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99bf115c87
Convert the existing global cache for parsed objects (obj_hash) into repository-specific parsed object caches. Existing code that uses obj_hash are modified to use the parsed object cache of the_repository; future patches will use the parsed object caches of other repositories. Another future use case for a pool of objects is ease of memory management in revision walking: If we can free the rev-list related memory early in pack-objects (e.g. part of repack operation) then it could lower memory pressure significantly when running on large repos. While this has been discussed on the mailing list lately, this series doesn't implement this. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
#ifndef REPOSITORY_H
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#define REPOSITORY_H
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struct config_set;
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struct git_hash_algo;
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struct index_state;
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struct raw_object_store;
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struct submodule_cache;
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struct repository {
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/* Environment */
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/*
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* Path to the git directory.
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* Cannot be NULL after initialization.
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*/
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char *gitdir;
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/*
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* Path to the common git directory.
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* Cannot be NULL after initialization.
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*/
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char *commondir;
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/*
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* Holds any information related to accessing the raw object content.
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*/
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struct raw_object_store *objects;
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/*
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* All objects in this repository that have been parsed. This structure
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* owns all objects it references, so users of "struct object *"
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* generally do not need to free them; instead, when a repository is no
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* longer used, call parsed_object_pool_clear() on this structure, which
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* is called by the repositories repo_clear on its desconstruction.
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*/
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struct parsed_object_pool *parsed_objects;
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/* The store in which the refs are held. */
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struct ref_store *refs;
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/*
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* Path to the repository's graft file.
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* Cannot be NULL after initialization.
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*/
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char *graft_file;
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/*
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* Path to the current worktree's index file.
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* Cannot be NULL after initialization.
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*/
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char *index_file;
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/*
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* Path to the working directory.
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* A NULL value indicates that there is no working directory.
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*/
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char *worktree;
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/*
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* Path from the root of the top-level superproject down to this
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* repository. This is only non-NULL if the repository is initialized
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* as a submodule of another repository.
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*/
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char *submodule_prefix;
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/* Subsystems */
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/*
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* Repository's config which contains key-value pairs from the usual
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* set of config files (i.e. repo specific .git/config, user wide
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* ~/.gitconfig, XDG config file and the global /etc/gitconfig)
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*/
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struct config_set *config;
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/* Repository's submodule config as defined by '.gitmodules' */
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struct submodule_cache *submodule_cache;
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/*
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* Repository's in-memory index.
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* 'repo_read_index()' can be used to populate 'index'.
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*/
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struct index_state *index;
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/* Repository's current hash algorithm, as serialized on disk. */
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const struct git_hash_algo *hash_algo;
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/* Configurations */
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/* Indicate if a repository has a different 'commondir' from 'gitdir' */
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unsigned different_commondir:1;
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};
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extern struct repository *the_repository;
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/*
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* Define a custom repository layout. Any field can be NULL, which
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* will default back to the path according to the default layout.
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*/
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struct set_gitdir_args {
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const char *commondir;
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const char *object_dir;
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const char *graft_file;
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const char *index_file;
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const char *alternate_db;
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};
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extern void repo_set_gitdir(struct repository *repo,
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const char *root,
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const struct set_gitdir_args *extra_args);
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extern void repo_set_worktree(struct repository *repo, const char *path);
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extern void repo_set_hash_algo(struct repository *repo, int algo);
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extern void initialize_the_repository(void);
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extern int repo_submodule_init(struct repository *submodule,
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struct repository *superproject,
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const char *path);
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extern void repo_clear(struct repository *repo);
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/*
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* Populates the repository's index from its index_file, an index struct will
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* be allocated if needed.
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*
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* Return the number of index entries in the populated index or a value less
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* than zero if an error occured. If the repository's index has already been
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* populated then the number of entries will simply be returned.
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*/
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extern int repo_read_index(struct repository *repo);
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#endif /* REPOSITORY_H */
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