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authorJunio C Hamano <gitster@pobox.com>2014-07-27 15:14:14 -0700
committerJunio C Hamano <gitster@pobox.com>2014-07-27 15:14:15 -0700
commit4799593e26f09e4209249caf9536001036618ac2 (patch)
treefba851e4ab180d0b9ef8055d7c4ebda42034c402 /commit.c
parent996b0fdbb4ff63bfd880b3901f054139c95611cf (diff)
parentf0e802ca200b1296495d2ee5c55cd8f8083486bc (diff)
downloadgit-4799593e26f09e4209249caf9536001036618ac2.tar.gz
Merge branch 'jk/stable-prio-queue'
* jk/stable-prio-queue: t5539: update a flaky test paint_down_to_common: use prio_queue prio-queue: make output stable with respect to insertion prio-queue: factor out compare and swap operations
Diffstat (limited to 'commit.c')
-rw-r--r--commit.c42
1 files changed, 19 insertions, 23 deletions
diff --git a/commit.c b/commit.c
index dce3d69dfd..2274e43fdf 100644
--- a/commit.c
+++ b/commit.c
@@ -764,45 +764,41 @@ void sort_in_topological_order(struct commit_list **list, enum rev_sort_order so
static const unsigned all_flags = (PARENT1 | PARENT2 | STALE | RESULT);
-static struct commit *interesting(struct commit_list *list)
+static int queue_has_nonstale(struct prio_queue *queue)
{
- while (list) {
- struct commit *commit = list->item;
- list = list->next;
- if (commit->object.flags & STALE)
- continue;
- return commit;
+ int i;
+ for (i = 0; i < queue->nr; i++) {
+ struct commit *commit = queue->array[i].data;
+ if (!(commit->object.flags & STALE))
+ return 1;
}
- return NULL;
+ return 0;
}
/* all input commits in one and twos[] must have been parsed! */
static struct commit_list *paint_down_to_common(struct commit *one, int n, struct commit **twos)
{
- struct commit_list *list = NULL;
+ struct prio_queue queue = { compare_commits_by_commit_date };
struct commit_list *result = NULL;
int i;
one->object.flags |= PARENT1;
- commit_list_insert_by_date(one, &list);
- if (!n)
- return list;
+ if (!n) {
+ commit_list_append(one, &result);
+ return result;
+ }
+ prio_queue_put(&queue, one);
+
for (i = 0; i < n; i++) {
twos[i]->object.flags |= PARENT2;
- commit_list_insert_by_date(twos[i], &list);
+ prio_queue_put(&queue, twos[i]);
}
- while (interesting(list)) {
- struct commit *commit;
+ while (queue_has_nonstale(&queue)) {
+ struct commit *commit = prio_queue_get(&queue);
struct commit_list *parents;
- struct commit_list *next;
int flags;
- commit = list->item;
- next = list->next;
- free(list);
- list = next;
-
flags = commit->object.flags & (PARENT1 | PARENT2 | STALE);
if (flags == (PARENT1 | PARENT2)) {
if (!(commit->object.flags & RESULT)) {
@@ -821,11 +817,11 @@ static struct commit_list *paint_down_to_common(struct commit *one, int n, struc
if (parse_commit(p))
return NULL;
p->object.flags |= flags;
- commit_list_insert_by_date(p, &list);
+ prio_queue_put(&queue, p);
}
}
- free_commit_list(list);
+ clear_prio_queue(&queue);
return result;
}