2021-07-29 17:46:25 +02:00
|
|
|
/*
|
|
|
|
|
Copyright (c) 2003-2018, Troy D. Hanson http://troydhanson.github.com/uthash/
|
|
|
|
|
All rights reserved.
|
|
|
|
|
|
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
|
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
|
|
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
|
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
|
|
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
|
|
|
|
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
|
|
|
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
|
|
|
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
|
|
|
|
|
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
|
|
|
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
|
|
|
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
|
|
|
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
|
|
|
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
|
|
|
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
|
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifndef UTHASH_H
|
|
|
|
|
#define UTHASH_H
|
|
|
|
|
|
|
|
|
|
#define UTHASH_VERSION 2.1.0
|
|
|
|
|
|
2022-09-29 15:34:44 +02:00
|
|
|
#include <stddef.h> /* ptrdiff_t */
|
|
|
|
|
#include <stdlib.h> /* exit */
|
|
|
|
|
#include <string.h> /* memcmp, memset, strlen */
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
/* These macros use decltype or the earlier __typeof GNU extension.
|
|
|
|
|
As decltype is only available in newer compilers (VS2010 or gcc 4.3+
|
|
|
|
|
when compiling c++ source) this code uses whatever method is needed
|
|
|
|
|
or, for VS2008 where neither is available, uses casting workarounds. */
|
|
|
|
|
#if !defined(DECLTYPE) && !defined(NO_DECLTYPE)
|
2022-09-29 15:34:44 +02:00
|
|
|
#if defined(_MSC_VER) /* MS compiler */
|
|
|
|
|
#if _MSC_VER >= 1600 && defined(__cplusplus) /* VS2010 or newer in C++ mode */
|
2021-07-29 17:46:25 +02:00
|
|
|
#define DECLTYPE(x) (decltype(x))
|
2022-09-29 15:34:44 +02:00
|
|
|
#else /* VS2008 or older (or VS2010 in C mode) */
|
2021-07-29 17:46:25 +02:00
|
|
|
#define NO_DECLTYPE
|
|
|
|
|
#endif
|
|
|
|
|
#elif defined(__BORLANDC__) || defined(__ICCARM__) || defined(__LCC__) || defined(__WATCOMC__)
|
|
|
|
|
#define NO_DECLTYPE
|
2022-09-29 15:34:44 +02:00
|
|
|
#else /* GNU, Sun and other compilers */
|
2021-07-29 17:46:25 +02:00
|
|
|
#define DECLTYPE(x) (__typeof(x))
|
|
|
|
|
#endif
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#ifdef NO_DECLTYPE
|
|
|
|
|
#define DECLTYPE(x)
|
2022-09-29 15:34:44 +02:00
|
|
|
#define DECLTYPE_ASSIGN(dst, src) \
|
|
|
|
|
do { \
|
|
|
|
|
char **_da_dst = (char **) (&(dst)); \
|
|
|
|
|
*_da_dst = (char *) (src); \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
#else
|
2022-09-29 15:34:44 +02:00
|
|
|
#define DECLTYPE_ASSIGN(dst, src) \
|
|
|
|
|
do { \
|
|
|
|
|
(dst) = DECLTYPE(dst)(src); \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* a number of the hash function use uint32_t which isn't defined on Pre VS2010 */
|
|
|
|
|
#if defined(_WIN32)
|
|
|
|
|
#if defined(_MSC_VER) && _MSC_VER >= 1600
|
|
|
|
|
#include <stdint.h>
|
|
|
|
|
#elif defined(__WATCOMC__) || defined(__MINGW32__) || defined(__CYGWIN__)
|
|
|
|
|
#include <stdint.h>
|
|
|
|
|
#else
|
|
|
|
|
typedef unsigned int uint32_t;
|
|
|
|
|
typedef unsigned char uint8_t;
|
|
|
|
|
#endif
|
|
|
|
|
#elif defined(__GNUC__) && !defined(__VXWORKS__)
|
|
|
|
|
#include <stdint.h>
|
|
|
|
|
#else
|
|
|
|
|
typedef unsigned int uint32_t;
|
|
|
|
|
typedef unsigned char uint8_t;
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#ifndef uthash_malloc
|
2022-09-29 15:34:44 +02:00
|
|
|
#define uthash_malloc(sz) malloc(sz) /* malloc fcn */
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
#ifndef uthash_free
|
2022-09-29 15:34:44 +02:00
|
|
|
#define uthash_free(ptr, sz) free(ptr) /* free fcn */
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
#ifndef uthash_bzero
|
2022-09-29 15:34:44 +02:00
|
|
|
#define uthash_bzero(a, n) memset(a, '\0', n)
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
#ifndef uthash_strlen
|
|
|
|
|
#define uthash_strlen(s) strlen(s)
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#ifdef uthash_memcmp
|
|
|
|
|
/* This warning will not catch programs that define uthash_memcmp AFTER including uthash.h. */
|
|
|
|
|
#warning "uthash_memcmp is deprecated; please use HASH_KEYCMP instead"
|
|
|
|
|
#else
|
2022-09-29 15:34:44 +02:00
|
|
|
#define uthash_memcmp(a, b, n) memcmp(a, b, n)
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#ifndef HASH_KEYCMP
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_KEYCMP(a, b, n) uthash_memcmp(a, b, n)
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#ifndef uthash_noexpand_fyi
|
2022-09-29 15:34:44 +02:00
|
|
|
#define uthash_noexpand_fyi(tbl) /* can be defined to log noexpand */
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
#ifndef uthash_expand_fyi
|
2022-09-29 15:34:44 +02:00
|
|
|
#define uthash_expand_fyi(tbl) /* can be defined to log expands */
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#ifndef HASH_NONFATAL_OOM
|
|
|
|
|
#define HASH_NONFATAL_OOM 0
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#if HASH_NONFATAL_OOM
|
|
|
|
|
/* malloc failures can be recovered from */
|
|
|
|
|
|
|
|
|
|
#ifndef uthash_nonfatal_oom
|
2022-09-29 15:34:44 +02:00
|
|
|
#define uthash_nonfatal_oom(obj) \
|
|
|
|
|
do { \
|
|
|
|
|
} while (0) /* non-fatal OOM error */
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_RECORD_OOM(oomed) \
|
|
|
|
|
do { \
|
|
|
|
|
(oomed) = 1; \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
#define IF_HASH_NONFATAL_OOM(x) x
|
|
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
/* malloc failures result in lost memory, hash tables are unusable */
|
|
|
|
|
|
|
|
|
|
#ifndef uthash_fatal
|
2022-09-29 15:34:44 +02:00
|
|
|
#define uthash_fatal(msg) exit(-1) /* fatal OOM error */
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#define HASH_RECORD_OOM(oomed) uthash_fatal("out of memory")
|
|
|
|
|
#define IF_HASH_NONFATAL_OOM(x)
|
|
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* initial number of buckets */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_INITIAL_NUM_BUCKETS 32U /* initial number of buckets */
|
2021-07-29 17:46:25 +02:00
|
|
|
#define HASH_INITIAL_NUM_BUCKETS_LOG2 5U /* lg2 of initial number of buckets */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_BKT_CAPACITY_THRESH 10U /* expand when bucket count reaches */
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
/* calculate the element whose hash handle address is hhp */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define ELMT_FROM_HH(tbl, hhp) ((void *) (((char *) (hhp)) - ((tbl)->hho)))
|
2021-07-29 17:46:25 +02:00
|
|
|
/* calculate the hash handle from element address elp */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HH_FROM_ELMT(tbl, elp) ((UT_hash_handle *) (((char *) (elp)) + ((tbl)->hho)))
|
|
|
|
|
|
|
|
|
|
#define HASH_ROLLBACK_BKT(hh, head, itemptrhh) \
|
|
|
|
|
do { \
|
|
|
|
|
struct UT_hash_handle *_hd_hh_item = (itemptrhh); \
|
|
|
|
|
unsigned _hd_bkt; \
|
|
|
|
|
HASH_TO_BKT(_hd_hh_item->hashv, (head)->hh.tbl->num_buckets, _hd_bkt); \
|
|
|
|
|
(head)->hh.tbl->buckets[_hd_bkt].count++; \
|
|
|
|
|
_hd_hh_item->hh_next = NULL; \
|
|
|
|
|
_hd_hh_item->hh_prev = NULL; \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_VALUE(keyptr, keylen, hashv) \
|
|
|
|
|
do { \
|
|
|
|
|
HASH_FCN(keyptr, keylen, hashv); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_FIND_BYHASHVALUE(hh, head, keyptr, keylen, hashval, out) \
|
|
|
|
|
do { \
|
|
|
|
|
(out) = NULL; \
|
|
|
|
|
if (head) { \
|
|
|
|
|
unsigned _hf_bkt; \
|
|
|
|
|
HASH_TO_BKT(hashval, (head)->hh.tbl->num_buckets, _hf_bkt); \
|
|
|
|
|
if (HASH_BLOOM_TEST((head)->hh.tbl, hashval) != 0) { \
|
|
|
|
|
