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gerrit.openbmc.org / openbmc / owners-plugin-test / 1a4b7ee28bf7413af6513fb45ad0d0736048f866 / . / meta-openembedded / meta-networking / recipes-connectivity / mosquitto / files / 0002-uthash-remove-in-tree-version.patch
blob: c89dfe6bef4837a59cac24bc13b8629d7fb95082 [file] [log] [blame]
Brad Bishop316dfdd2018-06-25 12:45:53 -0400[diff] [blame]1From d9aeef8d95a325942cc92f4d72415771d75d904c Mon Sep 17 00:00:00 2001
2From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <andre.draszik@jci.com>
3Date: Tue, 12 Apr 2016 13:05:10 +0100
4Subject: [PATCH 2/2] uthash: remove in-tree version
5MIME-Version: 1.0
6Content-Type: text/plain; charset=UTF-8
7Content-Transfer-Encoding: 8bit
8
9We don't need it as we want to use the version provided by
10meta-oe instead.
11
12Upstream-Status: Inappropriate [embedded-specific]
13Signed-off-by: André Draszik <andre.draszik@jci.com>
14---
15 src/uthash.h | 948 -----------------------------------------------------------
16 1 file changed, 948 deletions(-)
17 delete mode 100644 src/uthash.h
18
19diff --git a/src/uthash.h b/src/uthash.h
20deleted file mode 100644
21index 915a825..0000000
22--- a/src/uthash.h
23+++ /dev/null
24@@ -1,948 +0,0 @@
25-/*
26-Copyright (c) 2003-2013, Troy D. Hanson http://troydhanson.github.com/uthash/
27-All rights reserved.
28-
29-Redistribution and use in source and binary forms, with or without
30-modification, are permitted provided that the following conditions are met:
31-
32- * Redistributions of source code must retain the above copyright
33- notice, this list of conditions and the following disclaimer.
34-
35-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
36-IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
37-TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
38-PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
39-OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
40-EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
41-PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
42-PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
43-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
44-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
45-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
46-*/
47-
48-#ifndef UTHASH_H
49-#define UTHASH_H
50-
51-#include <string.h> /* memcmp,strlen */
52-#include <stddef.h> /* ptrdiff_t */
53-#include <stdlib.h> /* exit() */
54-
55-/* These macros use decltype or the earlier __typeof GNU extension.
56- As decltype is only available in newer compilers (VS2010 or gcc 4.3+
57- when compiling c++ source) this code uses whatever method is needed
58- or, for VS2008 where neither is available, uses casting workarounds. */
59-#ifdef _MSC_VER /* MS compiler */
60-#if _MSC_VER >= 1600 && defined(__cplusplus) /* VS2010 or newer in C++ mode */
61-#define DECLTYPE(x) (decltype(x))
62-#else /* VS2008 or older (or VS2010 in C mode) */
63-#define NO_DECLTYPE
64-#define DECLTYPE(x)
65-#endif
66-#else /* GNU, Sun and other compilers */
67-#define DECLTYPE(x) (__typeof(x))
68-#endif
69-
70-#ifdef NO_DECLTYPE
71-#define DECLTYPE_ASSIGN(dst,src) \
72-do { \
73- char **_da_dst = (char**)(&(dst)); \
74- *_da_dst = (char*)(src); \
75-} while(0)
76-#else
77-#define DECLTYPE_ASSIGN(dst,src) \
78-do { \
79- (dst) = DECLTYPE(dst)(src); \
80-} while(0)
81-#endif
82-
83-/* a number of the hash function use uint32_t which isn't defined on win32 */
84-#ifdef _MSC_VER
85-typedef unsigned int uint32_t;
86-typedef unsigned char uint8_t;
87-#else
88-#include <inttypes.h> /* uint32_t */
89-#endif
90-
91-#define UTHASH_VERSION 1.9.8
92-
93-#ifndef uthash_fatal
94-#define uthash_fatal(msg) exit(-1) /* fatal error (out of memory,etc) */
95-#endif
96-#ifndef uthash_malloc
97-#define uthash_malloc(sz) malloc(sz) /* malloc fcn */
98-#endif
99-#ifndef uthash_free
100-#define uthash_free(ptr,sz) free(ptr) /* free fcn */
101-#endif
102-
103-#ifndef uthash_noexpand_fyi
104-#define uthash_noexpand_fyi(tbl) /* can be defined to log noexpand */
105-#endif
106-#ifndef uthash_expand_fyi
107-#define uthash_expand_fyi(tbl) /* can be defined to log expands */
108-#endif
109-
110-/* initial number of buckets */
111-#define HASH_INITIAL_NUM_BUCKETS 32 /* initial number of buckets */
112-#define HASH_INITIAL_NUM_BUCKETS_LOG2 5 /* lg2 of initial number of buckets */
113-#define HASH_BKT_CAPACITY_THRESH 10 /* expand when bucket count reaches */
114-
115-/* calculate the element whose hash handle address is hhe */
116-#define ELMT_FROM_HH(tbl,hhp) ((void*)(((char*)(hhp)) - ((tbl)->hho)))
117-
118-#define HASH_FIND(hh,head,keyptr,keylen,out) \
119-do { \
120- unsigned _hf_bkt,_hf_hashv; \
