* @(#)queue.h 8.5 (Berkeley) 8/20/94
*/
-#ifndef _SYS_QUEUE_H_
-#define _SYS_QUEUE_H_
-
-/*
- * This file defines five types of data structures: singly-linked lists,
- * lists, simple queues, tail queues, and circular queues.
- *
- *
- * A singly-linked list is headed by a single forward pointer. The elements
- * are singly linked for minimum space and pointer manipulation overhead at
- * the expense of O(n) removal for arbitrary elements. New elements can be
- * added to the list after an existing element or at the head of the list.
- * Elements being removed from the head of the list should use the explicit
- * macro for this purpose for optimum efficiency. A singly-linked list may
- * only be traversed in the forward direction. Singly-linked lists are ideal
- * for applications with large datasets and few or no removals or for
- * implementing a LIFO queue.
- *
- * A list is headed by a single forward pointer (or an array of forward
- * pointers for a hash table header). The elements are doubly linked
- * so that an arbitrary element can be removed without a need to
- * traverse the list. New elements can be added to the list before
- * or after an existing element or at the head of the list. A list
- * may only be traversed in the forward direction.
- *
- * A simple queue is headed by a pair of pointers, one the head of the
- * list and the other to the tail of the list. The elements are singly
- * linked to save space, so elements can only be removed from the
- * head of the list. New elements can be added to the list before or after
- * an existing element, at the head of the list, or at the end of the
- * list. A simple queue may only be traversed in the forward direction.
- *
- * A tail queue is headed by a pair of pointers, one to the head of the
- * list and the other to the tail of the list. The elements are doubly
- * linked so that an arbitrary element can be removed without a need to
- * traverse the list. New elements can be added to the list before or
- * after an existing element, at the head of the list, or at the end of
- * the list. A tail queue may be traversed in either direction.
- *
- * A circle queue is headed by a pair of pointers, one to the head of the
- * list and the other to the tail of the list. The elements are doubly
- * linked so that an arbitrary element can be removed without a need to
- * traverse the list. New elements can be added to the list before or after
- * an existing element, at the head of the list, or at the end of the list.
- * A circle queue may be traversed in either direction, but has a more
- * complex end of list detection.
- *
- * For details on the use of these macros, see the queue(3) manual page.
+// Disable clang-formatting as these implementations are copied from other
+// sources.
+//
+// clang-format off
+
+#ifndef SURICATA_QUEUE_H
+#define SURICATA_QUEUE_H
+
+/**
+ * This file started as a copy of sys/queue.h from OpenBSD and then had
+ * various changes made over time. Now we include the system sys/queue.h
+ * and then add missing behavior. On Windows this means we basically add
+ * everything. This allows for Suricata builds that integrate with other
+ * libraries that make use of sys/queue.h to use the exact same definitions
+ * from queue.h instead the Suricata copy.
*/
-#if defined(__clang_analyzer__) || defined(QUEUE_MACRO_DEBUG) || (defined(_KERNEL) && defined(DIAGNOSTIC))
-#define _Q_INVALIDATE(a) ((a) = ((void *)-1))
-#else
-#define _Q_INVALIDATE(a)
-#endif
+#include "autoconf.h"
-#if defined(__clang_analyzer__)
-#define _Q_ASSERT(a) assert((a))
-#else
-#define _Q_ASSERT(a)
+#ifdef HAVE_SYS_QUEUE_H
+#include <sys/queue.h>
#endif
-/*
- * Singly-linked List definitions.
- */
-
-/*
- * The following macros are not used and are in conflict with Win32 API
- */
-
-#if 0
-
-#define SLIST_HEAD(name, type) \
-struct name { \
- struct type *slh_first; /* first element */ \
-}
-
-#define SLIST_HEAD_INITIALIZER(head) \
- { NULL }
-
-#define SLIST_ENTRY(type) \
-struct { \
- struct type *sle_next; /* next element */ \
-}
-
-/*
- * Singly-linked List access methods.
