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-rw-r--r--pack-bitmap.c107
1 files changed, 54 insertions, 53 deletions
diff --git a/pack-bitmap.c b/pack-bitmap.c
index 91e4101531..cb9c622803 100644
--- a/pack-bitmap.c
+++ b/pack-bitmap.c
@@ -60,7 +60,7 @@ static struct bitmap_index {
struct ewah_bitmap *blobs;
struct ewah_bitmap *tags;
- /* Map from SHA1 -> `stored_bitmap` for all the bitmapped comits */
+ /* Map from SHA1 -> `stored_bitmap` for all the bitmapped commits */
khash_sha1 *bitmaps;
/* Number of bitmapped commits */
@@ -197,15 +197,24 @@ static struct stored_bitmap *store_bitmap(struct bitmap_index *index,
return stored;
}
-static int load_bitmap_entries_v1(struct bitmap_index *index)
+static inline uint32_t read_be32(const unsigned char *buffer, size_t *pos)
{
- static const size_t MAX_XOR_OFFSET = 160;
+ uint32_t result = get_be32(buffer + *pos);
+ (*pos) += sizeof(result);
+ return result;
+}
- uint32_t i;
- struct stored_bitmap **recent_bitmaps;
- struct bitmap_disk_entry *entry;
+static inline uint8_t read_u8(const unsigned char *buffer, size_t *pos)
+{
+ return buffer[(*pos)++];
+}
- recent_bitmaps = xcalloc(MAX_XOR_OFFSET, sizeof(struct stored_bitmap));
+#define MAX_XOR_OFFSET 160
+
+static int load_bitmap_entries_v1(struct bitmap_index *index)
+{
+ uint32_t i;
+ struct stored_bitmap *recent_bitmaps[MAX_XOR_OFFSET] = { NULL };
for (i = 0; i < index->entry_count; ++i) {
int xor_offset, flags;
@@ -214,15 +223,12 @@ static int load_bitmap_entries_v1(struct bitmap_index *index)
uint32_t commit_idx_pos;
const unsigned char *sha1;
- entry = (struct bitmap_disk_entry *)(index->map + index->map_pos);
- index->map_pos += sizeof(struct bitmap_disk_entry);
+ commit_idx_pos = read_be32(index->map, &index->map_pos);
+ xor_offset = read_u8(index->map, &index->map_pos);
+ flags = read_u8(index->map, &index->map_pos);
- commit_idx_pos = ntohl(entry->object_pos);
sha1 = nth_packed_object_sha1(index->pack, commit_idx_pos);
- xor_offset = (int)entry->xor_offset;
- flags = (int)entry->flags;
-
bitmap = read_bitmap_1(index);
if (!bitmap)
return -1;
@@ -244,6 +250,15 @@ static int load_bitmap_entries_v1(struct bitmap_index *index)
return 0;
}
+static char *pack_bitmap_filename(struct packed_git *p)
+{
+ size_t len;
+
+ if (!strip_suffix(p->pack_name, ".pack", &len))
+ die("BUG: pack_name does not end in .pack");
+ return xstrfmt("%.*s.bitmap", (int)len, p->pack_name);
+}
+
static int open_pack_bitmap_1(struct packed_git *packfile)
{
int fd;
@@ -314,20 +329,6 @@ failed:
return -1;
}
-char *pack_bitmap_filename(struct packed_git *p)
-{
- char *idx_name;
- int len;
-
- len = strlen(p->pack_name) - strlen(".pack");
- idx_name = xmalloc(len + strlen(".bitmap") + 1);
-
- memcpy(idx_name, p->pack_name, len);
- memcpy(idx_name + len, ".bitmap", strlen(".bitmap") + 1);
-
- return idx_name;
-}
-
static int open_pack_bitmap(void)
{
struct packed_git *p;
@@ -396,14 +397,12 @@ static int ext_index_add_object(struct object *object, const char *name)
int hash_ret;
int bitmap_pos;
- hash_pos = kh_put_sha1_pos(eindex->positions, object->sha1, &hash_ret);
