Andrew's git - gitweb.git/blob

   1#ifndef __COMMIT_REACH_H__
   2#define __COMMIT_REACH_H__
   3
   4#include "commit-slab.h"
   5
   6struct commit;
   7struct commit_list;
   8struct contains_cache;
   9struct ref_filter;
  10
  11struct commit_list *repo_get_merge_bases(struct repository *r,
  12                                         struct commit *rev1,
  13                                         struct commit *rev2);
  14struct commit_list *repo_get_merge_bases_many(struct repository *r,
  15                                              struct commit *one, int n,
  16                                              struct commit **twos);
  17/* To be used only when object flags after this call no longer matter */
  18struct commit_list *repo_get_merge_bases_many_dirty(struct repository *r,
  19                                                    struct commit *one, int n,
  20                                                    struct commit **twos);
  21#ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
  22#define get_merge_bases(r1, r2)           repo_get_merge_bases(the_repository, r1, r2)
  23#define get_merge_bases_many(one, n, two) repo_get_merge_bases_many(the_repository, one, n, two)
  24#define get_merge_bases_many_dirty(one, n, twos) repo_get_merge_bases_many_dirty(the_repository, one, n, twos)
  25#endif
  26
  27struct commit_list *get_octopus_merge_bases(struct commit_list *in);
  28
  29int is_descendant_of(struct commit *commit, struct commit_list *with_commit);
  30int in_merge_bases_many(struct commit *commit, int nr_reference, struct commit **reference);
  31int in_merge_bases(struct commit *commit, struct commit *reference);
  32
  33/*
  34 * Takes a list of commits and returns a new list where those
  35 * have been removed that can be reached from other commits in
  36 * the list. It is useful for, e.g., reducing the commits
  37 * randomly thrown at the git-merge command and removing
  38 * redundant commits that the user shouldn't have given to it.
  39 *
  40 * This function destroys the STALE bit of the commit objects'
  41 * flags.
  42 */
  43struct commit_list *reduce_heads(struct commit_list *heads);
  44
  45/*
  46 * Like `reduce_heads()`, except it replaces the list. Use this
  47 * instead of `foo = reduce_heads(foo);` to avoid memory leaks.
  48 */
  49void reduce_heads_replace(struct commit_list **heads);
  50
  51int ref_newer(const struct object_id *new_oid, const struct object_id *old_oid);
  52
  53/*
  54 * Unknown has to be "0" here, because that's the default value for
  55 * contains_cache slab entries that have not yet been assigned.
  56 */
  57enum contains_result {
  58        CONTAINS_UNKNOWN = 0,
  59        CONTAINS_NO,
  60        CONTAINS_YES
  61};
  62
  63define_commit_slab(contains_cache, enum contains_result);
  64
  65int commit_contains(struct ref_filter *filter, struct commit *commit,
  66                    struct commit_list *list, struct contains_cache *cache);
  67
  68/*
  69 * Determine if every commit in 'from' can reach at least one commit
  70 * that is marked with 'with_flag'. As we traverse, use 'assign_flag'
  71 * as a marker for commits that are already visited. Do not walk
  72 * commits with date below 'min_commit_date' or generation below
  73 * 'min_generation'.
  74 */
  75int can_all_from_reach_with_flag(struct object_array *from,
  76                                 unsigned int with_flag,
  77                                 unsigned int assign_flag,
  78                                 time_t min_commit_date,
  79                                 uint32_t min_generation);
  80int can_all_from_reach(struct commit_list *from, struct commit_list *to,
  81                       int commit_date_cutoff);
  82
  83#endif