commit-graph: define GIT_TEST_COMMIT_GRAPH
[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
11 struct commit;
12
13 char *get_commit_graph_filename(const char *obj_dir);
14
15 /*
16 * Given a commit struct, try to fill the commit struct info, including:
17 * 1. tree object
18 * 2. date
19 * 3. parents.
20 *
21 * Returns 1 if and only if the commit was found in the packed graph.
22 *
23 * See parse_commit_buffer() for the fallback after this call.
24 */
25 int parse_commit_in_graph(struct repository *r, struct commit *item);
26
27 /*
28 * It is possible that we loaded commit contents from the commit buffer,
29 * but we also want to ensure the commit-graph content is correctly
30 * checked and filled. Fill the graph_pos and generation members of
31 * the given commit.
32 */
33 void load_commit_graph_info(struct repository *r, struct commit *item);
34
35 struct tree *get_commit_tree_in_graph(struct repository *r,
36 const struct commit *c);
37
38 struct commit_graph {
39 int graph_fd;
40
41 const unsigned char *data;
42 size_t data_len;
43
44 unsigned char hash_len;
45 unsigned char num_chunks;
46 uint32_t num_commits;
47 struct object_id oid;
48
49 const uint32_t *chunk_oid_fanout;
50 const unsigned char *chunk_oid_lookup;
51 const unsigned char *chunk_commit_data;
52 const unsigned char *chunk_large_edges;
53 };
54
55 struct commit_graph *load_commit_graph_one(const char *graph_file);
56
57 void write_commit_graph_reachable(const char *obj_dir, int append);
58 void write_commit_graph(const char *obj_dir,
59 struct string_list *pack_indexes,
60 struct string_list *commit_hex,
61 int append);
62
63 int verify_commit_graph(struct repository *r, struct commit_graph *g);
64
65 void free_commit_graph(struct commit_graph *);
66
67 #endif