HASH_FIND_IN_BKT((head)->hh.tbl, hh, (head)->hh.tbl->buckets[_hf_bkt], keyptr, keylen, hashval, out); \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_FIND(hh, head, keyptr, keylen, out) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _hf_hashv; \
|
|
|
|
|
HASH_VALUE(keyptr, keylen, _hf_hashv); \
|
|
|
|
|
HASH_FIND_BYHASHVALUE(hh, head, keyptr, keylen, _hf_hashv, out); \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
#ifdef HASH_BLOOM
|
|
|
|
|
#define HASH_BLOOM_BITLEN (1UL << HASH_BLOOM)
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_BLOOM_BYTELEN (HASH_BLOOM_BITLEN / 8UL) + (((HASH_BLOOM_BITLEN % 8UL) != 0UL) ? 1UL : 0UL)
|
|
|
|
|
#define HASH_BLOOM_MAKE(tbl, oomed) \
|
|
|
|
|
do { \
|
|
|
|
|
(tbl)->bloom_nbits = HASH_BLOOM; \
|
|
|
|
|
(tbl)->bloom_bv = (uint8_t *) uthash_malloc(HASH_BLOOM_BYTELEN); \
|
|
|
|
|
if (!(tbl)->bloom_bv) { \
|
|
|
|
|
HASH_RECORD_OOM(oomed); \
|
|
|
|
|
} else { \
|
|
|
|
|
uthash_bzero((tbl)->bloom_bv, HASH_BLOOM_BYTELEN); \
|
|
|
|
|
(tbl)->bloom_sig = HASH_BLOOM_SIGNATURE; \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_BLOOM_FREE(tbl) \
|
|
|
|
|
do { \
|
|
|
|
|
uthash_free((tbl)->bloom_bv, HASH_BLOOM_BYTELEN); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_BLOOM_BITSET(bv, idx) (bv[(idx) / 8U] |= (1U << ((idx) % 8U)))
|
|
|
|
|
#define HASH_BLOOM_BITTEST(bv, idx) (bv[(idx) / 8U] & (1U << ((idx) % 8U)))
|
|
|
|
|
|
|
|
|
|
#define HASH_BLOOM_ADD(tbl, hashv) \
|
|
|
|
|
HASH_BLOOM_BITSET((tbl)->bloom_bv, ((hashv) & (uint32_t) ((1UL << (tbl)->bloom_nbits) - 1U)))
|
|
|
|
|
|
|
|
|
|
#define HASH_BLOOM_TEST(tbl, hashv) \
|
|
|
|
|
HASH_BLOOM_BITTEST((tbl)->bloom_bv, ((hashv) & (uint32_t) ((1UL << (tbl)->bloom_nbits) - 1U)))
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
#else
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_BLOOM_MAKE(tbl, oomed)
|
2021-07-29 17:46:25 +02:00
|
|
|
#define HASH_BLOOM_FREE(tbl)
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_BLOOM_ADD(tbl, hashv)
|
|
|
|
|
#define HASH_BLOOM_TEST(tbl, hashv) (1)
|
2021-07-29 17:46:25 +02:00
|
|
|
#define HASH_BLOOM_BYTELEN 0U
|
|
|
|
|
#endif
|
|
|
|
|
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_MAKE_TABLE(hh, head, oomed) \
|
|
|
|
|
do { \
|
|
|
|
|
(head)->hh.tbl = (UT_hash_table *) uthash_malloc(sizeof(UT_hash_table)); \
|
|
|
|
|
if (!(head)->hh.tbl) { \
|
|
|
|
|
HASH_RECORD_OOM(oomed); \
|
|
|
|
|
} else { \
|
|
|
|
|
uthash_bzero((head)->hh.tbl, sizeof(UT_hash_table)); \
|
|
|
|
|
(head)->hh.tbl->tail = &((head)->hh); \
|
|
|
|
|
(head)->hh.tbl->num_buckets = HASH_INITIAL_NUM_BUCKETS; \
|
|
|
|
|
(head)->hh.tbl->log2_num_buckets = HASH_INITIAL_NUM_BUCKETS_LOG2; \
|
|
|
|
|
(head)->hh.tbl->hho = (char *) (&(head)->hh) - (char *) (head); \
|
|
|
|
|
(head)->hh.tbl->buckets = (UT_hash_bucket *) uthash_malloc( \
|
|
|
|
|
HASH_INITIAL_NUM_BUCKETS * sizeof(struct UT_hash_bucket)); \
|
|
|
|
|
(head)->hh.tbl->signature = HASH_SIGNATURE; \
|
|
|
|
|
if (!(head)->hh.tbl->buckets) { \
|
|
|
|
|
HASH_RECORD_OOM(oomed); \
|
|
|
|
|
uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \
|
|
|
|
|
} else { \
|
|
|
|
|
uthash_bzero((head)->hh.tbl->buckets, \
|
|
|
|
|
HASH_INITIAL_NUM_BUCKETS * sizeof(struct UT_hash_bucket)); \
|
|
|
|
|
HASH_BLOOM_MAKE((head)->hh.tbl, oomed); \
|
|
|
|
|
IF_HASH_NONFATAL_OOM( \
|
|
|
|
|
if (oomed) { \
|
|
|
|
|
uthash_free((head)->hh.tbl->buckets, \
|
|
|
|
|
HASH_INITIAL_NUM_BUCKETS * sizeof(struct UT_hash_bucket)); \
|
|
|
|
|
uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \
|
|
|
|
|
}) \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_REPLACE_BYHASHVALUE_INORDER(hh, head, fieldname, keylen_in, hashval, add, replaced, cmpfcn) \
|
|
|
|
|
do { \
|
|
|
|
|
(replaced) = NULL; \
|
|
|
|
|
HASH_FIND_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, replaced); \
|
|
|
|
|
if (replaced) { \
|
|
|
|
|
HASH_DELETE(hh, head, replaced); \
|
|
|
|
|
} \
|
|
|
|
|
HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh, head, &((add)->fieldname), keylen_in, hashval, add, cmpfcn); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_REPLACE_BYHASHVALUE(hh, head, fieldname, keylen_in, hashval, add, replaced) \
|
|
|
|
|
do { \
|
|
|
|
|
(replaced) = NULL; \
|
|
|
|
|
HASH_FIND_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, replaced); \
|
|
|
|
|
if (replaced) { \
|
|
|
|
|
HASH_DELETE(hh, head, replaced); \
|
|
|
|
|
} \
|
|
|
|
|
HASH_ADD_KEYPTR_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, add); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_REPLACE(hh, head, fieldname, keylen_in, add, replaced) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _hr_hashv; \
|
|
|
|
|
HASH_VALUE(&((add)->fieldname), keylen_in, _hr_hashv); \
|
|
|
|
|
HASH_REPLACE_BYHASHVALUE(hh, head, fieldname, keylen_in, _hr_hashv, add, replaced); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_REPLACE_INORDER(hh, head, fieldname, keylen_in, add, replaced, cmpfcn) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _hr_hashv; \
|
|
|
|
|
HASH_VALUE(&((add)->fieldname), keylen_in, _hr_hashv); \
|
|
|
|
|
HASH_REPLACE_BYHASHVALUE_INORDER(hh, head, fieldname, keylen_in, _hr_hashv, add, replaced, cmpfcn); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_APPEND_LIST(hh, head, add) \
|
|
|
|
|
do { \
|
|
|
|
|
(add)->hh.next = NULL; \
|
|
|
|
|
(add)->hh.prev = ELMT_FROM_HH((head)->hh.tbl, (head)->hh.tbl->tail); \
|
|
|
|
|
(head)->hh.tbl->tail->next = (add); \
|
|
|
|
|
(head)->hh.tbl->tail = &((add)->hh); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_AKBI_INNER_LOOP(hh, head, add, cmpfcn) \
|
|
|
|
|
do { \
|
|
|
|
|
do { \
|
|
|
|
|
if (cmpfcn(DECLTYPE(head)(_hs_iter), add) > 0) { \
|
|
|
|
|
break; \
|
|
|
|
|
} \
|
|
|
|
|
} while ((_hs_iter = HH_FROM_ELMT((head)->hh.tbl, _hs_iter)->next)); \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
#ifdef NO_DECLTYPE
|
|
|
|
|
#undef HASH_AKBI_INNER_LOOP
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_AKBI_INNER_LOOP(hh, head, add, cmpfcn) \
|
|
|
|
|
do { \
|
|
|
|
|
char *_hs_saved_head = (char *) (head); \
|
|
|
|
|
do { \
|
|
|
|
|
DECLTYPE_ASSIGN(head, _hs_iter); \
|
|
|
|
|
if (cmpfcn(head, add) > 0) { \
|
|
|
|
|
DECLTYPE_ASSIGN(head, _hs_saved_head); \
|
|
|
|
|
break; \
|
|
|
|
|
} \
|
|
|
|
|
DECLTYPE_ASSIGN(head, _hs_saved_head); \
|
|
|
|
|
} while ((_hs_iter = HH_FROM_ELMT((head)->hh.tbl, _hs_iter)->next)); \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#if HASH_NONFATAL_OOM
|
|
|
|
|
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_ADD_TO_TABLE(hh, head, keyptr, keylen_in, hashval, add, oomed) \
|
|
|
|
|
do { \
|
|
|
|
|
if (!(oomed)) { \
|
|
|
|
|
unsigned _ha_bkt; \
|
|
|
|
|
(head)->hh.tbl->num_items++; \
|
|
|
|
|
HASH_TO_BKT(hashval, (head)->hh.tbl->num_buckets, _ha_bkt); \
|
|
|
|
|
HASH_ADD_TO_BKT((head)->hh.tbl->buckets[_ha_bkt], hh, &(add)->hh, oomed); \
|
|
|
|
|
if (oomed) { \
|
|
|
|
|
HASH_ROLLBACK_BKT(hh, head, &(add)->hh); \
|
|
|
|
|
HASH_DELETE_HH(hh, head, &(add)->hh); \
|
|
|
|
|
(add)->hh.tbl = NULL; \
|
|
|
|
|
uthash_nonfatal_oom(add); \
|
|
|
|
|
} else { \
|
|
|
|
|
HASH_BLOOM_ADD((head)->hh.tbl, hashval); \
|
|
|
|
|
HASH_EMIT_KEY(hh, head, keyptr, keylen_in); \
|
|
|
|
|
} \
|
|
|
|
|
} else { \
|
|
|
|
|
(add)->hh.tbl = NULL; \
|
|
|
|
|
uthash_nonfatal_oom(add); \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_ADD_TO_TABLE(hh, head, keyptr, keylen_in, hashval, add, oomed) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _ha_bkt; \
|
|
|
|
|
(head)->hh.tbl->num_items++; \
|
|
|
|
|
HASH_TO_BKT(hashval, (head)->hh.tbl->num_buckets, _ha_bkt); \
|
|
|
|
|
HASH_ADD_TO_BKT((head)->hh.tbl->buckets[_ha_bkt], hh, &(add)->hh, oomed); \
|
|
|
|
|
HASH_BLOOM_ADD((head)->hh.tbl, hashval); \
|
|
|
|
|
HASH_EMIT_KEY(hh, head, keyptr, keylen_in); \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh, head, keyptr, keylen_in, hashval, add, cmpfcn) \
|
|
|
|
|
do { \
|
|
|
|
|
IF_HASH_NONFATAL_OOM(int _ha_oomed = 0;) \