- */
-#define SLIST_FIRST(head) ((head)->slh_first)
-#define SLIST_END(head) NULL
-#define SLIST_EMPTY(head) (SLIST_FIRST(head) == SLIST_END(head))
-#define SLIST_NEXT(elm, field) ((elm)->field.sle_next)
-
-#define SLIST_FOREACH(var, head, field) \
- for((var) = SLIST_FIRST(head); \
- (var) != SLIST_END(head); \
- (var) = SLIST_NEXT(var, field))
-
-#define SLIST_FOREACH_PREVPTR(var, varp, head, field) \
- for ((varp) = &SLIST_FIRST((head)); \
- ((var) = *(varp)) != SLIST_END(head); \
- (varp) = &SLIST_NEXT((var), field))
-
-/*
- * Singly-linked List functions.
- */
-#define SLIST_INIT(head) { \
- SLIST_FIRST(head) = SLIST_END(head); \
-}
-
-#define SLIST_INSERT_AFTER(slistelm, elm, field) do { \
- (elm)->field.sle_next = (slistelm)->field.sle_next; \
- (slistelm)->field.sle_next = (elm); \
-} while (0)
-
-#define SLIST_INSERT_HEAD(head, elm, field) do { \
- (elm)->field.sle_next = (head)->slh_first; \
- (head)->slh_first = (elm); \
-} while (0)
-
-#define SLIST_REMOVE_NEXT(head, elm, field) do { \
- (elm)->field.sle_next = (elm)->field.sle_next->field.sle_next; \
-} while (0)
-
-#define SLIST_REMOVE_HEAD(head, field) do { \
- (head)->slh_first = (head)->slh_first->field.sle_next; \
-} while (0)
-
-#define SLIST_REMOVE(head, elm, type, field) do { \
- if ((head)->slh_first == (elm)) { \
- SLIST_REMOVE_HEAD((head), field); \
- } else { \
- struct type *curelm = (head)->slh_first; \
- \
- while (curelm->field.sle_next != (elm)) \
- curelm = curelm->field.sle_next; \
- curelm->field.sle_next = \
- curelm->field.sle_next->field.sle_next; \
- _Q_INVALIDATE((elm)->field.sle_next); \
- } \
-} while (0)
-
-#endif /* 0 */
-
-/*
- * List definitions.
- */
-#define LIST_HEAD(name, type) \
-struct name { \
- struct type *lh_first; /* first element */ \
-}
-
-#define LIST_HEAD_INITIALIZER(head) \
- { NULL }
-
-#define LIST_ENTRY(type) \
-struct { \
- struct type *le_next; /* next element */ \
- struct type **le_prev; /* address of previous next element */ \
-}
-
-/*
- * List access methods
- */
-#define LIST_FIRST(head) ((head)->lh_first)
-#define LIST_END(head) NULL
-#define LIST_EMPTY(head) (LIST_FIRST(head) == LIST_END(head))
-#define LIST_NEXT(elm, field) ((elm)->field.le_next)
-
-#define LIST_FOREACH(var, head, field) \
- for((var) = LIST_FIRST(head); \
- (var)!= LIST_END(head); \
- (var) = LIST_NEXT(var, field))
-
-/*
- * List functions.
- */
-#define LIST_INIT(head) do { \
- LIST_FIRST(head) = LIST_END(head); \
-} while (0)
-
-#define LIST_INSERT_AFTER(listelm, elm, field) do { \
- if (((elm)->field.le_next = (listelm)->field.le_next) != NULL) \
- (listelm)->field.le_next->field.le_prev = \
- &(elm)->field.le_next; \
- (listelm)->field.le_next = (elm); \
- (elm)->field.le_prev = &(listelm)->field.le_next; \
-} while (0)
-
-#define LIST_INSERT_BEFORE(listelm, elm, field) do { \
- (elm)->field.le_prev = (listelm)->field.le_prev; \
- (elm)->field.le_next = (listelm); \
- *(listelm)->field.le_prev = (elm); \
- (listelm)->field.le_prev = &(elm)->field.le_next; \
-} while (0)
-
-#define LIST_INSERT_HEAD(head, elm, field) do { \
- if (((elm)->field.le_next = (head)->lh_first) != NULL) \
- (head)->lh_first->field.le_prev = &(elm)->field.le_next;\
- (head)->lh_first = (elm); \
- (elm)->field.le_prev = &(head)->lh_first; \
-} while (0)
-
-#define LIST_REMOVE(elm, field) do { \
- if ((elm)->field.le_next != NULL) \
- (elm)->field.le_next->field.le_prev = \
- (elm)->field.le_prev; \
- *(elm)->field.le_prev = (elm)->field.le_next; \
- _Q_INVALIDATE((elm)->field.le_prev); \
- _Q_INVALIDATE((elm)->field.le_next); \
-} while (0)
-
-#define LIST_REPLACE(elm, elm2, field) do { \
- if (((elm2)->field.le_next = (elm)->field.le_next) != NULL) \
- (elm2)->field.le_next->field.le_prev = \
- &(elm2)->field.le_next; \
- (elm2)->field.le_prev = (elm)->field.le_prev; \
- *(elm2)->field.le_prev = (elm2); \
- _Q_INVALIDATE((elm)->field.le_prev); \
- _Q_INVALIDATE((elm)->field.le_next); \
-} while (0)
-
-/*
- * Simple queue definitions.
