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_NO_GDAT "GIT_TEST_COMMIT_GRAPH_NO_GDAT"
10 #define GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE "GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE"
11 #define GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS "GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS"
14 * This method is only used to enhance coverage of the commit-graph
15 * feature in the test suite with the GIT_TEST_COMMIT_GRAPH and
16 * GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS environment variables. Do not
17 * call this method oustide of a builtin, and only if you know what
20 void git_test_write_commit_graph_or_die(void);
23 struct bloom_filter_settings;
25 struct raw_object_store;
28 char *get_commit_graph_filename(struct object_directory *odb);
29 char *get_commit_graph_chain_filename(struct object_directory *odb);
30 int open_commit_graph(const char *graph_file, int *fd, struct stat *st);
33 * Given a commit struct, try to fill the commit struct info, including:
38 * Returns 1 if and only if the commit was found in the packed graph.
40 * See parse_commit_buffer() for the fallback after this call.
42 int parse_commit_in_graph(struct repository *r, struct commit *item);
45 * It is possible that we loaded commit contents from the commit buffer,
46 * but we also want to ensure the commit-graph content is correctly
47 * checked and filled. Fill the graph_pos and generation members of
50 void load_commit_graph_info(struct repository *r, struct commit *item);
52 struct tree *get_commit_tree_in_graph(struct repository *r,
53 const struct commit *c);
56 const unsigned char *data;
59 unsigned char hash_len;
60 unsigned char num_chunks;
64 struct object_directory *odb;
66 uint32_t num_commits_in_base;
67 unsigned int read_generation_data;
68 struct commit_graph *base_graph;
70 const uint32_t *chunk_oid_fanout;
71 const unsigned char *chunk_oid_lookup;
72 const unsigned char *chunk_commit_data;
73 const unsigned char *chunk_generation_data;
74 const unsigned char *chunk_generation_data_overflow;
75 const unsigned char *chunk_extra_edges;
76 const unsigned char *chunk_base_graphs;
77 const unsigned char *chunk_bloom_indexes;
78 const unsigned char *chunk_bloom_data;
80 struct topo_level_slab *topo_levels;
81 struct bloom_filter_settings *bloom_filter_settings;
84 struct commit_graph *load_commit_graph_one_fd_st(struct repository *r,
85 int fd, struct stat *st,
86 struct object_directory *odb);
87 struct commit_graph *read_commit_graph_one(struct repository *r,
88 struct object_directory *odb);
89 struct commit_graph *parse_commit_graph(struct repository *r,
90 void *graph_map, size_t graph_size);
93 * Return 1 if and only if the repository has a commit-graph
94 * file and generation numbers are computed in that file.
96 int generation_numbers_enabled(struct repository *r);
99 * Return 1 if and only if the repository has a commit-graph
100 * file and generation data chunk has been written for the file.
102 int corrected_commit_dates_enabled(struct repository *r);
104 struct bloom_filter_settings *get_bloom_filter_settings(struct repository *r);
106 enum commit_graph_write_flags {
107 COMMIT_GRAPH_WRITE_APPEND = (1 << 0),
108 COMMIT_GRAPH_WRITE_PROGRESS = (1 << 1),
109 COMMIT_GRAPH_WRITE_SPLIT = (1 << 2),
110 COMMIT_GRAPH_WRITE_BLOOM_FILTERS = (1 << 3),
111 COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS = (1 << 4),
114 enum commit_graph_split_flags {
115 COMMIT_GRAPH_SPLIT_UNSPECIFIED = 0,
116 COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED = 1,
117 COMMIT_GRAPH_SPLIT_REPLACE = 2
120 struct commit_graph_opts {
123 timestamp_t expire_time;
124 enum commit_graph_split_flags split_flags;
129 * The write_commit_graph* methods return zero on success
130 * and a negative value on failure. Note that if the repository
131 * is not compatible with the commit-graph feature, then the
132 * methods will return 0 without writing a commit-graph.
134 int write_commit_graph_reachable(struct object_directory *odb,
135 enum commit_graph_write_flags flags,
136 const struct commit_graph_opts *opts);
137 int write_commit_graph(struct object_directory *odb,
138 struct string_list *pack_indexes,
139 struct oidset *commits,
140 enum commit_graph_write_flags flags,
141 const struct commit_graph_opts *opts);
143 #define COMMIT_GRAPH_VERIFY_SHALLOW (1 << 0)
145 int verify_commit_graph(struct repository *r, struct commit_graph *g, int flags);
147 void close_commit_graph(struct raw_object_store *);
148 void free_commit_graph(struct commit_graph *);
151 * Disable further use of the commit graph in this process when parsing a
154 void disable_commit_graph(struct repository *r);
156 struct commit_graph_data {
158 timestamp_t generation;
162 * Commits should be parsed before accessing generation, graph positions.
164 timestamp_t commit_graph_generation(const struct commit *);
165 uint32_t commit_graph_position(const struct commit *);