thodg/libgit2/src/refs.c

src/refs.c

Log

Author Commit Date CI Message
schu a5cd086d 2011-11-21T11:56:00 reference_rename: don't delete the reflog reference_rename used to delete an old reflog file when renaming a reference to not confuse git.git. Don't do this anymore but let the user take care of writing a reflog entry. Signed-off-by: schu <schu-github@schulog.org>
schu 64093ce5 2011-11-21T11:30:14 reference_rename: make sure to rollback Actually rollback when we can't create the new reference. Mark the rolled back reference as loose. Signed-off-by: schu <schu-github@schulog.org>
Brodie Rao 9788e72a 2011-11-16T11:39:03 refs: move GIT_PACKED_REFS_FILE_MODE to refs.h as GIT_PACKEDREFS_FILE_MODE This groups the #define with the other ref-related file modes, and it makes the name consistent with the other packed-refs definitions.
Brodie Rao 7096d0f9 2011-11-16T11:36:13 refs: use 0666 permissions when writing packed-refs, not 0644 This matches stock Git's behavior.
Carlos Martín Nieto 657a3951 2011-11-07T20:32:03 Write packed-refs with 0644 permissions Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>
Carlos Martín Nieto 718eb4b8 2011-11-07T20:06:01 Reword packed-refs error messages so they're easier to track down Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>
Vicent Marti d4a0b124 2011-10-30T21:58:33 refs: Partial rewrite for read-only refs This new version of the references code is significantly faster and hopefully easier to read. External API stays the same. A new method `git_reference_reload()` has been added to force updating a memory reference from disk. In-memory references are no longer updated automagically -- this was killing us. If a reference is deleted externally and the user doesn't reload the memory object, nothing critical happens: any functions using that reference should fail gracefully (e.g. deletion, renaming, and so on). All generated references from the API are read only and must be free'd by the user. There is no reference counting and no traces of generated references are kept in the library. There is no longer an internal representation for references. There is only one reference struct `git_reference`, and symbolic/oid targets are stored inside an union. Packfile references are stored using an optimized struct with flex array for reference names. This should significantly reduce the memory cost of loading the packfile from disk.
schu 549bbd13 2011-08-13T18:14:39 git_reference_rename: cleanup reference renaming git_reference_rename() didn't properly cleanup old references given by the user to not break some ugly old tests. Since references don't point to libgit's internal cache anymore we can cleanup git_reference_rename() to be somewhat less messy. Signed-off-by: schu <schu-github@schulog.org>
schu a46ec457 2011-08-10T16:19:42 refs: split internal and external references Currently libgit2 shares pointers to its internal reference cache with the user. This leads to several problems like invalidation of reference pointers when reordering the cache or manipulation of the cache from user side. Give each user its own git_reference instead of leaking the internal representation (struct reference). Add the following new API functions: * git_reference_free * git_reference_is_packed Signed-off-by: schu <schu-github@schulog.org>
Vicent Martí 89fb8f02 2011-10-28T19:04:23 Merge pull request #456 from brodie/perm-fixes Create objects, indexes, and directories with the right file permissions
Vicent Marti 3286c408 2011-10-28T14:51:13 global: Properly use `git__` memory wrappers Ensure that all memory related functions (malloc, calloc, strdup, free, etc) are using their respective `git__` wrappers.
Brodie Rao 01ad7b3a 2011-09-06T15:48:45 *: correct and codify various file permissions The following files now have 0444 permissions: - loose objects - pack indexes - pack files - packs downloaded by fetch - packs downloaded by the HTTP transport And the following files now have 0666 permissions: - config files - repository indexes - reflogs - refs This brings libgit2 more in line with Git. Note that git_filebuf_commit() and git_filebuf_commit_at() have both gained a new mode parameter. The latter change fixes an important issue where filebufs created with GIT_FILEBUF_TEMPORARY received 0600 permissions (due to mkstemp(3) usage). Now we chmod() the file before renaming it into place. Tests have been added to confirm that new commit, tag, and tree objects are created with the right permissions. I don't have access to Windows, so for now I've guarded the tests with "#ifndef GIT_WIN32".
