diff --git a/.gitattributes b/.gitattributes index 7edc8be02..2ed3fc12b 100644 --- a/.gitattributes +++ b/.gitattributes @@ -2,7 +2,9 @@ *.cs linguist-language=Java *.py linguist-language=Python *.cpp linguist-language=C++ +*.hpp linguist-language=C++ *.c linguist-language=C++ +*.h linguist-language=C++ *.go linguist-language=Go *.js linguist-language=JavaScript *.ts linguist-language=JavaScript diff --git a/codes/c/include/CMakeLists.txt b/codes/c/include/CMakeLists.txt index 58d337bb6..4189ae334 100644 --- a/codes/c/include/CMakeLists.txt +++ b/codes/c/include/CMakeLists.txt @@ -1,5 +1,4 @@ add_executable(include include_test.c - uthash.h include.h print_util.h list_node.h tree_node.h) \ No newline at end of file diff --git a/codes/c/include/include.h b/codes/c/include/include.h index ad17a5361..e3919a9f5 100644 --- a/codes/c/include/include.h +++ b/codes/c/include/include.h @@ -14,8 +14,6 @@ #include #include -#include "uthash.h" - #include "list_node.h" #include "tree_node.h" #include "print_util.h" diff --git a/codes/c/include/uthash.h b/codes/c/include/uthash.h deleted file mode 100644 index 68693bf39..000000000 --- a/codes/c/include/uthash.h +++ /dev/null @@ -1,1140 +0,0 @@ -/* -Copyright (c) 2003-2022, Troy D. Hanson https://troydhanson.github.io/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 2.3.0 - -#include /* memcmp, memset, strlen */ -#include /* ptrdiff_t */ -#include /* exit */ - -#if defined(HASH_DEFINE_OWN_STDINT) && HASH_DEFINE_OWN_STDINT -/* This codepath is provided for backward compatibility, but I plan to remove it. */ -#warning "HASH_DEFINE_OWN_STDINT is deprecated; please use HASH_NO_STDINT instead" -typedef unsigned int uint32_t; -typedef unsigned char uint8_t; -#elif defined(HASH_NO_STDINT) && HASH_NO_STDINT -#else -#include /* uint8_t, uint32_t */ -#endif - -/* 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) -#if defined(_MSC_VER) /* MS compiler */ -#if _MSC_VER >= 1600 && defined(__cplusplus) /* VS2010 or newer in C++ mode */ -#define DECLTYPE(x) (decltype(x)) -#else /* VS2008 or older (or VS2010 in C mode) */ -#define NO_DECLTYPE -#endif -#elif defined(__MCST__) /* Elbrus C Compiler */ -#define DECLTYPE(x) (__typeof(x)) -#elif defined(__BORLANDC__) || defined(__ICCARM__) || defined(__LCC__) || defined(__WATCOMC__) -#define NO_DECLTYPE -#else /* GNU, Sun and other compilers */ -#define DECLTYPE(x) (__typeof(x)) -#endif -#endif - -#ifdef NO_DECLTYPE -#define DECLTYPE(x) -#define DECLTYPE_ASSIGN(dst,src) \ -do { \ - char **_da_dst = (char**)(&(dst)); \ - *_da_dst = (char*)(src); \ -} while (0) -#else -#define DECLTYPE_ASSIGN(dst,src) \ -do { \ - (dst) = DECLTYPE(dst)(src); \ -} while (0) -#endif - -#ifndef uthash_malloc -#define uthash_malloc(sz) malloc(sz) /* malloc fcn */ -#endif -#ifndef uthash_free -#define uthash_free(ptr,sz) free(ptr) /* free fcn */ -#endif -#ifndef uthash_bzero -#define uthash_bzero(a,n) memset(a,'\0',n) -#endif -#ifndef uthash_strlen -#define uthash_strlen(s) strlen(s) -#endif - -#ifndef HASH_FUNCTION -#define HASH_FUNCTION(keyptr,keylen,hashv) HASH_JEN(keyptr, keylen, hashv) -#endif - -#ifndef HASH_KEYCMP -#define HASH_KEYCMP(a,b,n) memcmp(a,b,n) -#endif - -#ifndef uthash_noexpand_fyi -#define uthash_noexpand_fyi(tbl) /* can be defined to log noexpand */ -#endif -#ifndef uthash_expand_fyi -#define uthash_expand_fyi(tbl) /* can be defined to log expands */ -#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 -#define uthash_nonfatal_oom(obj) do {} while (0) /* non-fatal OOM error */ -#endif - -#define HASH_RECORD_OOM(oomed) do { (oomed) = 1; } while (0) -#define IF_HASH_NONFATAL_OOM(x) x - -#else -/* malloc failures result in lost memory, hash tables are unusable */ - -#ifndef uthash_fatal -#define uthash_fatal(msg) exit(-1) /* fatal OOM error */ -#endif - -#define HASH_RECORD_OOM(oomed) uthash_fatal("out of memory") -#define IF_HASH_NONFATAL_OOM(x) - -#endif - -/* initial number of buckets */ -#define HASH_INITIAL_NUM_BUCKETS 32U /* initial number of buckets */ -#define HASH_INITIAL_NUM_BUCKETS_LOG2 5U /* lg2 of initial number of buckets */ -#define HASH_BKT_CAPACITY_THRESH 10U /* expand when bucket count reaches */ - -/* calculate the element whose hash handle address is hhp */ -#define ELMT_FROM_HH(tbl,hhp) ((void*)(((char*)(hhp)) - ((tbl)->hho))) -/* calculate the hash handle from element address elp */ -#define HH_FROM_ELMT(tbl,elp) ((UT_hash_handle*)(void*)(((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_FUNCTION(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 { \ - (out) = NULL; \ - if (head) { \ - unsigned _hf_hashv; \ - HASH_VALUE(keyptr, keylen, _hf_hashv); \ - HASH_FIND_BYHASHVALUE(hh, head, keyptr, keylen, _hf_hashv, out); \ - } \ -} while (0) - -#ifdef HASH_BLOOM -#define HASH_BLOOM_BITLEN (1UL << HASH_BLOOM) -#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))) - -#else -#define HASH_BLOOM_MAKE(tbl,oomed) -#define HASH_BLOOM_FREE(tbl) -#define HASH_BLOOM_ADD(tbl,hashv) -#define HASH_BLOOM_TEST(tbl,hashv) (1) -#define HASH_BLOOM_BYTELEN 0U -#endif - -#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) - -#ifdef NO_DECLTYPE -#undef HASH_AKBI_INNER_LOOP -#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) -#endif - -#if HASH_NONFATAL_OOM - -#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) - -#else - -#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) - -#endif - - -#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) { ) \ - (head) = (add); \ - 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 = (const void*) (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) { ) \ - (head) = (add); \ - 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) - -/* 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. - */ -#define HASH_DELETE(hh,head,delptr) \ - HASH_DELETE_HH(hh, head, &(delptr)->hh) - -#define HASH_DELETE_HH(hh,head,delptrhh) \ -do { \ - const 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) - -/* convenience forms of HASH_FIND/HASH_ADD/HASH_DEL */ -#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) - -/* 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 -#include /* fprintf, stderr */ -#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) -#else -#define HASH_FSCK(hh,head,where) -#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 to get the prototype for write(2). */ -#ifdef HASH_EMIT_KEYS -#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) -#else -#define HASH_EMIT_KEY(hh,head,keyptr,fieldlen) -#endif - -/* The Bernstein hash function, used in Perl prior to v5.6. Note (x<<5+x)=x*33. */ -#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) - - -/* SAX/FNV/OAT/JEN hash functions are macro variants of those listed at - * http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx - * (archive link: https://archive.is/Ivcan ) - */ -#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) -/* FNV-1a variation */ -#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]; /* FALLTHROUGH */ \ - default: ; \ - } \ - HASH_JEN_MIX(_hj_i, _hj_j, hashv); \ -} while (0) - -/* The Paul Hsieh hash function */ -#undef get16bits -#if (defined(__GNUC__) && defined(__i386__)) || defined(__WATCOMC__) \ - || defined(_MSC_VER) || defined (__BORLANDC__) || defined (__TURBOC__) -#define get16bits(d) (*((const uint16_t *) (d))) -#endif - -#if !defined (get16bits) -#define get16bits(d) ((((uint32_t)(((const uint8_t *)(d))[1])) << 8) \ - +(uint32_t)(((const uint8_t *)(d))[0]) ) -#endif -#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; \ - break; \ - default: ; \ - } \ - \ - /* 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) - -/* iterate over items in a known bucket to find desired item */ -#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) - -/* add an item to a bucket */ -#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) - -/* remove an item from a given bucket */ -#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) - -/* 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) - * - */ -#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( \ - sizeof(struct UT_hash_bucket) * (tbl)->num_buckets * 2U); \ - if (!_he_new_buckets) { \ - HASH_RECORD_OOM(oomed); \ - } else { \ - uthash_bzero(_he_new_buckets, \ - sizeof(struct UT_hash_bucket) * (tbl)->num_buckets * 2U); \ - (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) - - -/* 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. */ -#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) - -/* 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. */ -#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*)(void*)(((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) - -#ifdef NO_DECLTYPE -#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))) -#else -#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))) -#endif - -/* obtain a count of items in the hash */ -#define HASH_COUNT(head) HASH_CNT(hh,head) -#define HASH_CNT(hh,head) ((head != NULL)?((head)->hh.tbl->num_items):0U) - -typedef struct UT_hash_bucket { - 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; - -} 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 { - 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 */ -#ifdef HASH_BLOOM - uint32_t bloom_sig; /* used only to test bloom exists in external analysis */ - uint8_t *bloom_bv; - uint8_t bloom_nbits; -#endif - -} UT_hash_table; - -typedef struct UT_hash_handle { - 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 */ - const void *key; /* ptr to enclosing struct's key */ - unsigned keylen; /* enclosing struct's key len */ - unsigned hashv; /* result of hash-fcn(key) */ -} UT_hash_handle; - -#endif /* UTHASH_H */