commit-graph: release strbufs after use
[gitweb.git] / commit-reach.c
index a9da65c4625cbbeb165b0c2d54fe3edabb1a3a34..3ea174788a4f0229460bad65373e974cc3f87c64 100644 (file)
@@ -30,7 +30,8 @@ static int queue_has_nonstale(struct prio_queue *queue)
 }
 
 /* all input commits in one and twos[] must have been parsed! */
-static struct commit_list *paint_down_to_common(struct commit *one, int n,
+static struct commit_list *paint_down_to_common(struct repository *r,
+                                               struct commit *one, int n,
                                                struct commit **twos,
                                                int min_generation)
 {
@@ -83,7 +84,7 @@ static struct commit_list *paint_down_to_common(struct commit *one, int n,
                        parents = parents->next;
                        if ((p->object.flags & flags) == flags)
                                continue;
-                       if (parse_commit(p))
+                       if (repo_parse_commit(r, p))
                                return NULL;
                        p->object.flags |= flags;
                        prio_queue_put(&queue, p);
@@ -94,7 +95,9 @@ static struct commit_list *paint_down_to_common(struct commit *one, int n,
        return result;
 }
 
-static struct commit_list *merge_bases_many(struct commit *one, int n, struct commit **twos)
+static struct commit_list *merge_bases_many(struct repository *r,
+                                           struct commit *one, int n,
+                                           struct commit **twos)
 {
        struct commit_list *list = NULL;
        struct commit_list *result = NULL;
@@ -109,14 +112,14 @@ static struct commit_list *merge_bases_many(struct commit *one, int n, struct co
                        return commit_list_insert(one, &result);
        }
 
-       if (parse_commit(one))
+       if (repo_parse_commit(r, one))
                return NULL;
        for (i = 0; i < n; i++) {
-               if (parse_commit(twos[i]))
+               if (repo_parse_commit(r, twos[i]))
                        return NULL;
        }
 
-       list = paint_down_to_common(one, n, twos, 0);
+       list = paint_down_to_common(r, one, n, twos, 0);
 
        while (list) {
                struct commit *commit = pop_commit(&list);
@@ -153,7 +156,7 @@ struct commit_list *get_octopus_merge_bases(struct commit_list *in)
        return ret;
 }
 
-static int remove_redundant(struct commit **array, int cnt)
+static int remove_redundant(struct repository *r, struct commit **array, int cnt)
 {
        /*
         * Some commit in the array may be an ancestor of
@@ -171,7 +174,7 @@ static int remove_redundant(struct commit **array, int cnt)
        ALLOC_ARRAY(filled_index, cnt - 1);
 
        for (i = 0; i < cnt; i++)
-               parse_commit(array[i]);
+               repo_parse_commit(r, array[i]);
        for (i = 0; i < cnt; i++) {
                struct commit_list *common;
                uint32_t min_generation = array[i]->generation;
@@ -187,8 +190,8 @@ static int remove_redundant(struct commit **array, int cnt)
                        if (array[j]->generation < min_generation)
                                min_generation = array[j]->generation;
                }
-               common = paint_down_to_common(array[i], filled, work,
-                                             min_generation);
+               common = paint_down_to_common(r, array[i], filled,
+                                             work, min_generation);
                if (array[i]->object.flags & PARENT2)
                        redundant[i] = 1;
                for (j = 0; j < filled; j++)
@@ -213,7 +216,8 @@ static int remove_redundant(struct commit **array, int cnt)
        return filled;
 }
 
-static struct commit_list *get_merge_bases_many_0(struct commit *one,
+static struct commit_list *get_merge_bases_many_0(struct repository *r,
+                                                 struct commit *one,
                                                  int n,
                                                  struct commit **twos,
                                                  int cleanup)
@@ -223,7 +227,7 @@ static struct commit_list *get_merge_bases_many_0(struct commit *one,
        struct commit_list *result;
        int cnt, i;
 
-       result = merge_bases_many(one, n, twos);
+       result = merge_bases_many(r, one, n, twos);
        for (i = 0; i < n; i++) {
                if (one == twos[i])
                        return result;
@@ -246,7 +250,7 @@ static struct commit_list *get_merge_bases_many_0(struct commit *one,
        clear_commit_marks(one, all_flags);
        clear_commit_marks_many(n, twos, all_flags);
 
-       cnt = remove_redundant(rslt, cnt);
+       cnt = remove_redundant(r, rslt, cnt);
        result = NULL;
        for (i = 0; i < cnt; i++)
                commit_list_insert_by_date(rslt[i], &result);
@@ -254,23 +258,27 @@ static struct commit_list *get_merge_bases_many_0(struct commit *one,
        return result;
 }
 
-struct commit_list *get_merge_bases_many(struct commit *one,
-                                        int n,
-                                        struct commit **twos)
+struct commit_list *repo_get_merge_bases_many(struct repository *r,
+                                             struct commit *one,
+                                             int n,
+                                             struct commit **twos)
 {
-       return get_merge_bases_many_0(one, n, twos, 1);
+       return get_merge_bases_many_0(r, one, n, twos, 1);
 }
 