|
|
|
|
|
(add)->hh.hashv = (hashval); \
|
|
|
|
|
(add)->hh.key = (char *) (keyptr); \
|
|
|
|
|
(add)->hh.keylen = (unsigned) (keylen_in); \
|
|
|
|
|
if (!(head)) { \
|
|
|
|
|
(add)->hh.next = NULL; \
|
|
|
|
|
(add)->hh.prev = NULL; \
|
|
|
|
|
HASH_MAKE_TABLE(hh, add, _ha_oomed); \
|
|
|
|
|
IF_HASH_NONFATAL_OOM(if (!_ha_oomed) { ) \
|
2021-07-29 17:46:25 +02:00
|
|
|
(head) = (add); \
|
2022-09-29 15:34:44 +02:00
|
|
|
IF_HASH_NONFATAL_OOM( }) \
|
|
|
|
|
} else { \
|
|
|
|
|
void *_hs_iter = (head); \
|
|
|
|
|
(add)->hh.tbl = (head)->hh.tbl; \
|
|
|
|
|
HASH_AKBI_INNER_LOOP(hh, head, add, cmpfcn); \
|
|
|
|
|
if (_hs_iter) { \
|
|
|
|
|
(add)->hh.next = _hs_iter; \
|
|
|
|
|
if (((add)->hh.prev = HH_FROM_ELMT((head)->hh.tbl, _hs_iter)->prev)) { \
|
|
|
|
|
HH_FROM_ELMT((head)->hh.tbl, (add)->hh.prev)->next = (add); \
|
|
|
|
|
} else { \
|
|
|
|
|
(head) = (add); \
|
|
|
|
|
} \
|
|
|
|
|
HH_FROM_ELMT((head)->hh.tbl, _hs_iter)->prev = (add); \
|
|
|
|
|
} else { \
|
|
|
|
|
HASH_APPEND_LIST(hh, head, add); \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
HASH_ADD_TO_TABLE(hh, head, keyptr, keylen_in, hashval, add, _ha_oomed); \
|
|
|
|
|
HASH_FSCK(hh, head, "HASH_ADD_KEYPTR_BYHASHVALUE_INORDER"); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_ADD_KEYPTR_INORDER(hh, head, keyptr, keylen_in, add, cmpfcn) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _hs_hashv; \
|
|
|
|
|
HASH_VALUE(keyptr, keylen_in, _hs_hashv); \
|
|
|
|
|
HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh, head, keyptr, keylen_in, _hs_hashv, add, cmpfcn); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_ADD_BYHASHVALUE_INORDER(hh, head, fieldname, keylen_in, hashval, add, cmpfcn) \
|
|
|
|
|
HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh, head, &((add)->fieldname), keylen_in, hashval, add, cmpfcn)
|
|
|
|
|
|
|
|
|
|
#define HASH_ADD_INORDER(hh, head, fieldname, keylen_in, add, cmpfcn) \
|
|
|
|
|
HASH_ADD_KEYPTR_INORDER(hh, head, &((add)->fieldname), keylen_in, add, cmpfcn)
|
|
|
|
|
|
|
|
|
|
#define HASH_ADD_KEYPTR_BYHASHVALUE(hh, head, keyptr, keylen_in, hashval, add) \
|
|
|
|
|
do { \
|
|
|
|
|
IF_HASH_NONFATAL_OOM(int _ha_oomed = 0;) \
|
|
|
|
|
(add)->hh.hashv = (hashval); \
|
|
|
|
|
(add)->hh.key = (char *) (keyptr); \
|
|
|
|
|
(add)->hh.keylen = (unsigned) (keylen_in); \
|
|
|
|
|
if (!(head)) { \
|
|
|
|
|
(add)->hh.next = NULL; \
|
|
|
|
|
(add)->hh.prev = NULL; \
|
|
|
|
|
HASH_MAKE_TABLE(hh, add, _ha_oomed); \
|
|
|
|
|
IF_HASH_NONFATAL_OOM(if (!_ha_oomed) { ) \
|
2021-07-29 17:46:25 +02:00
|
|
|
(head) = (add); \
|
2022-09-29 15:34:44 +02:00
|
|
|
IF_HASH_NONFATAL_OOM( }) \
|
|
|
|
|
} else { \
|
|
|
|
|
(add)->hh.tbl = (head)->hh.tbl; \
|
|
|
|
|
HASH_APPEND_LIST(hh, head, add); \
|
|
|
|
|
} \
|
|
|
|
|
HASH_ADD_TO_TABLE(hh, head, keyptr, keylen_in, hashval, add, _ha_oomed); \
|
|
|
|
|
HASH_FSCK(hh, head, "HASH_ADD_KEYPTR_BYHASHVALUE"); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_ADD_KEYPTR(hh, head, keyptr, keylen_in, add) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _ha_hashv; \
|
|
|
|
|
HASH_VALUE(keyptr, keylen_in, _ha_hashv); \
|
|
|
|
|
HASH_ADD_KEYPTR_BYHASHVALUE(hh, head, keyptr, keylen_in, _ha_hashv, add); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_ADD_BYHASHVALUE(hh, head, fieldname, keylen_in, hashval, add) \
|
|
|
|
|
HASH_ADD_KEYPTR_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, add)
|
|
|
|
|
|
|
|
|
|
#define HASH_ADD(hh, head, fieldname, keylen_in, add) \
|
|
|
|
|
HASH_ADD_KEYPTR(hh, head, &((add)->fieldname), keylen_in, add)
|
|
|
|
|
|
|
|
|
|
#define HASH_TO_BKT(hashv, num_bkts, bkt) \
|
|
|
|
|
do { \
|
|
|
|
|
bkt = ((hashv) & ((num_bkts) -1U)); \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
/* delete "delptr" from the hash table.
|
|
|
|
|
* "the usual" patch-up process for the app-order doubly-linked-list.
|
|
|
|
|
* The use of _hd_hh_del below deserves special explanation.
|
|
|
|
|
* These used to be expressed using (delptr) but that led to a bug
|
|
|
|
|
* if someone used the same symbol for the head and deletee, like
|
|
|
|
|
* HASH_DELETE(hh,users,users);
|
|
|
|
|
* We want that to work, but by changing the head (users) below
|
|
|
|
|
* we were forfeiting our ability to further refer to the deletee (users)
|
|
|
|
|
* in the patch-up process. Solution: use scratch space to
|
|
|
|
|
* copy the deletee pointer, then the latter references are via that
|
|
|
|
|
* scratch pointer rather than through the repointed (users) symbol.
|
|
|
|
|
*/
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_DELETE(hh, head, delptr) \
|
|
|
|
|
HASH_DELETE_HH(hh, head, &(delptr)->hh)
|
|
|
|
|
|
|
|
|
|
#define HASH_DELETE_HH(hh, head, delptrhh) \
|
|
|
|
|
do { \
|
|
|
|
|
struct UT_hash_handle *_hd_hh_del = (delptrhh); \
|
|
|
|
|
if ((_hd_hh_del->prev == NULL) && (_hd_hh_del->next == NULL)) { \
|
|
|
|
|
HASH_BLOOM_FREE((head)->hh.tbl); \
|
|
|
|
|
uthash_free((head)->hh.tbl->buckets, \
|
|
|
|
|
(head)->hh.tbl->num_buckets * sizeof(struct UT_hash_bucket)); \
|
|
|
|
|
uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \
|
|
|
|
|
(head) = NULL; \
|
|
|
|
|
} else { \
|
|
|
|
|
unsigned _hd_bkt; \
|
|
|
|
|
if (_hd_hh_del == (head)->hh.tbl->tail) { \
|
|
|
|
|
(head)->hh.tbl->tail = HH_FROM_ELMT((head)->hh.tbl, _hd_hh_del->prev); \
|
|
|
|
|
} \
|
|
|
|
|
if (_hd_hh_del->prev != NULL) { \
|
|
|
|
|
HH_FROM_ELMT((head)->hh.tbl, _hd_hh_del->prev)->next = _hd_hh_del->next; \
|
|
|
|
|
} else { \
|
|
|
|
|
DECLTYPE_ASSIGN(head, _hd_hh_del->next); \
|
|
|
|
|
} \
|
|
|
|
|
if (_hd_hh_del->next != NULL) { \
|
|
|
|
|
HH_FROM_ELMT((head)->hh.tbl, _hd_hh_del->next)->prev = _hd_hh_del->prev; \
|
|
|
|
|
} \
|
|
|
|
|
HASH_TO_BKT(_hd_hh_del->hashv, (head)->hh.tbl->num_buckets, _hd_bkt); \
|
|
|
|
|
HASH_DEL_IN_BKT((head)->hh.tbl->buckets[_hd_bkt], _hd_hh_del); \
|
|
|
|
|
(head)->hh.tbl->num_items--; \
|
|
|
|
|
} \
|
|
|
|
|
HASH_FSCK(hh, head, "HASH_DELETE_HH"); \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
/* convenience forms of HASH_FIND/HASH_ADD/HASH_DEL */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_FIND_STR(head, findstr, out) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _uthash_hfstr_keylen = (unsigned) uthash_strlen(findstr); \
|
|
|
|
|
HASH_FIND(hh, head, findstr, _uthash_hfstr_keylen, out); \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define HASH_ADD_STR(head, strfield, add) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _uthash_hastr_keylen = (unsigned) uthash_strlen((add)->strfield); \
|
|
|
|
|
HASH_ADD(hh, head, strfield[0], _uthash_hastr_keylen, add); \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define HASH_REPLACE_STR(head, strfield, add, replaced) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _uthash_hrstr_keylen = (unsigned) uthash_strlen((add)->strfield); \
|
|
|
|
|
HASH_REPLACE(hh, head, strfield[0], _uthash_hrstr_keylen, add, replaced); \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define HASH_FIND_INT(head, findint, out) \
|
|
|
|
|
HASH_FIND(hh, head, findint, sizeof(int), out)
|
|
|
|
|
#define HASH_ADD_INT(head, intfield, add) \
|
|
|
|
|
HASH_ADD(hh, head, intfield, sizeof(int), add)
|
|
|
|
|
#define HASH_REPLACE_INT(head, intfield, add, replaced) \
|
|
|
|
|
HASH_REPLACE(hh, head, intfield, sizeof(int), add, replaced)
|
|
|
|
|
#define HASH_FIND_PTR(head, findptr, out) \
|
|
|
|
|
HASH_FIND(hh, head, findptr, sizeof(void *), out)
|
|
|
|
|
#define HASH_ADD_PTR(head, ptrfield, add) \
|
|
|
|
|
HASH_ADD(hh, head, ptrfield, sizeof(void *), add)
|
|
|
|
|
#define HASH_REPLACE_PTR(head, ptrfield, add, replaced) \
|
|
|
|
|
HASH_REPLACE(hh, head, ptrfield, sizeof(void *), add, replaced)
|
|
|
|
|
#define HASH_DEL(head, delptr) \
|
|
|
|
|
HASH_DELETE(hh, head, delptr)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
/* HASH_FSCK checks hash integrity on every add/delete when HASH_DEBUG is defined.
