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Commit | Line | Data |
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0009d350 RJ |
1 | #ifndef MIDX_H |
2 | #define MIDX_H | |
a3407730 | 3 | |
56d863e9 | 4 | #include "string-list.h" |
c4d25228 | 5 | |
642e5703 RJ |
6 | struct object_id; |
7 | struct pack_entry; | |
64404a24 | 8 | struct repository; |
5f5ccd95 | 9 | struct bitmapped_pack; |
642e5703 | 10 | |
748b88a0 TB |
11 | #define MIDX_SIGNATURE 0x4d494458 /* "MIDX" */ |
12 | #define MIDX_VERSION 1 | |
13 | #define MIDX_BYTE_FILE_VERSION 4 | |
14 | #define MIDX_BYTE_HASH_VERSION 5 | |
15 | #define MIDX_BYTE_NUM_CHUNKS 6 | |
16 | #define MIDX_BYTE_NUM_PACKS 8 | |
17 | #define MIDX_HEADER_SIZE 12 | |
18 | ||
19 | #define MIDX_CHUNK_ALIGNMENT 4 | |
20 | #define MIDX_CHUNKID_PACKNAMES 0x504e414d /* "PNAM" */ | |
21 | #define MIDX_CHUNKID_BITMAPPEDPACKS 0x42544d50 /* "BTMP" */ | |
22 | #define MIDX_CHUNKID_OIDFANOUT 0x4f494446 /* "OIDF" */ | |
23 | #define MIDX_CHUNKID_OIDLOOKUP 0x4f49444c /* "OIDL" */ | |
24 | #define MIDX_CHUNKID_OBJECTOFFSETS 0x4f4f4646 /* "OOFF" */ | |
25 | #define MIDX_CHUNKID_LARGEOFFSETS 0x4c4f4646 /* "LOFF" */ | |
26 | #define MIDX_CHUNKID_REVINDEX 0x52494458 /* "RIDX" */ | |
27 | #define MIDX_CHUNK_OFFSET_WIDTH (2 * sizeof(uint32_t)) | |
28 | #define MIDX_LARGE_OFFSET_NEEDED 0x80000000 | |
29 | ||
0465a505 | 30 | #define GIT_TEST_MULTI_PACK_INDEX "GIT_TEST_MULTI_PACK_INDEX" |
ff1e653c TB |
31 | #define GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP \ |
32 | "GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP" | |
0465a505 | 33 | |
4d80560c | 34 | struct multi_pack_index { |
c4d25228 DS |
35 | struct multi_pack_index *next; |
36 | ||
4d80560c DS |
37 | const unsigned char *data; |
38 | size_t data_len; | |
39 | ||
f894081d TB |
40 | const uint32_t *revindex_data; |
41 | const uint32_t *revindex_map; | |
42 | size_t revindex_len; | |
43 | ||
4d80560c DS |
44 | uint32_t signature; |
45 | unsigned char version; | |
46 | unsigned char hash_len; | |
47 | unsigned char num_chunks; | |
48 | uint32_t num_packs; | |
49 | uint32_t num_objects; | |
b1e33330 | 50 | int preferred_pack_idx; |
4d80560c | 51 | |
2cf489a3 DS |
52 | int local; |
53 | ||
32f3c541 | 54 | const unsigned char *chunk_pack_names; |
72a9a082 | 55 | size_t chunk_pack_names_len; |
5f5ccd95 TB |
56 | const uint32_t *chunk_bitmapped_packs; |
57 | size_t chunk_bitmapped_packs_len; | |
d7cacf29 | 58 | const uint32_t *chunk_oid_fanout; |
0d5b3a5e | 59 | const unsigned char *chunk_oid_lookup; |
662148c4 DS |
60 | const unsigned char *chunk_object_offsets; |
61 | const unsigned char *chunk_large_offsets; | |
2abd56e9 | 62 | size_t chunk_large_offsets_len; |
7f514b7a | 63 | const unsigned char *chunk_revindex; |
c0fe9b2d | 64 | size_t chunk_revindex_len; |
32f3c541 | 65 | |
3227565c | 66 | const char **pack_names; |
3715a633 | 67 | struct packed_git **packs; |
4d80560c DS |
68 | char object_dir[FLEX_ARRAY]; |
69 | }; | |
70 | ||
efbc3aee | 71 | #define MIDX_PROGRESS (1 << 0) |
