diff options
Diffstat (limited to 'object.c')
| -rw-r--r-- | object.c | 51 |
1 files changed, 33 insertions, 18 deletions
@@ -43,16 +43,17 @@ int type_from_string(const char *str) die("invalid object type \"%s\"", str); } -static unsigned int hash_obj(struct object *obj, unsigned int n) +static unsigned int hash_obj(const unsigned char *sha1, unsigned int n) { unsigned int hash; - memcpy(&hash, obj->sha1, sizeof(unsigned int)); - return hash % n; + memcpy(&hash, sha1, sizeof(unsigned int)); + /* Assumes power-of-2 hash sizes in grow_object_hash */ + return hash & (n - 1); } static void insert_obj_hash(struct object *obj, struct object **hash, unsigned int size) { - unsigned int j = hash_obj(obj, size); + unsigned int j = hash_obj(obj->sha1, size); while (hash[j]) { j++; @@ -62,13 +63,6 @@ static void insert_obj_hash(struct object *obj, struct object **hash, unsigned i hash[j] = obj; } -static unsigned int hashtable_index(const unsigned char *sha1) -{ - unsigned int i; - memcpy(&i, sha1, sizeof(unsigned int)); - return i % obj_hash_size; -} - struct object *lookup_object(const unsigned char *sha1) { unsigned int i, first; @@ -77,7 +71,7 @@ struct object *lookup_object(const unsigned char *sha1) if (!obj_hash) return NULL; - first = i = hashtable_index(sha1); + first = i = hash_obj(sha1, obj_hash_size); while ((obj = obj_hash[i]) != NULL) { if (!hashcmp(sha1, obj->sha1)) break; @@ -101,6 +95,10 @@ struct object *lookup_object(const unsigned char *sha1) static void grow_object_hash(void) { int i; + /* + * Note that this size must always be power-of-2 to match hash_obj + * above. + */ int new_hash_size = obj_hash_size < 32 ? 32 : 2 * obj_hash_size; struct object **new_hash; @@ -264,18 +262,16 @@ int object_list_contains(struct object_list *list, struct object *obj) return 0; } -void add_object_array(struct object *obj, const char *name, struct object_array *array) -{ - add_object_array_with_mode(obj, name, array, S_IFINVALID); -} - /* * A zero-length string to which object_array_entry::name can be * initialized without requiring a malloc/free. */ static char object_array_slopbuf[1]; -void add_object_array_with_mode(struct object *obj, const char *name, struct object_array *array, unsigned mode) +static void add_object_array_with_mode_context(struct object *obj, const char *name, + struct object_array *array, + unsigned mode, + struct object_context *context) { unsigned nr = array->nr; unsigned alloc = array->alloc; @@ -298,9 +294,28 @@ void add_object_array_with_mode(struct object *obj, const char *name, struct obj else entry->name = xstrdup(name); entry->mode = mode; + entry->context = context; array->nr = ++nr; } +void add_object_array(struct object *obj, const char *name, struct object_array *array) +{ + add_object_array_with_mode(obj, name, array, S_IFINVALID); +} + +void add_object_array_with_mode(struct object *obj, const char *name, struct object_array *array, unsigned mode) +{ + add_object_array_with_mode_context(obj, name, array, mode, NULL); +} + +void add_object_array_with_context(struct object *obj, const char *name, struct object_array *array, struct object_context *context) +{ + if (context) + add_object_array_with_mode_context(obj, name, array, context->mode, context); + else + add_object_array_with_mode_context(obj, name, array, S_IFINVALID, context); +} + void object_array_filter(struct object_array *array, object_array_each_func_t want, void *cb_data) { |