121- out=NULL; \
122- if (head) { \
123- HASH_FCN(keyptr,keylen, (head)->hh.tbl->num_buckets, _hf_hashv, _hf_bkt); \
124- if (HASH_BLOOM_TEST((head)->hh.tbl, _hf_hashv)) { \
125- HASH_FIND_IN_BKT((head)->hh.tbl, hh, (head)->hh.tbl->buckets[ _hf_bkt ], \
126- keyptr,keylen,out); \
127- } \
128- } \
129-} while (0)
130-
131-#ifdef HASH_BLOOM
132-#define HASH_BLOOM_BITLEN (1ULL << HASH_BLOOM)
133-#define HASH_BLOOM_BYTELEN (HASH_BLOOM_BITLEN/8) + ((HASH_BLOOM_BITLEN%8) ? 1:0)
134-#define HASH_BLOOM_MAKE(tbl) \
135-do { \
136- (tbl)->bloom_nbits = HASH_BLOOM; \
137- (tbl)->bloom_bv = (uint8_t*)uthash_malloc(HASH_BLOOM_BYTELEN); \
138- if (!((tbl)->bloom_bv)) { uthash_fatal( "out of memory"); } \
139- memset((tbl)->bloom_bv, 0, HASH_BLOOM_BYTELEN); \
140- (tbl)->bloom_sig = HASH_BLOOM_SIGNATURE; \
141-} while (0)
142-
143-#define HASH_BLOOM_FREE(tbl) \
144-do { \
145- uthash_free((tbl)->bloom_bv, HASH_BLOOM_BYTELEN); \
146-} while (0)
147-
148-#define HASH_BLOOM_BITSET(bv,idx) (bv[(idx)/8] |= (1U << ((idx)%8)))
149-#define HASH_BLOOM_BITTEST(bv,idx) (bv[(idx)/8] & (1U << ((idx)%8)))
150-
151-#define HASH_BLOOM_ADD(tbl,hashv) \
152- HASH_BLOOM_BITSET((tbl)->bloom_bv, (hashv & (uint32_t)((1ULL << (tbl)->bloom_nbits) - 1)))
153-
154-#define HASH_BLOOM_TEST(tbl,hashv) \
155- HASH_BLOOM_BITTEST((tbl)->bloom_bv, (hashv & (uint32_t)((1ULL << (tbl)->bloom_nbits) - 1)))
156-
157-#else
158-#define HASH_BLOOM_MAKE(tbl)
159-#define HASH_BLOOM_FREE(tbl)
160-#define HASH_BLOOM_ADD(tbl,hashv)
161-#define HASH_BLOOM_TEST(tbl,hashv) (1)
162-#define HASH_BLOOM_BYTELEN 0
163-#endif
164-
165-#define HASH_MAKE_TABLE(hh,head) \
166-do { \
167- (head)->hh.tbl = (UT_hash_table*)uthash_malloc( \
168- sizeof(UT_hash_table)); \
169- if (!((head)->hh.tbl)) { uthash_fatal( "out of memory"); } \
170- memset((head)->hh.tbl, 0, sizeof(UT_hash_table)); \
171- (head)->hh.tbl->tail = &((head)->hh); \
172- (head)->hh.tbl->num_buckets = HASH_INITIAL_NUM_BUCKETS; \
173- (head)->hh.tbl->log2_num_buckets = HASH_INITIAL_NUM_BUCKETS_LOG2; \
174- (head)->hh.tbl->hho = (char*)(&(head)->hh) - (char*)(head); \
175- (head)->hh.tbl->buckets = (UT_hash_bucket*)uthash_malloc( \
176- HASH_INITIAL_NUM_BUCKETS*sizeof(struct UT_hash_bucket)); \
177- if (! (head)->hh.tbl->buckets) { uthash_fatal( "out of memory"); } \
178- memset((head)->hh.tbl->buckets, 0, \
179- HASH_INITIAL_NUM_BUCKETS*sizeof(struct UT_hash_bucket)); \
180- HASH_BLOOM_MAKE((head)->hh.tbl); \
181- (head)->hh.tbl->signature = HASH_SIGNATURE; \
182-} while(0)
183-
184-#define HASH_ADD(hh,head,fieldname,keylen_in,add) \
185- HASH_ADD_KEYPTR(hh,head,&((add)->fieldname),keylen_in,add)
186-
187-#define HASH_REPLACE(hh,head,fieldname,keylen_in,add,replaced) \
188-do { \
189- replaced=NULL; \
190- HASH_FIND(hh,head,&((add)->fieldname),keylen_in,replaced); \
191- if (replaced!=NULL) { \
192- HASH_DELETE(hh,head,replaced); \
193- }; \
194- HASH_ADD(hh,head,fieldname,keylen_in,add); \
195-} while(0)
196-
197-#define HASH_ADD_KEYPTR(hh,head,keyptr,keylen_in,add) \
198-do { \
199- unsigned _ha_bkt; \
200- (add)->hh.next = NULL; \
201- (add)->hh.key = (char*)keyptr; \
202- (add)->hh.keylen = (unsigned)keylen_in; \
203- if (!(head)) { \
204- head = (add); \
205- (head)->hh.prev = NULL; \
206- HASH_MAKE_TABLE(hh,head); \
207- } else { \
208- (head)->hh.tbl->tail->next = (add); \
209- (add)->hh.prev = ELMT_FROM_HH((head)->hh.tbl, (head)->hh.tbl->tail); \
210- (head)->hh.tbl->tail = &((add)->hh); \
211- } \
212- (head)->hh.tbl->num_items++; \
213- (add)->hh.tbl = (head)->hh.tbl; \
214- HASH_FCN(keyptr,keylen_in, (head)->hh.tbl->num_buckets, \
215- (add)->hh.hashv, _ha_bkt); \
216- HASH_ADD_TO_BKT((head)->hh.tbl->buckets[_ha_bkt],&(add)->hh); \
217- HASH_BLOOM_ADD((head)->hh.tbl,(add)->hh.hashv); \
218- HASH_EMIT_KEY(hh,head,keyptr,keylen_in); \
219- HASH_FSCK(hh,head); \
220-} while(0)
221-
222-#define HASH_TO_BKT( hashv, num_bkts, bkt ) \
223-do { \
224- bkt = ((hashv) & ((num_bkts) - 1)); \
225-} while(0)
226-
227-/* delete "delptr" from the hash table.
228- * "the usual" patch-up process for the app-order doubly-linked-list.
229- * The use of _hd_hh_del below deserves special explanation.
230- * These used to be expressed using (delptr) but that led to a bug
231- * if someone used the same symbol for the head and deletee, like
232- * HASH_DELETE(hh,users,users);
233- * We want that to work, but by changing the head (users) below
234- * we were forfeiting our ability to further refer to the deletee (users)
235- * in the patch-up process. Solution: use scratch space to
236- * copy the deletee pointer, then the latter references are via that
237- * scratch pointer rather than through the repointed (users) symbol.
