Started game mode selection screen - cartcollect - An iOS game where you catch items in a cart

path: root/libs/cocos2d/Platforms/iOS/CCTouchDelegateProtocol.h

diff options

author	Starla Insigna <starla4444@gmail.com>	2011-08-18 15:51:48 -0400
committer	Starla Insigna <starla4444@gmail.com>	2011-08-18 15:51:48 -0400
commit	3750d7aa4e307d1f2099eceaa21014151e78d364 (patch)
tree	77487a1cc5fd055d2d8096a158d4908a5e4094fa /libs/cocos2d/Platforms/iOS/CCTouchDelegateProtocol.h
parent	6906cf0ce4f8266173d67a7b9fccc56747d5d618 (diff)
download	cartcollect-3750d7aa4e307d1f2099eceaa21014151e78d364.tar.gz cartcollect-3750d7aa4e307d1f2099eceaa21014151e78d364.tar.bz2 cartcollect-3750d7aa4e307d1f2099eceaa21014151e78d364.zip

Started game mode selection screen

So far, tapping "New Game" shows a screen with two game modes: the tutorial and the classic collect. They both have pictures and Collect's is grayscale if it hasn't been unlocked yet (a.k.a. the tutorial hasn't been completed yet). Also, Collect's title is replaced with question marks and the text "Beat the tutorial!" is shown if it isn't unlocked--if it is unlocked, the player's highscore, if they have one, is shown. A "Back to Main Menu" button is also present. Neither selection is as of yet tappable, and neither picture yet has a border. You cannot scroll through modes yet either.

Refs #207

Diffstat (limited to 'libs/cocos2d/Platforms/iOS/CCTouchDelegateProtocol.h')

0 files changed, 0 insertions, 0 deletions

ef='#n150'>150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972

/*
Copyright (c) 2003-2010, Troy D. Hanson     http://uthash.sourceforge.net
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 

#include <string.h>   /* memcmp,strlen */
#include <stddef.h>   /* ptrdiff_t */

/* 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. */
#ifdef _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
#define DECLTYPE(x)
#endif
#else                   /* GNU, Sun and other compilers */
#define DECLTYPE(x) (__typeof(x))
#endif

#ifdef NO_DECLTYPE
#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

/* a number of the hash function use uint32_t which isn't defined on win32 */
#ifdef _MSC_VER
typedef unsigned int uint32_t;
#else
#include <inttypes.h>   /* uint32_t */
#endif

#define UTHASH_VERSION 1.9.3

#define uthash_fatal(msg) exit(-1)        /* fatal error (out of memory,etc) */
#define uthash_malloc(sz) malloc(sz)      /* malloc fcn                      */
#define uthash_free(ptr,sz) free(ptr)     /* free fcn                        */

#define uthash_noexpand_fyi(tbl)          /* can be defined to log noexpand  */
#define uthash_expand_fyi(tbl)            /* can be defined to log expands   */

/* initial number of buckets */
#define HASH_INITIAL_NUM_BUCKETS 32      /* initial number of buckets        */
#define HASH_INITIAL_NUM_BUCKETS_LOG2 5  /* lg2 of initial number of buckets */
#define HASH_BKT_CAPACITY_THRESH 10      /* expand when bucket count reaches */

/* calculate the element whose hash handle address is hhe */
#define ELMT_FROM_HH(tbl,hhp) ((void*)(((char*)(hhp)) - ((tbl)->hho)))

#define HASH_FIND(hh,head,keyptr,keylen,out)                                     \
do {                                                                             \
  unsigned _hf_bkt,_hf_hashv;                                                    \
  out=NULL;                                                                      \
  if (head) {                                                                    \
     HASH_FCN(keyptr,keylen, (head)->hh.tbl->num_buckets, _hf_hashv, _hf_bkt);   \
     if (HASH_BLOOM_TEST((head)->hh.tbl, _hf_hashv)) {                           \
       HASH_FIND_IN_BKT((head)->hh.tbl, hh, (head)->hh.tbl->buckets[ _hf_bkt ],  \
                        keyptr,keylen,out);                                      \
     }                                                                           \
  }                                                                              \
} while (0)

