diff options
Diffstat (limited to 'lib/queue.h')
| -rw-r--r-- | lib/queue.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/queue.h b/lib/queue.h index 04fbeee700..11e28b4c91 100644 --- a/lib/queue.h +++ b/lib/queue.h @@ -72,4 +72,17 @@ #include "freebsd-queue.h" #endif /* defined(__OpenBSD__) && !defined(STAILQ_HEAD) */ +#ifndef TAILQ_POP_FIRST +#define TAILQ_POP_FIRST(head, field) \ + ({ typeof((head)->tqh_first) _elm = TAILQ_FIRST(head); \ + if (_elm) { \ + if ((TAILQ_NEXT((_elm), field)) != NULL) \ + TAILQ_NEXT((_elm), field)->field.tqe_prev = \ + &TAILQ_FIRST(head); \ + else \ + (head)->tqh_last = &TAILQ_FIRST(head); \ + TAILQ_FIRST(head) = TAILQ_NEXT((_elm), field); \ + }; _elm; }) +#endif + #endif /* _FRR_QUEUE_H */ |