src/hashtable.c


Log

Author Commit Date CI Message
Vicent Marti 0be7f000 2011-05-23T21:04:09 hashtable: Reword errors
Jakob Pfender da533495 2011-05-18T12:12:16 hashtable.c: Move to new error handling mechanism
Vicent Marti d40d30cb 2011-03-15T19:54:45 Debug assertion when using an initialized hashtable
Vicent Marti 2e60b652 2011-02-27T22:30:28 Add extra methods to the new Hashtable implementation Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti fc658755 2011-02-22T21:59:36 Rewrite git_hashtable internals The old hash table with chained buckets has been replaced by a new one using Cuckoo hashing, which offers guaranteed constant lookup times.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 e52ed7a5 2011-01-03T22:34:27 Split object methods from repository.c All the relevant git_object methods have been moved to object.c Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 9c9f4fc1 2010-08-12T23:40:54 Add support for manually freeing repo objects A new method 'git_repository_object_free' allows to manually force the freeing of a repository object, even though they are still automatically managed by the repository and don't need to be freed by the user. Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 3315782c 2010-08-08T14:12:17 Redesigned the walking/object lookup interface The old 'git_revpool' object has been removed and split into two distinct objects with separate functionality, in order to have separate methods for object management and object walking. * A new object 'git_repository' does the high-level management of a repository's objects (commits, trees, tags, etc) on top of a 'git_odb'. Eventually, it will also manage other repository attributes (e.g. tag resolution, references, etc). See: src/git/repository.h * A new external method 'git_repository_lookup(repo, oid, type)' has been added to the 'git_repository' API. All object lookups (git_XXX_lookup()) are now wrappers to this method, and duplicated code has been removed. The method does automatic type checking and returns a generic 'git_revpool_object' that can be cast to any specific object. See: src/git/repository.h * The external methods for object parsing of repository objects (git_XXX_parse()) have been removed. Loading objects from the repository is now managed through the 'lookup' functions. These objects are loaded with minimal information, and the relevant parsing is done automatically when the user requests any of the parsed attributes through accessor methods. An attribute has been added to 'git_repository' in order to force the parsing of all the repository objects immediately after lookup. See: src/git/commit.h See: src/git/tag.h See: src/git/tree.h * The previous walking functionality of the revpool is now found in 'git_revwalk', which does the actual revision walking on a repository; the attributes when walking through commits in a database have been decoupled from the actual commit objects. This increases performance when accessing commits during the walk and allows to have several 'git_revwalk' instances working at the same time on top of the same repository, without having to load commits in memory several times. See: src/git/revwalk.h * The old 'git_revpool_table' has been renamed to 'git_hashtable' and now works as a generic hashtable with support for any kind of object and custom hash functions. See: src/hashtable.h * All the relevant unit tests have been updated, renamed and grouped accordingly. Signed-off-by: Vicent Marti <tanoku@gmail.com>