238- */
239-#define HASH_DELETE(hh,head,delptr) \
240-do { \
241- unsigned _hd_bkt; \
242- struct UT_hash_handle *_hd_hh_del; \
243- if ( ((delptr)->hh.prev == NULL) && ((delptr)->hh.next == NULL) ) { \
244- uthash_free((head)->hh.tbl->buckets, \
245- (head)->hh.tbl->num_buckets*sizeof(struct UT_hash_bucket) ); \
246- HASH_BLOOM_FREE((head)->hh.tbl); \
247- uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \
248- head = NULL; \
249- } else { \
250- _hd_hh_del = &((delptr)->hh); \
251- if ((delptr) == ELMT_FROM_HH((head)->hh.tbl,(head)->hh.tbl->tail)) { \
252- (head)->hh.tbl->tail = \
253- (UT_hash_handle*)((ptrdiff_t)((delptr)->hh.prev) + \
254- (head)->hh.tbl->hho); \
255- } \
256- if ((delptr)->hh.prev) { \
257- ((UT_hash_handle*)((ptrdiff_t)((delptr)->hh.prev) + \
258- (head)->hh.tbl->hho))->next = (delptr)->hh.next; \
259- } else { \
260- DECLTYPE_ASSIGN(head,(delptr)->hh.next); \
261- } \
262- if (_hd_hh_del->next) { \
263- ((UT_hash_handle*)((ptrdiff_t)_hd_hh_del->next + \
264- (head)->hh.tbl->hho))->prev = \
265- _hd_hh_del->prev; \
266- } \
267- HASH_TO_BKT( _hd_hh_del->hashv, (head)->hh.tbl->num_buckets, _hd_bkt); \
268- HASH_DEL_IN_BKT(hh,(head)->hh.tbl->buckets[_hd_bkt], _hd_hh_del); \
269- (head)->hh.tbl->num_items--; \
270- } \
271- HASH_FSCK(hh,head); \
272-} while (0)
273-
274-
275-/* convenience forms of HASH_FIND/HASH_ADD/HASH_DEL */
276-#define HASH_FIND_STR(head,findstr,out) \
277- HASH_FIND(hh,head,findstr,strlen(findstr),out)
278-#define HASH_ADD_STR(head,strfield,add) \
279- HASH_ADD(hh,head,strfield,strlen(add->strfield),add)
280-#define HASH_REPLACE_STR(head,strfield,add,replaced) \
281- HASH_REPLACE(hh,head,strfield,strlen(add->strfield),add,replaced)
282-#define HASH_FIND_INT(head,findint,out) \
283- HASH_FIND(hh,head,findint,sizeof(int),out)
284-#define HASH_ADD_INT(head,intfield,add) \
285- HASH_ADD(hh,head,intfield,sizeof(int),add)
286-#define HASH_REPLACE_INT(head,intfield,add,replaced) \
287- HASH_REPLACE(hh,head,intfield,sizeof(int),add,replaced)
288-#define HASH_FIND_PTR(head,findptr,out) \
289- HASH_FIND(hh,head,findptr,sizeof(void *),out)
290-#define HASH_ADD_PTR(head,ptrfield,add) \
291- HASH_ADD(hh,head,ptrfield,sizeof(void *),add)
292-#define HASH_REPLACE_PTR(head,ptrfield,add) \
293- HASH_REPLACE(hh,head,ptrfield,sizeof(void *),add,replaced)
294-#define HASH_DEL(head,delptr) \
295- HASH_DELETE(hh,head,delptr)
296-
297-/* HASH_FSCK checks hash integrity on every add/delete when HASH_DEBUG is defined.
298- * This is for uthash developer only; it compiles away if HASH_DEBUG isn't defined.
299- */
300-#ifdef HASH_DEBUG
301-#define HASH_OOPS(...) do { fprintf(stderr,__VA_ARGS__); exit(-1); } while (0)
302-#define HASH_FSCK(hh,head) \
303-do { \
304- unsigned _bkt_i; \
305- unsigned _count, _bkt_count; \
306- char *_prev; \
307- struct UT_hash_handle *_thh; \
308- if (head) { \
309- _count = 0; \
310- for( _bkt_i = 0; _bkt_i < (head)->hh.tbl->num_buckets; _bkt_i++) { \
311- _bkt_count = 0; \
312- _thh = (head)->hh.tbl->buckets[_bkt_i].hh_head; \
313- _prev = NULL; \
314- while (_thh) { \
315- if (_prev != (char*)(_thh->hh_prev)) { \
316- HASH_OOPS("invalid hh_prev %p, actual %p\n", \
317- _thh->hh_prev, _prev ); \
318- } \
319- _bkt_count++; \
320- _prev = (char*)(_thh); \
321- _thh = _thh->hh_next; \
322- } \
323- _count += _bkt_count; \
324- if ((head)->hh.tbl->buckets[_bkt_i].count != _bkt_count) { \
325- HASH_OOPS("invalid bucket count %d, actual %d\n", \
326- (head)->hh.tbl->buckets[_bkt_i].count, _bkt_count); \
327- } \
328- } \
329- if (_count != (head)->hh.tbl->num_items) { \
330- HASH_OOPS("invalid hh item count %d, actual %d\n", \
331- (head)->hh.tbl->num_items, _count ); \
332- } \
333- /* traverse hh in app order; check next/prev integrity, count */ \
334- _count = 0; \
335- _prev = NULL; \
336- _thh = &(head)->hh; \
337- while (_thh) { \
338- _count++; \
339- if (_prev !=(char*)(_thh->prev)) { \
340- HASH_OOPS("invalid prev %p, actual %p\n", \
341- _thh->prev, _prev ); \
342- } \
343- _prev = (char*)ELMT_FROM_HH((head)->hh.tbl, _thh); \
344- _thh = ( _thh->next ? (UT_hash_handle*)((char*)(_thh->next) + \
345- (head)->hh.tbl->hho) : NULL ); \
346- } \
347- if (_count != (head)->hh.tbl->num_items) { \
348- HASH_OOPS("invalid app item count %d, actual %d\n", \
349- (head)->hh.tbl->num_items, _count ); \
350- } \
351- } \
352-} while (0)
353-#else
354-#define HASH_FSCK(hh,head)
355-#endif
356-
357-/* When compiled with -DHASH_EMIT_KEYS, length-prefixed keys are emitted to
358- * the descriptor to which this macro is defined for tuning the hash function.
