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* Redesigned the walking/object lookup interfaceVicent Marti2010-08-121-210/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Changed revpool's object table to support arbitrary objectsVicent Marti2010-07-151-0/+11
| | | | | | | | | | | | 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>
* Style: Do not use (C99) // commentsRamsay Jones2010-06-021-1/+1
| | | | | Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
* Fix a memory leak shown by valgrindRamsay Jones2010-06-021-0/+1
| | | | | Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
* Fix a "dereference of type-punned pointer" compiler warningRamsay Jones2010-06-021-1/+3
| | | | | | | | | | | | | | gcc (4.4.0) issues the following warning: src/revobject.c:33: warning: dereferencing type-punned pointer \ will break strict-aliasing rules We suppress the warning by copying the first 4 bytes from the oid structure into an 'unsigned int' using memcpy(). This will also fix any potential alignment issues on certain platforms. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
* Fix sparse warnings: "symbol not declared. Should it be static?"Ramsay Jones2010-06-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | In particular, sparse issues the following warnings: src/revobject.c:29:14: warning: symbol 'max_load_factor' was \ not declared. Should it be static? src/revobject.c:31:14: warning: symbol 'git_revpool_table__hash' was \ not declared. Should it be static? In order to suppress these warnings, we simply declare them as static, since they are not (currently) referenced outside of this file. In the case of max_load_factor, this is probably correct. However, this may not be appropriate for git_revpool_table__hash(), given how it is named. So, this should either be re-named to reflect it's non-external status, or a declaration needs to be added to the revobject.h header file. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
* msvc: Fix some compiler warningsRamsay Jones2010-06-021-3/+3
| | | | | | | | | | | | | | | | | | | | In particular, the compiler issues the following warnings: src/revobject.c(29) : warning C4305: 'initializing' : truncation \ from 'double' to 'const float' src/revobject.c(56) : warning C4244: '=' : conversion from \ 'const float' to 'unsigned int', possible loss of data src/revobject.c(149) : warning C4244: '=' : conversion from \ 'const float' to 'unsigned int', possible loss of data In order to suppress the warnings we change the type of max_load_factor to double, rather than change the initialiser to 0.65f, and cast the result type of the expressions to 'unsigned int' as expected by the assignment operators. Note that double should be able to represent all unsigned int values without loss. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
* Fix some "signed/unsigned comparison" compilation warningsRamsay Jones2010-06-021-2/+2
| | | | | | | These warnings are issued by both gcc (-Wextra) and msvc (-W3). Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
* Fix a memory corruption runtime errorRamsay Jones2010-06-021-1/+1
| | | | | | | | | | On the msvc build, the tests t0401-parse and t0501-walk both crash with a runtime error (ACCESS_VIOLATION). This is caused by writing to un-allocated memory due to an under-allocation of a git_revpool_table data structure. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
* Improved error handling on auxilirary functions.Vicent Marti2010-06-021-2/+2
| | | | | Signed-off-by: Vicent Marti <tanoku@gmail.com> Signed-off-by: Andreas Ericsson <ae@op5.se>
* Use the first 4 bytes of an OID as hash, instead of full hashing.Vicent Marti2010-06-021-21/+1
| | | | | Signed-off-by: Vicent Marti <tanoku@gmail.com> Signed-off-by: Andreas Ericsson <ae@op5.se>
* Fixed brace placement and converted spaces to tabs.Vicent Marti2010-06-021-119/+111
| | | | | Signed-off-by: Vicent Marti <tanoku@gmail.com> Signed-off-by: Andreas Ericsson <ae@op5.se>
* Properly reset all commit properties when doing a gitrp_reset().Vicent Marti2010-06-021-0/+43
| | | | | | | Add git_revpool_table_free() method. Signed-off-by: Vicent Marti <tanoku@gmail.com> Signed-off-by: Andreas Ericsson <ae@op5.se>
* Add object cache to the revision pool.Vicent Marti2010-06-021-1/+9
| | | | | | | | | | | 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>
* Add commit caching on the commit table.Vicent Marti2010-06-021-1/+7
| | | | | | | Properly initialize the pending commits list. Signed-off-by: Vicent Marti <tanoku@gmail.com> Signed-off-by: Andreas Ericsson <ae@op5.se>
* Add 'git_revpool_object' and 'git_revpool_table' structures.Vicent Marti2010-06-021-0/+167
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>