Carlos Martín Nieto 517bda19 2011-10-04T00:30:01 fetch: store FETCH_HEAD We should always save the remote's HEAD as FETCH_HEAD locally. Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>
schu 472fa08f 2011-09-30T10:31:41 refs.c: fix reference_rename 6c8b458 removed an "unused" variable needed for git_hashtable_insert2(), causing a segfault in reference_rename(). Instead, use git_hashtable_insert(). Signed-off-by: schu <schu-github@schulog.org>
Vicent Marti 6c8b458d 2011-09-29T17:04:45 mingw: Fix compilation warnings
schu 93fdbe00 2011-09-20T11:11:59 refs: fix git_reference_rename() reference_rename() recently failed when renaming an existing reference refs/heads/foo/bar -> refs/heads/foo because of a change in the underlying functions / error codes. Fixes #412. Signed-off-by: schu <schu-github@schulog.org>
Vicent Martí 71a4c1f1 2011-09-18T20:07:59 Merge pull request #384 from kiryl/warnings Add more -W flags to CFLAGS
Vicent Marti 87d9869f 2011-09-19T03:34:49 Tabify everything There were quite a few places were spaces were being used instead of tabs. Try to catch them all. This should hopefully not break anything. Except for `git blame`. Oh well.
Vicent Marti bb742ede 2011-09-19T01:54:32 Cleanup legal data 1. The license header is technically not valid if it doesn't have a copyright signature. 2. The COPYING file has been updated with the different licenses used in the project. 3. The full GPLv2 header in each file annoys me.
Kirill A. Shutemov d568d585 2011-08-30T23:55:22 CMakefile: add -Wmissing-prototypes and fix warnings Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
schu d4958b88 2011-08-17T15:58:03 refs.c: remove two lines of dead code Signed-off-by: schu <schu-github@schulog.org>
Carlos Martín Nieto 50a8fd03 2011-08-16T18:16:44 Fix the reference character check for Unicode We need to do an unsigned comparison, as otherwise UTF-8 characters might look like they have the sign bit set and the check will fail. Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
nulltoken d1f34693 2011-08-09T12:07:47 util: Add git__strcmp_cb() wrapper We don't want direct pointers to the CRT on Windows, we may get stdcall conflicts.
Vicent Marti f6867e63 2011-08-08T16:56:28 Fix compilation in Windows
Vicent Martí cb1c7563 2011-07-28T05:32:47 Merge pull request #335 from carlosmn/read-updated Don't stat so much when reading references
Kirill A. Shutemov b75bec94 2011-07-15T18:24:35 refs: fix cast warning /home/kas/git/public/libgit2/src/refs.c: In function ‘normalize_name’: /home/kas/git/public/libgit2/src/refs.c:1681:12: warning: cast discards ‘__attribute__((const))’ qualifier from pointer target type [-Wcast-qual] Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Carlos Martín Nieto c4982328 2011-07-23T12:09:51 refs: don't stat so much In reference_read we stat a file and then call futils which stats it again. Use git_futils_readbuffer_updated to avoid the extra stat call. This introduces another parameter which is used to tell the caller whether the file was read or not. Modify the callers to take advantage of this new feature. This change removes ~140 stat calls from the test suite. Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Kirill A. Shutemov 5c6ae009 2011-07-18T01:54:40 refs: fix memory leak on rename Current implementation of git_reference_rename() removes 'ref' from loose cache, but not frees it. In result 'ref' is not reachable any more and we have got memory leak. Let's re-add 'ref' with corrected name to loose cache instead of 'new_ref' and free 'new_ref' properly. 'rollback' path seems leak too. git_reference_rename() need to be rewritten for proper resource management. Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
schu ca6f203c 2011-07-12T17:53:22 reference_rename: make sure old_name gets freed Signed-off-by: schu <schu-github@schulog.org>
schu 73294339 2011-07-07T21:24:12 reference_rename: fix flaw in force-renaming reference_rename didn't respect the force flag. Fixed. Reported-by: nulltoken <emeric.fermas@gmail.com> Signed-off-by: schu <schu-github@schulog.org>
Vicent Marti de18f276 2011-07-07T01:46:20 vector: Timsort all of the things Drop the GLibc implementation of Merge Sort and replace it with Timsort. The algorithm has been tuned to work on arrays of pointers (void **), so there's no longer a need to abstract the byte-width of each element in the array. All the comparison callbacks now take pointers-to-elements, not pointers-to-pointers, so there's now one less level of dereferencing. E.g. int index_cmp(const void *a, const void *b) { - const git_index_entry *entry_a = *(const git_index_entry **)(a); + const git_index_entry *entry_a = (const git_index_entry *)(a); The result is up to a 40% speed-up when sorting vectors. Memory usage remains lineal. A new `bsearch` implementation has been added, whose callback also supplies pointer-to-elements, to uniform the Vector API again.
