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fc658755
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2011-02-22T21:59:36
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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The old hash table with chained buckets has been replaced by a new one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>
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cb77ad0d
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2011-02-18T12:23:53
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Fix segfault when iterating a revlist backwards
The `prev` and `next` pointers were not being updated after popping one
of the list elements.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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c836c332
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2011-02-05T09:29:37
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Make more methods return error codes
git_revwalk_next now returns an error code when the iteration is over.
git_repository_index now returns an error code when the index file could
not be opened.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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b5ced41e
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2010-12-18T02:35:45
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Merge branch 'timezone'
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638c2ca4
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2010-12-18T02:10:25
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Rename 'git_person' to 'git_signature'
The new signature struct is public, and contains information about the
timezone offset. Must be free'd manually by the user.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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1f080e2d
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2010-12-13T03:43:56
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Fix initialization & freeing of inexistent repos
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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eec95235
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2010-12-02T04:58:22
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Commit parents now use the common 'vector' code
No more linked lists, no more O(n) access.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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1795f879
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2010-11-05T03:20:17
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Improve error handling
All initialization functions now return error codes instead of pointers.
Error codes are now properly propagated on most functions. Several new
and more specific error codes have been added in common.h
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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a13bc8e7
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2010-10-29T02:22:38
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Add getter methods for object owners
You can know access the owning repository of any existing object, or the
repository on which a revision walker is working on.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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0c3596f1
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2010-09-20T01:57:53
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Add setter methods & write support for git_commit
All the required git_commit_set_XXX methods have been implemented; all
the attributes of a commit object can now be modified in-memory.
The new method git_object_write() automatically writes back the
in-memory changes of any object to the repository. So far it only
supports git_commit objects.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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3315782c
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2010-08-08T14:12:17
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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>
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52f2390b
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2010-07-07T14:56:05
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Add external API to access detailed commit attributes
The following new external methods have been added:
GIT_EXTERN(const char *) git_commit_message_short(git_commit *commit);
GIT_EXTERN(const char *) git_commit_message(git_commit *commit);
GIT_EXTERN(time_t) git_commit_time(git_commit *commit);
GIT_EXTERN(const git_commit_person *) git_commit_committer(git_commit *commit);
GIT_EXTERN(const git_commit_person *) git_commit_author(git_commit *commit);
GIT_EXTERN(const git_tree *) git_commit_tree(git_commit *commit);
A new structure, git_commit_person has been added to represent a
commit's author or committer.
The parsing of a commit has been split in two phases.
When adding a commit to the revision pool:
- the commit's ODB object is opened
- its raw contents are parsed for commit TIME, PARENTS and TREE
(the minimal amount of data required to traverse the pool)
- the commit's ODB object is closed
When querying for extended information on a commit:
- the commit's ODB object is reopened
- its raw contents are parsed for the requested information
- the commit's ODB object remains open to handle additional queries
New unit tests have been added for the new functionality:
In t0401-parse: parse_person_test
In t0402-details: query_details_test
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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225fe215
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2010-06-18T13:06:34
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Add support for tree objects in revision pools
Commits now store pointers to their tree objects.
Tree objects now work as separate git_revpool_object
entities.
Tree objects can be loaded and parsed inedependently
from commits.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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40721f6b
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2010-07-10T11:50:16
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Changed revpool's object table to support arbitrary objects
git_revpool_object now has a type identifier for each object
type in a revpool (commits, trees, blobs, etc).
Trees can now be stored in the revision pool.
git_revpool_tableit now supports filtering objects by their
type when iterating through the object table.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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088a731f
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2010-06-09T14:54:22
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Fixed memory leaks in test suite
Created commit objects in t0401-parse weren't being freed properly.
Updated the API documentation to note that commit objects are owned
by the revision pool and should not be freed manually.
The parents list of each commit was being freed twice after each test.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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58b0cbea
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2010-07-10T12:14:30
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Actually free all commits when freeing a commit pool
Previously the objects table was being freed, but not
the actuall commits. All git_commit objects are freed
and hence invalidated when freeing the git_rp object
they belong to.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
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f2924934
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2010-06-01T19:41:55
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Style: Do not use (C99) // comments
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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de141d4b
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2010-05-28T02:02:02
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Improved error handling on auxilirary functions.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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6bb7aa13
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2010-05-28T01:48:59
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Added new error codes. Improved error handling.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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9b3577ed
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2010-05-28T00:23:43
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Fixed brace placement and converted spaces to tabs.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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69dca959
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2010-05-25T22:30:09
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Fixed parsing commit times (they weren't being stored at all!)
