mirror/labs-bird
1
0
Fork 0
mirror of https://gitlab.labs.nic.cz/labs/bird.git synced 2024-05-11 16:54:54 +00:00
Code Releases Activity

Merge branch 'master' into int-new

Browse Source
This commit is contained in:
Ondrej Zajicek (work)
2016-11-08 19:27:58 +01:00
parent cc5b93f72d c8cafc8ebb
commit 8860e991f6
89 changed files with 2693 additions and 1625 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
lib/hash.h
View File

@@ -1,8 +1,18 @@
/*
* BIRD Library -- Generic Hash Table
*
* (c) 2013 Ondrej Zajicek <santiago@crfreenet.org>
* (c) 2013 CZ.NIC z.s.p.o.
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _BIRD_HASH_H_
#define _BIRD_HASH_H_
#define HASH(type) struct { type **data; uint count, order; }
#define HASH_TYPE(v) typeof(** (v).data)
#define HASH_SIZE(v) (1 << (v).order)
#define HASH_SIZE(v) (1U << (v).order)
#define HASH_EQ(v,id,k1,k2...) (id##_EQ(k1, k2))
#define HASH_FN(v,id,key...) ((u32) (id##_FN(key)) >> (32 - (v).order))
@@ -116,12 +126,12 @@
#define HASH_MAY_RESIZE_DOWN_(v,pool,rehash_fn,args) \
({ \
int _o = (v).order; \
while (((v).count < ((1 << _o) REHASH_LO_MARK(args))) && \
uint _o = (v).order; \
while (((v).count < ((1U << _o) REHASH_LO_MARK(args))) && \
(_o > (REHASH_LO_BOUND(args)))) \
_o -= (REHASH_LO_STEP(args)); \
if (_o < (v).order) \
rehash_fn(&(v), pool, _o - (int) (v).order); \
rehash_fn(&(v), pool, _o - (v).order); \
})
@@ -178,6 +188,7 @@
#define HASH_WALK_FILTER_END } while (0)
static inline void
mem_hash_init(u64 *h)
{
@@ -185,14 +196,15 @@ mem_hash_init(u64 *h)
}
static inline void
mem_hash_mix(u64 *h, void *p, int s)
mem_hash_mix(u64 *h, void *p, uint s)
{
const u64 multiplier = 0xb38bc09a61202731ULL;
const char *pp = p;
uint i;
for (i=0; i<s/4; i++)
*h = *h * multiplier + ((const u32 *)pp)[i];
for (i=s & ~0x3; i<s; i++)
*h = *h * multiplier + pp[i];
}
@@ -204,7 +216,7 @@ mem_hash_value(u64 *h)
}
static inline uint
mem_hash(void *p, int s)
mem_hash(void *p, uint s)
{
static u64 h;
mem_hash_init(&h);
@@ -212,3 +224,4 @@ mem_hash(void *p, int s)
return mem_hash_value(&h);
}
#endif