359- * The app can #include <unistd.h> to get the prototype for write(2). */
360-#ifdef HASH_EMIT_KEYS
361-#define HASH_EMIT_KEY(hh,head,keyptr,fieldlen) \
362-do { \
363- unsigned _klen = fieldlen; \
364- write(HASH_EMIT_KEYS, &_klen, sizeof(_klen)); \
365- write(HASH_EMIT_KEYS, keyptr, fieldlen); \
366-} while (0)
367-#else
368-#define HASH_EMIT_KEY(hh,head,keyptr,fieldlen)
369-#endif
370-
371-/* default to Jenkin's hash unless overridden e.g. DHASH_FUNCTION=HASH_SAX */
372-#ifdef HASH_FUNCTION
373-#define HASH_FCN HASH_FUNCTION
374-#else
375-#define HASH_FCN HASH_JEN
376-#endif
377-
378-/* The Bernstein hash function, used in Perl prior to v5.6 */
379-#define HASH_BER(key,keylen,num_bkts,hashv,bkt) \
380-do { \
381- unsigned _hb_keylen=keylen; \
382- char *_hb_key=(char*)(key); \
383- (hashv) = 0; \
384- while (_hb_keylen--) { (hashv) = ((hashv) * 33) + *_hb_key++; } \
385- bkt = (hashv) & (num_bkts-1); \
386-} while (0)
387-
388-
389-/* SAX/FNV/OAT/JEN hash functions are macro variants of those listed at
390- * http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx */
391-#define HASH_SAX(key,keylen,num_bkts,hashv,bkt) \
392-do { \
393- unsigned _sx_i; \
394- char *_hs_key=(char*)(key); \
395- hashv = 0; \
396- for(_sx_i=0; _sx_i < keylen; _sx_i++) \
397- hashv ^= (hashv << 5) + (hashv >> 2) + _hs_key[_sx_i]; \
398- bkt = hashv & (num_bkts-1); \
399-} while (0)
400-
401-#define HASH_FNV(key,keylen,num_bkts,hashv,bkt) \
402-do { \
403- unsigned _fn_i; \
404- char *_hf_key=(char*)(key); \
405- hashv = 2166136261UL; \
406- for(_fn_i=0; _fn_i < keylen; _fn_i++) \
407- hashv = (hashv * 16777619) ^ _hf_key[_fn_i]; \
408- bkt = hashv & (num_bkts-1); \
409-} while(0)
410-
411-#define HASH_OAT(key,keylen,num_bkts,hashv,bkt) \
412-do { \
413- unsigned _ho_i; \
414- char *_ho_key=(char*)(key); \
415- hashv = 0; \
416- for(_ho_i=0; _ho_i < keylen; _ho_i++) { \
417- hashv += _ho_key[_ho_i]; \
418- hashv += (hashv << 10); \
419- hashv ^= (hashv >> 6); \
420- } \
421- hashv += (hashv << 3); \
422- hashv ^= (hashv >> 11); \
423- hashv += (hashv << 15); \
424- bkt = hashv & (num_bkts-1); \
425-} while(0)
426-
427-#define HASH_JEN_MIX(a,b,c) \
428-do { \
429- a -= b; a -= c; a ^= ( c >> 13 ); \
430- b -= c; b -= a; b ^= ( a << 8 ); \
431- c -= a; c -= b; c ^= ( b >> 13 ); \
432- a -= b; a -= c; a ^= ( c >> 12 ); \
433- b -= c; b -= a; b ^= ( a << 16 ); \
434- c -= a; c -= b; c ^= ( b >> 5 ); \
435- a -= b; a -= c; a ^= ( c >> 3 ); \
436- b -= c; b -= a; b ^= ( a << 10 ); \
437- c -= a; c -= b; c ^= ( b >> 15 ); \
438-} while (0)
439-
440-#define HASH_JEN(key,keylen,num_bkts,hashv,bkt) \
441-do { \
442- unsigned _hj_i,_hj_j,_hj_k; \
443- unsigned char *_hj_key=(unsigned char*)(key); \
444- hashv = 0xfeedbeef; \
445- _hj_i = _hj_j = 0x9e3779b9; \
446- _hj_k = (unsigned)keylen; \
447- while (_hj_k >= 12) { \
448- _hj_i += (_hj_key[0] + ( (unsigned)_hj_key[1] << 8 ) \
449- + ( (unsigned)_hj_key[2] << 16 ) \
450- + ( (unsigned)_hj_key[3] << 24 ) ); \
451- _hj_j += (_hj_key[4] + ( (unsigned)_hj_key[5] << 8 ) \
452- + ( (unsigned)_hj_key[6] << 16 ) \
453- + ( (unsigned)_hj_key[7] << 24 ) ); \
454- hashv += (_hj_key[8] + ( (unsigned)_hj_key[9] << 8 ) \
455- + ( (unsigned)_hj_key[10] << 16 ) \
456- + ( (unsigned)_hj_key[11] << 24 ) ); \
457- \
458- HASH_JEN_MIX(_hj_i, _hj_j, hashv); \
459- \
460- _hj_key += 12; \
461- _hj_k -= 12; \
462- } \
463- hashv += keylen; \
464- switch ( _hj_k ) { \
465- case 11: hashv += ( (unsigned)_hj_key[10] << 24 ); \
466- case 10: hashv += ( (unsigned)_hj_key[9] << 16 ); \
467- case 9: hashv += ( (unsigned)_hj_key[8] << 8 ); \
468- case 8: _hj_j += ( (unsigned)_hj_key[7] << 24 ); \
469- case 7: _hj_j += ( (unsigned)_hj_key[6] << 16 ); \
470- case 6: _hj_j += ( (unsigned)_hj_key[5] << 8 ); \
471- case 5: _hj_j += _hj_key[4]; \
472- case 4: _hj_i += ( (unsigned)_hj_key[3] << 24 ); \
473- case 3: _hj_i += ( (unsigned)_hj_key[2] << 16 ); \
474- case 2: _hj_i += ( (unsigned)_hj_key[1] << 8 ); \
475- case 1: _hj_i += _hj_key[0]; \
476- } \
477- HASH_JEN_MIX(_hj_i, _hj_j, hashv); \
478- bkt = hashv & (num_bkts-1); \
479-} while(0)
480-
481-/* The Paul Hsieh hash function */
482-#undef get16bits
483-#if (defined(__GNUC__) && defined(__i386__)) || defined(__WATCOMC__) \
484- || defined(_MSC_VER) || defined (__BORLANDC__) || defined (__TURBOC__)
485-#define get16bits(d) (*((const uint16_t *) (d)))
486-#endif
487-
488-#if !defined (get16bits)
489-#define get16bits(d) ((((uint32_t)(((const uint8_t *)(d))[1])) << 8) \
490- +(uint32_t)(((const uint8_t *)(d))[0]) )
491-#endif
492-#define HASH_SFH(key,keylen,num_bkts,hashv,bkt) \
493-do { \
494- unsigned char *_sfh_key=(unsigned char*)(key); \
495- uint32_t _sfh_tmp, _sfh_len = keylen; \
496- \
497- int _sfh_rem = _sfh_len & 3; \