|
|
|
|
|
* This is for uthash developer only; it compiles away if HASH_DEBUG isn't defined.
|
|
|
|
|
*/
|
|
|
|
|
#ifdef HASH_DEBUG
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_OOPS(...) \
|
|
|
|
|
do { \
|
|
|
|
|
fprintf(stderr, __VA_ARGS__); \
|
|
|
|
|
exit(-1); \
|
|
|
|
|
} while (0)
|
|
|
|
|
#define HASH_FSCK(hh, head, where) \
|
|
|
|
|
do { \
|
|
|
|
|
struct UT_hash_handle *_thh; \
|
|
|
|
|
if (head) { \
|
|
|
|
|
unsigned _bkt_i; \
|
|
|
|
|
unsigned _count = 0; \
|
|
|
|
|
char *_prev; \
|
|
|
|
|
for (_bkt_i = 0; _bkt_i < (head)->hh.tbl->num_buckets; ++_bkt_i) { \
|
|
|
|
|
unsigned _bkt_count = 0; \
|
|
|
|
|
_thh = (head)->hh.tbl->buckets[_bkt_i].hh_head; \
|
|
|
|
|
_prev = NULL; \
|
|
|
|
|
while (_thh) { \
|
|
|
|
|
if (_prev != (char *) (_thh->hh_prev)) { \
|
|
|
|
|
HASH_OOPS("%s: invalid hh_prev %p, actual %p\n", \
|
|
|
|
|
(where), (void *) _thh->hh_prev, (void *) _prev); \
|
|
|
|
|
} \
|
|
|
|
|
_bkt_count++; \
|
|
|
|
|
_prev = (char *) (_thh); \
|
|
|
|
|
_thh = _thh->hh_next; \
|
|
|
|
|
} \
|
|
|
|
|
_count += _bkt_count; \
|
|
|
|
|
if ((head)->hh.tbl->buckets[_bkt_i].count != _bkt_count) { \
|
|
|
|
|
HASH_OOPS("%s: invalid bucket count %u, actual %u\n", \
|
|
|
|
|
(where), (head)->hh.tbl->buckets[_bkt_i].count, _bkt_count); \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
if (_count != (head)->hh.tbl->num_items) { \
|
|
|
|
|
HASH_OOPS("%s: invalid hh item count %u, actual %u\n", \
|
|
|
|
|
(where), (head)->hh.tbl->num_items, _count); \
|
|
|
|
|
} \
|
|
|
|
|
_count = 0; \
|
|
|
|
|
_prev = NULL; \
|
|
|
|
|
_thh = &(head)->hh; \
|
|
|
|
|
while (_thh) { \
|
|
|
|
|
_count++; \
|
|
|
|
|
if (_prev != (char *) _thh->prev) { \
|
|
|
|
|
HASH_OOPS("%s: invalid prev %p, actual %p\n", \
|
|
|
|
|
(where), (void *) _thh->prev, (void *) _prev); \
|
|
|
|
|
} \
|
|
|
|
|
_prev = (char *) ELMT_FROM_HH((head)->hh.tbl, _thh); \
|
|
|
|
|
_thh = (_thh->next ? HH_FROM_ELMT((head)->hh.tbl, _thh->next) : NULL); \
|
|
|
|
|
} \
|
|
|
|
|
if (_count != (head)->hh.tbl->num_items) { \
|
|
|
|
|
HASH_OOPS("%s: invalid app item count %u, actual %u\n", \
|
|
|
|
|
(where), (head)->hh.tbl->num_items, _count); \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
#else
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_FSCK(hh, head, where)
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* When compiled with -DHASH_EMIT_KEYS, length-prefixed keys are emitted to
|
|
|
|
|
* the descriptor to which this macro is defined for tuning the hash function.
|
|
|
|
|
* The app can #include <unistd.h> to get the prototype for write(2). */
|
|
|
|
|
#ifdef HASH_EMIT_KEYS
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_EMIT_KEY(hh, head, keyptr, fieldlen) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _klen = fieldlen; \
|
|
|
|
|
write(HASH_EMIT_KEYS, &_klen, sizeof(_klen)); \
|
|
|
|
|
write(HASH_EMIT_KEYS, keyptr, (unsigned long) fieldlen); \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
#else
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_EMIT_KEY(hh, head, keyptr, fieldlen)
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* default to Jenkin's hash unless overridden e.g. DHASH_FUNCTION=HASH_SAX */
|
|
|
|
|
#ifdef HASH_FUNCTION
|
|
|
|
|
#define HASH_FCN HASH_FUNCTION
|
|
|
|
|
#else
|
|
|
|
|
#define HASH_FCN HASH_JEN
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* The Bernstein hash function, used in Perl prior to v5.6. Note (x<<5+x)=x*33. */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_BER(key, keylen, hashv) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _hb_keylen = (unsigned) keylen; \
|
|
|
|
|
const unsigned char *_hb_key = (const unsigned char *) (key); \
|
|
|
|
|
(hashv) = 0; \
|
|
|
|
|
while (_hb_keylen-- != 0U) { \
|
|
|
|
|
(hashv) = (((hashv) << 5) + (hashv)) + *_hb_key++; \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
/* SAX/FNV/OAT/JEN hash functions are macro variants of those listed at
|
|
|
|
|
* http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_SAX(key, keylen, hashv) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _sx_i; \
|
|
|
|
|
const unsigned char *_hs_key = (const unsigned char *) (key); \
|
|
|
|
|
hashv = 0; \
|
|
|
|
|
for (_sx_i = 0; _sx_i < keylen; _sx_i++) { \
|
|
|
|
|
hashv ^= (hashv << 5) + (hashv >> 2) + _hs_key[_sx_i]; \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
/* FNV-1a variation */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_FNV(key, keylen, hashv) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _fn_i; \
|
|
|
|
|
const unsigned char *_hf_key = (const unsigned char *) (key); \
|
|
|
|
|
(hashv) = 2166136261U; \
|
|
|
|
|
for (_fn_i = 0; _fn_i < keylen; _fn_i++) { \
|
|
|
|
|
hashv = hashv ^ _hf_key[_fn_i]; \
|
|
|
|
|
hashv = hashv * 16777619U; \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_OAT(key, keylen, hashv) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _ho_i; \
|
|
|
|
|
const unsigned char *_ho_key = (const unsigned char *) (key); \
|
|
|
|
|
hashv = 0; \
|
|
|
|
|
for (_ho_i = 0; _ho_i < keylen; _ho_i++) { \
|
|
|
|
|
hashv += _ho_key[_ho_i]; \
|
|
|
|
|
hashv += (hashv << 10); \
|
|
|
|
|
hashv ^= (hashv >> 6); \
|
|
|
|
|
} \
|
|
|
|
|
hashv += (hashv << 3); \
|
|
|
|
|
hashv ^= (hashv >> 11); \
|
|
|
|
