Use memmove instead of memcpy for overlapping areas

[git.git] / object.h

diff --git a/object.h b/object.h
index 9ad4ae83e12ab84c94eacfa3a8db1bd01e987c2a..3d4ff4611f55d766cf2f82baa9771a80b50c85f9 100644 (file)
--- a/object.h
+++ b/object.h
@@ -4,23 +4,49 @@
 struct object_list {
        struct object *item;
        struct object_list *next;
-       const char *name;
 };
 
+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.
+ */
 struct object {
        unsigned parsed : 1;
        unsigned used : 1;
-       unsigned delta : 1;
-       unsigned int flags;
+       unsigned type : TYPE_BITS;
+       unsigned flags : FLAG_BITS;
        unsigned char sha1[20];
-       const char *type;
-       struct object_list *refs;
-       struct object_list *attached_deltas;
-       void *util;
 };
 
-extern int nr_objs;
-extern struct object **objs;
+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);
@@ -33,8 +59,25 @@ 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);
 
-void add_ref(struct object *refer, struct object *target);
+/** 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 */