/*
- * Copyright 2001-2002 The OpenLDAP Foundation, Redwood City, California, USA
+ * Copyright 2001-2003 The OpenLDAP Foundation, Redwood City, California, USA
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
struct type *sle_next; /* next element */ \
}
+#define LDAP_SLIST_ENTRY_INITIALIZER(entry) \
+ { NULL }
+
/*
* Singly-linked List functions.
*/
struct type *stqe_next; /* next element */ \
}
+#define LDAP_STAILQ_ENTRY_INITIALIZER(entry) \
+ { NULL }
+
/*
* Singly-linked Tail queue functions.
*/
struct type **le_prev; /* address of previous next element */ \
}
+#define LDAP_LIST_ENTRY_INITIALIZER(entry) \
+ { NULL, NULL }
+
/*
* List functions.
*/
struct type **tqe_prev; /* address of previous next element */ \
}
+#define LDAP_TAILQ_ENTRY_INITIALIZER(entry) \
+ { NULL, NULL }
+
/*
* Tail queue functions.
*/
#define LDAP_TAILQ_FOREACH(var, head, field) \
for (var = LDAP_TAILQ_FIRST(head); var; var = TAILQ_NEXT(var, field))
-#define LDAP_TAILQ_FOREACH_REVERSE(var, head, headname, field) \
- for ((var) = LDAP_TAILQ_LAST((head), headname); \
+#define LDAP_TAILQ_FOREACH_REVERSE(var, head, type, field) \
+ for ((var) = LDAP_TAILQ_LAST((head), type, field); \
(var); \
- (var) = LDAP_TAILQ_PREV((var), headname, field))
+ (var) = LDAP_TAILQ_PREV((var), head, type, field))
#define LDAP_TAILQ_FIRST(head) ((head)->tqh_first)
-#define LDAP_TAILQ_LAST(head, headname) \
- (*(((struct headname *)((head)->tqh_last))->tqh_last))
+#define LDAP_TAILQ_LAST(head, type, field) \
+ (LDAP_TAILQ_EMPTY(head) ? \
+ NULL : \
+ ((struct type *) \
+ ((char *)((head)->tqh_last) - offsetof(struct type, field))))
#define LDAP_TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
-#define LDAP_TAILQ_PREV(elm, headname, field) \
- (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
+#define LDAP_TAILQ_PREV(elm, head, type, field) \
+ ((struct type *)((elm)->field.tqe_prev) == LDAP_TAILQ_FIRST(head) ? \
+ NULL : \
+ ((struct type *) \
+ ((char *)((elm)->field.tqe_prev) - offsetof(struct type, field))))
#define LDAP_TAILQ_INIT(head) do { \
(head)->tqh_first = NULL; \