Vicent Marti 858dba58 2011-07-06T18:08:13 refs: Cleanup reference renaming `git_futils_rmdir_r`: rename, clean up. `git_reference_rename`: cleanup. Do not use 3x4096 buffers on the stack or things will get ugly very fast. We can reuse the same buffer.
schu 0ffcf78a 2011-06-14T15:16:43 reference_rename: git compliant reference renaming So far libgit2 didn't handle the following scenarios: * Rename of reference m -> m/m * Rename of reference n/n -> n Fixed. Since we don't write reflogs, we have to delete any old reflog for the renamed reference. Otherwise git.git will possibly fail when it finds invalid logs. Reported-by: nulltoken <emeric.fermas@gmail.com> Signed-off-by: schu <schu-github@schulog.org>
Vicent Marti f79026b4 2011-07-04T11:43:34 fileops: Cleanup Cleaned up the structure of the whole OS-abstraction layer. fileops.c now contains a set of utility methods for file management used by the library. These are abstractions on top of the original POSIX calls. There's a new file called `posix.c` that contains emulations/reimplementations of all the POSIX calls the library uses. These are prefixed with `p_`. There's a specific posix file for each platform (win32 and unix). All the path-related methods have been moved from `utils.c` to `path.c` and have their own prefix.
Kirill A. Shutemov 932d1baf 2011-06-30T19:52:34 cleanup: remove trailing spaces Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Vicent Marti 637edc9c 2011-06-30T20:53:59 refs: Remove bogus assertion The assertion in line 360 was there to check that only loose refs were being written as loose, but there are times when we need to re-write a packed reference as loose.
Vicent Marti 7376ad99 2011-06-29T11:01:35 refs: Remove duplicate rename method `git_reference_rename` now takes a `force` flag
Vicent Marti 9525e47d 2011-06-28T19:43:36 refs: Remove unused declarations
Vicent Marti d5afc039 2011-06-28T19:15:48 Remove redundant methods from the API A bunch of redundant methods have been removed from the external API. - All the reference/tag creation methods with `_f` are gone. The force flag is now passed as an argument to the normal create methods. - All the different commit creation methods are gone; commit creation now always requires a `git_commit` pointer for parents and a `git_tree` pointer for tree, to ensure that corrupted commits cannot be generated. - All the different tag creation methods are gone; tag creation now always requires a `git_object` pointer to ensure that tags are not created to inexisting objects.
Vicent Marti 3101a3e5 2011-06-23T02:28:29 refs: Do not overflow when normalizing refnames
Carlos Martín Nieto e7e0e20f 2011-06-16T16:39:20 Simplify loose ref writing There is no need to store the format outselves, as the library provides git_filebuf_printf which takes care of the formatting itself. Also get rid of an use of strcat + strcpy which is always a nice thing. Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Vicent Marti fa48608e 2011-06-16T02:36:21 oid: Rename methods Yeah. Finally. Fuck the old names, this ain't POSIX and they don't make any sense at all.
