#include "packfile.h"
#include "repository.h"
#include "object-store.h"
+#include "list-objects-filter-options.h"
/*
* An entry on the bitmap index, representing the bitmap for a given
}
static void show_extended_objects(struct bitmap_index *bitmap_git,
+ struct rev_info *revs,
show_reachable_fn show_reach)
{
struct bitmap *objects = bitmap_git->result;
continue;
obj = eindex->objects[i];
+ if ((obj->type == OBJ_BLOB && !revs->blob_objects) ||
+ (obj->type == OBJ_TREE && !revs->tree_objects) ||
+ (obj->type == OBJ_TAG && !revs->tag_objects))
+ continue;
+
show_reach(&obj->oid, obj->type, 0, eindex->hashes[i], NULL, 0);
}
}
+static void init_type_iterator(struct ewah_iterator *it,
+ struct bitmap_index *bitmap_git,
+ enum object_type type)
+{
+ switch (type) {
+ case OBJ_COMMIT:
+ ewah_iterator_init(it, bitmap_git->commits);
+ break;
+
+ case OBJ_TREE:
+ ewah_iterator_init(it, bitmap_git->trees);
+ break;
+
+ case OBJ_BLOB:
+ ewah_iterator_init(it, bitmap_git->blobs);
+ break;
+
+ case OBJ_TAG:
+ ewah_iterator_init(it, bitmap_git->tags);
+ break;
+
+ default:
+ BUG("object type %d not stored by bitmap type index", type);
+ break;
+ }
+}
+
static void show_objects_for_type(
struct bitmap_index *bitmap_git,
- struct ewah_bitmap *type_filter,
enum object_type object_type,
show_reachable_fn show_reach)
{
struct bitmap *objects = bitmap_git->result;
- ewah_iterator_init(&it, type_filter);
+ init_type_iterator(&it, bitmap_git, object_type);
for (i = 0; i < objects->word_alloc &&
ewah_iterator_next(&filter, &it); i++) {
return 0;
}
-struct bitmap_index *prepare_bitmap_walk(struct rev_info *revs)
+static struct bitmap *find_tip_blobs(struct bitmap_index *bitmap_git,
+ struct object_list *tip_objects)
+{
+ struct bitmap *result = bitmap_new();
+ struct object_list *p;
+
+ for (p = tip_objects; p; p = p->next) {
+ int pos;
+
+ if (p->item->type != OBJ_BLOB)
+ continue;
+
+ pos = bitmap_position(bitmap_git, &p->item->oid);
+ if (pos < 0)
+ continue;
+
+ bitmap_set(result, pos);
+ }
+
+ return result;
+}
+
+static void filter_bitmap_blob_none(struct bitmap_index *bitmap_git,
+ struct object_list *tip_objects,
+ struct bitmap *to_filter)
+{
+ struct eindex *eindex = &bitmap_git->ext_index;
+ struct bitmap *tips;
+ struct ewah_iterator it;
+ eword_t mask;
+ uint32_t i;
+
+ /*
+ * The non-bitmap version of this filter never removes
+ * blobs which the other side specifically asked for,
+ * so we must match that behavior.
+ */
+ tips = find_tip_blobs(bitmap_git, tip_objects);
+
+ /*
+ * We can use the blob type-bitmap to work in whole words
+ * for the objects that are actually in the bitmapped packfile.
+ */
+ for (i = 0, init_type_iterator(&it, bitmap_git, OBJ_BLOB);
+ i < to_filter->word_alloc && ewah_iterator_next(&mask, &it);
+ i++) {
+ if (i < tips->word_alloc)
+ mask &= ~tips->words[i];
+ to_filter->words[i] &= ~mask;
+ }
+
+ /*
+ * Clear any blobs that weren't in the packfile (and so would not have
+ * been caught by the loop above. We'll have to check them
+ * individually.
+ */
+ for (i = 0; i < eindex->count; i++) {
+ uint32_t pos = i + bitmap_git->pack->num_objects;
+ if (eindex->objects[i]->type == OBJ_BLOB &&
+ bitmap_get(to_filter, pos) &&
+ !bitmap_get(tips, pos))
+ bitmap_unset(to_filter, pos);
+ }
+
+ bitmap_free(tips);
+}
+
+static unsigned long get_size_by_pos(struct bitmap_index *bitmap_git,
+ uint32_t pos)
+{
+ struct packed_git *pack = bitmap_git->pack;
+ unsigned long size;
+ struct object_info oi = OBJECT_INFO_INIT;
+
+ oi.sizep = &size;
+
+ if (pos < pack->num_objects) {
+ struct revindex_entry *entry = &pack->revindex[pos];
+ if (packed_object_info(the_repository, pack,
+ entry->offset, &oi) < 0) {
+ struct object_id oid;
+ nth_packed_object_id(&oid, pack, entry->nr);
+ die(_("unable to get size of %s"), oid_to_hex(&oid));
+ }
+ } else {
+ struct eindex *eindex = &bitmap_git->ext_index;
+ struct object *obj = eindex->objects[pos - pack->num_objects];
+ if (oid_object_info_extended(the_repository, &obj->oid, &oi, 0) < 0)
+ die(_("unable to get size of %s"), oid_to_hex(&obj->oid));
+ }
+
+ return size;
+}
+
+static void filter_bitmap_blob_limit(struct bitmap_index *bitmap_git,
+ struct object_list *tip_objects,
+ struct bitmap *to_filter,
+ unsigned long limit)
+{
+ struct eindex *eindex = &bitmap_git->ext_index;
+ struct bitmap *tips;
+ struct ewah_iterator it;
+ eword_t mask;
+ uint32_t i;
+
