Add operations to qlist to allow it to be used as a stack

This makes lists no longer invariant. It's a very useful bit of functionality
though.

To deal with the fact that lists are no longer invariant, introduce a deep
copy mechanism for lists.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/qlist.h b/qlist.h
index 3eb1eb83b2..afdc4465bf 100644
--- a/qlist.h
+++ b/qlist.h
@@ -30,9 +30,13 @@ typedef struct QList {
         qlist_append_obj(qlist, QOBJECT(obj))
 
 QList *qlist_new(void);
+QList *qlist_copy(QList *src);
 void qlist_append_obj(QList *qlist, QObject *obj);
 void qlist_iter(const QList *qlist,
                 void (*iter)(QObject *obj, void *opaque), void *opaque);
+QObject *qlist_pop(QList *qlist);
+QObject *qlist_peek(QList *qlist);
+int qlist_empty(const QList *qlist);
 QList *qobject_to_qlist(const QObject *obj);
 
 #endif /* QLIST_H */