Vicent Marti 43521d06 2011-06-16T02:27:43 refs: Rename git_referece_listcb to _foreach Same name as `git_config_foreach`
Vicent Martí a5aa5bd1 2011-06-07T07:04:51 Merge pull request #245 from schu/use-normalized rename-reference: use normalized path
schu 52b188f6 2011-06-07T14:18:20 rename-reference: use normalized path Signed-off-by: schu <schu-github@schulog.org>
nulltoken f120e92b 2011-06-07T08:41:33 Fix compilation warnings in MSVC
Vicent Martí 2c9e7fa3 2011-06-06T18:24:37 Merge pull request #232 from schu/ref-available-cb reference_rename: respect all references v2
Vicent Marti 2b397327 2011-06-06T01:54:25 refs: Improve error messages
schu 76b15cb1 2011-06-05T20:47:30 Raise GIT_EEXISTS in case of conflicting ref names instead of passing the error returned by the subsystem; clarify error message. Fix tiny typo. Signed-off-by: schu <schu-github@schulog.org>
schu 1b6d8163 2011-06-05T19:22:32 Teach reference_rename() to really respect other references Add a new function reference_available() to check if a reference name actually is free and can be used. Signed-off-by: schu <schu-github@schulog.org>
Vicent Marti 0d5d5190 2011-05-23T21:37:48 refs: Reword errors
Jakob Pfender 5bdf7b9f 2011-05-19T14:36:52 refs.c: Move to new error handling mechanism
Vicent Marti fa59f18d 2011-05-09T20:54:04 Change error handling mechanism once again Ok, this is the real deal. Hopefully. Here's how it's going to work: - One main method, called `git__throw`, that sets the error code and error message when an error happens. This method must be called in every single place where an error code was being returned previously, setting an error message instead. Example, instead of: return GIT_EOBJCORRUPTED; Use: return git__throw(GIT_EOBJCORRUPTED, "The object is missing a finalizing line feed"); And instead of: [...] { error = GIT_EOBJCORRUPTED; goto cleanup; } Use: [...] { error = git__throw(GIT_EOBJCORRUPTED, "What an error!"); goto cleanup; } The **only** exception to this are the allocation methods, which return NULL on failure but already set the message manually. /* only place where an error code can be returned directly, because the error message has already been set by the wrapper */ if (foo == NULL) return GIT_ENOMEM; - One secondary method, called `git__rethrow`, which can be used to fine-grain an error message and build an error stack. Example, instead of: if ((error = foobar(baz)) < GIT_SUCCESS) return error; You can now do: if ((error = foobar(baz)) < GIT_SUCCESS) return git__rethrow(error, "Failed to do a major operation"); The return of the `git_lasterror` method will be a string in the shape of: "Failed to do a major operation. (Failed to do an internal operation)" E.g. "Failed to open the index. (Not enough permissions to access '/path/to/index')." NOTE: do not abuse this method. Try to write all `git__throw` messages in a descriptive manner, to avoid having to rethrow them to clarify their meaning. This method should only be used in the places where the original error message set by a subroutine is not specific enough. It is encouraged to continue using this style as much possible to enforce error propagation: if ((error = foobar(baz)) < GIT_SUCCESS) return error; /* `foobar` has set an error message, and we are just propagating it */ The error handling revamp will take place in two phases: - Phase 1: Replace all pieces of code that return direct error codes with calls to `git__throw`. This can be done semi-automatically using `ack` to locate all the error codes that must be replaced. - Phase 2: Add some `git__rethrow` calls in those cases where the original error messages are not specific enough. Phase 1 is the main goal. A minor libgit2 release will be shipped once Phase 1 is ready, and the work will start on gradually improving the error handling mechanism by refining specific error messages. OTHER NOTES: - When writing error messages, please refrain from using weasel words. They add verbosity to the message without giving any real information. (<3 Emeric) E.g. "The reference file appears to be missing a carriage return" Nope. "The reference file is missing a carriage return" Yes. - When calling `git__throw`, please try to use more generic error codes so we can eventually reduce the list of error codes to something more reasonable. Feel free to add new, more generic error codes if these are going to replace several of the old ones. E.g. return GIT_EREFCORRUPTED; Can be turned into: return git__throw(GIT_EOBJCORRUPTED, "The reference is corrupted");
Vicent Martí cc3b82e3 2011-05-02T15:29:50 Merge pull request #151 from carlosmn/root-commit. Support root commits
Vicent Marti 1648fbd3 2011-05-02T01:12:53 Re-apply missing patches
Carlos Martín Nieto 68a146c1 2011-04-29T11:45:42 refs: don't loose info on resolve error Typical use is git_reference_resolve(&ref, ref). Currently, if there is an error, ref will point to NULL, causing the user to lose that reference. Always update resolved_ref instead of just on finding an OID ref, storing the last valid reference in it. This change helps simplify the code for allowing root commits. Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
schu 402a47a7 2011-04-26T11:29:05 Fix -Wunused-but-set-variable warnings As of gcc 4.6 -Wall includes -Wunused-but-set-variable. Use GIT_UNUSED or remove actually unused variables to prevent those warnings.