498- _sfh_len >>= 2; \
499- hashv = 0xcafebabe; \
500- \
501- /* Main loop */ \
502- for (;_sfh_len > 0; _sfh_len--) { \
503- hashv += get16bits (_sfh_key); \
504- _sfh_tmp = (uint32_t)(get16bits (_sfh_key+2)) << 11 ^ hashv; \
505- hashv = (hashv << 16) ^ _sfh_tmp; \
506- _sfh_key += 2*sizeof (uint16_t); \
507- hashv += hashv >> 11; \
508- } \
509- \
510- /* Handle end cases */ \
511- switch (_sfh_rem) { \
512- case 3: hashv += get16bits (_sfh_key); \
513- hashv ^= hashv << 16; \
514- hashv ^= (uint32_t)(_sfh_key[sizeof (uint16_t)] << 18); \
515- hashv += hashv >> 11; \
516- break; \
517- case 2: hashv += get16bits (_sfh_key); \
518- hashv ^= hashv << 11; \
519- hashv += hashv >> 17; \
520- break; \
521- case 1: hashv += *_sfh_key; \
522- hashv ^= hashv << 10; \
523- hashv += hashv >> 1; \
524- } \
525- \
526- /* Force "avalanching" of final 127 bits */ \
527- hashv ^= hashv << 3; \
528- hashv += hashv >> 5; \
529- hashv ^= hashv << 4; \
530- hashv += hashv >> 17; \
531- hashv ^= hashv << 25; \
532- hashv += hashv >> 6; \
533- bkt = hashv & (num_bkts-1); \
534-} while(0)
535-
536-#ifdef HASH_USING_NO_STRICT_ALIASING
537-/* The MurmurHash exploits some CPU's (x86,x86_64) tolerance for unaligned reads.
538- * For other types of CPU's (e.g. Sparc) an unaligned read causes a bus error.
539- * MurmurHash uses the faster approach only on CPU's where we know it's safe.
540- *
541- * Note the preprocessor built-in defines can be emitted using:
542- *
543- * gcc -m64 -dM -E - < /dev/null (on gcc)
544- * cc -## a.c (where a.c is a simple test file) (Sun Studio)
545- */
546-#if (defined(__i386__) || defined(__x86_64__) || defined(_M_IX86))
547-#define MUR_GETBLOCK(p,i) p[i]
548-#else /* non intel */
549-#define MUR_PLUS0_ALIGNED(p) (((unsigned long)p & 0x3) == 0)
550-#define MUR_PLUS1_ALIGNED(p) (((unsigned long)p & 0x3) == 1)
551-#define MUR_PLUS2_ALIGNED(p) (((unsigned long)p & 0x3) == 2)
552-#define MUR_PLUS3_ALIGNED(p) (((unsigned long)p & 0x3) == 3)
553-#define WP(p) ((uint32_t*)((unsigned long)(p) & ~3UL))
554-#if (defined(__BIG_ENDIAN__) || defined(SPARC) || defined(__ppc__) || defined(__ppc64__))
555-#define MUR_THREE_ONE(p) ((((*WP(p))&0x00ffffff) << 8) | (((*(WP(p)+1))&0xff000000) >> 24))
556-#define MUR_TWO_TWO(p) ((((*WP(p))&0x0000ffff) <<16) | (((*(WP(p)+1))&0xffff0000) >> 16))
557-#define MUR_ONE_THREE(p) ((((*WP(p))&0x000000ff) <<24) | (((*(WP(p)+1))&0xffffff00) >> 8))
558-#else /* assume little endian non-intel */
559-#define MUR_THREE_ONE(p) ((((*WP(p))&0xffffff00) >> 8) | (((*(WP(p)+1))&0x000000ff) << 24))
560-#define MUR_TWO_TWO(p) ((((*WP(p))&0xffff0000) >>16) | (((*(WP(p)+1))&0x0000ffff) << 16))
561-#define MUR_ONE_THREE(p) ((((*WP(p))&0xff000000) >>24) | (((*(WP(p)+1))&0x00ffffff) << 8))
562-#endif
563-#define MUR_GETBLOCK(p,i) (MUR_PLUS0_ALIGNED(p) ? ((p)[i]) : \
564- (MUR_PLUS1_ALIGNED(p) ? MUR_THREE_ONE(p) : \
565- (MUR_PLUS2_ALIGNED(p) ? MUR_TWO_TWO(p) : \
566- MUR_ONE_THREE(p))))
567-#endif
568-#define MUR_ROTL32(x,r) (((x) << (r)) | ((x) >> (32 - (r))))
569-#define MUR_FMIX(_h) \
570-do { \
571- _h ^= _h >> 16; \
572- _h *= 0x85ebca6b; \
573- _h ^= _h >> 13; \
574- _h *= 0xc2b2ae35l; \
575- _h ^= _h >> 16; \
576-} while(0)
577-
578-#define HASH_MUR(key,keylen,num_bkts,hashv,bkt) \
579-do { \
580- const uint8_t *_mur_data = (const uint8_t*)(key); \
581- const int _mur_nblocks = (keylen) / 4; \
582- uint32_t _mur_h1 = 0xf88D5353; \
583- uint32_t _mur_c1 = 0xcc9e2d51; \
584- uint32_t _mur_c2 = 0x1b873593; \
585- uint32_t _mur_k1 = 0; \
586- const uint8_t *_mur_tail; \
587- const uint32_t *_mur_blocks = (const uint32_t*)(_mur_data+_mur_nblocks*4); \
588- int _mur_i; \
589- for(_mur_i = -_mur_nblocks; _mur_i; _mur_i++) { \
590- _mur_k1 = MUR_GETBLOCK(_mur_blocks,_mur_i); \
591- _mur_k1 *= _mur_c1; \
592- _mur_k1 = MUR_ROTL32(_mur_k1,15); \
593- _mur_k1 *= _mur_c2; \
594- \
595- _mur_h1 ^= _mur_k1; \
596- _mur_h1 = MUR_ROTL32(_mur_h1,13); \
597- _mur_h1 = _mur_h1*5+0xe6546b64; \
598- } \
599- _mur_tail = (const uint8_t*)(_mur_data + _mur_nblocks*4); \
600- _mur_k1=0; \
601- switch((keylen) & 3) { \
602- case 3: _mur_k1 ^= _mur_tail[2] << 16; \
603- case 2: _mur_k1 ^= _mur_tail[1] << 8; \
604- case 1: _mur_k1 ^= _mur_tail[0]; \
605- _mur_k1 *= _mur_c1; \
606- _mur_k1 = MUR_ROTL32(_mur_k1,15); \
607- _mur_k1 *= _mur_c2; \
608- _mur_h1 ^= _mur_k1; \
609- } \
610- _mur_h1 ^= (keylen); \
611- MUR_FMIX(_mur_h1); \
612- hashv = _mur_h1; \
613- bkt = hashv & (num_bkts-1); \
614-} while(0)
615-#endif /* HASH_USING_NO_STRICT_ALIASING */
616-
617-/* key comparison function; return 0 if keys equal */
618-#define HASH_KEYCMP(a,b,len) memcmp(a,b,len)
619-
620-/* iterate over items in a known bucket to find desired item */
621-#define HASH_FIND_IN_BKT(tbl,hh,head,keyptr,keylen_in,out) \
622-do { \