+ tips = find_tip_blobs(bitmap_git, tip_objects);
+
+ for (i = 0, init_type_iterator(&it, bitmap_git, OBJ_BLOB);
+ i < to_filter->word_alloc && ewah_iterator_next(&mask, &it);
+ i++) {
+ eword_t word = to_filter->words[i] & mask;
+ unsigned offset;
+
+ for (offset = 0; offset < BITS_IN_EWORD; offset++) {
+ uint32_t pos;
+
+ if ((word >> offset) == 0)
+ break;
+ offset += ewah_bit_ctz64(word >> offset);
+ pos = i * BITS_IN_EWORD + offset;
+
+ if (!bitmap_get(tips, pos) &&
+ get_size_by_pos(bitmap_git, pos) >= limit)
+ bitmap_unset(to_filter, pos);
+ }
+ }
+
+ for (i = 0; i < eindex->count; i++) {
+ uint32_t pos = i + bitmap_git->pack->num_objects;
+ if (eindex->objects[i]->type == OBJ_BLOB &&
+ bitmap_get(to_filter, pos) &&
+ !bitmap_get(tips, pos) &&
+ get_size_by_pos(bitmap_git, pos) >= limit)
+ bitmap_unset(to_filter, pos);
+ }
+
+ bitmap_free(tips);
+}
+
+static int filter_bitmap(struct bitmap_index *bitmap_git,
+ struct object_list *tip_objects,
+ struct bitmap *to_filter,
+ struct list_objects_filter_options *filter)
+{
+ if (!filter || filter->choice == LOFC_DISABLED)
+ return 0;
+
+ if (filter->choice == LOFC_BLOB_NONE) {
+ if (bitmap_git)
+ filter_bitmap_blob_none(bitmap_git, tip_objects,
+ to_filter);
+ return 0;
+ }
+
+ if (filter->choice == LOFC_BLOB_LIMIT) {
+ if (bitmap_git)
+ filter_bitmap_blob_limit(bitmap_git, tip_objects,
+ to_filter,
+ filter->blob_limit_value);
+ return 0;
+ }
+
+ /* filter choice not handled */
+ return -1;
+}
+
+static int can_filter_bitmap(struct list_objects_filter_options *filter)
+{
+ return !filter_bitmap(NULL, NULL, NULL, filter);
+}
+
+struct bitmap_index *prepare_bitmap_walk(struct rev_info *revs,
+ struct list_objects_filter_options *filter)
{
unsigned int i;
struct bitmap *wants_bitmap = NULL;
struct bitmap *haves_bitmap = NULL;
- struct bitmap_index *bitmap_git = xcalloc(1, sizeof(*bitmap_git));
+ struct bitmap_index *bitmap_git;
+
+ /*
+ * We can't do pathspec limiting with bitmaps, because we don't know
+ * which commits are associated with which object changes (let alone
+ * even which objects are associated with which paths).
+ */
+ if (revs->prune)
+ return NULL;
+
+ if (!can_filter_bitmap(filter))
+ return NULL;
+
/* try to open a bitmapped pack, but don't parse it yet
* because we may not need to use it */
+ bitmap_git = xcalloc(1, sizeof(*bitmap_git));
if (open_pack_bitmap(revs->repo, bitmap_git) < 0)
goto cleanup;
if (haves_bitmap)
bitmap_and_not(wants_bitmap, haves_bitmap);
+ filter_bitmap(bitmap_git, wants, wants_bitmap, filter);
+
bitmap_git->result = wants_bitmap;
bitmap_git->haves = haves_bitmap;
+ object_list_free(&wants);
+ object_list_free(&haves);
+
return bitmap_git;
cleanup:
free_bitmap_index(bitmap_git);
+ object_list_free(&wants);
+ object_list_free(&haves);
return NULL;
}
}
void traverse_bitmap_commit_list(struct bitmap_index *bitmap_git,
+ struct rev_info *revs,
show_reachable_fn show_reachable)
{
assert(bitmap_git->result);
- show_objects_for_type(bitmap_git, bitmap_git->commits,
- OBJ_COMMIT, show_reachable);
- show_objects_for_type(bitmap_git, bitmap_git->trees,
- OBJ_TREE, show_reachable);
- show_objects_for_type(bitmap_git, bitmap_git->blobs,
- OBJ_BLOB, show_reachable);
- show_objects_for_type(bitmap_git, bitmap_git->tags,
- OBJ_TAG, show_reachable);
+ show_objects_for_type(bitmap_git, OBJ_COMMIT, show_reachable);
+ if (revs->tree_objects)
+ show_objects_for_type(bitmap_git, OBJ_TREE, show_reachable);
+ if (revs->blob_objects)
+ show_objects_for_type(bitmap_git, OBJ_BLOB, show_reachable);
+ if (revs->tag_objects)
+ show_objects_for_type(bitmap_git, OBJ_TAG, show_reachable);
- show_extended_objects(bitmap_git, show_reachable);
+ show_extended_objects(bitmap_git, revs, show_reachable);
}
static uint32_t count_object_type(struct bitmap_index *bitmap_git,
struct ewah_iterator it;
eword_t filter;
- switch (type) {
- case OBJ_COMMIT:
- ewah_iterator_init(&it, bitmap_git->commits);
- break;
-
- case OBJ_TREE:
- ewah_iterator_init(&it, bitmap_git->trees);
- break;
-
- case OBJ_BLOB:
- ewah_iterator_init(&it, bitmap_git->blobs);
- break;
-
- case OBJ_TAG:
- ewah_iterator_init(&it, bitmap_git->tags);
- break;
-
- default:
- return 0;
- }
+ init_type_iterator(&it, bitmap_git, type);
while (i < objects->word_alloc && ewah_iterator_next(&filter, &it)) {
eword_t word = objects->words[i++] & filter;
projects / thirdparty / git.git / blobdiff