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pqueue: support not having a comparison function

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In this case, we simply behave like a vector.
This commit is contained in:
Carlos Martín Nieto 2016-09-23 13:25:35 +02:00
parent 0bd43371c2
commit 938f8e32ec
1 changed files with 9 additions and 3 deletions
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12
src/pqueue.c
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@ -93,7 +93,7 @@ int git_pqueue_insert(git_pqueue *pq, void *item)
(void)git_pqueue_pop(pq);
}
if (!(error = git_vector_insert(pq, item)))
if (!(error = git_vector_insert(pq, item)) && pq->_cmp)
pqueue_up(pq, pq->length - 1);
return error;
@ -101,9 +101,15 @@ int git_pqueue_insert(git_pqueue *pq, void *item)
void *git_pqueue_pop(git_pqueue *pq)
{
void *rval = git_pqueue_get(pq, 0);
void *rval;
if (git_pqueue_size(pq) > 1) {
if (!pq->_cmp) {
rval = git_vector_last(pq);
} else {
rval = git_pqueue_get(pq, 0);
}
if (git_pqueue_size(pq) > 1 && pq->_cmp) {
/* move last item to top of heap, shrink, and push item down */
pq->contents[0] = git_vector_last(pq);
git_vector_pop(pq);