commit -a -m: allow the top-level tree to become empty again

[thirdparty/git.git] / pack-bitmap.h

diff --git a/pack-bitmap.h b/pack-bitmap.h
index 99d733eb264e9f77b83da58033db5bec44b6702b..f0180b5276b15d6567eda9984637333811fa851b 100644 (file)
--- a/pack-bitmap.h
+++ b/pack-bitmap.h
@@ -10,7 +10,6 @@
 struct commit;
 struct repository;
 struct rev_info;
-struct list_objects_filter_options;
 
 static const char BITMAP_IDX_SIGNATURE[] = {'B', 'I', 'T', 'M'};
 
@@ -24,9 +23,19 @@ struct bitmap_disk_header {
 
 #define NEEDS_BITMAP (1u<<22)
 
+/*
+ * The width in bytes of a single triplet in the lookup table
+ * extension:
+ *     (commit_pos, offset, xor_row)
+ *
+ * whose fields ar 32-, 64-, 32- bits wide, respectively.
+ */
+#define BITMAP_LOOKUP_TABLE_TRIPLET_WIDTH (16)
+
 enum pack_bitmap_opts {
-       BITMAP_OPT_FULL_DAG = 1,
-       BITMAP_OPT_HASH_CACHE = 4,
+       BITMAP_OPT_FULL_DAG = 0x1,
+       BITMAP_OPT_HASH_CACHE = 0x4,
+       BITMAP_OPT_LOOKUP_TABLE = 0x10,
 };
 
 enum pack_bitmap_flags {
@@ -44,6 +53,7 @@ typedef int (*show_reachable_fn)(
 struct bitmap_index;
 
 struct bitmap_index *prepare_bitmap_git(struct repository *r);
+struct bitmap_index *prepare_midx_bitmap_git(struct multi_pack_index *midx);
 void count_bitmap_commit_list(struct bitmap_index *, uint32_t *commits,
                              uint32_t *trees, uint32_t *blobs, uint32_t *tags);
 void traverse_bitmap_commit_list(struct bitmap_index *,
@@ -51,9 +61,10 @@ void traverse_bitmap_commit_list(struct bitmap_index *,
                                 show_reachable_fn show_reachable);
 void test_bitmap_walk(struct rev_info *revs);
 int test_bitmap_commits(struct repository *r);
+int test_bitmap_hashes(struct repository *r);
 struct bitmap_index *prepare_bitmap_walk(struct rev_info *revs,
-                                        struct list_objects_filter_options *filter,
                                         int filter_provided_objects);
+uint32_t midx_preferred_pack(struct bitmap_index *bitmap_git);
 int reuse_partial_packfile_from_bitmap(struct bitmap_index *,
                                       struct packed_git **packfile,
                                       uint32_t *entries,
@@ -74,7 +85,7 @@ int bitmap_has_oid_in_uninteresting(struct bitmap_index *, const struct object_i
 off_t get_disk_usage_from_bitmap(struct bitmap_index *, struct rev_info *);
 
 void bitmap_writer_show_progress(int show);
-void bitmap_writer_set_checksum(unsigned char *sha1);
+void bitmap_writer_set_checksum(const unsigned char *sha1);
 void bitmap_writer_build_type_index(struct packing_data *to_pack,
                                    struct pack_idx_entry **index,
                                    uint32_t index_nr);
@@ -87,12 +98,17 @@ struct ewah_bitmap *bitmap_for_commit(struct bitmap_index *bitmap_git,
                                      struct commit *commit);
 void bitmap_writer_select_commits(struct commit **indexed_commits,
                unsigned int indexed_commits_nr, int max_bitmaps);
-void bitmap_writer_build(struct packing_data *to_pack);
+int bitmap_writer_build(struct packing_data *to_pack);
 void bitmap_writer_finish(struct pack_idx_entry **index,
                          uint32_t index_nr,
                          const char *filename,
                          uint16_t options);
+char *midx_bitmap_filename(struct multi_pack_index *midx);
+char *pack_bitmap_filename(struct packed_git *p);
+
+int bitmap_is_midx(struct bitmap_index *bitmap_git);
 
 const struct string_list *bitmap_preferred_tips(struct repository *r);
+int bitmap_is_preferred_refname(struct repository *r, const char *refname);
 
 #endif