to list - fetch any newly referenced submodules This yields timings like: # refs seconds of CPU 100 0.00 200 0.04 400 0.04 800 0.10 1600 0.21 3200 0.39 Note that the amount of effort doubles as the number of refs doubles. Similarly, the fetch of rails.git takes about as much time as it does with --recurse-submodules=no. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Sync with 1.7.6.3Junio C Hamano2011-09-12
|\ \ \ | | | | | | | | | | | | Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * \ \ Merge branch 'jl/maint-fetch-submodule-check-fix' into maintJunio C Hamano2011-09-12
| |\ \ \ | | | | | | | | | | | | | | | | | | | | * jl/maint-fetch-submodule-check-fix: fetch: skip on-demand checking when no submodules are configured
| | * | | fetch: skip on-demand checking when no submodules are configuredJens Lehmann2011-09-09
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It makes no sense to do the - possibly very expensive - call to "rev-list <new-ref-sha1> --not --all" in check_for_new_submodule_commits() when there aren't any submodules configured. Leave check_for_new_submodule_commits() early when no name <-> path mappings for submodules are found in the configuration. To make that work reading the configuration had to be moved further up in cmd_fetch(), as doing that after the actual fetch of the superproject was too late. Reported-by: Martin Fick <mfick@codeaurora.org> Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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