mirror of
https://github.com/git/git.git
synced 2024-10-30 05:47:53 +01:00
1974632c66
This updates the type-enumeration constants introduced to reduce the memory footprint of "struct object" to match the type bits already used in the packfile format, by removing the former (i.e. TYPE_* constant macros) and using the latter (i.e. enum object_type) throughout the code for consistency. Eventually we can stop passing around the "type strings" entirely, and this will help - no confusion about two different integer enumeration. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
#ifndef OBJECT_H
|
|
#define OBJECT_H
|
|
|
|
struct object_list {
|
|
struct object *item;
|
|
struct object_list *next;
|
|
};
|
|
|
|
struct object_refs {
|
|
unsigned count;
|
|
struct object *base;
|
|
struct object *ref[FLEX_ARRAY]; /* more */
|
|
};
|
|
|
|
struct object_array {
|
|
unsigned int nr;
|
|
unsigned int alloc;
|
|
struct object_array_entry {
|
|
struct object *item;
|
|
const char *name;
|
|
} *objects;
|
|
};
|
|
|
|
#define TYPE_BITS 3
|
|
#define FLAG_BITS 27
|
|
|
|
/*
|
|
* The object type is stored in 3 bits.
|
|
*/
|
|
enum object_type {
|
|
OBJ_NONE = 0,
|
|
OBJ_COMMIT = 1,
|
|
OBJ_TREE = 2,
|
|
OBJ_BLOB = 3,
|
|
OBJ_TAG = 4,
|
|
/* 5/6 for future expansion */
|
|
OBJ_DELTA = 7,
|
|
OBJ_BAD,
|
|
};
|
|
|
|
struct object {
|
|
unsigned parsed : 1;
|
|
unsigned used : 1;
|
|
unsigned type : TYPE_BITS;
|
|
unsigned flags : FLAG_BITS;
|
|
unsigned char sha1[20];
|
|
};
|
|
|
|
extern int track_object_refs;
|
|
extern const char *type_names[9];
|
|
|
|
extern unsigned int get_max_object_index(void);
|
|
extern struct object *get_indexed_object(unsigned int);
|
|
|
|
static inline const char *typename(unsigned int type)
|
|
{
|
|
return type_names[type > OBJ_BAD ? OBJ_BAD : type];
|
|
}
|
|
|
|
extern struct object_refs *lookup_object_refs(struct object *);
|
|
|
|
/** Internal only **/
|
|
struct object *lookup_object(const unsigned char *sha1);
|
|
|
|
/** Returns the object, having looked it up as being the given type. **/
|
|
struct object *lookup_object_type(const unsigned char *sha1, const char *type);
|
|
|
|
void created_object(const unsigned char *sha1, struct object *obj);
|
|
|
|
/** Returns the object, having parsed it to find out what it is. **/
|
|
struct object *parse_object(const unsigned char *sha1);
|
|
|
|
/** Returns the object, with potentially excess memory allocated. **/
|
|
struct object *lookup_unknown_object(const unsigned char *sha1);
|
|
|
|
struct object_refs *alloc_object_refs(unsigned count);
|
|
void set_object_refs(struct object *obj, struct object_refs *refs);
|
|
|
|
void mark_reachable(struct object *obj, unsigned int mask);
|
|
|
|
struct object_list *object_list_insert(struct object *item,
|
|
struct object_list **list_p);
|
|
|
|
void object_list_append(struct object *item,
|
|
struct object_list **list_p);
|
|
|
|
unsigned object_list_length(struct object_list *list);
|
|
|
|
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);
|
|
|
|
#endif /* OBJECT_H */
|