diff options
Diffstat (limited to 'include/qemu/queue.h')
| -rw-r--r-- | include/qemu/queue.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/qemu/queue.h b/include/qemu/queue.h index 4764d93ea3..4d4554a7ce 100644 --- a/include/qemu/queue.h +++ b/include/qemu/queue.h @@ -501,4 +501,43 @@ union { \ QTAILQ_RAW_TQH_CIRC(head)->tql_prev = QTAILQ_RAW_TQE_CIRC(elm, entry); \ } while (/*CONSTCOND*/0) +#define QLIST_RAW_FIRST(head) \ + field_at_offset(head, 0, void *) + +#define QLIST_RAW_NEXT(elm, entry) \ + field_at_offset(elm, entry, void *) + +#define QLIST_RAW_PREVIOUS(elm, entry) \ + field_at_offset(elm, entry + sizeof(void *), void *) + +#define QLIST_RAW_FOREACH(elm, head, entry) \ + for ((elm) = *QLIST_RAW_FIRST(head); \ + (elm); \ + (elm) = *QLIST_RAW_NEXT(elm, entry)) + +#define QLIST_RAW_INSERT_HEAD(head, elm, entry) do { \ + void *first = *QLIST_RAW_FIRST(head); \ + *QLIST_RAW_FIRST(head) = elm; \ + *QLIST_RAW_PREVIOUS(elm, entry) = QLIST_RAW_FIRST(head); \ + if (first) { \ + *QLIST_RAW_NEXT(elm, entry) = first; \ + *QLIST_RAW_PREVIOUS(first, entry) = QLIST_RAW_NEXT(elm, entry); \ + } else { \ + *QLIST_RAW_NEXT(elm, entry) = NULL; \ + } \ +} while (0) + +#define QLIST_RAW_REVERSE(head, elm, entry) do { \ + void *iter = *QLIST_RAW_FIRST(head), *prev = NULL, *next; \ + while (iter) { \ + next = *QLIST_RAW_NEXT(iter, entry); \ + *QLIST_RAW_PREVIOUS(iter, entry) = QLIST_RAW_NEXT(next, entry); \ + *QLIST_RAW_NEXT(iter, entry) = prev; \ + prev = iter; \ + iter = next; \ + } \ + *QLIST_RAW_FIRST(head) = prev; \ + *QLIST_RAW_PREVIOUS(prev, entry) = QLIST_RAW_FIRST(head); \ +} while (0) + #endif /* QEMU_SYS_QUEUE_H */ |