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0025e5d63d
Make ll_ functions faster by having a name hash, and allow for deletion. Also, allow them to work without calling ll_init_map.
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
#ifndef __HLIST_H__
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#define __HLIST_H__ 1
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/* Hash list stuff from kernel */
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#include <stddef.h>
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#define container_of(ptr, type, member) ({ \
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const typeof( ((type *)0)->member ) *__mptr = (ptr); \
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(type *)( (char *)__mptr - offsetof(type,member) );})
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struct hlist_head {
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struct hlist_node *first;
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};
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struct hlist_node {
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struct hlist_node *next, **pprev;
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};
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static inline void hlist_del(struct hlist_node *n)
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{
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struct hlist_node *next = n->next;
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struct hlist_node **pprev = n->pprev;
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*pprev = next;
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if (next)
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next->pprev = pprev;
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}
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static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h)
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{
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struct hlist_node *first = h->first;
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n->next = first;
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if (first)
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first->pprev = &n->next;
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h->first = n;
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n->pprev = &h->first;
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}
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#define hlist_for_each(pos, head) \
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for (pos = (head)->first; pos ; pos = pos->next)
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#define hlist_for_each_safe(pos, n, head) \
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for (pos = (head)->first; pos && ({ n = pos->next; 1; }); \
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pos = n)
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#define hlist_entry_safe(ptr, type, member) \
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({ typeof(ptr) ____ptr = (ptr); \
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____ptr ? hlist_entry(____ptr, type, member) : NULL; \
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})
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#define hlist_for_each_entry(pos, head, member) \
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for (pos = hlist_entry_safe((head)->first, typeof(*(pos)), member);\
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pos; \
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pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member))
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#endif /* __HLIST_H__ */
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