623- if (head.hh_head) DECLTYPE_ASSIGN(out,ELMT_FROM_HH(tbl,head.hh_head)); \
624- else out=NULL; \
625- while (out) { \
626- if ((out)->hh.keylen == keylen_in) { \
627- if ((HASH_KEYCMP((out)->hh.key,keyptr,keylen_in)) == 0) break; \
628- } \
629- if ((out)->hh.hh_next) DECLTYPE_ASSIGN(out,ELMT_FROM_HH(tbl,(out)->hh.hh_next)); \
630- else out = NULL; \
631- } \
632-} while(0)
633-
634-/* add an item to a bucket */
635-#define HASH_ADD_TO_BKT(head,addhh) \
636-do { \
637- head.count++; \
638- (addhh)->hh_next = head.hh_head; \
639- (addhh)->hh_prev = NULL; \
640- if (head.hh_head) { (head).hh_head->hh_prev = (addhh); } \
641- (head).hh_head=addhh; \
642- if (head.count >= ((head.expand_mult+1) * HASH_BKT_CAPACITY_THRESH) \
643- && (addhh)->tbl->noexpand != 1) { \
644- HASH_EXPAND_BUCKETS((addhh)->tbl); \
645- } \
646-} while(0)
647-
648-/* remove an item from a given bucket */
649-#define HASH_DEL_IN_BKT(hh,head,hh_del) \
650- (head).count--; \
651- if ((head).hh_head == hh_del) { \
652- (head).hh_head = hh_del->hh_next; \
653- } \
654- if (hh_del->hh_prev) { \
655- hh_del->hh_prev->hh_next = hh_del->hh_next; \
656- } \
657- if (hh_del->hh_next) { \
658- hh_del->hh_next->hh_prev = hh_del->hh_prev; \
659- }
660-
661-/* Bucket expansion has the effect of doubling the number of buckets
662- * and redistributing the items into the new buckets. Ideally the
663- * items will distribute more or less evenly into the new buckets
664- * (the extent to which this is true is a measure of the quality of
665- * the hash function as it applies to the key domain).
666- *
667- * With the items distributed into more buckets, the chain length
668- * (item count) in each bucket is reduced. Thus by expanding buckets
669- * the hash keeps a bound on the chain length. This bounded chain
670- * length is the essence of how a hash provides constant time lookup.
671- *
672- * The calculation of tbl->ideal_chain_maxlen below deserves some
673- * explanation. First, keep in mind that we're calculating the ideal
674- * maximum chain length based on the *new* (doubled) bucket count.
675- * In fractions this is just n/b (n=number of items,b=new num buckets).
676- * Since the ideal chain length is an integer, we want to calculate
677- * ceil(n/b). We don't depend on floating point arithmetic in this
678- * hash, so to calculate ceil(n/b) with integers we could write
679- *
680- * ceil(n/b) = (n/b) + ((n%b)?1:0)
681- *
682- * and in fact a previous version of this hash did just that.
683- * But now we have improved things a bit by recognizing that b is
684- * always a power of two. We keep its base 2 log handy (call it lb),
685- * so now we can write this with a bit shift and logical AND:
686- *
687- * ceil(n/b) = (n>>lb) + ( (n & (b-1)) ? 1:0)
688- *
689- */
690-#define HASH_EXPAND_BUCKETS(tbl) \
691-do { \
692- unsigned _he_bkt; \
693- unsigned _he_bkt_i; \
694- struct UT_hash_handle *_he_thh, *_he_hh_nxt; \
695- UT_hash_bucket *_he_new_buckets, *_he_newbkt; \
696- _he_new_buckets = (UT_hash_bucket*)uthash_malloc( \
697- 2 * tbl->num_buckets * sizeof(struct UT_hash_bucket)); \
698- if (!_he_new_buckets) { uthash_fatal( "out of memory"); } \
699- memset(_he_new_buckets, 0, \
700- 2 * tbl->num_buckets * sizeof(struct UT_hash_bucket)); \
701- tbl->ideal_chain_maxlen = \
702- (tbl->num_items >> (tbl->log2_num_buckets+1)) + \
703- ((tbl->num_items & ((tbl->num_buckets*2)-1)) ? 1 : 0); \
704- tbl->nonideal_items = 0; \
705- for(_he_bkt_i = 0; _he_bkt_i < tbl->num_buckets; _he_bkt_i++) \
706- { \
707- _he_thh = tbl->buckets[ _he_bkt_i ].hh_head; \
708- while (_he_thh) { \
709- _he_hh_nxt = _he_thh->hh_next; \
710- HASH_TO_BKT( _he_thh->hashv, tbl->num_buckets*2, _he_bkt); \
711- _he_newbkt = &(_he_new_buckets[ _he_bkt ]); \
712- if (++(_he_newbkt->count) > tbl->ideal_chain_maxlen) { \
713- tbl->nonideal_items++; \
714- _he_newbkt->expand_mult = _he_newbkt->count / \
715- tbl->ideal_chain_maxlen; \
716- } \
717- _he_thh->hh_prev = NULL; \
718- _he_thh->hh_next = _he_newbkt->hh_head; \
719- if (_he_newbkt->hh_head) _he_newbkt->hh_head->hh_prev = \
720- _he_thh; \
721- _he_newbkt->hh_head = _he_thh; \
722- _he_thh = _he_hh_nxt; \
723- } \
724- } \
725- uthash_free( tbl->buckets, tbl->num_buckets*sizeof(struct UT_hash_bucket) ); \
726- tbl->num_buckets *= 2; \
727- tbl->log2_num_buckets++; \
728- tbl->buckets = _he_new_buckets; \
729- tbl->ineff_expands = (tbl->nonideal_items > (tbl->num_items >> 1)) ? \
730- (tbl->ineff_expands+1) : 0; \
731- if (tbl->ineff_expands > 1) { \
732- tbl->noexpand=1; \
733- uthash_noexpand_fyi(tbl); \
734- } \
735- uthash_expand_fyi(tbl); \
736-} while(0)
737-
738-
739-/* This is an adaptation of Simon Tatham's O(n log(n)) mergesort */
740-/* Note that HASH_SORT assumes the hash handle name to be hh.