-struct commit_list *get_merge_bases_many_dirty(struct commit *one,
-                                              int n,
-                                              struct commit **twos)
+struct commit_list *repo_get_merge_bases_many_dirty(struct repository *r,
+                                                   struct commit *one,
+                                                   int n,
+                                                   struct commit **twos)
 {
-       return get_merge_bases_many_0(one, n, twos, 0);
+       return get_merge_bases_many_0(r, one, n, twos, 0);
 }
 
-struct commit_list *get_merge_bases(struct commit *one, struct commit *two)
+struct commit_list *repo_get_merge_bases(struct repository *r,
+                                        struct commit *one,
+                                        struct commit *two)
 {
-       return get_merge_bases_many_0(one, 1, &two, 1);
+       return get_merge_bases_many_0(r, one, 1, &two, 1);
 }
 
 /*
@@ -304,16 +312,17 @@ int is_descendant_of(struct commit *commit, struct commit_list *with_commit)
 /*
  * Is "commit" an ancestor of one of the "references"?
  */
-int in_merge_bases_many(struct commit *commit, int nr_reference, struct commit **reference)
+int repo_in_merge_bases_many(struct repository *r, struct commit *commit,
+                            int nr_reference, struct commit **reference)
 {
        struct commit_list *bases;
        int ret = 0, i;
        uint32_t min_generation = GENERATION_NUMBER_INFINITY;
 
-       if (parse_commit(commit))
+       if (repo_parse_commit(r, commit))
                return ret;
        for (i = 0; i < nr_reference; i++) {
-               if (parse_commit(reference[i]))
+               if (repo_parse_commit(r, reference[i]))
                        return ret;
                if (reference[i]->generation < min_generation)
                        min_generation = reference[i]->generation;
@@ -322,7 +331,9 @@ int in_merge_bases_many(struct commit *commit, int nr_reference, struct commit *
        if (commit->generation > min_generation)
                return ret;
 
-       bases = paint_down_to_common(commit, nr_reference, reference, commit->generation);
+       bases = paint_down_to_common(r, commit,
+                                    nr_reference, reference,
+                                    commit->generation);
        if (commit->object.flags & PARENT2)
                ret = 1;
        clear_commit_marks(commit, all_flags);
@@ -334,9 +345,11 @@ int in_merge_bases_many(struct commit *commit, int nr_reference, struct commit *
 /*
  * Is "commit" an ancestor of (i.e. reachable from) the "reference"?
  */
-int in_merge_bases(struct commit *commit, struct commit *reference)
+int repo_in_merge_bases(struct repository *r,
+                       struct commit *commit,
+                       struct commit *reference)
 {
-       return in_merge_bases_many(commit, 1, &reference);
+       return repo_in_merge_bases_many(r, commit, 1, &reference);
 }
 
 struct commit_list *reduce_heads(struct commit_list *heads)
@@ -365,7 +378,7 @@ struct commit_list *reduce_heads(struct commit_list *heads)
                        p->item->object.flags &= ~STALE;
                }
        }
-       num_head = remove_redundant(array, num_head);
+       num_head = remove_redundant(the_repository, array, num_head);
        for (i = 0; i < num_head; i++)
                tail = &commit_list_insert(array[i], tail)->next;
        free(array);
@@ -690,3 +703,72 @@ int can_all_from_reach(struct commit_list *from, struct commit_list *to,
        object_array_clear(&from_objs);
        return result;
 }
+
+struct commit_list *get_reachable_subset(struct commit **from, int nr_from,
+                                        struct commit **to, int nr_to,
+                                        unsigned int reachable_flag)
+{
+       struct commit **item;
+       struct commit *current;
+       struct commit_list *found_commits = NULL;
+       struct commit **to_last = to + nr_to;
+       struct commit **from_last = from + nr_from;
+       uint32_t min_generation = GENERATION_NUMBER_INFINITY;
+       int num_to_find = 0;
+
+       struct prio_queue queue = { compare_commits_by_gen_then_commit_date };
+
+       for (item = to; item < to_last; item++) {
+               struct commit *c = *item;
+
+               parse_commit(c);
+               if (c->generation < min_generation)
+                       min_generation = c->generation;
+
+               if (!(c->object.flags & PARENT1)) {
+                       c->object.flags |= PARENT1;
+                       num_to_find++;
+               }
+       }
+
+       for (item = from; item < from_last; item++) {
+               struct commit *c = *item;
+               if (!(c->object.flags & PARENT2)) {
+                       c->object.flags |= PARENT2;
+                       parse_commit(c);
+
+                       prio_queue_put(&queue, *item);
+               }
+       }
+
+       while (num_to_find && (current = prio_queue_get(&queue)) != NULL) {
+               struct commit_list *parents;
+
+               if (current->object.flags & PARENT1) {
+                       current->object.flags &= ~PARENT1;
+                       current->object.flags |= reachable_flag;
+                       commit_list_insert(current, &found_commits);
+                       num_to_find--;
+               }
+
+               for (parents = current->parents; parents; parents = parents->next) {
+                       struct commit *p = parents->item;
+
+                       parse_commit(p);
+
+                       if (p->generation < min_generation)
+                               continue;
+
+                       if (p->object.flags & PARENT2)
+                               continue;
+
+                       p->object.flags |= PARENT2;
+                       prio_queue_put(&queue, p);
+               }
+       }
+
+       clear_commit_marks_many(nr_to, to, PARENT1);
+       clear_commit_marks_many(nr_from, from, PARENT2);
+
+       return found_commits;
+}