1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/* ISC license. */
#include <stdint.h>
#include <string.h>
#include <skalibs/uint64.h>
#include <skalibs/tai.h>
#include <skalibs/gensetdyn.h>
#include <skalibs/avltree.h>
#include <s6-dns/dcache.h>
static int key_cmp (void const *a, void const *b, void *x)
{
dcache_key_t const *ka = a ;
dcache_key_t const *kb = b ;
if (ka->len < kb->len) return -1 ;
if (kb->len < ka->len) return 1 ;
(void)x ;
return memcmp(ka->s, kb->s, ka->len) ;
}
static int tain_cmp (void const *a, void const *b, void *x)
{
tain const *ta = a ;
tain const *tb = b ;
(void)x ;
return tain_less(ta, tb) ? -1 : tain_less(tb, ta) ;
}
static void *key_dtok (uint32_t d, void *x)
{
return &GENSETDYN_P(dcache_node_t, (gensetdyn *)x, d)->key ;
}
static void *entry_dtok (uint32_t d, void *x)
{
return &GENSETDYN_P(dcache_node_t, (gensetdyn *)x, d)->entry ;
}
static void *expire_dtok (uint32_t d, void *x)
{
return &GENSETDYN_P(dcache_node_t, (gensetdyn *)x, d)->expire ;
}
void dcache_init (dcache_t *z, uint64_t max)
{
gensetdyn_init(&z->storage, sizeof(dcache_node_t), max >> 9, 3, 8) ;
avltree_init(&z->by_key, max >> 9, 3, 8, &key_dtok, &key_cmp, &z->storage) ;
avltree_init(&z->by_entry, max >> 9, 3, 8, &entry_dtok, &tain_cmp, &z->storage) ;
avltree_init(&z->by_expire, max >> 9, 3, 8, &expire_dtok, &tain_cmp, &z->storage) ;
z->size = 0 ;
z->motion = 0 ;
}
|