|
hashv += (hashv << 15); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_JEN_MIX(a, b, c) \
|
|
|
|
|
do { \
|
|
|
|
|
a -= b; \
|
|
|
|
|
a -= c; \
|
|
|
|
|
a ^= (c >> 13); \
|
|
|
|
|
b -= c; \
|
|
|
|
|
b -= a; \
|
|
|
|
|
b ^= (a << 8); \
|
|
|
|
|
c -= a; \
|
|
|
|
|
c -= b; \
|
|
|
|
|
c ^= (b >> 13); \
|
|
|
|
|
a -= b; \
|
|
|
|
|
a -= c; \
|
|
|
|
|
a ^= (c >> 12); \
|
|
|
|
|
b -= c; \
|
|
|
|
|
b -= a; \
|
|
|
|
|
b ^= (a << 16); \
|
|
|
|
|
c -= a; \
|
|
|
|
|
c -= b; \
|
|
|
|
|
c ^= (b >> 5); \
|
|
|
|
|
a -= b; \
|
|
|
|
|
a -= c; \
|
|
|
|
|
a ^= (c >> 3); \
|
|
|
|
|
b -= c; \
|
|
|
|
|
b -= a; \
|
|
|
|
|
b ^= (a << 10); \
|
|
|
|
|
c -= a; \
|
|
|
|
|
c -= b; \
|
|
|
|
|
c ^= (b >> 15); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_JEN(key, keylen, hashv) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _hj_i, _hj_j, _hj_k; \
|
|
|
|
|
unsigned const char *_hj_key = (unsigned const char *) (key); \
|
|
|
|
|
hashv = 0xfeedbeefu; \
|
|
|
|
|
_hj_i = _hj_j = 0x9e3779b9u; \
|
|
|
|
|
_hj_k = (unsigned) (keylen); \
|
|
|
|
|
while (_hj_k >= 12U) { \
|
|
|
|
|
_hj_i += (_hj_key[0] + ((unsigned) _hj_key[1] << 8) \
|
|
|
|
|
+ ((unsigned) _hj_key[2] << 16) \
|
|
|
|
|
+ ((unsigned) _hj_key[3] << 24)); \
|
|
|
|
|
_hj_j += (_hj_key[4] + ((unsigned) _hj_key[5] << 8) \
|
|
|
|
|
+ ((unsigned) _hj_key[6] << 16) \
|
|
|
|
|
+ ((unsigned) _hj_key[7] << 24)); \
|
|
|
|
|
hashv += (_hj_key[8] + ((unsigned) _hj_key[9] << 8) \
|
|
|
|
|
+ ((unsigned) _hj_key[10] << 16) \
|
|
|
|
|
+ ((unsigned) _hj_key[11] << 24)); \
|
|
|
|
|
\
|
|
|
|
|
HASH_JEN_MIX(_hj_i, _hj_j, hashv); \
|
|
|
|
|
\
|
|
|
|
|
_hj_key += 12; \
|
|
|
|
|
_hj_k -= 12U; \
|
|
|
|
|
} \
|
|
|
|
|
hashv += (unsigned) (keylen); \
|
|
|
|
|
switch (_hj_k) { \
|
|
|
|
|
case 11: \
|
|
|
|
|
hashv += ((unsigned) _hj_key[10] << 24); /* FALLTHROUGH */ \
|
|
|
|
|
case 10: \
|
|
|
|
|
hashv += ((unsigned) _hj_key[9] << 16); /* FALLTHROUGH */ \
|
|
|
|
|
case 9: \
|
|
|
|
|
hashv += ((unsigned) _hj_key[8] << 8); /* FALLTHROUGH */ \
|
|
|
|
|
case 8: \
|
|
|
|
|
_hj_j += ((unsigned) _hj_key[7] << 24); /* FALLTHROUGH */ \
|
|
|
|
|
case 7: \
|
|
|
|
|
_hj_j += ((unsigned) _hj_key[6] << 16); /* FALLTHROUGH */ \
|
|
|
|
|
case 6: \
|
|
|
|
|
_hj_j += ((unsigned) _hj_key[5] << 8); /* FALLTHROUGH */ \
|
|
|
|
|
case 5: \
|
|
|
|
|
_hj_j += _hj_key[4]; /* FALLTHROUGH */ \
|
|
|
|
|
case 4: \
|
|
|
|
|
_hj_i += ((unsigned) _hj_key[3] << 24); /* FALLTHROUGH */ \
|
|
|
|
|
case 3: \
|
|
|
|
|
_hj_i += ((unsigned) _hj_key[2] << 16); /* FALLTHROUGH */ \
|
|
|
|
|
case 2: \
|
|
|
|
|
_hj_i += ((unsigned) _hj_key[1] << 8); /* FALLTHROUGH */ \
|
|
|
|
|
case 1: \
|
|
|
|
|
_hj_i += _hj_key[0]; \
|
|
|
|
|
} \
|
|
|
|
|
HASH_JEN_MIX(_hj_i, _hj_j, hashv); \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
/* The Paul Hsieh hash function */
|
|
|
|
|
#undef get16bits
|
2022-09-29 15:34:44 +02:00
|
|
|
#if (defined(__GNUC__) && defined(__i386__)) || defined(__WATCOMC__) \
|
|
|
|
|
|| defined(_MSC_VER) || defined(__BORLANDC__) || defined(__TURBOC__)
|
2021-07-29 17:46:25 +02:00
|
|
|
#define get16bits(d) (*((const uint16_t *) (d)))
|
|
|
|
|
#endif
|
|
|
|
|
|
2022-09-29 15:34:44 +02:00
|
|
|
#if !defined(get16bits)
|
|
|
|
|
#define get16bits(d) ((((uint32_t) (((const uint8_t *) (d))[1])) << 8) \
|
|
|
|
|
+ (uint32_t) (((const uint8_t *) (d))[0]))
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_SFH(key, keylen, hashv) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned const char *_sfh_key = (unsigned const char *) (key); \
|
|
|
|
|
uint32_t _sfh_tmp, _sfh_len = (uint32_t) keylen; \
|
|
|
|
|
\
|
|
|
|
|
unsigned _sfh_rem = _sfh_len & 3U; \
|
|
|
|
|
_sfh_len >>= 2; \
|
|
|
|
|
hashv = 0xcafebabeu; \
|
|
|
|
|
\
|
|
|
|
|
/* Main loop */ \
|
|
|
|
|
for (; _sfh_len > 0U; _sfh_len--) { \
|
|
|
|
|
hashv += get16bits(_sfh_key); \
|
|
|
|
|
_sfh_tmp = ((uint32_t) (get16bits(_sfh_key + 2)) << 11) ^ hashv; \
|
|
|
|
|
hashv = (hashv << 16) ^ _sfh_tmp; \
|
|
|
|
|
_sfh_key += 2U * sizeof(uint16_t); \
|
|
|
|
|
hashv += hashv >> 11; \
|
|
|
|
|
} \
|
|
|
|
|
\
|
|
|
|
|
/* Handle end cases */ \
|
|
|
|
|
switch (_sfh_rem) { \
|
|
|
|
|
case 3: \
|
|
|
|
|
hashv += get16bits(_sfh_key); \
|
|
|
|
|
hashv ^= hashv << 16; \
|
|
|
|
|
hashv ^= (uint32_t) (_sfh_key[sizeof(uint16_t)]) << 18; \
|
|
|
|
|
hashv += hashv >> 11; \
|
|
|
|
|
break; \
|
|
|
|
|
case 2: \
|
|
|
|
|
hashv += get16bits(_sfh_key); \
|
|
|
|
|
hashv ^= hashv << 11; \
|
|
|
|
|
hashv += hashv >> 17; \
|
|
|
|
|
break; \
|
|
|
|
|
case 1: \
|
|
|
|
|
hashv += *_sfh_key; \
|
|
|
|
|
hashv ^= hashv << 10; \
|
|
|
|
|
hashv += hashv >> 1; \
|
|
|
|
|
} \
|
|
|
|
|
\
|
|
|
|
|
/* Force "avalanching" of final 127 bits */ \
|
|
|
|
|
hashv ^= hashv << 3; \
|
|
|
|
|
hashv += hashv >> 5; \
|
|
|
|
|
hashv ^= hashv << 4; \
|
|
|
|
|
hashv += hashv >> 17; \
|
|
|
|
|
hashv ^= hashv << 25; \
|
|
|
|
|
hashv += hashv >> 6; \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
#ifdef HASH_USING_NO_STRICT_ALIASING
|
|
|
|
|
/* The MurmurHash exploits some CPU's (x86,x86_64) tolerance for unaligned reads.
|
|
|
|
|
* For other types of CPU's (e.g. Sparc) an unaligned read causes a bus error.
|
|
|
|
|
* MurmurHash uses the faster approach only on CPU's where we know it's safe.