741- * HASH_SRT was added to allow the hash handle name to be passed in. */
742-#define HASH_SORT(head,cmpfcn) HASH_SRT(hh,head,cmpfcn)
743-#define HASH_SRT(hh,head,cmpfcn) \
744-do { \
745- unsigned _hs_i; \
746- unsigned _hs_looping,_hs_nmerges,_hs_insize,_hs_psize,_hs_qsize; \
747- struct UT_hash_handle *_hs_p, *_hs_q, *_hs_e, *_hs_list, *_hs_tail; \
748- if (head) { \
749- _hs_insize = 1; \
750- _hs_looping = 1; \
751- _hs_list = &((head)->hh); \
752- while (_hs_looping) { \
753- _hs_p = _hs_list; \
754- _hs_list = NULL; \
755- _hs_tail = NULL; \
756- _hs_nmerges = 0; \
757- while (_hs_p) { \
758- _hs_nmerges++; \
759- _hs_q = _hs_p; \
760- _hs_psize = 0; \
761- for ( _hs_i = 0; _hs_i < _hs_insize; _hs_i++ ) { \
762- _hs_psize++; \
763- _hs_q = (UT_hash_handle*)((_hs_q->next) ? \
764- ((void*)((char*)(_hs_q->next) + \
765- (head)->hh.tbl->hho)) : NULL); \
766- if (! (_hs_q) ) break; \
767- } \
768- _hs_qsize = _hs_insize; \
769- while ((_hs_psize > 0) || ((_hs_qsize > 0) && _hs_q )) { \
770- if (_hs_psize == 0) { \
771- _hs_e = _hs_q; \
772- _hs_q = (UT_hash_handle*)((_hs_q->next) ? \
773- ((void*)((char*)(_hs_q->next) + \
774- (head)->hh.tbl->hho)) : NULL); \
775- _hs_qsize--; \
776- } else if ( (_hs_qsize == 0) || !(_hs_q) ) { \
777- _hs_e = _hs_p; \
778- if (_hs_p){ \
779- _hs_p = (UT_hash_handle*)((_hs_p->next) ? \
780- ((void*)((char*)(_hs_p->next) + \
781- (head)->hh.tbl->hho)) : NULL); \
782- } \
783- _hs_psize--; \
784- } else if (( \
785- cmpfcn(DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl,_hs_p)), \
786- DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl,_hs_q))) \
787- ) <= 0) { \
788- _hs_e = _hs_p; \
789- if (_hs_p){ \
790- _hs_p = (UT_hash_handle*)((_hs_p->next) ? \
791- ((void*)((char*)(_hs_p->next) + \
792- (head)->hh.tbl->hho)) : NULL); \
793- } \
794- _hs_psize--; \
795- } else { \
796- _hs_e = _hs_q; \
797- _hs_q = (UT_hash_handle*)((_hs_q->next) ? \
798- ((void*)((char*)(_hs_q->next) + \
799- (head)->hh.tbl->hho)) : NULL); \
800- _hs_qsize--; \
801- } \
802- if ( _hs_tail ) { \
803- _hs_tail->next = ((_hs_e) ? \
804- ELMT_FROM_HH((head)->hh.tbl,_hs_e) : NULL); \
805- } else { \
806- _hs_list = _hs_e; \
807- } \
808- if (_hs_e) { \
809- _hs_e->prev = ((_hs_tail) ? \
810- ELMT_FROM_HH((head)->hh.tbl,_hs_tail) : NULL); \
811- } \
812- _hs_tail = _hs_e; \
813- } \
814- _hs_p = _hs_q; \
815- } \
816- if (_hs_tail){ \
817- _hs_tail->next = NULL; \
818- } \
819- if ( _hs_nmerges <= 1 ) { \
820- _hs_looping=0; \
821- (head)->hh.tbl->tail = _hs_tail; \
822- DECLTYPE_ASSIGN(head,ELMT_FROM_HH((head)->hh.tbl, _hs_list)); \
823- } \
824- _hs_insize *= 2; \
825- } \
826- HASH_FSCK(hh,head); \
827- } \
828-} while (0)
829-
830-/* This function selects items from one hash into another hash.
