4 #include "git-compat-util.h"
5 #include "repository.h"
6 #include "string-list.h"
8 #include "object-store.h"
10 #define GIT_TEST_COMMIT_GRAPH "GIT_TEST_COMMIT_GRAPH"
11 #define GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD "GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD"
15 char *get_commit_graph_filename(struct object_directory *odb);
16 int open_commit_graph(const char *graph_file, int *fd, struct stat *st);
19 * Given a commit struct, try to fill the commit struct info, including:
24 * Returns 1 if and only if the commit was found in the packed graph.
26 * See parse_commit_buffer() for the fallback after this call.
28 int parse_commit_in_graph(struct repository *r, struct commit *item);
31 * It is possible that we loaded commit contents from the commit buffer,
32 * but we also want to ensure the commit-graph content is correctly
33 * checked and filled. Fill the graph_pos and generation members of
36 void load_commit_graph_info(struct repository *r, struct commit *item);
38 struct tree *get_commit_tree_in_graph(struct repository *r,
39 const struct commit *c);
44 const unsigned char *data;
47 unsigned char hash_len;
48 unsigned char num_chunks;
52 struct object_directory *odb;
54 uint32_t num_commits_in_base;
55 struct commit_graph *base_graph;
57 const uint32_t *chunk_oid_fanout;
58 const unsigned char *chunk_oid_lookup;
59 const unsigned char *chunk_commit_data;
60 const unsigned char *chunk_extra_edges;
61 const unsigned char *chunk_base_graphs;
64 struct commit_graph *load_commit_graph_one_fd_st(int fd, struct stat *st,
65 struct object_directory *odb);
66 struct commit_graph *read_commit_graph_one(struct repository *r,
67 struct object_directory *odb);
68 struct commit_graph *parse_commit_graph(void *graph_map, int fd,
72 * Return 1 if and only if the repository has a commit-graph
73 * file and generation numbers are computed in that file.
75 int generation_numbers_enabled(struct repository *r);
77 enum commit_graph_write_flags {
78 COMMIT_GRAPH_WRITE_APPEND = (1 << 0),
79 COMMIT_GRAPH_WRITE_PROGRESS = (1 << 1),
80 COMMIT_GRAPH_WRITE_SPLIT = (1 << 2),
81 /* Make sure that each OID in the input is a valid commit OID. */
82 COMMIT_GRAPH_WRITE_CHECK_OIDS = (1 << 3)
85 enum commit_graph_split_flags {
86 COMMIT_GRAPH_SPLIT_UNSPECIFIED = 0,
87 COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED = 1,
88 COMMIT_GRAPH_SPLIT_REPLACE = 2
91 struct split_commit_graph_opts {
94 timestamp_t expire_time;
95 enum commit_graph_split_flags flags;
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.
104 int write_commit_graph_reachable(struct object_directory *odb,
105 enum commit_graph_write_flags flags,
106 const struct split_commit_graph_opts *split_opts);
107 int write_commit_graph(struct object_directory *odb,
108 struct string_list *pack_indexes,
109 struct string_list *commit_hex,
110 enum commit_graph_write_flags flags,
111 const struct split_commit_graph_opts *split_opts);
113 #define COMMIT_GRAPH_VERIFY_SHALLOW (1 << 0)
115 int verify_commit_graph(struct repository *r, struct commit_graph *g, int flags);
117 void close_commit_graph(struct raw_object_store *);
118 void free_commit_graph(struct commit_graph *);
121 * Disable further use of the commit graph in this process when parsing a
124 void disable_commit_graph(struct repository *r);