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fff42755 VM |
1 | #ifndef PACK_BITMAP_H |
2 | #define PACK_BITMAP_H | |
3 | ||
4 | #include "ewah/ewok.h" | |
5 | #include "khash.h" | |
7cc8f971 | 6 | #include "pack-objects.h" |
fff42755 VM |
7 | |
8 | struct bitmap_disk_entry { | |
9 | uint32_t object_pos; | |
10 | uint8_t xor_offset; | |
11 | uint8_t flags; | |
12 | } __attribute__((packed)); | |
13 | ||
14 | struct bitmap_disk_header { | |
15 | char magic[4]; | |
16 | uint16_t version; | |
17 | uint16_t options; | |
18 | uint32_t entry_count; | |
19 | unsigned char checksum[20]; | |
20 | }; | |
21 | ||
22 | static const char BITMAP_IDX_SIGNATURE[] = {'B', 'I', 'T', 'M'}; | |
23 | ||
7cc8f971 VM |
24 | #define NEEDS_BITMAP (1u<<22) |
25 | ||
fff42755 | 26 | enum pack_bitmap_opts { |
ae4f07fb VM |
27 | BITMAP_OPT_FULL_DAG = 1, |
28 | BITMAP_OPT_HASH_CACHE = 4, | |
fff42755 VM |
29 | }; |
30 | ||
7cc8f971 VM |
31 | enum pack_bitmap_flags { |
32 | BITMAP_FLAG_REUSE = 0x1 | |
33 | }; | |
34 | ||
fff42755 VM |
35 | typedef int (*show_reachable_fn)( |
36 | const unsigned char *sha1, | |
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 | int prepare_bitmap_git(void); | |
44 | void count_bitmap_commit_list(uint32_t *commits, uint32_t *trees, uint32_t *blobs, uint32_t *tags); | |
45 | void traverse_bitmap_commit_list(show_reachable_fn show_reachable); | |
46 | void test_bitmap_walk(struct rev_info *revs); | |
47 | char *pack_bitmap_filename(struct packed_git *p); | |
48 | int prepare_bitmap_walk(struct rev_info *revs); | |
49 | int reuse_partial_packfile_from_bitmap(struct packed_git **packfile, uint32_t *entries, off_t *up_to); | |
7cc8f971 VM |
50 | int rebuild_existing_bitmaps(struct packing_data *mapping, khash_sha1 *reused_bitmaps, int show_progress); |
51 | ||
52 | void bitmap_writer_show_progress(int show); | |
53 | void bitmap_writer_set_checksum(unsigned char *sha1); | |
54 | void bitmap_writer_build_type_index(struct pack_idx_entry **index, uint32_t index_nr); | |
55 | void bitmap_writer_reuse_bitmaps(struct packing_data *to_pack); | |
56 | void bitmap_writer_select_commits(struct commit **indexed_commits, | |
57 | unsigned int indexed_commits_nr, int max_bitmaps); | |
58 | void bitmap_writer_build(struct packing_data *to_pack); | |
59 | void bitmap_writer_finish(struct pack_idx_entry **index, | |
60 | uint32_t index_nr, | |
ae4f07fb VM |
61 | const char *filename, |
62 | uint16_t options); | |
fff42755 VM |
63 | |
64 | #endif |