Merge branch 'nd/completion-no-cache-failure' into maint
[git/git.git] / commit-graph.h
1 #ifndef COMMIT_GRAPH_H
2 #define COMMIT_GRAPH_H
3
4 #include "git-compat-util.h"
5 #include "repository.h"
6 #include "string-list.h"
7 #include "cache.h"
8
9 #define GIT_TEST_COMMIT_GRAPH "GIT_TEST_COMMIT_GRAPH"
10 #define GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD "GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD"
11
12 struct commit;
13
14 char *get_commit_graph_filename(const char *obj_dir);
15 int open_commit_graph(const char *graph_file, int *fd, struct stat *st);
16
17 /*
18 * Given a commit struct, try to fill the commit struct info, including:
19 * 1. tree object
20 * 2. date
21 * 3. parents.
22 *
23 * Returns 1 if and only if the commit was found in the packed graph.
24 *
25 * See parse_commit_buffer() for the fallback after this call.
26 */
27 int parse_commit_in_graph(struct repository *r, struct commit *item);
28
29 /*
30 * It is possible that we loaded commit contents from the commit buffer,
31 * but we also want to ensure the commit-graph content is correctly
32 * checked and filled. Fill the graph_pos and generation members of
33 * the given commit.
34 */
35 void load_commit_graph_info(struct repository *r, struct commit *item);
36
37 struct tree *get_commit_tree_in_graph(struct repository *r,
38 const struct commit *c);
39
40 struct commit_graph {
41 int graph_fd;
42
43 const unsigned char *data;
44 size_t data_len;
45
46 unsigned char hash_len;
47 unsigned char num_chunks;
48 uint32_t num_commits;
49 struct object_id oid;
50
51 const uint32_t *chunk_oid_fanout;
52 const unsigned char *chunk_oid_lookup;
53 const unsigned char *chunk_commit_data;
54 const unsigned char *chunk_extra_edges;
55 };
56
57 struct commit_graph *load_commit_graph_one_fd_st(int fd, struct stat *st);
58
59 struct commit_graph *parse_commit_graph(void *graph_map, int fd,
60 size_t graph_size);
61
62 /*
63 * Return 1 if and only if the repository has a commit-graph
64 * file and generation numbers are computed in that file.
65 */
66 int generation_numbers_enabled(struct repository *r);
67
68 void write_commit_graph_reachable(const char *obj_dir, int append,
69 int report_progress);
70 void write_commit_graph(const char *obj_dir,
71 struct string_list *pack_indexes,
72 struct string_list *commit_hex,
73 int append, int report_progress);
74
75 int verify_commit_graph(struct repository *r, struct commit_graph *g);
76
77 void close_commit_graph(struct repository *);
78 void free_commit_graph(struct commit_graph *);
79
80 #endif