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 repository *r, 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 repository *r, struct commit *item);
  31
  32 struct tree *get_commit_tree_in_graph(struct repository *r,
  33                                       const struct commit *c);
  34
  35 struct commit_graph {
  36         int graph_fd;
  37
  38         const unsigned char *data;
  39         size_t data_len;
  40
  41         unsigned char hash_len;
  42         unsigned char num_chunks;
  43         uint32_t num_commits;
  44         struct object_id oid;
  45
  46         const uint32_t *chunk_oid_fanout;
  47         const unsigned char *chunk_oid_lookup;
  48         const unsigned char *chunk_commit_data;
  49         const unsigned char *chunk_large_edges;
  50 };
  51
  52 struct commit_graph *load_commit_graph_one(const char *graph_file);
  53
  54 void write_commit_graph_reachable(const char *obj_dir, int append);
  55 void write_commit_graph(const char *obj_dir,
  56                         struct string_list *pack_indexes,
  57                         struct string_list *commit_hex,
  58                         int append);
  59
  60 int verify_commit_graph(struct repository *r, struct commit_graph *g);
  61
  62 void free_commit_graph(struct commit_graph *);
  63
  64 #endif