commit-graph: add missing forward declaration
[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
8 struct commit;
9
10 char *get_commit_graph_filename(const char *obj_dir);
11
12 /*
13 * Given a commit struct, try to fill the commit struct info, including:
14 * 1. tree object
15 * 2. date
16 * 3. parents.
17 *
18 * Returns 1 if and only if the commit was found in the packed graph.
19 *
20 * See parse_commit_buffer() for the fallback after this call.
21 */
22 int parse_commit_in_graph(struct commit *item);
23
24 /*
25 * It is possible that we loaded commit contents from the commit buffer,
26 * but we also want to ensure the commit-graph content is correctly
27 * checked and filled. Fill the graph_pos and generation members of
28 * the given commit.
29 */
30 void load_commit_graph_info(struct commit *item);
31
32 struct tree *get_commit_tree_in_graph(const struct commit *c);
33
34 struct commit_graph {
35 int graph_fd;
36
37 const unsigned char *data;
38 size_t data_len;
39
40 unsigned char hash_len;
41 unsigned char num_chunks;
42 uint32_t num_commits;
43 struct object_id oid;
44
45 const uint32_t *chunk_oid_fanout;
46 const unsigned char *chunk_oid_lookup;
47 const unsigned char *chunk_commit_data;
48 const unsigned char *chunk_large_edges;
49 };
50
51 struct commit_graph *load_commit_graph_one(const char *graph_file);
52
53 void write_commit_graph_reachable(const char *obj_dir, int append);
54 void write_commit_graph(const char *obj_dir,
55 struct string_list *pack_indexes,
56 struct string_list *commit_hex,
57 int append);
58
59 int verify_commit_graph(struct repository *r, struct commit_graph *g);
60
61 #endif