mirror of
https://github.com/git/git.git
synced 2024-11-24 18:33:43 +08:00
1b7a91da71
The code for computing history reachability has been shuffled, obtained a bunch of new tests to cover them, and then being improved. * ds/reachable: commit-reach: correct accidental #include of C file commit-reach: use can_all_from_reach commit-reach: make can_all_from_reach... linear commit-reach: replace ref_newer logic test-reach: test commit_contains test-reach: test can_all_from_reach_with_flags test-reach: test reduce_heads test-reach: test get_merge_bases_many test-reach: test is_descendant_of test-reach: test in_merge_bases test-reach: create new test tool for ref_newer commit-reach: move can_all_from_reach_with_flags upload-pack: generalize commit date cutoff upload-pack: refactor ok_to_give_up() upload-pack: make reachable() more generic commit-reach: move commit_contains from ref-filter commit-reach: move ref_newer from remote.c commit.h: remove method declarations commit-reach: move walk methods from commit.c
195 lines
6.3 KiB
C
195 lines
6.3 KiB
C
#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 2526
|
|
* 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 27
|
|
|
|
/*
|
|
* 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 */
|