+/* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
+ * Junior University
+ *
+ * We are making the OpenFlow specification and associated documentation
+ * (Software) available for public use and benefit with the expectation
+ * that others will use, modify and enhance the Software and contribute
+ * those enhancements back to the community. However, since we would
+ * like to make the Software available for broadest use, with as few
+ * restrictions as possible permission is hereby granted, free of
+ * charge, to any person obtaining a copy of this Software to deal in
+ * the Software under the copyrights without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * The name and trademarks of copyright holder(s) may NOT be used in
+ * advertising or publicity pertaining to the Software or any
+ * derivatives without specific, written prior permission.
+ */
#ifndef LIST_H
#define LIST_H 1
size_t list_size(const struct list *);
bool list_is_empty(const struct list *);
-#define LIST_ELEM__(ELEM, STRUCT, MEMBER, LIST) \
- (ELEM != LIST ? CONTAINER_OF(ELEM, STRUCT, MEMBER) : NULL)
#define LIST_FOR_EACH(ITER, STRUCT, MEMBER, LIST) \
- for (ITER = LIST_ELEM__((LIST)->next, STRUCT, MEMBER, LIST); \
- ITER != NULL; \
- ITER = LIST_ELEM__((ITER)->MEMBER.next, STRUCT, MEMBER, LIST))
+ for (ITER = CONTAINER_OF((LIST)->next, STRUCT, MEMBER); \
+ &(ITER)->MEMBER != (LIST); \
+ ITER = CONTAINER_OF((ITER)->MEMBER.next, STRUCT, MEMBER))
+#define LIST_FOR_EACH_REVERSE(ITER, STRUCT, MEMBER, LIST) \
+ for (ITER = CONTAINER_OF((LIST)->prev, STRUCT, MEMBER); \
+ &(ITER)->MEMBER != (LIST); \
+ ITER = CONTAINER_OF((ITER)->MEMBER.prev, STRUCT, MEMBER))
#define LIST_FOR_EACH_SAFE(ITER, NEXT, STRUCT, MEMBER, LIST) \
- for (ITER = LIST_ELEM__((LIST)->next, STRUCT, MEMBER, LIST); \
- (ITER != NULL \
- ? (NEXT = LIST_ELEM__((ITER)->MEMBER.next, \
- STRUCT, MEMBER, LIST), 1) \
- : 0); \
+ for (ITER = CONTAINER_OF((LIST)->next, STRUCT, MEMBER); \
+ (NEXT = CONTAINER_OF((ITER)->MEMBER.next, STRUCT, MEMBER), \
+ &(ITER)->MEMBER != (LIST)); \
ITER = NEXT)
#endif /* list.h */