|
|
|
|
|
*
|
|
|
|
|
* Note the preprocessor built-in defines can be emitted using:
|
|
|
|
|
*
|
|
|
|
|
* gcc -m64 -dM -E - < /dev/null (on gcc)
|
|
|
|
|
* cc -## a.c (where a.c is a simple test file) (Sun Studio)
|
|
|
|
|
*/
|
2022-09-29 15:34:44 +02:00
|
|
|
#if (defined(__i386__) || defined(__x86_64__) || defined(_M_IX86))
|
|
|
|
|
#define MUR_GETBLOCK(p, i) p[i]
|
2021-07-29 17:46:25 +02:00
|
|
|
#else /* non intel */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define MUR_PLUS0_ALIGNED(p) (((unsigned long) p & 3UL) == 0UL)
|
|
|
|
|
#define MUR_PLUS1_ALIGNED(p) (((unsigned long) p & 3UL) == 1UL)
|
|
|
|
|
#define MUR_PLUS2_ALIGNED(p) (((unsigned long) p & 3UL) == 2UL)
|
|
|
|
|
#define MUR_PLUS3_ALIGNED(p) (((unsigned long) p & 3UL) == 3UL)
|
|
|
|
|
#define WP(p) ((uint32_t *) ((unsigned long) (p) & ~3UL))
|
2021-07-29 17:46:25 +02:00
|
|
|
#if (defined(__BIG_ENDIAN__) || defined(SPARC) || defined(__ppc__) || defined(__ppc64__))
|
2022-09-29 15:34:44 +02:00
|
|
|
#define MUR_THREE_ONE(p) ((((*WP(p)) & 0x00ffffff) << 8) | (((*(WP(p) + 1)) & 0xff000000) >> 24))
|
|
|
|
|
#define MUR_TWO_TWO(p) ((((*WP(p)) & 0x0000ffff) << 16) | (((*(WP(p) + 1)) & 0xffff0000) >> 16))
|
|
|
|
|
#define MUR_ONE_THREE(p) ((((*WP(p)) & 0x000000ff) << 24) | (((*(WP(p) + 1)) & 0xffffff00) >> 8))
|
2021-07-29 17:46:25 +02:00
|
|
|
#else /* assume little endian non-intel */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define MUR_THREE_ONE(p) ((((*WP(p)) & 0xffffff00) >> 8) | (((*(WP(p) + 1)) & 0x000000ff) << 24))
|
|
|
|
|
#define MUR_TWO_TWO(p) ((((*WP(p)) & 0xffff0000) >> 16) | (((*(WP(p) + 1)) & 0x0000ffff) << 16))
|
|
|
|
|
#define MUR_ONE_THREE(p) ((((*WP(p)) & 0xff000000) >> 24) | (((*(WP(p) + 1)) & 0x00ffffff) << 8))
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
2022-09-29 15:34:44 +02:00
|
|
|
#define MUR_GETBLOCK(p, i) (MUR_PLUS0_ALIGNED(p) ? ((p)[i]) : (MUR_PLUS1_ALIGNED(p) ? MUR_THREE_ONE(p) : (MUR_PLUS2_ALIGNED(p) ? MUR_TWO_TWO(p) : MUR_ONE_THREE(p))))
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
2022-09-29 15:34:44 +02:00
|
|
|
#define MUR_ROTL32(x, r) (((x) << (r)) | ((x) >> (32 - (r))))
|
|
|
|
|
#define MUR_FMIX(_h) \
|
|
|
|
|
do { \
|
|
|
|
|
_h ^= _h >> 16; \
|
|
|
|
|
_h *= 0x85ebca6bu; \
|
|
|
|
|
_h ^= _h >> 13; \
|
|
|
|
|
_h *= 0xc2b2ae35u; \
|
|
|
|
|
_h ^= _h >> 16; \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_MUR(key, keylen, hashv) \
|
|
|
|
|
do { \
|
|
|
|
|
const uint8_t *_mur_data = (const uint8_t *) (key); \
|
|
|
|
|
const int _mur_nblocks = (int) (keylen) / 4; \
|
|
|
|
|
uint32_t _mur_h1 = 0xf88D5353u; \
|
|
|
|
|
uint32_t _mur_c1 = 0xcc9e2d51u; \
|
|
|
|
|
uint32_t _mur_c2 = 0x1b873593u; \
|
|
|
|
|
uint32_t _mur_k1 = 0; \
|
|
|
|
|
const uint8_t *_mur_tail; \
|
|
|
|
|
const uint32_t *_mur_blocks = (const uint32_t *) (_mur_data + (_mur_nblocks * 4)); \
|
|
|
|
|
int _mur_i; \
|
|
|
|
|
for (_mur_i = -_mur_nblocks; _mur_i != 0; _mur_i++) { \
|
|
|
|
|
_mur_k1 = MUR_GETBLOCK(_mur_blocks, _mur_i); \
|
|
|
|
|
_mur_k1 *= _mur_c1; \
|
|
|
|
|
_mur_k1 = MUR_ROTL32(_mur_k1, 15); \
|
|
|
|
|
_mur_k1 *= _mur_c2; \
|
|
|
|
|
\
|
|
|
|
|
_mur_h1 ^= _mur_k1; \
|
|
|
|
|
_mur_h1 = MUR_ROTL32(_mur_h1, 13); \
|
|
|
|
|
_mur_h1 = (_mur_h1 * 5U) + 0xe6546b64u; \
|
|
|
|
|
} \
|
|
|
|
|
_mur_tail = (const uint8_t *) (_mur_data + (_mur_nblocks * 4)); \
|
|
|
|
|
_mur_k1 = 0; \
|
|
|
|
|
switch ((keylen) &3U) { \
|
|
|
|
|
case 0: \
|
|
|
|
|
break; \
|
|
|
|
|
case 3: \
|
|
|
|
|
_mur_k1 ^= (uint32_t) _mur_tail[2] << 16; /* FALLTHROUGH */ \
|
|
|
|
|
case 2: \
|
|
|
|
|
_mur_k1 ^= (uint32_t) _mur_tail[1] << 8; /* FALLTHROUGH */ \
|
|
|
|
|
case 1: \
|
|
|
|
|
_mur_k1 ^= (uint32_t) _mur_tail[0]; \
|
|
|
|
|
_mur_k1 *= _mur_c1; \
|
|
|
|
|
_mur_k1 = MUR_ROTL32(_mur_k1, 15); \
|
|
|
|
|
_mur_k1 *= _mur_c2; \
|
|
|
|
|
_mur_h1 ^= _mur_k1; \
|
|
|
|
|
} \
|
|
|
|
|
_mur_h1 ^= (uint32_t) (keylen); \
|
|
|
|
|
MUR_FMIX(_mur_h1); \
|
|
|
|
|
hashv = _mur_h1; \
|
|
|
|
|
} while (0)
|
|
|
|
|
#endif /* HASH_USING_NO_STRICT_ALIASING */
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
/* iterate over items in a known bucket to find desired item */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_FIND_IN_BKT(tbl, hh, head, keyptr, keylen_in, hashval, out) \
|
|
|
|
|
do { \
|
|
|
|
|
if ((head).hh_head != NULL) { \
|
|
|
|
|
DECLTYPE_ASSIGN(out, ELMT_FROM_HH(tbl, (head).hh_head)); \
|
|
|
|
|
} else { \
|
|
|
|
|
(out) = NULL; \
|
|
|
|
|
} \
|
|
|
|
|
while ((out) != NULL) { \
|
|
|
|
|
if ((out)->hh.hashv == (hashval) && (out)->hh.keylen == (keylen_in)) { \
|
|
|
|
|
if (HASH_KEYCMP((out)->hh.key, keyptr, keylen_in) == 0) { \
|
|
|
|
|
break; \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
if ((out)->hh.hh_next != NULL) { \
|
|
|
|
|
DECLTYPE_ASSIGN(out, ELMT_FROM_HH(tbl, (out)->hh.hh_next)); \
|
|
|
|
|
} else { \
|
|
|
|
|
(out) = NULL; \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
/* add an item to a bucket */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_ADD_TO_BKT(head, hh, addhh, oomed) \
|
|
|
|
|
do { \
|
|
|
|
|
UT_hash_bucket *_ha_head = &(head); \
|
|
|
|
|
_ha_head->count++; \
|
|
|
|
|
(addhh)->hh_next = _ha_head->hh_head; \
|
|
|
|
|
(addhh)->hh_prev = NULL; \
|
|
|
|
|
if (_ha_head->hh_head != NULL) { \
|
|
|
|
|
_ha_head->hh_head->hh_prev = (addhh); \
|
|
|
|
|
} \
|
|
|
|
|
_ha_head->hh_head = (addhh); \
|
|
|
|
|
if ((_ha_head->count >= ((_ha_head->expand_mult + 1U) * HASH_BKT_CAPACITY_THRESH)) \
|
|
|
|
|
&& !(addhh)->tbl->noexpand) { \
|
|
|
|
|
HASH_EXPAND_BUCKETS(addhh, (addhh)->tbl, oomed); \
|
|
|
|
|
IF_HASH_NONFATAL_OOM( \
|
|
|
|
|
if (oomed) { \
|
|
|
|
|
HASH_DEL_IN_BKT(head, addhh); \
|
|
|
|
|
}) \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
/* remove an item from a given bucket */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_DEL_IN_BKT(head, delhh) \
|
|
|
|
|
do { \
|
|
|
|
|
UT_hash_bucket *_hd_head = &(head); \
|
|
|
|
|
_hd_head->count--; \
|
|
|
|
|
if (_hd_head->hh_head == (delhh)) { \
|
|
|
|
|
_hd_head->hh_head = (delhh)->hh_next; \
|
|
|
|
|
} \
|
|
|
|
|
if ((delhh)->hh_prev) { \
|
|
|
|
|
(delhh)->hh_prev->hh_next = (delhh)->hh_next; \
|
|
|
|
|
} \
|
|
|
|
|
if ((delhh)->hh_next) { \
|
|
|
|
|
(delhh)->hh_next->hh_prev = (delhh)->hh_prev; \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
/* Bucket expansion has the effect of doubling the number of buckets
|
|
|
|
|
* and redistributing the items into the new buckets. Ideally the
|
|
|
|
|
* items will distribute more or less evenly into the new buckets
|
|
|
|
|
* (the extent to which this is true is a measure of the quality of
|
|
|
|
|
* the hash function as it applies to the key domain).
|
|
|
|
|
*
|
|
|
|
|
* With the items distributed into more buckets, the chain length
|
|
|
|
|
* (item count) in each bucket is reduced. Thus by expanding buckets
|
|
|
|
|
* the hash keeps a bound on the chain length. This bounded chain
|
|
|
|
|
* length is the essence of how a hash provides constant time lookup.
|
|
|
|
|
*
|
|
|
|
|
* The calculation of tbl->ideal_chain_maxlen below deserves some
|
|
|
|
|
* explanation. First, keep in mind that we're calculating the ideal
|
|
|
|
|
* maximum chain length based on the *new* (doubled) bucket count.
|
|
|
|
|
* In fractions this is just n/b (n=number of items,b=new num buckets).
|
|
|
|
|
* Since the ideal chain length is an integer, we want to calculate
|
|
|
|
|
* ceil(n/b). We don't depend on floating point arithmetic in this
|
|
|
|
|
* hash, so to calculate ceil(n/b) with integers we could write
|
|
|
|
|
*
|
|
|
|
|
* ceil(n/b) = (n/b) + ((n%b)?1:0)
|
|
|
|
|
*
|
|
|
|
|
* and in fact a previous version of this hash did just that.
