#ifndef OBJECT_H #define OBJECT_H #include "cache.h" struct buffer_slab; struct parsed_object_pool { struct object **obj_hash; int nr_objs, obj_hash_size; /* TODO: migrate alloc_states to mem-pool? */ struct alloc_state *blob_state; struct alloc_state *tree_state; struct alloc_state *commit_state; struct alloc_state *tag_state; struct alloc_state *object_state; unsigned commit_count; /* parent substitutions from .git/info/grafts and .git/shallow */ struct commit_graft **grafts; int grafts_alloc, grafts_nr; int is_shallow; struct stat_validity *shallow_stat; char *alternate_shallow_file; int commit_graft_prepared; struct buffer_slab *buffer_slab; }; struct parsed_object_pool *parsed_object_pool_new(void); void parsed_object_pool_clear(struct parsed_object_pool *o); struct object_list { struct object *item; struct object_list *next; }; struct object_array { unsigned int nr; unsigned int alloc; struct object_array_entry { struct object *item; /* * name or NULL. If non-NULL, the memory pointed to * is owned by this object *except* if it points at * object_array_slopbuf, which is a static copy of the * empty string. */ char *name; char *path; unsigned mode; } *objects; }; #define OBJECT_ARRAY_INIT { 0, 0, NULL } /* * object flag allocation: * revision.h: 0---------10 25----28 * fetch-pack.c: 01 * negotiator/default.c: 2--5 * walker.c: 0-2 * upload-pack.c: 4 11-----14 16-----19 * builtin/blame.c: 12-13 * bisect.c: 16 * bundle.c: 16 * http-push.c: 16-----19 * commit-reach.c: 15-------19 * sha1-name.c: 20 * list-objects-filter.c: 21 * builtin/fsck.c: 0--3 * builtin/index-pack.c: 2021 * builtin/pack-objects.c: 20 * builtin/reflog.c: 10--12 * builtin/show-branch.c: 0-------------------------------------------26 * builtin/unpack-objects.c: 2021 */ #define FLAG_BITS 29 /* * The object type is stored in 3 bits. */ struct object { unsigned parsed : 1; unsigned type : TYPE_BITS; unsigned flags : FLAG_BITS; struct object_id oid; }; extern const char *type_name(unsigned int type); extern int type_from_string_gently(const char *str, ssize_t, int gentle); #define type_from_string(str) type_from_string_gently(str, -1, 0) /* * Return the current number of buckets in the object hashmap. */ extern unsigned int get_max_object_index(void); /* * Return the object from the specified bucket in the object hashmap. */ extern struct object *get_indexed_object(unsigned int); /* * This can be used to see if we have heard of the object before, but * it can return "yes we have, and here is a half-initialised object" * for an object that we haven't loaded/parsed yet. * * When parsing a commit to create an in-core commit object, its * parents list holds commit objects that represent its parents, but * they are expected to be lazily initialized and do not know what * their trees or parents are yet. When this function returns such a * half-initialised objects, the caller is expected to initialize them * by calling parse_object() on them. */ struct object *lookup_object(struct repository *r, const unsigned char *sha1); extern void *create_object(struct repository *r, const unsigned char *sha1, void *obj); void *object_as_type(struct repository *r, struct object *obj, enum object_type type, int quiet); /* * Returns the object, having parsed it to find out what it is. * * Returns NULL if the object is missing or corrupt. */ struct object *parse_object(struct repository *r, const struct object_id *oid); /* * Like parse_object, but will die() instead of returning NULL. If the * "name" parameter is not NULL, it is included in the error message * (otherwise, the hex object ID is given). */ struct object *parse_object_or_die(const struct object_id *oid, const char *name); /* Given the result of read_sha1_file(), returns the object after * parsing it. eaten_p indicates if the object has a borrowed copy * of buffer and the caller should not free() it. */ struct object *parse_object_buffer(struct repository *r, const struct object_id *oid, enum object_type type, unsigned long size, void *buffer, int *eaten_p); /** Returns the object, with potentially excess memory allocated. **/ struct object *lookup_unknown_object(const unsigned char *sha1); struct object_list *object_list_insert(struct object *item, struct object_list **list_p); int object_list_contains(struct object_list *list, struct object *obj); /* Object array handling .. */ void add_object_array(struct object *obj, const char *name, struct object_array *array); void add_object_array_with_path(struct object *obj, const char *name, struct object_array *array, unsigned mode, const char *path); /* * Returns NULL if the array is empty. Otherwise, returns the last object * after removing its entry from the array. Other resources associated * with that object are left in an unspecified state and should not be * examined. */ struct object *object_array_pop(struct object_array *array); typedef int (*object_array_each_func_t)(struct object_array_entry *, void *); /* * Apply want to each entry in array, retaining only the entries for * which the function returns true. Preserve the order of the entries * that are retained. */ void object_array_filter(struct object_array *array, object_array_each_func_t want, void *cb_data); /* * Remove from array all but the first entry with a given name. * Warning: this function uses an O(N^2) algorithm. */ void object_array_remove_duplicates(struct object_array *array); /* * Remove any objects from the array, freeing all used memory; afterwards * the array is ready to store more objects with add_object_array(). */ void object_array_clear(struct object_array *array); void clear_object_flags(unsigned flags); /* * Clear the specified object flags from all in-core commit objects. */ extern void clear_commit_marks_all(unsigned int flags); #endif /* OBJECT_H */