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0009d350 RJ |
1 | #ifndef COMMIT_REACH_H |
2 | #define COMMIT_REACH_H | |
5227c385 | 3 | |
1406725b | 4 | #include "commit.h" |
920f93ca DS |
5 | #include "commit-slab.h" |
6 | ||
5227c385 | 7 | struct commit_list; |
920f93ca | 8 | struct ref_filter; |
1406725b RJ |
9 | struct object_id; |
10 | struct object_array; | |
5227c385 DS |
11 | |
12 | struct commit_list *get_merge_bases_many(struct commit *one, | |
13 | int n, | |
14 | struct commit **twos); | |
15 | struct commit_list *get_merge_bases_many_dirty(struct commit *one, | |
16 | int n, | |
17 | struct commit **twos); | |
18 | struct commit_list *get_merge_bases(struct commit *one, struct commit *two); | |
19 | struct commit_list *get_octopus_merge_bases(struct commit_list *in); | |
20 | ||
21 | /* To be used only when object flags after this call no longer matter */ | |
22 | struct commit_list *get_merge_bases_many_dirty(struct commit *one, int n, struct commit **twos); | |
23 | ||
24 | int is_descendant_of(struct commit *commit, struct commit_list *with_commit); | |
25 | int in_merge_bases_many(struct commit *commit, int nr_reference, struct commit **reference); | |
26 | int in_merge_bases(struct commit *commit, struct commit *reference); | |
27 | ||
5227c385 DS |
28 | /* |
29 | * Takes a list of commits and returns a new list where those | |
30 | * have been removed that can be reached from other commits in | |
31 | * the list. It is useful for, e.g., reducing the commits | |
32 | * randomly thrown at the git-merge command and removing | |
33 | * redundant commits that the user shouldn't have given to it. | |
34 | * | |
35 | * This function destroys the STALE bit of the commit objects' | |
36 | * flags. | |
37 | */ | |
38 | struct commit_list *reduce_heads(struct commit_list *heads); | |
39 | ||
40 | /* | |
41 | * Like `reduce_heads()`, except it replaces the list. Use this | |
42 | * instead of `foo = reduce_heads(foo);` to avoid memory leaks. | |
43 | */ | |
44 | void reduce_heads_replace(struct commit_list **heads); | |
45 | ||
1d614d41 DS |
46 | int ref_newer(const struct object_id *new_oid, const struct object_id *old_oid); |
47 | ||
920f93ca DS |
48 | /* |
49 | * Unknown has to be "0" here, because that's the default value for | |
50 | * contains_cache slab entries that have not yet been assigned. | |
51 | */ | |
52 | enum contains_result { | |
53 | CONTAINS_UNKNOWN = 0, | |
54 | CONTAINS_NO, | |
55 | CONTAINS_YES | |
56 | }; | |
57 | ||
58 | define_commit_slab(contains_cache, enum contains_result); | |
59 | ||
60 | int commit_contains(struct ref_filter *filter, struct commit *commit, | |
61 | struct commit_list *list, struct contains_cache *cache); | |
62 | ||
ba3ca1ed DS |
63 | /* |
64 | * Determine if every commit in 'from' can reach at least one commit | |
65 | * that is marked with 'with_flag'. As we traverse, use 'assign_flag' | |
66 | * as a marker for commits that are already visited. Do not walk | |
4fbcca4e DS |
67 | * commits with date below 'min_commit_date' or generation below |
68 | * 'min_generation'. | |
ba3ca1ed DS |
69 | */ |
70 | int can_all_from_reach_with_flag(struct object_array *from, | |
71 | unsigned int with_flag, | |
72 | unsigned int assign_flag, | |
4fbcca4e DS |
73 | time_t min_commit_date, |
74 | uint32_t min_generation); | |
1792bc12 DS |
75 | int can_all_from_reach(struct commit_list *from, struct commit_list *to, |
76 | int commit_date_cutoff); | |
ba3ca1ed | 77 | |
fcb2c076 DS |
78 | |
79 | /* | |
80 | * Return a list of commits containing the commits in the 'to' array | |
81 | * that are reachable from at least one commit in the 'from' array. | |
82 | * Also add the given 'flag' to each of the commits in the returned list. | |
83 | * | |
84 | * This method uses the PARENT1 and PARENT2 flags during its operation, | |
85 | * so be sure these flags are not set before calling the method. | |
86 | */ | |
87 | struct commit_list *get_reachable_subset(struct commit **from, int nr_from, | |
88 | struct commit **to, int nr_to, | |
89 | unsigned int reachable_flag); | |
90 | ||
5227c385 | 91 | #endif |