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08fd81c9 DS |
1 | #ifndef COMMIT_GRAPH_H |
2 | #define COMMIT_GRAPH_H | |
3 | ||
2a2e32bd | 4 | #include "git-compat-util.h" |
283e68c7 | 5 | #include "repository.h" |
d88b14b3 | 6 | #include "string-list.h" |
ef3ca954 | 7 | #include "cache.h" |
0bd52e27 | 8 | #include "object-store.h" |
2a2e32bd | 9 | |
859fdc0c | 10 | #define GIT_TEST_COMMIT_GRAPH "GIT_TEST_COMMIT_GRAPH" |
43d35618 | 11 | #define GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD "GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD" |
d5b873c8 | 12 | #define GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS "GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS" |
859fdc0c | 13 | |
e5c5ca27 | 14 | struct commit; |
76ffbca7 | 15 | struct bloom_filter_settings; |
e5c5ca27 | 16 | |
ad2dd5bb | 17 | char *get_commit_graph_filename(struct object_directory *odb); |
61df89c8 | 18 | int open_commit_graph(const char *graph_file, int *fd, struct stat *st); |
2a2e32bd | 19 | |
177722b3 DS |
20 | /* |
21 | * Given a commit struct, try to fill the commit struct info, including: | |
22 | * 1. tree object | |
23 | * 2. date | |
24 | * 3. parents. | |
25 | * | |
26 | * Returns 1 if and only if the commit was found in the packed graph. | |
27 | * | |
28 | * See parse_commit_buffer() for the fallback after this call. | |
29 | */ | |
dade47c0 | 30 | int parse_commit_in_graph(struct repository *r, struct commit *item); |
177722b3 | 31 | |
e2838d85 DS |
32 | /* |
33 | * It is possible that we loaded commit contents from the commit buffer, | |
34 | * but we also want to ensure the commit-graph content is correctly | |
35 | * checked and filled. Fill the graph_pos and generation members of | |
36 | * the given commit. | |
37 | */ | |
dade47c0 | 38 | void load_commit_graph_info(struct repository *r, struct commit *item); |
e2838d85 | 39 | |
dade47c0 JT |
40 | struct tree *get_commit_tree_in_graph(struct repository *r, |
41 | const struct commit *c); | |
7b8a21db | 42 | |
2a2e32bd DS |
43 | struct commit_graph { |
44 | int graph_fd; | |
45 | ||
46 | const unsigned char *data; | |
47 | size_t data_len; | |
48 | ||
49 | unsigned char hash_len; | |
50 | unsigned char num_chunks; | |
51 | uint32_t num_commits; | |
52 | struct object_id oid; | |
6c622f9f | 53 | char *filename; |
13c24992 | 54 | struct object_directory *odb; |
2a2e32bd | 55 | |
d4f4d60f DS |
56 | uint32_t num_commits_in_base; |
57 | struct commit_graph *base_graph; | |
58 | ||
2a2e32bd DS |
59 | const uint32_t *chunk_oid_fanout; |
60 | const unsigned char *chunk_oid_lookup; | |
61 | const unsigned char *chunk_commit_data; | |
5af7417b | 62 | const unsigned char *chunk_extra_edges; |
118bd570 | 63 | const unsigned char *chunk_base_graphs; |
76ffbca7 GS |
64 | const unsigned char *chunk_bloom_indexes; |
65 | const unsigned char *chunk_bloom_data; | |
66 | ||
67 | struct bloom_filter_settings *bloom_filter_settings; | |
2a2e32bd DS |
68 | }; |
69 | ||
a7df60ca TB |
70 | struct commit_graph *load_commit_graph_one_fd_st(int fd, struct stat *st, |
71 | struct object_directory *odb); | |
13c24992 TB |
72 | struct commit_graph *read_commit_graph_one(struct repository *r, |
73 | struct object_directory *odb); | |
aa658574 JS |
74 | struct commit_graph *parse_commit_graph(void *graph_map, int fd, |
75 | size_t graph_size); | |
76 | ||
6cc01743 DS |
77 | /* |
78 | * Return 1 if and only if the repository has a commit-graph | |
79 | * file and generation numbers are computed in that file. | |
80 | */ | |
81 | int generation_numbers_enabled(struct repository *r); | |
82 | ||
39d88318 SG |
83 | enum commit_graph_write_flags { |
84 | COMMIT_GRAPH_WRITE_APPEND = (1 << 0), | |
85 | COMMIT_GRAPH_WRITE_PROGRESS = (1 << 1), | |
7c5c9b9c SG |
86 | COMMIT_GRAPH_WRITE_SPLIT = (1 << 2), |
87 | /* Make sure that each OID in the input is a valid commit OID. */ | |
f97b9325 GS |
88 | COMMIT_GRAPH_WRITE_CHECK_OIDS = (1 << 3), |
89 | COMMIT_GRAPH_WRITE_BLOOM_FILTERS = (1 << 4), | |
39d88318 | 90 | }; |
5af80394 | 91 | |
c2bc6e6a DS |
92 | struct split_commit_graph_opts { |
93 | int size_multiple; | |
94 | int max_commits; | |
95 | timestamp_t expire_time; | |
96 | }; | |
97 | ||
e103f727 DS |
98 | /* |
99 | * The write_commit_graph* methods return zero on success | |
100 | * and a negative value on failure. Note that if the repository | |
101 | * is not compatible with the commit-graph feature, then the | |
102 | * methods will return 0 without writing a commit-graph. | |
103 | */ | |
0bd52e27 | 104 | int write_commit_graph_reachable(struct object_directory *odb, |
39d88318 | 105 | enum commit_graph_write_flags flags, |
c2bc6e6a | 106 | const struct split_commit_graph_opts *split_opts); |
0bd52e27 | 107 | int write_commit_graph(struct object_directory *odb, |
e103f727 DS |
108 | struct string_list *pack_indexes, |
109 | struct string_list *commit_hex, | |
39d88318 | 110 | enum commit_graph_write_flags flags, |
c2bc6e6a | 111 | const struct split_commit_graph_opts *split_opts); |
08fd81c9 | 112 | |
3da4b609 DS |
113 | #define COMMIT_GRAPH_VERIFY_SHALLOW (1 << 0) |
114 | ||
115 | int verify_commit_graph(struct repository *r, struct commit_graph *g, int flags); | |
283e68c7 | 116 | |
c3a3a964 | 117 | void close_commit_graph(struct raw_object_store *); |
c3756d5b JT |
118 | void free_commit_graph(struct commit_graph *); |
119 | ||
6abada18 JK |
120 | /* |
121 | * Disable further use of the commit graph in this process when parsing a | |
122 | * "struct commit". | |
123 | */ | |
124 | void disable_commit_graph(struct repository *r); | |
125 | ||
08fd81c9 | 126 | #endif |