- */
-#define SIMPLEQ_HEAD(name, type) \
-struct name { \
- struct type *sqh_first; /* first element */ \
- struct type **sqh_last; /* addr of last next element */ \
-}
-
-#define SIMPLEQ_HEAD_INITIALIZER(head) \
- { NULL, &(head).sqh_first }
-
-#define SIMPLEQ_ENTRY(type) \
-struct { \
- struct type *sqe_next; /* next element */ \
-}
-
-/*
- * Simple queue access methods.
- */
-#define SIMPLEQ_FIRST(head) ((head)->sqh_first)
-#define SIMPLEQ_END(head) NULL
-#define SIMPLEQ_EMPTY(head) (SIMPLEQ_FIRST(head) == SIMPLEQ_END(head))
-#define SIMPLEQ_NEXT(elm, field) ((elm)->field.sqe_next)
-
-#define SIMPLEQ_FOREACH(var, head, field) \
- for((var) = SIMPLEQ_FIRST(head); \
- (var) != SIMPLEQ_END(head); \
- (var) = SIMPLEQ_NEXT(var, field))
-
-/*
- * Simple queue functions.
- */
-#define SIMPLEQ_INIT(head) do { \
- (head)->sqh_first = NULL; \
- (head)->sqh_last = &(head)->sqh_first; \
-} while (0)
-
-#define SIMPLEQ_INSERT_HEAD(head, elm, field) do { \
- if (((elm)->field.sqe_next = (head)->sqh_first) == NULL) \
- (head)->sqh_last = &(elm)->field.sqe_next; \
- (head)->sqh_first = (elm); \
-} while (0)
-
-#define SIMPLEQ_INSERT_TAIL(head, elm, field) do { \
- (elm)->field.sqe_next = NULL; \
- *(head)->sqh_last = (elm); \
- (head)->sqh_last = &(elm)->field.sqe_next; \
-} while (0)
-
-#define SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
- if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
- (head)->sqh_last = &(elm)->field.sqe_next; \
- (listelm)->field.sqe_next = (elm); \
-} while (0)
-
-#define SIMPLEQ_REMOVE_HEAD(head, field) do { \
- if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
- (head)->sqh_last = &(head)->sqh_first; \
-} while (0)
-
-/*
- * Tail queue definitions.
- */
-#define TAILQ_HEAD(name, type) \
-struct name { \
- struct type *tqh_first; /* first element */ \
- struct type **tqh_last; /* addr of last next element */ \
-}
-
-#define TAILQ_HEAD_INITIALIZER(head) \
- { NULL, &(head).tqh_first }
-
-#define TAILQ_ENTRY(type) \
-struct { \
- struct type *tqe_next; /* next element */ \
- struct type **tqe_prev; /* address of previous next element */ \
-}
-
-/*
- * tail queue access methods
+/* Not included in Linux, but are in FreeBSD and friends.
+ *
+ * This implementation from FreeBSD's sys/queue.h.