|
|
|
|
|
* But now we have improved things a bit by recognizing that b is
|
|
|
|
|
* always a power of two. We keep its base 2 log handy (call it lb),
|
|
|
|
|
* so now we can write this with a bit shift and logical AND:
|
|
|
|
|
*
|
|
|
|
|
* ceil(n/b) = (n>>lb) + ( (n & (b-1)) ? 1:0)
|
|
|
|
|
*
|
|
|
|
|
*/
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_EXPAND_BUCKETS(hh, tbl, oomed) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _he_bkt; \
|
|
|
|
|
unsigned _he_bkt_i; \
|
|
|
|
|
struct UT_hash_handle *_he_thh, *_he_hh_nxt; \
|
|
|
|
|
UT_hash_bucket *_he_new_buckets, *_he_newbkt; \
|
|
|
|
|
_he_new_buckets = (UT_hash_bucket *) uthash_malloc( \
|
|
|
|
|
2UL * (tbl)->num_buckets * sizeof(struct UT_hash_bucket)); \
|
|
|
|
|
if (!_he_new_buckets) { \
|
|
|
|
|
HASH_RECORD_OOM(oomed); \
|
|
|
|
|
} else { \
|
|
|
|
|
uthash_bzero(_he_new_buckets, \
|
|
|
|
|
2UL * (tbl)->num_buckets * sizeof(struct UT_hash_bucket)); \
|
|
|
|
|
(tbl)->ideal_chain_maxlen = \
|
|
|
|
|
((tbl)->num_items >> ((tbl)->log2_num_buckets + 1U)) + ((((tbl)->num_items & (((tbl)->num_buckets * 2U) - 1U)) != 0U) ? 1U : 0U); \
|
|
|
|
|
(tbl)->nonideal_items = 0; \
|
|
|
|
|
for (_he_bkt_i = 0; _he_bkt_i < (tbl)->num_buckets; _he_bkt_i++) { \
|
|
|
|
|
_he_thh = (tbl)->buckets[_he_bkt_i].hh_head; \
|
|
|
|
|
while (_he_thh != NULL) { \
|
|
|
|
|
_he_hh_nxt = _he_thh->hh_next; \
|
|
|
|
|
HASH_TO_BKT(_he_thh->hashv, (tbl)->num_buckets * 2U, _he_bkt); \
|
|
|
|
|
_he_newbkt = &(_he_new_buckets[_he_bkt]); \
|
|
|
|
|
if (++(_he_newbkt->count) > (tbl)->ideal_chain_maxlen) { \
|
|
|
|
|
(tbl)->nonideal_items++; \
|
|
|
|
|
if (_he_newbkt->count > _he_newbkt->expand_mult * (tbl)->ideal_chain_maxlen) { \
|
|
|
|
|
_he_newbkt->expand_mult++; \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
_he_thh->hh_prev = NULL; \
|
|
|
|
|
_he_thh->hh_next = _he_newbkt->hh_head; \
|
|
|
|
|
if (_he_newbkt->hh_head != NULL) { \
|
|
|
|
|
_he_newbkt->hh_head->hh_prev = _he_thh; \
|
|
|
|
|
} \
|
|
|
|
|
_he_newbkt->hh_head = _he_thh; \
|
|
|
|
|
_he_thh = _he_hh_nxt; \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
uthash_free((tbl)->buckets, (tbl)->num_buckets * sizeof(struct UT_hash_bucket)); \
|
|
|
|
|
(tbl)->num_buckets *= 2U; \
|
|
|
|
|
(tbl)->log2_num_buckets++; \
|
|
|
|
|
(tbl)->buckets = _he_new_buckets; \
|
|
|
|
|
(tbl)->ineff_expands = ((tbl)->nonideal_items > ((tbl)->num_items >> 1)) ? ((tbl)->ineff_expands + 1U) : 0U; \
|
|
|
|
|
if ((tbl)->ineff_expands > 1U) { \
|
|
|
|
|
(tbl)->noexpand = 1; \
|
|
|
|
|
uthash_noexpand_fyi(tbl); \
|
|
|
|
|
} \
|
|
|
|
|
uthash_expand_fyi(tbl); \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
/* This is an adaptation of Simon Tatham's O(n log(n)) mergesort */
|
|
|
|
|
/* Note that HASH_SORT assumes the hash handle name to be hh.
|
|
|
|
|
* HASH_SRT was added to allow the hash handle name to be passed in. */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_SORT(head, cmpfcn) HASH_SRT(hh, head, cmpfcn)
|
|
|
|
|
#define HASH_SRT(hh, head, cmpfcn) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _hs_i; \
|
|
|
|
|
unsigned _hs_looping, _hs_nmerges, _hs_insize, _hs_psize, _hs_qsize; \
|
|
|
|
|
struct UT_hash_handle *_hs_p, *_hs_q, *_hs_e, *_hs_list, *_hs_tail; \
|
|
|
|
|
if (head != NULL) { \
|
|
|
|
|
_hs_insize = 1; \
|
|
|
|
|
_hs_looping = 1; \
|
|
|
|
|
_hs_list = &((head)->hh); \
|
|
|
|
|
while (_hs_looping != 0U) { \
|
|
|
|
|
_hs_p = _hs_list; \
|
|
|
|
|
_hs_list = NULL; \
|
|
|
|
|
_hs_tail = NULL; \
|
|
|
|
|
_hs_nmerges = 0; \
|
|
|
|
|
while (_hs_p != NULL) { \
|
|
|
|
|
_hs_nmerges++; \
|
|
|
|
|
_hs_q = _hs_p; \
|
|
|
|
|
_hs_psize = 0; \
|
|
|
|
|
for (_hs_i = 0; _hs_i < _hs_insize; ++_hs_i) { \
|
|
|
|
|
_hs_psize++; \
|
|
|
|
|
_hs_q = ((_hs_q->next != NULL) ? HH_FROM_ELMT((head)->hh.tbl, _hs_q->next) : NULL); \
|
|
|
|
|
if (_hs_q == NULL) { \
|
|
|
|
|
break; \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
_hs_qsize = _hs_insize; \
|
|
|
|
|
while ((_hs_psize != 0U) || ((_hs_qsize != 0U) && (_hs_q != NULL))) { \
|
|
|
|
|
if (_hs_psize == 0U) { \
|
|
|
|
|
_hs_e = _hs_q; \
|
|
|
|
|
_hs_q = ((_hs_q->next != NULL) ? HH_FROM_ELMT((head)->hh.tbl, _hs_q->next) : NULL); \
|
|
|
|
|
_hs_qsize--; \
|
|
|
|
|
} else if ((_hs_qsize == 0U) || (_hs_q == NULL)) { \
|
|
|
|
|
_hs_e = _hs_p; \
|
|
|
|
|
if (_hs_p != NULL) { \
|
|
|
|
|
_hs_p = ((_hs_p->next != NULL) ? HH_FROM_ELMT((head)->hh.tbl, _hs_p->next) : NULL); \
|
|
|
|
|
} \
|
|
|
|
|
_hs_psize--; \
|
|
|
|
|
} else if ((cmpfcn( \
|
|
|
|
|
DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl, _hs_p)), \
|
|
|
|
|
DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl, _hs_q)))) \
|
|
|
|
|
<= 0) { \
|
|
|
|
|
_hs_e = _hs_p; \
|
|
|
|
|
if (_hs_p != NULL) { \
|
|
|
|
|
_hs_p = ((_hs_p->next != NULL) ? HH_FROM_ELMT((head)->hh.tbl, _hs_p->next) : NULL); \
|
|
|
|
|
} \
|
|
|
|
|
_hs_psize--; \
|
|
|
|
|
} else { \
|
|
|
|
|
_hs_e = _hs_q; \
|
|
|
|
|
_hs_q = ((_hs_q->next != NULL) ? HH_FROM_ELMT((head)->hh.tbl, _hs_q->next) : NULL); \
|
|
|
|
|
_hs_qsize--; \
|
|
|
|
|
} \
|
|
|
|
|
if (_hs_tail != NULL) { \
|
|
|
|
|
_hs_tail->next = ((_hs_e != NULL) ? ELMT_FROM_HH((head)->hh.tbl, _hs_e) : NULL); \
|
|
|
|
|
} else { \
|
|
|
|
|
_hs_list = _hs_e; \
|
|
|
|
|
} \
|
|
|
|
|
if (_hs_e != NULL) { \
|
|
|
|
|
_hs_e->prev = ((_hs_tail != NULL) ? ELMT_FROM_HH((head)->hh.tbl, _hs_tail) : NULL); \
|
|
|
|
|
} \
|
|
|
|
|
_hs_tail = _hs_e; \
|
|
|
|
|
} \
|
|
|
|
|
_hs_p = _hs_q; \
|
|
|
|
|
} \
|
|
|
|
|
if (_hs_tail != NULL) { \
|
|
|
|
|
_hs_tail->next = NULL; \
|
|
|
|
|
} \
|
|
|
|
|
if (_hs_nmerges <= 1U) { \
|
|
|
|
|
_hs_looping = 0; \
|
|
|
|
|
(head)->hh.tbl->tail = _hs_tail; \
|
|
|
|
|
DECLTYPE_ASSIGN(head, ELMT_FROM_HH((head)->hh.tbl, _hs_list)); \
|
|
|
|
|
} \
|
|
|
|
|
_hs_insize *= 2U; \
|
|
|
|
|
} \
|
|
|
|
|
HASH_FSCK(hh, head, "HASH_SRT"); \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
/* This function selects items from one hash into another hash.
