dir.h: move DTYPE defines from cache.h
[git.git] / commit-reach.h
blob94a96e032991c6d03c3517caf9fbc6c7dd96801c
1 #ifndef COMMIT_REACH_H
2 #define COMMIT_REACH_H
4 #include "commit.h"
5 #include "commit-slab.h"
7 struct commit_list;
8 struct ref_filter;
9 struct object_id;
10 struct object_array;
12 struct commit_list *repo_get_merge_bases(struct repository *r,
13 struct commit *rev1,
14 struct commit *rev2);
15 struct commit_list *repo_get_merge_bases_many(struct repository *r,
16 struct commit *one, int n,
17 struct commit **twos);
18 /* To be used only when object flags after this call no longer matter */
19 struct commit_list *repo_get_merge_bases_many_dirty(struct repository *r,
20 struct commit *one, int n,
21 struct commit **twos);
23 struct commit_list *get_octopus_merge_bases(struct commit_list *in);
25 int repo_is_descendant_of(struct repository *r,
26 struct commit *commit,
27 struct commit_list *with_commit);
28 int repo_in_merge_bases(struct repository *r,
29 struct commit *commit,
30 struct commit *reference);
31 int repo_in_merge_bases_many(struct repository *r,
32 struct commit *commit,
33 int nr_reference, struct commit **reference);
36 * Takes a list of commits and returns a new list where those
37 * have been removed that can be reached from other commits in
38 * the list. It is useful for, e.g., reducing the commits
39 * randomly thrown at the git-merge command and removing
40 * redundant commits that the user shouldn't have given to it.
42 * This function destroys the STALE bit of the commit objects'
43 * flags.
45 struct commit_list *reduce_heads(struct commit_list *heads);
48 * Like `reduce_heads()`, except it replaces the list. Use this
49 * instead of `foo = reduce_heads(foo);` to avoid memory leaks.
51 void reduce_heads_replace(struct commit_list **heads);
53 int ref_newer(const struct object_id *new_oid, const struct object_id *old_oid);
56 * Unknown has to be "0" here, because that's the default value for
57 * contains_cache slab entries that have not yet been assigned.
59 enum contains_result {
60 CONTAINS_UNKNOWN = 0,
61 CONTAINS_NO,
62 CONTAINS_YES
65 define_commit_slab(contains_cache, enum contains_result);
67 int commit_contains(struct ref_filter *filter, struct commit *commit,
68 struct commit_list *list, struct contains_cache *cache);
71 * Determine if every commit in 'from' can reach at least one commit
72 * that is marked with 'with_flag'. As we traverse, use 'assign_flag'
73 * as a marker for commits that are already visited. Do not walk
74 * commits with date below 'min_commit_date' or generation below
75 * 'min_generation'.
77 int can_all_from_reach_with_flag(struct object_array *from,
78 unsigned int with_flag,
79 unsigned int assign_flag,
80 time_t min_commit_date,
81 timestamp_t min_generation);
82 int can_all_from_reach(struct commit_list *from, struct commit_list *to,
83 int commit_date_cutoff);
87 * Return a list of commits containing the commits in the 'to' array
88 * that are reachable from at least one commit in the 'from' array.
89 * Also add the given 'flag' to each of the commits in the returned list.
91 * This method uses the PARENT1 and PARENT2 flags during its operation,
92 * so be sure these flags are not set before calling the method.
94 struct commit_list *get_reachable_subset(struct commit **from, int nr_from,
95 struct commit **to, int nr_to,
96 unsigned int reachable_flag);
98 #endif