4 #include "git-compat-util.h"
5 #include "object-store.h"
8 #define GIT_TEST_COMMIT_GRAPH "GIT_TEST_COMMIT_GRAPH"
9 #define GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE "GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE"
10 #define GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS "GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS"
13 * This method is only used to enhance coverage of the commit-graph
14 * feature in the test suite with the GIT_TEST_COMMIT_GRAPH and
15 * GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS environment variables. Do not
16 * call this method oustide of a builtin, and only if you know what
19 void git_test_write_commit_graph_or_die(void);
22 struct bloom_filter_settings
;
24 struct raw_object_store
;
27 char *get_commit_graph_filename(struct object_directory
*odb
);
28 int open_commit_graph(const char *graph_file
, int *fd
, struct stat
*st
);
31 * Given a commit struct, try to fill the commit struct info, including:
36 * Returns 1 if and only if the commit was found in the packed graph.
38 * See parse_commit_buffer() for the fallback after this call.
40 int parse_commit_in_graph(struct repository
*r
, struct commit
*item
);
43 * It is possible that we loaded commit contents from the commit buffer,
44 * but we also want to ensure the commit-graph content is correctly
45 * checked and filled. Fill the graph_pos and generation members of
48 void load_commit_graph_info(struct repository
*r
, struct commit
*item
);
50 struct tree
*get_commit_tree_in_graph(struct repository
*r
,
51 const struct commit
*c
);
54 const unsigned char *data
;
57 unsigned char hash_len
;
58 unsigned char num_chunks
;
62 struct object_directory
*odb
;
64 uint32_t num_commits_in_base
;
65 struct commit_graph
*base_graph
;
67 const uint32_t *chunk_oid_fanout
;
68 const unsigned char *chunk_oid_lookup
;
69 const unsigned char *chunk_commit_data
;
70 const unsigned char *chunk_extra_edges
;
71 const unsigned char *chunk_base_graphs
;
72 const unsigned char *chunk_bloom_indexes
;
73 const unsigned char *chunk_bloom_data
;
75 struct bloom_filter_settings
*bloom_filter_settings
;
78 struct commit_graph
*load_commit_graph_one_fd_st(struct repository
*r
,
79 int fd
, struct stat
*st
,
80 struct object_directory
*odb
);
81 struct commit_graph
*read_commit_graph_one(struct repository
*r
,
82 struct object_directory
*odb
);
83 struct commit_graph
*parse_commit_graph(struct repository
*r
,
84 void *graph_map
, size_t graph_size
);
87 * Return 1 if and only if the repository has a commit-graph
88 * file and generation numbers are computed in that file.
90 int generation_numbers_enabled(struct repository
*r
);
92 struct bloom_filter_settings
*get_bloom_filter_settings(struct repository
*r
);
94 enum commit_graph_write_flags
{
95 COMMIT_GRAPH_WRITE_APPEND
= (1 << 0),
96 COMMIT_GRAPH_WRITE_PROGRESS
= (1 << 1),
97 COMMIT_GRAPH_WRITE_SPLIT
= (1 << 2),
98 COMMIT_GRAPH_WRITE_BLOOM_FILTERS
= (1 << 3),
99 COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS
= (1 << 4),
102 enum commit_graph_split_flags
{
103 COMMIT_GRAPH_SPLIT_UNSPECIFIED
= 0,
104 COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED
= 1,
105 COMMIT_GRAPH_SPLIT_REPLACE
= 2
108 struct split_commit_graph_opts
{
111 timestamp_t expire_time
;
112 enum commit_graph_split_flags flags
;
116 * The write_commit_graph* methods return zero on success
117 * and a negative value on failure. Note that if the repository
118 * is not compatible with the commit-graph feature, then the
119 * methods will return 0 without writing a commit-graph.
121 int write_commit_graph_reachable(struct object_directory
*odb
,
122 enum commit_graph_write_flags flags
,
123 const struct split_commit_graph_opts
*split_opts
);
124 int write_commit_graph(struct object_directory
*odb
,
125 struct string_list
*pack_indexes
,
126 struct oidset
*commits
,
127 enum commit_graph_write_flags flags
,
128 const struct split_commit_graph_opts
*split_opts
);
130 #define COMMIT_GRAPH_VERIFY_SHALLOW (1 << 0)
132 int verify_commit_graph(struct repository
*r
, struct commit_graph
*g
, int flags
);
134 void close_commit_graph(struct raw_object_store
*);
135 void free_commit_graph(struct commit_graph
*);
138 * Disable further use of the commit graph in this process when parsing a
141 void disable_commit_graph(struct repository
*r
);
143 struct commit_graph_data
{
149 * Commits should be parsed before accessing generation, graph positions.
151 uint32_t commit_graph_generation(const struct commit
*);
152 uint32_t commit_graph_position(const struct commit
*);