|
|
|
|
|
* The end result is that the selected items have dual presence
|
|
|
|
|
* in both hashes. There is no copy of the items made; rather
|
|
|
|
|
* they are added into the new hash through a secondary hash
|
|
|
|
|
* hash handle that must be present in the structure. */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_SELECT(hh_dst, dst, hh_src, src, cond) \
|
|
|
|
|
do { \
|
|
|
|
|
unsigned _src_bkt, _dst_bkt; \
|
|
|
|
|
void *_last_elt = NULL, *_elt; \
|
|
|
|
|
UT_hash_handle *_src_hh, *_dst_hh, *_last_elt_hh = NULL; \
|
|
|
|
|
ptrdiff_t _dst_hho = ((char *) (&(dst)->hh_dst) - (char *) (dst)); \
|
|
|
|
|
if ((src) != NULL) { \
|
|
|
|
|
for (_src_bkt = 0; _src_bkt < (src)->hh_src.tbl->num_buckets; _src_bkt++) { \
|
|
|
|
|
for (_src_hh = (src)->hh_src.tbl->buckets[_src_bkt].hh_head; \
|
|
|
|
|
_src_hh != NULL; \
|
|
|
|
|
_src_hh = _src_hh->hh_next) { \
|
|
|
|
|
_elt = ELMT_FROM_HH((src)->hh_src.tbl, _src_hh); \
|
|
|
|
|
if (cond(_elt)) { \
|
|
|
|
|
IF_HASH_NONFATAL_OOM(int _hs_oomed = 0;) \
|
|
|
|
|
_dst_hh = (UT_hash_handle *) (((char *) _elt) + _dst_hho); \
|
|
|
|
|
_dst_hh->key = _src_hh->key; \
|
|
|
|
|
_dst_hh->keylen = _src_hh->keylen; \
|
|
|
|
|
_dst_hh->hashv = _src_hh->hashv; \
|
|
|
|
|
_dst_hh->prev = _last_elt; \
|
|
|
|
|
_dst_hh->next = NULL; \
|
|
|
|
|
if (_last_elt_hh != NULL) { \
|
|
|
|
|
_last_elt_hh->next = _elt; \
|
|
|
|
|
} \
|
|
|
|
|
if ((dst) == NULL) { \
|
|
|
|
|
DECLTYPE_ASSIGN(dst, _elt); \
|
|
|
|
|
HASH_MAKE_TABLE(hh_dst, dst, _hs_oomed); \
|
|
|
|
|
IF_HASH_NONFATAL_OOM( \
|
|
|
|
|
if (_hs_oomed) { \
|
|
|
|
|
uthash_nonfatal_oom(_elt); \
|
|
|
|
|
(dst) = NULL; \
|
|
|
|
|
continue; \
|
|
|
|
|
}) \
|
|
|
|
|
} else { \
|
|
|
|
|
_dst_hh->tbl = (dst)->hh_dst.tbl; \
|
|
|
|
|
} \
|
|
|
|
|
HASH_TO_BKT(_dst_hh->hashv, _dst_hh->tbl->num_buckets, _dst_bkt); \
|
|
|
|
|
HASH_ADD_TO_BKT(_dst_hh->tbl->buckets[_dst_bkt], hh_dst, _dst_hh, _hs_oomed); \
|
|
|
|
|
(dst)->hh_dst.tbl->num_items++; \
|
|
|
|
|
IF_HASH_NONFATAL_OOM( \
|
|
|
|
|
if (_hs_oomed) { \
|
|
|
|
|
HASH_ROLLBACK_BKT(hh_dst, dst, _dst_hh); \
|
|
|
|
|
HASH_DELETE_HH(hh_dst, dst, _dst_hh); \
|
|
|
|
|
_dst_hh->tbl = NULL; \
|
|
|
|
|
uthash_nonfatal_oom(_elt); \
|
|
|
|
|
continue; \
|
|
|
|
|
}) \
|
|
|
|
|
HASH_BLOOM_ADD(_dst_hh->tbl, _dst_hh->hashv); \
|
|
|
|
|
_last_elt = _elt; \
|
|
|
|
|
_last_elt_hh = _dst_hh; \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
} \
|
|
|
|
|
HASH_FSCK(hh_dst, dst, "HASH_SELECT"); \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_CLEAR(hh, head) \
|
|
|
|
|
do { \
|
|
|
|
|
if ((head) != NULL) { \
|
|
|
|
|
HASH_BLOOM_FREE((head)->hh.tbl); \
|
|
|
|
|
uthash_free((head)->hh.tbl->buckets, \
|
|
|
|
|
(head)->hh.tbl->num_buckets * sizeof(struct UT_hash_bucket)); \
|
|
|
|
|
uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \
|
|
|
|
|
(head) = NULL; \
|
|
|
|
|
} \
|
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
#define HASH_OVERHEAD(hh, head) \
|
|
|
|
|
(((head) != NULL) ? ( \
|
|
|
|
|
(size_t) (((head)->hh.tbl->num_items * sizeof(UT_hash_handle)) + ((head)->hh.tbl->num_buckets * sizeof(UT_hash_bucket)) + sizeof(UT_hash_table) + (HASH_BLOOM_BYTELEN))) \
|
|
|
|
|
: 0U)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
#ifdef NO_DECLTYPE
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_ITER(hh, head, el, tmp) \
|
|
|
|
|
for (((el) = (head)), ((*(char **) (&(tmp))) = (char *) ((head != NULL) ? (head)->hh.next : NULL)); \
|
|
|
|
|
(el) != NULL; ((el) = (tmp)), ((*(char **) (&(tmp))) = (char *) ((tmp != NULL) ? (tmp)->hh.next : NULL)))
|
2021-07-29 17:46:25 +02:00
|
|
|
#else
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_ITER(hh, head, el, tmp) \
|
|
|
|
|
for (((el) = (head)), ((tmp) = DECLTYPE(el)((head != NULL) ? (head)->hh.next : NULL)); \
|
|
|
|
|
(el) != NULL; ((el) = (tmp)), ((tmp) = DECLTYPE(el)((tmp != NULL) ? (tmp)->hh.next : NULL)))
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* obtain a count of items in the hash */
|
2022-09-29 15:34:44 +02:00
|
|
|
#define HASH_COUNT(head) HASH_CNT(hh, head)
|
|
|
|
|
#define HASH_CNT(hh, head) ((head != NULL) ? ((head)->hh.tbl->num_items) : 0U)
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
typedef struct UT_hash_bucket {
|
2022-09-29 15:34:44 +02:00
|
|
|
struct UT_hash_handle *hh_head;
|
|
|
|
|
unsigned count;
|
|
|
|
|
|
|
|
|
|
/* expand_mult is normally set to 0. In this situation, the max chain length
|
|
|
|
|
* threshold is enforced at its default value, HASH_BKT_CAPACITY_THRESH. (If
|
|
|
|
|
* the bucket's chain exceeds this length, bucket expansion is triggered).
|
|
|
|
|
* However, setting expand_mult to a non-zero value delays bucket expansion
|
|
|
|
|
* (that would be triggered by additions to this particular bucket)
|
|
|
|
|
* until its chain length reaches a *multiple* of HASH_BKT_CAPACITY_THRESH.
|
|
|
|
|
* (The multiplier is simply expand_mult+1). The whole idea of this
|
|
|
|
|
* multiplier is to reduce bucket expansions, since they are expensive, in
|
|
|
|
|
* situations where we know that a particular bucket tends to be overused.
|
|
|
|
|
* It is better to let its chain length grow to a longer yet-still-bounded
|
|
|
|
|
* value, than to do an O(n) bucket expansion too often.
|
|
|
|
|
*/
|
|
|
|
|
unsigned expand_mult;
|
2021-07-29 17:46:25 +02:00
|
|
|
|
|
|
|
|
} UT_hash_bucket;
|
|
|
|
|
|
|
|
|
|
/* random signature used only to find hash tables in external analysis */
|
|
|
|
|
#define HASH_SIGNATURE 0xa0111fe1u
|
|
|
|
|
#define HASH_BLOOM_SIGNATURE 0xb12220f2u
|
|
|
|
|
|
|
|
|
|
typedef struct UT_hash_table {
|
2022-09-29 15:34:44 +02:00
|
|
|
UT_hash_bucket *buckets;
|
|
|
|
|
unsigned num_buckets, log2_num_buckets;
|
|
|
|
|
unsigned num_items;
|
|
|
|
|
struct UT_hash_handle *tail; /* tail hh in app order, for fast append */
|
|
|
|
|
ptrdiff_t hho; /* hash handle offset (byte pos of hash handle in element */
|
|
|
|
|
|
|
|
|
|
/* in an ideal situation (all buckets used equally), no bucket would have
|
|
|
|
|
* more than ceil(#items/#buckets) items. that's the ideal chain length. */
|
|
|
|
|
unsigned ideal_chain_maxlen;
|
|
|
|
|
|
|
|
|
|
/* nonideal_items is the number of items in the hash whose chain position
|
|
|
|
|
* exceeds the ideal chain maxlen. these items pay the penalty for an uneven
|
|
|
|
|
* hash distribution; reaching them in a chain traversal takes >ideal steps */
|
|
|
|
|
unsigned nonideal_items;
|
|
|
|
|
|
|
|
|
|
/* ineffective expands occur when a bucket doubling was performed, but
|
|
|
|
|
* afterward, more than half the items in the hash had nonideal chain
|
|
|
|
|
* positions. If this happens on two consecutive expansions we inhibit any
|
|
|
|
|
* further expansion, as it's not helping; this happens when the hash
|
|
|
|
|
* function isn't a good fit for the key domain. When expansion is inhibited
|
|
|
|
|
* the hash will still work, albeit no longer in constant time. */
|
|
|
|
|
unsigned ineff_expands, noexpand;
|
|
|
|
|
|
|
|
|
|
uint32_t signature; /* used only to find hash tables in external analysis */
|
2021-07-29 17:46:25 +02:00
|
|
|
#ifdef HASH_BLOOM
|
2022-09-29 15:34:44 +02:00
|
|
|
uint32_t bloom_sig; /* used only to test bloom exists in external analysis */
|
|
|
|
|
uint8_t *bloom_bv;
|
|
|
|
|
uint8_t bloom_nbits;
|
2021-07-29 17:46:25 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
} UT_hash_table;
|
|
|
|
|
|
|
|
|
|
typedef struct UT_hash_handle {
|
2022-09-29 15:34:44 +02:00
|
|
|
struct UT_hash_table *tbl;
|
|
|
|
|
void *prev; /* prev element in app order */
|
|
|
|
|
void *next; /* next element in app order */
|
|
|
|
|
struct UT_hash_handle *hh_prev; /* previous hh in bucket order */
|
|
|
|
|
struct UT_hash_handle *hh_next; /* next hh in bucket order */
|
|
|
|
|
void *key; /* ptr to enclosing struct's key */
|
|
|
|
|
unsigned keylen; /* enclosing struct's key len */
|
|
|
|
|
unsigned hashv; /* result of hash-fcn(key) */
|
2021-07-29 17:46:25 +02:00
|
|
|
} UT_hash_handle;
|
|
|
|
|
|
|
|
|
|
#endif /* UTHASH_H */
|
