mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-09-18 19:35:20 +00:00
84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
|
|
|
|
#define HASH(type) struct { type **data; uint used, size; }
|
|
#define HASH_TYPE(v) typeof(** (v).data)
|
|
#define HASH_SIZE(v) ((v).size * sizeof(* (v).data))
|
|
|
|
#define HASH_INIT(v,pool,isize) \
|
|
({ \
|
|
(v).used = 0; \
|
|
(v).size = (isize); \
|
|
(v).data = mb_allocz(pool, HASH_SIZE(v)); \
|
|
})
|
|
|
|
#define HASH_FIND(v,id,key) \
|
|
({ \
|
|
HASH_TYPE(v) *_n = (v).data[id##_FN(key, (v).size)]; \
|
|
while (_n && !id##_EQ(_n, key)) \
|
|
_n = _n->id##_NEXT; \
|
|
_n; \
|
|
})
|
|
|
|
#define HASH_INSERT(v,id,key,node) \
|
|
({ \
|
|
HASH_TYPE(v) **_nn = (v).data + id##_FN(key, (v).size); \
|
|
node->id##_NEXT = *_nn; \
|
|
*_nn = node; \
|
|
})
|
|
|
|
#define HASH_DELETE(v,id,key) \
|
|
({ \
|
|
HASH_TYPE(v) **_nn = (v).data + id##_FN(key, (v).size); \
|
|
while ((*_nn) && !id##_EQ(*_nn, key)) \
|
|
_nn = &((*_nn)->id##_NEXT); \
|
|
\
|
|
HASH_TYPE(v) *_n = *_nn; \
|
|
if (_n) \
|
|
*_nn = _n->id##_NEXT; \
|
|
_n; \
|
|
})
|
|
|
|
#define HASH_REMOVE(v,id,node) \
|
|
({ \
|
|
HASH_TYPE(v) **_nn = (v).data + id##_FN(key, (v).size); \
|
|
while ((*_nn) && (*_nn != (node))) \
|
|
_nn = &((*_nn)->id##_NEXT); \
|
|
\
|
|
HASH_TYPE(v) *_n = *_nn; \
|
|
if (_n) \
|
|
*_nn = _n->id##_NEXT; \
|
|
_n; \
|
|
})
|
|
|
|
|
|
|
|
#define HASH_WALK(v,next,n) \
|
|
do { \
|
|
HASH_TYPE(v) *n; \
|
|
uint _i; \
|
|
for (_i = 0; _i < ((v).size); _i++) \
|
|
for (n = (v).data[_i]; n; n = n->next)
|
|
|
|
#define HASH_WALK_END } while (0)
|
|
|
|
|
|
#define HASH_WALK_DELSAFE(v,next,n) \
|
|
do { \
|
|
HASH_TYPE(v) *n, *_next; \
|
|
uint _i; \
|
|
for (_i = 0; _i < ((v).size); _i++) \
|
|
for (n = (v).data[_i]; n && (_next = n->next, 1); n = _next)
|
|
|
|
#define HASH_WALK_DELSAFE_END } while (0)
|
|
|
|
/*
|
|
define HASH_REHASH(s) \
|
|
({ \
|
|
type *_n; \
|
|
uint _i; \
|
|
for (_i = 0; _i < (size_f); _i++) \
|
|
for (_n = (hash)[_i]; _n != NULL; _n =
|
|
|
|
*/
|
|
|