Function mark_common

negotiator/default.c:57–103

* This function marks a rev and its ancestors as common. * In some cases, it is desirable to mark only the ancestors (for example * when only the server does not yet know that they are common). */

 * when only the server does not yet know that they are common).
 */
static void mark_common(struct negotiation_state *ns, struct commit *commit,
		int ancestors_only, int dont_parse)
{
	struct commit_stack stack = COMMIT_STACK_INIT;

	if (!commit || (commit->object.flags & COMMON))
		return;

	commit_stack_push(&stack, commit);
	if (!ancestors_only) {
		commit->object.flags |= COMMON;

		if ((commit->object.flags & SEEN) && !(commit->object.flags & POPPED))
			ns->non_common_revs--;
	}
	while ((commit = commit_stack_pop(&stack))) {
		struct object *o = (struct object *)commit;

		if (!(o->flags & SEEN))
			rev_list_push(ns, commit, SEEN);
		else {
			struct commit_list *parents;

			if (!o->parsed && !dont_parse)
				if (repo_parse_commit(the_repository, commit))
					continue;

			for (parents = commit->parents;
					parents;
					parents = parents->next) {
				struct commit *p = parents->item;

				if (p->object.flags & COMMON)
					continue;

				p->object.flags |= COMMON;

				if ((p->object.flags & SEEN) && !(p->object.flags & POPPED))
					ns->non_common_revs--;

				commit_stack_push(&stack, parents->item);
			}
		}
	}

	commit_stack_clear(&stack);
}

/*
 * Get the next rev to send, ignoring the common.