include/isc/list.h

18 /* $Id: list.h,v 1.19 2002/05/09 07:09:30 marka Exp $ */
32 #define ISC_LIST_INIT(list) \
33 	do { (list).head = NULL; (list).tail = NULL; } while (0)
45 #define ISC_LIST_HEAD(list) ((list).head)
46 #define ISC_LIST_TAIL(list) ((list).tail)
47 #define ISC_LIST_EMPTY(list) ISC_TF((list).head == NULL)
49 #define __ISC_LIST_PREPENDUNSAFE(list, elt, link) \
51 		if ((list).head != NULL) \
52 			(list).head->link.prev = (elt); \
54 			(list).tail = (elt); \
56 		(elt)->link.next = (list).head; \
57 		(list).head = (elt); \
60 #define ISC_LIST_PREPEND(list, elt, link) \
63 		__ISC_LIST_PREPENDUNSAFE(list, elt, link); \
66 #define ISC_LIST_INITANDPREPEND(list, elt, link) \
67 		__ISC_LIST_PREPENDUNSAFE(list, elt, link)
69 #define __ISC_LIST_APPENDUNSAFE(list, elt, link) \
71 		if ((list).tail != NULL) \
72 			(list).tail->link.next = (elt); \
74 			(list).head = (elt); \
75 		(elt)->link.prev = (list).tail; \
77 		(list).tail = (elt); \
80 #define ISC_LIST_APPEND(list, elt, link) \
83 		__ISC_LIST_APPENDUNSAFE(list, elt, link); \
86 #define ISC_LIST_INITANDAPPEND(list, elt, link) \
87 		__ISC_LIST_APPENDUNSAFE(list, elt, link)
89 #define __ISC_LIST_UNLINKUNSAFE_TYPE(list, elt, link, type) \
94 			(list).tail = (elt)->link.prev; \
98 			(list).head = (elt)->link.next; \
103 #define __ISC_LIST_UNLINKUNSAFE(list, elt, link) \
104 	__ISC_LIST_UNLINKUNSAFE_TYPE(list, elt, link, void)
106 #define ISC_LIST_UNLINK_TYPE(list, elt, link, type) \
109 		__ISC_LIST_UNLINKUNSAFE_TYPE(list, elt, link, type); \
111 #define ISC_LIST_UNLINK(list, elt, link) \
112 	ISC_LIST_UNLINK_TYPE(list, elt, link, void)
117 #define __ISC_LIST_INSERTBEFOREUNSAFE(list, before, elt, link) \
120 			ISC_LIST_PREPEND(list, elt, link); \
129 #define ISC_LIST_INSERTBEFORE(list, before, elt, link) \
133 		__ISC_LIST_INSERTBEFOREUNSAFE(list, before, elt, link); \
136 #define __ISC_LIST_INSERTAFTERUNSAFE(list, after, elt, link) \
139 			ISC_LIST_APPEND(list, elt, link); \
148 #define ISC_LIST_INSERTAFTER(list, after, elt, link) \
152 		__ISC_LIST_INSERTAFTERUNSAFE(list, after, elt, link); \
168 #define ISC_LIST_ENQUEUE(list, elt, link) ISC_LIST_APPEND(list, elt, link)
169 #define __ISC_LIST_ENQUEUEUNSAFE(list, elt, link) \
170 	__ISC_LIST_APPENDUNSAFE(list, elt, link)
171 #define ISC_LIST_DEQUEUE(list, elt, link) \
172 	 ISC_LIST_UNLINK_TYPE(list, elt, link, void)
173 #define ISC_LIST_DEQUEUE_TYPE(list, elt, link, type) \
174 	 ISC_LIST_UNLINK_TYPE(list, elt, link, type)
175 #define __ISC_LIST_DEQUEUEUNSAFE(list, elt, link) \
176 	__ISC_LIST_UNLINKUNSAFE_TYPE(list, elt, link, void)
177 #define __ISC_LIST_DEQUEUEUNSAFE_TYPE(list, elt, link, type) \
178 	__ISC_LIST_UNLINKUNSAFE_TYPE(list, elt, link, type)