38ff7cab | 72 | #define MIDX_WRITE_REV_INDEX (1 << 1) |
c528e179 | 73 | #define MIDX_WRITE_BITMAP (1 << 2) |
caca3c9f | 74 | #define MIDX_WRITE_BITMAP_HASH_CACHE (1 << 3) |
76f14b77 | 75 | #define MIDX_WRITE_BITMAP_LOOKUP_TABLE (1 << 4) |
efbc3aee | 76 | |
0f533c72 | 77 | const unsigned char *get_midx_checksum(struct multi_pack_index *m); |
60980aed TB |
78 | void get_midx_filename(struct strbuf *out, const char *object_dir); |
79 | void get_midx_rev_filename(struct strbuf *out, struct multi_pack_index *m); | |
f894081d | 80 | |
2cf489a3 | 81 | struct multi_pack_index *load_multi_pack_index(const char *object_dir, int local); |
64404a24 | 82 | int prepare_midx_pack(struct repository *r, struct multi_pack_index *m, uint32_t pack_int_id); |
5f5ccd95 TB |
83 | int nth_bitmapped_pack(struct repository *r, struct multi_pack_index *m, |
84 | struct bitmapped_pack *bp, uint32_t pack_int_id); | |
3715a633 | 85 | int bsearch_midx(const struct object_id *oid, struct multi_pack_index *m, uint32_t *result); |
62f2c1b5 TB |
86 | off_t nth_midxed_offset(struct multi_pack_index *m, uint32_t pos); |
87 | uint32_t nth_midxed_pack_int_id(struct multi_pack_index *m, uint32_t pos); | |
8aac67a1 DS |
88 | struct object_id *nth_midxed_object_oid(struct object_id *oid, |
89 | struct multi_pack_index *m, | |
90 | uint32_t n); | |
64404a24 | 91 | int fill_midx_entry(struct repository *r, const struct object_id *oid, struct pack_entry *e, struct multi_pack_index *m); |
307d75bb TB |
92 | int midx_contains_pack(struct multi_pack_index *m, |
93 | const char *idx_or_pack_name); | |
94 | int midx_locate_pack(struct multi_pack_index *m, const char *idx_or_pack_name, | |
95 | uint32_t *pos); | |
b1e33330 | 96 | int midx_preferred_pack(struct multi_pack_index *m, uint32_t *pack_int_id); |
2cf489a3 | 97 | int prepare_multi_pack_index_one(struct repository *r, const char *object_dir, int local); |
4d80560c | 98 | |
56d863e9 TB |
99 | /* |
100 | * Variant of write_midx_file which writes a MIDX containing only the packs | |
101 | * specified in packs_to_include. | |
102 | */ | |
08944d1c TB |
103 | int write_midx_file(const char *object_dir, |
104 | const char *preferred_pack_name, | |
105 | const char *refs_snapshot, | |
106 | unsigned flags); | |
56d863e9 TB |
107 | int write_midx_file_only(const char *object_dir, |
108 | struct string_list *packs_to_include, | |
109 | const char *preferred_pack_name, | |
08944d1c | 110 | const char *refs_snapshot, |
56d863e9 | 111 | unsigned flags); |
1dcd9f20 | 112 | void clear_midx_file(struct repository *r); |
efbc3aee WB |
113 | int verify_midx_file(struct repository *r, const char *object_dir, unsigned flags); |
114 | int expire_midx_packs(struct repository *r, const char *object_dir, unsigned flags); | |
115 | int midx_repack(struct repository *r, const char *object_dir, size_t batch_size, unsigned flags); | |
a3407730 | 116 | |
1dcd9f20 | 117 | void close_midx(struct multi_pack_index *m); |
a3407730 DS |
118 | |
119 | #endif |