+ hash_pos = kh_put_sha1_pos(eindex->positions, object->oid.hash, &hash_ret);
if (hash_ret > 0) {
if (eindex->count >= eindex->alloc) {
eindex->alloc = (eindex->alloc + 16) * 3 / 2;
- eindex->objects = xrealloc(eindex->objects,
- eindex->alloc * sizeof(struct object *));
- eindex->hashes = xrealloc(eindex->hashes,
- eindex->alloc * sizeof(uint32_t));
+ REALLOC_ARRAY(eindex->objects, eindex->alloc);
+ REALLOC_ARRAY(eindex->hashes, eindex->alloc);
}
bitmap_pos = eindex->count;
@@ -424,7 +423,7 @@ static void show_object(struct object *object, const struct name_path *path,
struct bitmap *base = data;
int bitmap_pos;
- bitmap_pos = bitmap_position(object->sha1);
+ bitmap_pos = bitmap_position(object->oid.hash);
if (bitmap_pos < 0) {
char *name = path_name(path, last);
@@ -467,11 +466,11 @@ static int should_include(struct commit *commit, void *_data)
struct include_data *data = _data;
int bitmap_pos;
- bitmap_pos = bitmap_position(commit->object.sha1);
+ bitmap_pos = bitmap_position(commit->object.oid.hash);
if (bitmap_pos < 0)
bitmap_pos = ext_index_add_object((struct object *)commit, NULL);
- if (!add_to_include_set(data, commit->object.sha1, bitmap_pos)) {
+ if (!add_to_include_set(data, commit->object.oid.hash, bitmap_pos)) {
struct commit_list *parent = commit->parents;
while (parent) {
@@ -507,7 +506,7 @@ static struct bitmap *find_objects(struct rev_info *revs,
roots = roots->next;
if (object->type == OBJ_COMMIT) {
- khiter_t pos = kh_get_sha1(bitmap_git.bitmaps, object->sha1);
+ khiter_t pos = kh_get_sha1(bitmap_git.bitmaps, object->oid.hash);
if (pos < kh_end(bitmap_git.bitmaps)) {
struct stored_bitmap *st = kh_value(bitmap_git.bitmaps, pos);
@@ -549,7 +548,7 @@ static struct bitmap *find_objects(struct rev_info *revs,
int pos;
roots = roots->next;
- pos = bitmap_position(object->sha1);
+ pos = bitmap_position(object->oid.hash);
if (pos < 0 || base == NULL || !bitmap_get(base, pos)) {
object->flags &= ~UNINTERESTING;
@@ -594,7 +593,7 @@ static void show_extended_objects(struct bitmap *objects,
continue;
obj = eindex->objects[i];
- show_reach(obj->sha1, obj->type, 0, eindex->hashes[i], NULL, 0);
+ show_reach(obj->oid.hash, obj->type, 0, eindex->hashes[i], NULL, 0);
}
}
@@ -618,7 +617,7 @@ static void show_objects_for_type(
while (i < objects->word_alloc && ewah_iterator_next(&filter, &it)) {
eword_t word = objects->words[i] & filter;
- for (offset = 0; offset < BITS_IN_WORD; ++offset) {
+ for (offset = 0; offset < BITS_IN_EWORD; ++offset) {
const unsigned char *sha1;
struct revindex_entry *entry;
uint32_t hash = 0;
@@ -640,7 +639,7 @@ static void show_objects_for_type(
show_reach(sha1, object_type, 0, hash, bitmap_git.pack, entry->offset);
}
- pos += BITS_IN_WORD;
+ pos += BITS_IN_EWORD;
i++;
}
}
@@ -651,7 +650,7 @@ static int in_bitmapped_pack(struct object_list *roots)
struct object *object = roots->item;
roots = roots->next;
- if (find_pack_entry_one(object->sha1, bitmap_git.pack) > 0)
+ if (find_pack_entry_one(object->oid.hash, bitmap_git.pack) > 0)
return 1;
}
@@ -681,7 +680,7 @@ int prepare_bitmap_walk(struct rev_info *revs)