831- * The end result is that the selected items have dual presence
832- * in both hashes. There is no copy of the items made; rather
833- * they are added into the new hash through a secondary hash
834- * hash handle that must be present in the structure. */
835-#define HASH_SELECT(hh_dst, dst, hh_src, src, cond) \
836-do { \
837- unsigned _src_bkt, _dst_bkt; \
838- void *_last_elt=NULL, *_elt; \
839- UT_hash_handle *_src_hh, *_dst_hh, *_last_elt_hh=NULL; \
840- ptrdiff_t _dst_hho = ((char*)(&(dst)->hh_dst) - (char*)(dst)); \
841- if (src) { \
842- for(_src_bkt=0; _src_bkt < (src)->hh_src.tbl->num_buckets; _src_bkt++) { \
843- for(_src_hh = (src)->hh_src.tbl->buckets[_src_bkt].hh_head; \
844- _src_hh; \
845- _src_hh = _src_hh->hh_next) { \
846- _elt = ELMT_FROM_HH((src)->hh_src.tbl, _src_hh); \
847- if (cond(_elt)) { \
848- _dst_hh = (UT_hash_handle*)(((char*)_elt) + _dst_hho); \
849- _dst_hh->key = _src_hh->key; \
850- _dst_hh->keylen = _src_hh->keylen; \
851- _dst_hh->hashv = _src_hh->hashv; \
852- _dst_hh->prev = _last_elt; \
853- _dst_hh->next = NULL; \
854- if (_last_elt_hh) { _last_elt_hh->next = _elt; } \
855- if (!dst) { \
856- DECLTYPE_ASSIGN(dst,_elt); \
857- HASH_MAKE_TABLE(hh_dst,dst); \
858- } else { \
859- _dst_hh->tbl = (dst)->hh_dst.tbl; \
860- } \
861- HASH_TO_BKT(_dst_hh->hashv, _dst_hh->tbl->num_buckets, _dst_bkt); \
862- HASH_ADD_TO_BKT(_dst_hh->tbl->buckets[_dst_bkt],_dst_hh); \
863- (dst)->hh_dst.tbl->num_items++; \
864- _last_elt = _elt; \
865- _last_elt_hh = _dst_hh; \
866- } \
867- } \
868- } \
869- } \
870- HASH_FSCK(hh_dst,dst); \
871-} while (0)
872-
873-#define HASH_CLEAR(hh,head) \
874-do { \
875- if (head) { \
876- uthash_free((head)->hh.tbl->buckets, \
877- (head)->hh.tbl->num_buckets*sizeof(struct UT_hash_bucket)); \
878- HASH_BLOOM_FREE((head)->hh.tbl); \
879- uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \
880- (head)=NULL; \
881- } \
882-} while(0)
883-
884-#define HASH_OVERHEAD(hh,head) \
885- (size_t)((((head)->hh.tbl->num_items * sizeof(UT_hash_handle)) + \
886- ((head)->hh.tbl->num_buckets * sizeof(UT_hash_bucket)) + \
887- (sizeof(UT_hash_table)) + \
888- (HASH_BLOOM_BYTELEN)))
889-
890-#ifdef NO_DECLTYPE
891-#define HASH_ITER(hh,head,el,tmp) \
892-for((el)=(head), (*(char**)(&(tmp)))=(char*)((head)?(head)->hh.next:NULL); \
893- el; (el)=(tmp),(*(char**)(&(tmp)))=(char*)((tmp)?(tmp)->hh.next:NULL))
894-#else
895-#define HASH_ITER(hh,head,el,tmp) \
896-for((el)=(head),(tmp)=DECLTYPE(el)((head)?(head)->hh.next:NULL); \
897- el; (el)=(tmp),(tmp)=DECLTYPE(el)((tmp)?(tmp)->hh.next:NULL))
898-#endif
899-
900-/* obtain a count of items in the hash */
901-#define HASH_COUNT(head) HASH_CNT(hh,head)
902-#define HASH_CNT(hh,head) ((head)?((head)->hh.tbl->num_items):0)
903-
904-typedef struct UT_hash_bucket {
905- struct UT_hash_handle *hh_head;
906- unsigned count;
907-
908- /* expand_mult is normally set to 0. In this situation, the max chain length
909- * threshold is enforced at its default value, HASH_BKT_CAPACITY_THRESH. (If
910- * the bucket's chain exceeds this length, bucket expansion is triggered).
911- * However, setting expand_mult to a non-zero value delays bucket expansion
912- * (that would be triggered by additions to this particular bucket)
913- * until its chain length reaches a *multiple* of HASH_BKT_CAPACITY_THRESH.
914- * (The multiplier is simply expand_mult+1). The whole idea of this
915- * multiplier is to reduce bucket expansions, since they are expensive, in
916- * situations where we know that a particular bucket tends to be overused.
917- * It is better to let its chain length grow to a longer yet-still-bounded
918- * value, than to do an O(n) bucket expansion too often.
919- */
920- unsigned expand_mult;
921-
922-} UT_hash_bucket;
923-
924-/* random signature used only to find hash tables in external analysis */
925-#define HASH_SIGNATURE 0xa0111fe1
926-#define HASH_BLOOM_SIGNATURE 0xb12220f2
927-
928-typedef struct UT_hash_table {
929- UT_hash_bucket *buckets;
930- unsigned num_buckets, log2_num_buckets;
931- unsigned num_items;
932- struct UT_hash_handle *tail; /* tail hh in app order, for fast append */
933- ptrdiff_t hho; /* hash handle offset (byte pos of hash handle in element */
934-
935- /* in an ideal situation (all buckets used equally), no bucket would have
936- * more than ceil(#items/#buckets) items. that's the ideal chain length. */
937- unsigned ideal_chain_maxlen;
938-
939- /* nonideal_items is the number of items in the hash whose chain position
940- * exceeds the ideal chain maxlen. these items pay the penalty for an uneven
941- * hash distribution; reaching them in a chain traversal takes >ideal steps */
942- unsigned nonideal_items;
943-
944- /* ineffective expands occur when a bucket doubling was performed, but
945- * afterward, more than half the items in the hash had nonideal chain
946- * positions. If this happens on two consecutive expansions we inhibit any
947- * further expansion, as it's not helping; this happens when the hash
948- * function isn't a good fit for the key domain. When expansion is inhibited
949- * the hash will still work, albeit no longer in constant time. */
950- unsigned ineff_expands, noexpand;
951-
952- uint32_t signature; /* used only to find hash tables in external analysis */
953-#ifdef HASH_BLOOM
954- uint32_t bloom_sig; /* used only to test bloom exists in external analysis */
955- uint8_t *bloom_bv;
956- char bloom_nbits;
957-#endif
958-
959-} UT_hash_table;
960-
961-typedef struct UT_hash_handle {
962- struct UT_hash_table *tbl;
963- void *prev; /* prev element in app order */
964- void *next; /* next element in app order */
965- struct UT_hash_handle *hh_prev; /* previous hh in bucket order */
966- struct UT_hash_handle *hh_next; /* next hh in bucket order */
967- void *key; /* ptr to enclosing struct's key */
968- unsigned keylen; /* enclosing struct's key len */
969- unsigned hashv; /* result of hash-fcn(key) */
970-} UT_hash_handle;
971-
972-#endif /* UTHASH_H */
973--
9742.15.1
975