Function process_parent

builtin/last-modified.c:286–342

}

static void process_parent(struct last_modified *lm,
			   struct prio_queue *queue,
			   struct commit *c, struct bitmap *active_c,
			   struct commit *parent, int parent_i)
{
	struct bitmap *active_p;

	repo_parse_commit(lm->rev.repo, parent);
	active_p = active_paths_for(lm, parent);

	/*
	 * The first time entering this function for this commit (i.e. first parent)
	 * see if Bloom filters will tell us it's worth to do the diff.
	 */
	if (parent_i || maybe_changed_path(lm, c, active_c)) {
		diff_tree_oid(&parent->object.oid,
			      &c->object.oid, "", &lm->rev.diffopt);
		diffcore_std(&lm->rev.diffopt);
	}

	/*
	 * Test each path for TREESAME-ness against the parent. If a path is
	 * TREESAME, pass it on to this parent.
	 *
	 * First, collect all paths that are *not* TREESAME in 'scratch'.
	 * Then, pass paths that *are* TREESAME and active to the parent.
	 */
	for (int i = 0; i < diff_queued_diff.nr; i++) {
		struct diff_filepair *fp = diff_queued_diff.queue[i];
		const char *path = fp->two->path;
		struct last_modified_entry *ent =
			hashmap_get_entry_from_hash(&lm->paths, strhash(path), path,
						    struct last_modified_entry, hashent);
		if (ent) {
			size_t k = ent->diff_idx;
			if (bitmap_get(active_c, k))
				bitmap_set(lm->scratch, k);
		}
	}
	for (size_t i = 0; i < lm->all_paths_nr; i++) {
		if (bitmap_get(active_c, i) && !bitmap_get(lm->scratch, i))
			pass_to_parent(active_c, active_p, i);
	}

	/*
	 * If parent has any active paths, put it on the queue (if not already).
	 */
	if (!bitmap_is_empty(active_p) && !(parent->object.flags & PARENT1)) {
		parent->object.flags |= PARENT1;
		prio_queue_put(queue, parent);
	}
	if (!(parent->object.flags & PARENT1))
		active_paths_free(lm, parent);

	MEMZERO_ARRAY(lm->scratch->words, lm->scratch->word_alloc);
	diff_queue_clear(&diff_queued_diff);
}