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
   8 struct commit;
   9
  10 char *get_commit_graph_filename(const char *obj_dir);
  11
  12 /*
  13  * Given a commit struct, try to fill the commit struct info, including:
  14  *  1. tree object
  15  *  2. date
  16  *  3. parents.
  17  *
  18  * Returns 1 if and only if the commit was found in the packed graph.
  19  *
  20  * See parse_commit_buffer() for the fallback after this call.
  21  */
  22 int parse_commit_in_graph(struct commit *item);
  23
  24 /*
  25  * It is possible that we loaded commit contents from the commit buffer,
  26  * but we also want to ensure the commit-graph content is correctly
  27  * checked and filled. Fill the graph_pos and generation members of
  28  * the given commit.
  29  */
  30 void load_commit_graph_info(struct commit *item);
  31
  32 struct tree *get_commit_tree_in_graph(const struct commit *c);
  33
  34 struct commit_graph {
  35         int graph_fd;
  36
  37         const unsigned char *data;
  38         size_t data_len;
  39
  40         unsigned char hash_len;
  41         unsigned char num_chunks;
  42         uint32_t num_commits;
  43         struct object_id oid;
  44
  45         const uint32_t *chunk_oid_fanout;
  46         const unsigned char *chunk_oid_lookup;
  47         const unsigned char *chunk_commit_data;
  48         const unsigned char *chunk_large_edges;
  49 };
  50
  51 struct commit_graph *load_commit_graph_one(const char *graph_file);
  52
  53 void write_commit_graph_reachable(const char *obj_dir, int append);
  54 void write_commit_graph(const char *obj_dir,
  55                         struct string_list *pack_indexes,
  56                         struct string_list *commit_hex,
  57                         int append);
  58
  59 int verify_commit_graph(struct repository *r, struct commit_graph *g);
  60
  61 void free_commit_graph(struct commit_graph *);
  62
  63 #endif