*/
-#define TAILQ_FIRST(head) ((head)->tqh_first)
-#define TAILQ_END(head) NULL
-#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
-#define TAILQ_LAST(head, headname) \
- (*(((struct headname *)((head)->tqh_last))->tqh_last))
-/* XXX */
-#define TAILQ_PREV(elm, headname, field) \
- (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
-#define TAILQ_EMPTY(head) \
- (TAILQ_FIRST(head) == TAILQ_END(head))
-
-#define TAILQ_FOREACH(var, head, field) \
- for((var) = TAILQ_FIRST(head); \
- (var) != TAILQ_END(head); \
- (var) = TAILQ_NEXT(var, field))
-
-/* removal safe iterator using a temprary element has last param */
-#define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
- for((var) = TAILQ_FIRST(head), \
- (tvar) = TAILQ_FIRST(head) ? TAILQ_NEXT(TAILQ_FIRST(head), field): NULL ; \
- (var) != TAILQ_END(head); \
- (var = tvar), (tvar) = var ? TAILQ_NEXT(var, field): NULL)
-
-#define TAILQ_FOREACH_REVERSE(var, head, headname, field) \
- for((var) = TAILQ_LAST(head, headname); \
- (var) != TAILQ_END(head); \
- (var) = TAILQ_PREV(var, headname, field))
+#ifndef TAILQ_FOREACH_SAFE
+#define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
+ for ((var) = TAILQ_FIRST((head)); \
+ (var) && ((tvar) = TAILQ_NEXT((var), field), 1); \
+ (var) = (tvar))
+#endif
-/*
- * Tail queue functions.
+/* The BSDs have removed CIRCLEQ but it still exists in Linux.
+ *
+ * This implementation from OpenBSD sys/queue.h v1.40 as it still has
+ * CIRCLEQ and includes the safe variations.
+ * - _Q_INVALIDATE for some extra debugging has been removed as its
+ * not available on the Linux version of CIRCLEQ.
*/
-#define TAILQ_INIT(head) do { \
- (head)->tqh_first = NULL; \
- (head)->tqh_last = &(head)->tqh_first; \
-} while (0)
-#define TAILQ_INSERT_HEAD(head, elm, field) do { \
- if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \
- (head)->tqh_first->field.tqe_prev = \
- &(elm)->field.tqe_next; \
- else \
- (head)->tqh_last = &(elm)->field.tqe_next; \
- (head)->tqh_first = (elm); \
- (elm)->field.tqe_prev = &(head)->tqh_first; \
-} while (0)
-
-#define TAILQ_INSERT_TAIL(head, elm, field) do { \
- _Q_ASSERT((elm)); \
- _Q_ASSERT((head)); \
- (elm)->field.tqe_next = NULL; \
- (elm)->field.tqe_prev = (head)->tqh_last; \
- *(head)->tqh_last = (elm); \
- _Q_ASSERT(*(head)->tqh_last); \
- (head)->tqh_last = &(elm)->field.tqe_next; \
-} while (0)
-
-#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
- if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
- (elm)->field.tqe_next->field.tqe_prev = \
- &(elm)->field.tqe_next; \
- else \
- (head)->tqh_last = &(elm)->field.tqe_next; \
- (listelm)->field.tqe_next = (elm); \
- (elm)->field.tqe_prev = &(listelm)->field.tqe_next; \
-} while (0)
-
-#define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
- (elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
- (elm)->field.tqe_next = (listelm); \
- *(listelm)->field.tqe_prev = (elm); \
- (listelm)->field.tqe_prev = &(elm)->field.tqe_next; \
-} while (0)
-
-#define TAILQ_REMOVE(head, elm, field) do { \
- if (((elm)->field.tqe_next) != NULL) \
- (elm)->field.tqe_next->field.tqe_prev = \
- (elm)->field.tqe_prev; \
- else \
- (head)->tqh_last = (elm)->field.tqe_prev; \
- *(elm)->field.tqe_prev = (elm)->field.tqe_next; \
- _Q_ASSERT((head)->tqh_first != (elm)); \
- _Q_INVALIDATE((elm)->field.tqe_prev); \
- _Q_INVALIDATE((elm)->field.tqe_next); \
-} while (0)
-
-#define TAILQ_REPLACE(head, elm, elm2, field) do { \
- if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != NULL) \
- (elm2)->field.tqe_next->field.tqe_prev = \
- &(elm2)->field.tqe_next; \
- else \
- (head)->tqh_last = &(elm2)->field.tqe_next; \
- (elm2)->field.tqe_prev = (elm)->field.tqe_prev; \
- *(elm2)->field.tqe_prev = (elm2); \
- _Q_INVALIDATE((elm)->field.tqe_prev); \
- _Q_INVALIDATE((elm)->field.tqe_next); \
-} while (0)
+#ifndef CIRCLEQ_HEAD
/*
* Circular queue definitions.
