Fifth batch for 2.19 cycle
[git/git.git] / pack-bitmap.h
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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 7
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8struct bitmap_disk_header {
9 char magic[4];
10 uint16_t version;
11 uint16_t options;
12 uint32_t entry_count;
13 unsigned char checksum[20];
14};
15
16static const char BITMAP_IDX_SIGNATURE[] = {'B', 'I', 'T', 'M'};
17
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18#define NEEDS_BITMAP (1u<<22)
19
fff42755 20enum pack_bitmap_opts {
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21 BITMAP_OPT_FULL_DAG = 1,
22 BITMAP_OPT_HASH_CACHE = 4,
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23};
24
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25enum pack_bitmap_flags {
26 BITMAP_FLAG_REUSE = 0x1
27};
28
fff42755 29typedef int (*show_reachable_fn)(
20664967 30 const struct object_id *oid,
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31 enum object_type type,
32 int flags,
33 uint32_t hash,
34 struct packed_git *found_pack,
35 off_t found_offset);
36
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37struct bitmap_index;
38
39struct bitmap_index *prepare_bitmap_git(void);
40void count_bitmap_commit_list(struct bitmap_index *, uint32_t *commits,
41 uint32_t *trees, uint32_t *blobs, uint32_t *tags);
42void traverse_bitmap_commit_list(struct bitmap_index *,
43 show_reachable_fn show_reachable);
fff42755 44void test_bitmap_walk(struct rev_info *revs);
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45struct bitmap_index *prepare_bitmap_walk(struct rev_info *revs);
46int reuse_partial_packfile_from_bitmap(struct bitmap_index *,
47 struct packed_git **packfile,
48 uint32_t *entries, off_t *up_to);
49int rebuild_existing_bitmaps(struct bitmap_index *, struct packing_data *mapping,
50 khash_sha1 *reused_bitmaps, int show_progress);
f3c23db2 51void free_bitmap_index(struct bitmap_index *);
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52
53void bitmap_writer_show_progress(int show);
54void bitmap_writer_set_checksum(unsigned char *sha1);
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55void bitmap_writer_build_type_index(struct packing_data *to_pack,
56 struct pack_idx_entry **index,
57 uint32_t index_nr);
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58void bitmap_writer_reuse_bitmaps(struct packing_data *to_pack);
59void bitmap_writer_select_commits(struct commit **indexed_commits,
60 unsigned int indexed_commits_nr, int max_bitmaps);
61void bitmap_writer_build(struct packing_data *to_pack);
62void bitmap_writer_finish(struct pack_idx_entry **index,
63 uint32_t index_nr,
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64 const char *filename,
65 uint16_t options);
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66
67#endif