Jakob Pfender df30eac1 2011-04-21T10:38:37 refs: Allow MERGE_HEAD in normalize_name() Do not return with EINVALIDREFNAME when trying to normalize MERGE_HEAD's name.
Carlos Martín Nieto 1bfa053e 2011-04-13T21:57:35 Close an object in packed_find_peel Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Vicent Marti d79f1da6 2011-04-08T12:14:33 refs: Fix issue when packing weak tags Weak tags (e.g. tags that point directly to a normal object instead of a tag object) were failing to be packed.
Carlos Martín Nieto 83c95128 2011-03-24T14:15:00 normalize_name: allow more references under refs/ Allow any well-formed reference name to live under refs/ removing the condition that they be under refs/{heads,tags,remotes}/ as was the design of git. An exception is made for HEAD which is allowed to contain an OID reference in detached HEAD state. Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Vicent Marti 9a53df7e 2011-03-29T19:40:02 refs: Don't allow references to inexistent OIDs
Vicent Marti 95cde17c 2011-03-29T19:22:21 Enforce coding conventions in refs.c Internal methods are static and without the git prefix. 'Force' methods have a `_f` prefix to match the other 'force' methods.
Carlos Martín Nieto dad4a4d5 2011-03-29T10:47:48 rename: don't return early if the target ref exists Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Carlos Martín Nieto fa204962 2011-03-28T12:00:50 Allow forcing the creation or renaming of references Add internal reference create and rename functions which take a force parameter, telling them to overwrite an existing reference if it exists. These functions try to update the reference if it's of the same type as the one it's going to be replaced by. Otherwise the old reference becomes invalid. Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Vicent Marti 09e8de0f 2011-03-25T23:53:38 New external API method: `git_reference_listcb` List all the references in the repository, calling a custom callback for each one. The listed references may be filtered by type, or using a bitwise OR of several types. Use the magic value `GIT_REF_LISTALL` to obtain all references, including packed ones. The `callback` function will be called for each of the references in the repository, and will receive the name of the reference and the `payload` value passed to this method.
Carlos Martín Nieto 567fc1d2 2011-03-22T12:47:53 refs loose_lookup: also free the buffer on success Free the ref_file buffer at the end of the function also on success. This fixes a small memory leak.
Vicent Marti 7341bf87 2011-03-16T23:13:28 Refs are now always in-sync on disk
Vicent Marti b5abb881 2011-03-15T19:55:01 Do not segfault when listing unpacked references
Vicent Marti 7ad96e51 2011-03-15T05:38:50 Remove duplicate refs in `git_reference_listall`
Vicent Marti 7c8a7b91 2011-03-15T02:45:49 Skip the optional header in packed-refs files
Vicent Marti 00571828 2011-03-12T16:04:46 Add new method `git_reference_listall` Lists all the references in a repository. Listing may be filtered by reference type. This should applease Lord Clem.
