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1 | #ifndef PACK_BITMAP_H | |
2 | #define PACK_BITMAP_H | |
3 | ||
4 | #include "ewah/ewok.h" | |
5 | #include "khash.h" | |
6 | #include "pack.h" | |
7 | #include "pack-objects.h" | |
8 | ||
9 | struct commit; | |
10 | struct repository; | |
11 | struct rev_info; | |
12 | struct list_objects_filter_options; | |
13 | ||
14 | static const char BITMAP_IDX_SIGNATURE[] = {'B', 'I', 'T', 'M'}; | |
15 | ||
16 | struct bitmap_disk_header { | |
17 | char magic[ARRAY_SIZE(BITMAP_IDX_SIGNATURE)]; | |
18 | uint16_t version; | |
19 | uint16_t options; | |
20 | uint32_t entry_count; | |
21 | unsigned char checksum[GIT_MAX_RAWSZ]; | |
22 | }; | |
23 | ||
24 | #define NEEDS_BITMAP (1u<<22) | |
25 | ||
26 | enum pack_bitmap_opts { | |
27 | BITMAP_OPT_FULL_DAG = 1, | |
28 | BITMAP_OPT_HASH_CACHE = 4, | |
29 | }; | |
30 | ||
31 | enum pack_bitmap_flags { | |
32 | BITMAP_FLAG_REUSE = 0x1 | |
33 | }; | |
34 | ||
35 | typedef int (*show_reachable_fn)( | |
36 | const struct object_id *oid, | |
37 | enum object_type type, | |
38 | int flags, | |
39 | uint32_t hash, | |
40 | struct packed_git *found_pack, | |
41 | off_t found_offset); | |
42 | ||
43 | struct bitmap_index; | |
44 | ||
45 | struct bitmap_index *prepare_bitmap_git(struct repository *r); | |
46 | void count_bitmap_commit_list(struct bitmap_index *, uint32_t *commits, | |
47 | uint32_t *trees, uint32_t *blobs, uint32_t *tags); | |
48 | void traverse_bitmap_commit_list(struct bitmap_index *, | |
49 | struct rev_info *revs, | |
50 | show_reachable_fn show_reachable); | |
51 | void test_bitmap_walk(struct rev_info *revs); | |
52 | struct bitmap_index *prepare_bitmap_walk(struct rev_info *revs, | |
53 | struct list_objects_filter_options *filter); | |
54 | int reuse_partial_packfile_from_bitmap(struct bitmap_index *, | |
55 | struct packed_git **packfile, | |
56 | uint32_t *entries, | |
57 | struct bitmap **reuse_out); | |
58 | int rebuild_existing_bitmaps(struct bitmap_index *, struct packing_data *mapping, | |
59 | kh_oid_map_t *reused_bitmaps, int show_progress); | |
60 | void free_bitmap_index(struct bitmap_index *); | |
61 | int bitmap_walk_contains(struct bitmap_index *, | |
62 | struct bitmap *bitmap, const struct object_id *oid); | |
63 | ||
64 | /* | |
65 | * After a traversal has been performed by prepare_bitmap_walk(), this can be | |
66 | * queried to see if a particular object was reachable from any of the | |
67 | * objects flagged as UNINTERESTING. | |
68 | */ | |
69 | int bitmap_has_oid_in_uninteresting(struct bitmap_index *, const struct object_id *oid); | |
70 | ||
71 | void bitmap_writer_show_progress(int show); | |
72 | void bitmap_writer_set_checksum(unsigned char *sha1); | |
73 | void bitmap_writer_build_type_index(struct packing_data *to_pack, | |
74 | struct pack_idx_entry **index, | |
75 | uint32_t index_nr); | |
76 | void bitmap_writer_reuse_bitmaps(struct packing_data *to_pack); | |
77 | void bitmap_writer_select_commits(struct commit **indexed_commits, | |
78 | unsigned int indexed_commits_nr, int max_bitmaps); | |
79 | void bitmap_writer_build(struct packing_data *to_pack); | |
80 | void bitmap_writer_finish(struct pack_idx_entry **index, | |
81 | uint32_t index_nr, | |
82 | const char *filename, | |
83 | uint16_t options); | |
84 | ||
85 | #endif |