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 char *get_commit_graph_chain_filename(struct object_directory
*odb
);
29 int open_commit_graph(const char *graph_file
, int *fd
, struct stat
*st
);
32 * Given a commit struct, try to fill the commit struct info, including:
37 * Returns 1 if and only if the commit was found in the packed graph.
39 * See parse_commit_buffer() for the fallback after this call.
41 int parse_commit_in_graph(struct repository
*r
, struct commit
*item
);
44 * It is possible that we loaded commit contents from the commit buffer,
45 * but we also want to ensure the commit-graph content is correctly
46 * checked and filled. Fill the graph_pos and generation members of
49 void load_commit_graph_info(struct repository
*r
, struct commit
*item
);
51 struct tree
*get_commit_tree_in_graph(struct repository
*r
,
52 const struct commit
*c
);
55 const unsigned char *data
;
58 unsigned char hash_len
;
59 unsigned char num_chunks
;
63 struct object_directory
*odb
;
65 uint32_t num_commits_in_base
;
66 struct commit_graph
*base_graph
;
68 const uint32_t *chunk_oid_fanout
;
69 const unsigned char *chunk_oid_lookup
;
70 const unsigned char *chunk_commit_data
;
71 const unsigned char *chunk_extra_edges
;
72 const unsigned char *chunk_base_graphs
;
73 const unsigned char *chunk_bloom_indexes
;
74 const unsigned char *chunk_bloom_data
;
76 struct bloom_filter_settings
*bloom_filter_settings
;
79 struct commit_graph
*load_commit_graph_one_fd_st(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(void *graph_map
, size_t graph_size
);
86 * Return 1 if and only if the repository has a commit-graph
87 * file and generation numbers are computed in that file.
89 int generation_numbers_enabled(struct repository
*r
);
91 enum commit_graph_write_flags
{
92 COMMIT_GRAPH_WRITE_APPEND
= (1 << 0),
93 COMMIT_GRAPH_WRITE_PROGRESS
= (1 << 1),
94 COMMIT_GRAPH_WRITE_SPLIT
= (1 << 2),
95 COMMIT_GRAPH_WRITE_BLOOM_FILTERS
= (1 << 3),
96 COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS
= (1 << 4),
99 enum commit_graph_split_flags
{
100 COMMIT_GRAPH_SPLIT_UNSPECIFIED
= 0,
101 COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED
= 1,
102 COMMIT_GRAPH_SPLIT_REPLACE
= 2
105 struct split_commit_graph_opts
{
108 timestamp_t expire_time
;
109 enum commit_graph_split_flags flags
;
113 * The write_commit_graph* methods return zero on success
114 * and a negative value on failure. Note that if the repository
115 * is not compatible with the commit-graph feature, then the
116 * methods will return 0 without writing a commit-graph.
118 int write_commit_graph_reachable(struct object_directory
*odb
,
119 enum commit_graph_write_flags flags
,
120 const struct split_commit_graph_opts
*split_opts
);
121 int write_commit_graph(struct object_directory
*odb
,
122 struct string_list
*pack_indexes
,
123 struct oidset
*commits
,
124 enum commit_graph_write_flags flags
,
125 const struct split_commit_graph_opts
*split_opts
);
127 #define COMMIT_GRAPH_VERIFY_SHALLOW (1 << 0)
129 int verify_commit_graph(struct repository
*r
, struct commit_graph
*g
, int flags
);
131 void close_commit_graph(struct raw_object_store
*);
132 void free_commit_graph(struct commit_graph
*);
135 * Disable further use of the commit graph in this process when parsing a
138 void disable_commit_graph(struct repository
*r
);
140 struct commit_graph_data
{
146 * Commits should be parsed before accessing generation, graph positions.
148 uint32_t commit_graph_generation(const struct commit
*);
149 uint32_t commit_graph_position(const struct commit
*);