Vicent Marti 6b2a1941 2011-03-12T23:09:16 Fix the retarded object interdependency system It's no longer retarded. All object interdependencies are stored as OIDs instead of actual objects. This should be hundreds of times faster, specially on big repositories. Heck, who knows, maye it doesn't even segfault -- wouldn't that be awesome? What has changed on the API? `git_commit_parent`, `git_commit_tree`, `git_tag_target` now return their values through a pointer-to-pointer, and have an error code. `git_commit_set_tree` and `git_tag_set_target` now return an error code and may fail. `git_repository_free__no_gc` has been deprecated because it's stupid. Since there are no longer any interdependencies between objects, we don't need internal reference counting, and GC never fails or double-free's pointers. `git_object_close` now does a very sane thing: marks an object as unused. Closed objects will be eventually free'd from the object cache based on LRU. Please use `git_object_close` from the garbage collector `destroy` method on your bindings. It's 100% safe. `git_repository_gc` is a new method that forces a garbage collector pass through the repo, to free as many LRU objects as possible. This is useful if we are running out of memory.
Vicent Marti 55ffebe3 2011-03-05T14:34:32 Fix creation of deeply-rooted references Use a new `gitfo_creat_force` that will create the full path to a file before creating it. Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti e06dd9b6 2011-03-04T15:23:52 Fix 'possibly uninitialized variable' warning
Vicent Marti 86d7e1ca 2011-02-28T12:46:13 Fix searching in git_vector We now store only one sorting callback that does entry comparison. This is used when sorting the entries using a quicksort, and when looking for a specific entry with the new search methods. The following search methods now exist: git_vector_search(vector, entry) git_vector_search2(vector, custom_search_callback, key) git_vector_bsearch(vector, entry) git_vector_bsearch2(vector, custom_search_callback, key) The sorting state of the vector is now stored internally. Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 5de079b8 2011-02-28T12:12:26 Change the object creation/lookup API The methods previously known as git_repository_lookup git_repository_newobject git_repository_lookup_ref are now part of their respective namespaces: git_object_lookup git_object_new git_reference_lookup This makes the API more consistent with the new references API. Signed-off-by: Vicent Marti <tanoku@gmail.com>
nulltoken 5ad0351d 2011-03-03T19:58:07 Fix reference removal: remove packed refs together with loose ones
nulltoken 8f90ced5 2011-03-03T19:55:48 Fix corner case in reference renaming Renaming a packed reference should not pack another reference which happens to be in both loose and pack state.
nulltoken 129007b4 2011-03-03T19:43:11 Fix refs renaming to prevent renaming with an invalid name
Vicent Marti 19a30a3f 2011-03-03T19:53:17 Add new move function, `gitfo_mv_force` Forces a move by creating the folder for the destination file, if it doesn't exist. Signed-off-by: Vicent Marti <tanoku@gmail.com>
nulltoken e2d42622 2011-03-03T19:41:27 Fix reference renaming to prevent duplicated names
nulltoken 0594e3ef 2011-03-03T19:36:54 Prevent _dirent_loose_load() from choking on empty folders
nulltoken 76f7cf70 2011-03-03T19:38:54 Fix reference renaming implementation to match standard git behavior
Vicent Marti 87d3acf4 2011-02-27T22:31:43 Finish the References API The following methods have been implemented: git_reference_packall git_reference_rename git_reference_delete The library now has full support for packed references, including partial and total writing. Internal documentation has been updated with the details. Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 86194b24 2011-02-18T21:57:53 Split packed from unpacked references These two reference types are now stored separately to eventually allow the removal/renaming of loose references and rewriting of the refs packfile. Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 32054c24 2011-02-18T18:09:19 Brush up the refs API Changed some more API details and updated documentation. Sketched API for addition/removal of entries. Signed-off-by: Vicent Marti <tanoku@gmail.com>
nulltoken 1d8cc731 2011-02-14T22:29:22 Refactored the reference creation API.
nulltoken e1be1028 2011-02-13T20:18:35 Added some more tests to ensure the correct behavior of git_reference__normalize_name().
nulltoken aa2120e9 2011-02-10T15:08:00 Added git_reference__normalize_name() along with tests.