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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e5d1faef
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2010-05-25T19:48:13
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Add external API for revision sorting.
The GIT_RPSORT_XXX flags have been moved to the external API,
and a new method 'gitrp_sorting(...)' has been added to safely
change the sorting method of a revision pool.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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655d381a
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2010-05-23T16:51:31
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Add topological sorting and new insertion methods for commit lists.
'git_commit_list_toposort()' and 'git_commit_list_timesort()' now
sort a commit list by topological and time order respectively.
Both sorts are stable and in place.
'git_commit_list_append' has been replaced by 'git_commit_list_push_back'
and 'git_commit_list_push_front'.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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a7c182c5
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2010-05-23T04:41:31
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Add object cache to the revision pool.
Fixed issue when generating pending commits list during iteration.
The 'git_commit_lookup' function will now check the pool's cache
for commits which have been previously loaded/parsed; there can only
be a single 'git_commit' structure for each commit on the same pool.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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9bdb7594
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2010-05-23T17:12:28
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Properly reset all commit properties when doing a gitrp_reset().
Add git_revpool_table_free() method.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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5e15176d
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2010-05-23T02:39:57
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Add commit caching on the commit table.
Properly initialize the pending commits list.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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36b7cdb6
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2010-05-22T18:15:42
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Changed 'git_commit_list' from a linked list to a doubly-linked list.
Changed 'git_commit' to use bit fields instead of flags.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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1a895dd7
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2010-05-22T14:32:59
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Add arbritrary ordering revision walking.
The 'gitrp_next()' method now correctly does a revision walking
of all the pushed revisions in arbritary ordering.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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8add0153
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2010-05-21T02:35:40
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Split git_commit_lookup into separate functions.
git_commit_lookup() now creates commit references
without loading them from the ODB.
git_commit_parse() creates a commit reference, loads
it and parses it from the ODB.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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08d5d000
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2010-05-18T20:55:19
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Add commit parents to parsed commits and commit lists to the revpool.
Basic support for iterating the revpool.
The following functions of the revwalk API have been partially
implemented:
void gitrp_reset(git_revpool *pool);
void gitrp_push(git_revpool *pool, git_commit *commit);
void gitrp_prepare_walk(git_revpool *pool);
git_commit *gitrp_next(git_revpool *pool);
Parsed commits' parents are now also parsed and stored in a
"git_commit_list" structure (linked list).
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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c5696427
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2010-05-22T23:21:10
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Add 'git_revpool_object' and 'git_revpool_table' structures.
All the objects which will will be eventually transversable from
a revision pool (commits, trees, etc) now inherit from the
'git_revpool_object' structure which identifies them with their
own OID.
Furthermore, the 'git_revpool_table' and related functions have
been added, which allow for constant time lookup (hash table)
of the loaded revpool objects based on their OID.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
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64a47c01
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2008-12-30T23:21:36
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Wrap malloc and friends and report out of memory as GIT_ENOMEM
We now forbid direct use of malloc, strdup or calloc within the
library and instead use wrapper functions git__malloc, etc. to
invoke the underlying library malloc and set git_errno to a no
memory error code if the allocation fails.
In the future once we have pack objects in memory we are likely
to enhance these routines with garbage collection logic to purge
cached pack data when allocations fail. Because the size of the
function will grow somewhat large, we don't want to mark them for
inline as gcc tends to aggressively inline, creating larger than
expected executables.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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c215be41
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2008-11-22T14:57:40
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Rename git_revpool_* functions gitrp_*
Otherwise their prototypes don't match their declarations.
Detected by 'sparse', which is obviously good to run
before each commit.
Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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1b9e92c7
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2008-11-18T01:02:27
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s/git_revp/git_revpool/
git_revp is something I personally can't stop pronouncing
"rev pointer". I'm sure others would suffer the same
problem.
Also, rename the git_revp_ sub-api "gitrp_". This is the
first of many such renames, primarily done to prevent
extreme inflation in the "git_" namespace, which we'd like
to reserve for a higher-level API.
While we're at it, we remove the noise-char "c" from a lot
of functions. Since revision walking is all about commits,
the common case should be that we're dealing with commits.
Exceptions can get a more mnemonic description as needed.
Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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50298f44
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2008-11-01T15:55:01
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Switch the license from BSD to GPL+libgcc exception
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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d1ea30c3
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2008-11-01T15:42:23
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Move include files to include/git/, drop git_ prefix from file names
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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