*/
#define CIRCLEQ_FIRST(head) ((head)->cqh_first)
#define CIRCLEQ_LAST(head) ((head)->cqh_last)
-#define CIRCLEQ_END(head) ((void *)(head))
#define CIRCLEQ_NEXT(elm, field) ((elm)->field.cqe_next)
#define CIRCLEQ_PREV(elm, field) ((elm)->field.cqe_prev)
#define CIRCLEQ_EMPTY(head) \
(var) != CIRCLEQ_END(head); \
(var) = CIRCLEQ_NEXT(var, field))
+#define CIRCLEQ_FOREACH_SAFE(var, head, field, tvar) \
+ for ((var) = CIRCLEQ_FIRST(head); \
+ (var) != CIRCLEQ_END(head) && \
+ ((tvar) = CIRCLEQ_NEXT(var, field), 1); \
+ (var) = (tvar))
+
#define CIRCLEQ_FOREACH_REVERSE(var, head, field) \
for((var) = CIRCLEQ_LAST(head); \
(var) != CIRCLEQ_END(head); \
(var) = CIRCLEQ_PREV(var, field))
+#define CIRCLEQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \
+ for ((var) = CIRCLEQ_LAST(head, headname); \
+ (var) != CIRCLEQ_END(head) && \
+ ((tvar) = CIRCLEQ_PREV(var, headname, field), 1); \
+ (var) = (tvar))
+
/*
* Circular queue functions.
*/
else \
(elm)->field.cqe_prev->field.cqe_next = \
(elm)->field.cqe_next; \
- _Q_INVALIDATE((elm)->field.cqe_prev); \
- _Q_INVALIDATE((elm)->field.cqe_next); \
} while (0)
#define CIRCLEQ_REPLACE(head, elm, elm2, field) do { \
if (((elm2)->field.cqe_next = (elm)->field.cqe_next) == \
CIRCLEQ_END(head)) \
- (head).cqh_last = (elm2); \
+ (head)->cqh_last = (elm2); \
else \
(elm2)->field.cqe_next->field.cqe_prev = (elm2); \
if (((elm2)->field.cqe_prev = (elm)->field.cqe_prev) == \
CIRCLEQ_END(head)) \
- (head).cqh_first = (elm2); \
+ (head)->cqh_first = (elm2); \
else \
(elm2)->field.cqe_prev->field.cqe_next = (elm2); \
- _Q_INVALIDATE((elm)->field.cqe_prev); \
- _Q_INVALIDATE((elm)->field.cqe_next); \
} while (0)
+#endif /* !CIRCLEQ_HEAD */
+
+/* Required by local implementation as well as _SAFE variations. */
+#ifndef CIRCLEQ_END
+#define CIRCLEQ_END(head) ((void *)(head))
+#endif /* !CIRCLEQ_END */
+
+#ifndef CIRCLEQ_FOREACH_SAFE
#define CIRCLEQ_FOREACH_SAFE(var, head, field, tvar) \
- for ((var) = CIRCLEQ_FIRST(head); \
- (var) != CIRCLEQ_END(head) && \
- ((tvar) = CIRCLEQ_NEXT(var, field), 1); \
- (var) = (tvar))
+ for ((var) = CIRCLEQ_FIRST(head); \
+ (var) != CIRCLEQ_END(head) && \
+ ((tvar) = CIRCLEQ_NEXT(var, field), 1); \
+ (var) = (tvar))
#define CIRCLEQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \
- for ((var) = CIRCLEQ_LAST(head, headname); \
- (var) != CIRCLEQ_END(head) && \
- ((tvar) = CIRCLEQ_PREV(var, headname, field), 1); \
- (var) = (tvar))
+ for ((var) = CIRCLEQ_LAST(head, headname); \
+ (var) != CIRCLEQ_END(head) && \
+ ((tvar) = CIRCLEQ_PREV(var, headname, field), 1); \
+ (var) = (tvar))
+#endif /* !CIRCLEQ_FOREACH_SAFE */
+
+/*
+ * Complete TAILQ implementation as sys/queue.h is not available on Windows
+ * and used by Suricata.