Vicent Marti fc658755 2011-02-22T21:59:36 Rewrite git_hashtable internals The old hash table with chained buckets has been replaced by a new one using Cuckoo hashing, which offers guaranteed constant lookup times. This should improve speeds on most use cases, since hash tables in libgit2 are usually used as caches where the objects are stored once and queried several times. The Cuckoo hash implementation is based off the one in the Basekit library [1] for the IO language, but rewritten to support an arbritrary number of hashes. We currently use 3 to maximize the usage of the nodes pool. [1]: https://github.com/stevedekorte/basekit/blob/master/source/CHash.c Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 817c2820 2011-02-21T17:05:16 Rewrite all file IO for more performance The new `git_filebuf` structure provides atomic high-performance writes to disk by using a write cache, and optionally a double-buffered scheme through a worker thread (not enabled yet). Writes can be done 3-layered, like in git.git (user code -> write cache -> disk), or 2-layered, by writing directly on the cache. This makes index writing considerably faster. The `git_filebuf` structure contains all the old functionality of `git_filelock` for atomic file writes and reads. The `git_filelock` structure has been removed. Additionally, the `git_filebuf` API allows to automatically hash (SHA1) all the data as it is written to disk (hashing is done smartly on big chunks to improve performance). Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 995f9c34 2011-02-09T12:43:19 Use the new git__joinpath to build paths in methods The `git__joinpath` function has been changed to use a statically allocated buffer; we assume the buffer to be 4096 bytes, because fuck you. The new method also supports an arbritrary number of paths to join, which may come in handy in the future. Some methods which were manually joining paths with `strcpy` now use the new function, namely those in `index.c` and `refs.c`. Based on Emeric Fermas' original patch, which was using the old `git__joinpath` because I'm stupid. Thanks! Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti ddc9e79a 2011-02-02T06:16:50 Fix more issues with Win32 EOL Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti ff5873ad 2011-02-02T04:01:14 Fix EOL issues in ref parsing under Win32 Reference files can be loaded using Win32 line endings, too. Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 2f8a8ab2 2011-01-29T01:56:25 Refactor reference parsing code Several changes have been committed to allow the user to create in-memory references and write back to disk. Peeling of symbolic references has been made explicit. Added getter and setter methods for all attributes on a reference. Added corresponding documentation. Signed-off-by: Vicent Marti <tanoku@gmail.com>
nulltoken 9282e921 2010-12-27T20:34:19 Merge nulltoken's reference parsing code All the commits have been squashed into a single one before refactoring the final code, to keep everything tidy. Individual commit messages are as follows: Added repository reference looking up functionality placeholder. Added basic reference database definition and caching infrastructure. Removed useless constant. Added GIT_EINVALIDREFNAME error and description. Added missing description for GIT_EBAREINDEX. Added GIT_EREFCORRUPTED error and description. Added GIT_ETOONESTEDSYMREF error and description. Added resolving of direct and symbolic references. Prepared the packed-refs parsing. Added parsing of the packed-refs file content. When no loose reference has been found, the full content of the packed-refs file is parsed. All of the new (i.e. not previously parsed as a loose reference) references are eagerly stored in the cached references storage. The method packed_reference_file__parse() is in deer need of some refactoring. :-) Extracted to a method the parsing of the peeled target of a tag. Extracted to a method the parsing of a standard packed ref. Fixed leaky removal of the cached references. Ensured that a previously parsed packed reference isn't returned if a more up-to-date loose reference exists. Enhanced documentation of git_repository_reference_lookup(). Moved some refs related constants from repository.c to refs.h. Made parsing of a packed tag reference more robust. Updated git_repository_reference_lookup() documentation. Added some references to the test repository. Added some tests covering tag references looking up. Added some tests covering symbolic and head references looking up. Added some tests covering packed references looking up.
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