struct object *object = pending_e[i].item;
if (object->type == OBJ_NONE)
- parse_object_or_die(object->sha1, NULL);
+ parse_object_or_die(object->oid.hash, NULL);
while (object->type == OBJ_TAG) {
struct tag *tag = (struct tag *) object;
@@ -693,7 +692,7 @@ int prepare_bitmap_walk(struct rev_info *revs)
if (!tag->tagged)
die("bad tag");
- object = parse_object_or_die(tag->tagged->sha1, NULL);
+ object = parse_object_or_die(tag->tagged->oid.hash, NULL);
}
if (object->flags & UNINTERESTING)
@@ -772,7 +771,7 @@ int reuse_partial_packfile_from_bitmap(struct packed_git **packfile,
break;
}
- reuse_objects += BITS_IN_WORD;
+ reuse_objects += BITS_IN_EWORD;
}
#ifdef GIT_BITMAP_DEBUG
@@ -905,9 +904,9 @@ static void test_show_object(struct object *object,
struct bitmap_test_data *tdata = data;
int bitmap_pos;
- bitmap_pos = bitmap_position(object->sha1);
+ bitmap_pos = bitmap_position(object->oid.hash);
if (bitmap_pos < 0)
- die("Object not in bitmap: %s\n", sha1_to_hex(object->sha1));
+ die("Object not in bitmap: %s\n", oid_to_hex(&object->oid));
bitmap_set(tdata->base, bitmap_pos);
display_progress(tdata->prg, ++tdata->seen);
@@ -918,9 +917,9 @@ static void test_show_commit(struct commit *commit, void *data)
struct bitmap_test_data *tdata = data;
int bitmap_pos;
- bitmap_pos = bitmap_position(commit->object.sha1);
+ bitmap_pos = bitmap_position(commit->object.oid.hash);
if (bitmap_pos < 0)
- die("Object not in bitmap: %s\n", sha1_to_hex(commit->object.sha1));
+ die("Object not in bitmap: %s\n", oid_to_hex(&commit->object.oid));
bitmap_set(tdata->base, bitmap_pos);
display_progress(tdata->prg, ++tdata->seen);
@@ -944,20 +943,20 @@ void test_bitmap_walk(struct rev_info *revs)
bitmap_git.version, bitmap_git.entry_count);
root = revs->pending.objects[0].item;
- pos = kh_get_sha1(bitmap_git.bitmaps, root->sha1);
+ pos = kh_get_sha1(bitmap_git.bitmaps, root->oid.hash);
if (pos < kh_end(bitmap_git.bitmaps)) {
struct stored_bitmap *st = kh_value(bitmap_git.bitmaps, pos);
struct ewah_bitmap *bm = lookup_stored_bitmap(st);
fprintf(stderr, "Found bitmap for %s. %d bits / %08x checksum\n",
- sha1_to_hex(root->sha1), (int)bm->bit_size, ewah_checksum(bm));
+ oid_to_hex(&root->oid), (int)bm->bit_size, ewah_checksum(bm));
result = ewah_to_bitmap(bm);
}
if (result == NULL)
- die("Commit %s doesn't have an indexed bitmap", sha1_to_hex(root->sha1));
+ die("Commit %s doesn't have an indexed bitmap", oid_to_hex(&root->oid));
revs->tag_objects = 1;
revs->tree_objects = 1;
@@ -980,6 +979,8 @@ void test_bitmap_walk(struct rev_info *revs)
fprintf(stderr, "OK!\n");
else
fprintf(stderr, "Mismatch!\n");
+
+ bitmap_free(result);
}
static int rebuild_bitmap(uint32_t *reposition,
@@ -995,7 +996,7 @@ static int rebuild_bitmap(uint32_t *reposition,
while (ewah_iterator_next(&word, &it)) {
uint32_t offset, bit_pos;
- for (offset = 0; offset < BITS_IN_WORD; ++offset) {
+ for (offset = 0; offset < BITS_IN_EWORD; ++offset) {
if ((word >> offset) == 0)
break;
@@ -1008,7 +1009,7 @@ static int rebuild_bitmap(uint32_t *reposition,
return -1;
}
- pos += BITS_IN_WORD;
+ pos += BITS_IN_EWORD;
}
return 0;
}