+ *
+ * This implementation copied from FreeBSD sys/queue.h.
+ */
+#ifndef TAILQ_HEAD
+
+/*
+ * Tail queue declarations.
+ */
+#define TAILQ_HEAD(name, type) \
+struct name { \
+ struct type *tqh_first; /* first element */ \
+ struct type **tqh_last; /* addr of last next element */ \
+}
+
+#define TAILQ_HEAD_INITIALIZER(head) \
+ { NULL, &(head).tqh_first }
+
+#define TAILQ_ENTRY(type) \
+struct { \
+ struct type *tqe_next; /* next element */ \
+ struct type **tqe_prev; /* address of previous next element */ \
+}
+
+/*
+ * Tail queue functions.
+ */
+#define TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
+
+#define TAILQ_FIRST(head) ((head)->tqh_first)
+
+#define TAILQ_FOREACH(var, head, field) \
+ for ((var) = TAILQ_FIRST((head)); \
+ (var); \
+ (var) = TAILQ_NEXT((var), field))
+
+#define TAILQ_FOREACH_REVERSE(var, head, headname, field) \
+ for ((var) = TAILQ_LAST((head), headname); \
+ (var); \
+ (var) = TAILQ_PREV((var), headname, field))
+
+#define TAILQ_INIT(head) do { \
+ TAILQ_FIRST((head)) = NULL; \
+ (head)->tqh_last = &TAILQ_FIRST((head)); \
+} while (0)
+
+#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
+ if ((TAILQ_NEXT((elm), field) = TAILQ_NEXT((listelm), field)) != NULL)\
+ TAILQ_NEXT((elm), field)->field.tqe_prev = \
+ &TAILQ_NEXT((elm), field); \
+ else \
+ (head)->tqh_last = &TAILQ_NEXT((elm), field); \
+ TAILQ_NEXT((listelm), field) = (elm); \
+ (elm)->field.tqe_prev = &TAILQ_NEXT((listelm), field); \
+} while (0)
+
+#define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
+ (elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
+ TAILQ_NEXT((elm), field) = (listelm); \
+ *(listelm)->field.tqe_prev = (elm); \
+ (listelm)->field.tqe_prev = &TAILQ_NEXT((elm), field); \
+} while (0)
+
+#define TAILQ_INSERT_HEAD(head, elm, field) do { \
+ if ((TAILQ_NEXT((elm), field) = TAILQ_FIRST((head))) != NULL) \
+ TAILQ_FIRST((head))->field.tqe_prev = \
+ &TAILQ_NEXT((elm), field); \
+ else \
+ (head)->tqh_last = &TAILQ_NEXT((elm), field); \
+ TAILQ_FIRST((head)) = (elm); \
+ (elm)->field.tqe_prev = &TAILQ_FIRST((head)); \
+} while (0)
+
+#define TAILQ_INSERT_TAIL(head, elm, field) do { \
+ TAILQ_NEXT((elm), field) = NULL; \
+ (elm)->field.tqe_prev = (head)->tqh_last; \
+ *(head)->tqh_last = (elm); \
+ (head)->tqh_last = &TAILQ_NEXT((elm), field); \
+} while (0)
+
+#define TAILQ_LAST(head, headname) \
+ (*(((struct headname *)((head)->tqh_last))->tqh_last))
+
+#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
+
+#define TAILQ_PREV(elm, headname, field) \
+ (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
+
+#define TAILQ_REMOVE(head, elm, field) do { \
+ if ((TAILQ_NEXT((elm), field)) != NULL) \
+ TAILQ_NEXT((elm), field)->field.tqe_prev = \
+ (elm)->field.tqe_prev; \
+ else \
+ (head)->tqh_last = (elm)->field.tqe_prev; \
+ *(elm)->field.tqe_prev = TAILQ_NEXT((elm), field); \
+} while (0)
+
+#endif /* !TAILQ_HEAD */
-#endif /* !_SYS_QUEUE_H_ */
+#endif /* !SURICATA_QUEUE_H */
projects / thirdparty / suricata.git / commitdiff