#ifdef HASH_BLOOM
#define HASH_BLOOM_BITLEN (1ULL << HASH_BLOOM)
#define HASH_BLOOM_BYTELEN (HASH_BLOOM_BITLEN/8) + ((HASH_BLOOM_BITLEN%8) ? 1:0)
#define HASH_BLOOM_MAKE(tbl)                                                     \
do {                                                                             \
  (tbl)->bloom_nbits = HASH_BLOOM;                                               \
  (tbl)->bloom_bv = (uint8_t*)uthash_malloc(HASH_BLOOM_BYTELEN);                 \
  if (!((tbl)->bloom_bv))  { uthash_fatal( "out of memory"); }                   \
  memset((tbl)->bloom_bv, 0, 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)/8] |= (1U << ((idx)%8)))
#define HASH_BLOOM_BITTEST(bv,idx) (bv[(idx)/8] & (1U << ((idx)%8)))

#define HASH_BLOOM_ADD(tbl,hashv)                                                \
  HASH_BLOOM_BITSET((tbl)->bloom_bv, (hashv & (uint32_t)((1ULL << (tbl)->bloom_nbits) - 1)))

#define HASH_BLOOM_TEST(tbl,hashv)                                               \
  HASH_BLOOM_BITTEST((tbl)->bloom_bv, (hashv & (uint32_t)((1ULL << (tbl)->bloom_nbits) - 1)))

#else
#define HASH_BLOOM_MAKE(tbl) 
#define HASH_BLOOM_FREE(tbl) 
#define HASH_BLOOM_ADD(tbl,hashv) 
#define HASH_BLOOM_TEST(tbl,hashv) (1)
#endif

#define HASH_MAKE_TABLE(hh,head)                                                 \
do {                                                                             \
  (head)->hh.tbl = (UT_hash_table*)uthash_malloc(                                \
                  sizeof(UT_hash_table));                                        \
  if (!((head)->hh.tbl))  { uthash_fatal( "out of memory"); }                    \
  memset((head)->hh.tbl, 0, 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));               \
  if (! (head)->hh.tbl->buckets) { uthash_fatal( "out of memory"); }             \
  memset((head)->hh.tbl->buckets, 0,                                             \
          HASH_INITIAL_NUM_BUCKETS*sizeof(struct UT_hash_bucket));               \
  HASH_BLOOM_MAKE((head)->hh.tbl);                                               \
  (head)->hh.tbl->signature = HASH_SIGNATURE;                                    \
} while(0)

#define HASH_ADD(hh,head,fieldname,keylen_in,add)                                \
        HASH_ADD_KEYPTR(hh,head,&add->fieldname,keylen_in,add)
 
#define HASH_ADD_KEYPTR(hh,head,keyptr,keylen_in,add)                            \
do {                                                                             \
 unsigned _ha_bkt;                                                               \
 (add)->hh.next = NULL;                                                          \
 (add)->hh.key = (char*)keyptr;                                                  \
 (add)->hh.keylen = keylen_in;                                                   \
 if (!(head)) {                                                                  \
    head = (add);                                                                \
    (head)->hh.prev = NULL;                                                      \
    HASH_MAKE_TABLE(hh,head);                                                    \
 } else {                                                                        \
    (head)->hh.tbl->tail->next = (add);                                          \
    (add)->hh.prev = ELMT_FROM_HH((head)->hh.tbl, (head)->hh.tbl->tail);         \
    (head)->hh.tbl->tail = &((add)->hh);                                         \
 }                                                                               \
 (head)->hh.tbl->num_items++;                                                    \
 (add)->hh.tbl = (head)->hh.tbl;                                                 \
 HASH_FCN(keyptr,keylen_in, (head)->hh.tbl->num_buckets,                         \
         (add)->hh.hashv, _ha_bkt);                                              \
 HASH_ADD_TO_BKT((head)->hh.tbl->buckets[_ha_bkt],&(add)->hh);                   \
 HASH_BLOOM_ADD((head)->hh.tbl,(add)->hh.hashv);                                 \
 HASH_EMIT_KEY(hh,head,keyptr,keylen_in);                                        \
 HASH_FSCK(hh,head);                                                             \
} while(0)

#define HASH_TO_BKT( hashv, num_bkts, bkt )                                      \
do {                                                                             \
  bkt = ((hashv) & ((num_bkts) - 1));                                            \
} 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)                                              \
do {                                                                             \
    unsigned _hd_bkt;                                                            \
    struct UT_hash_handle *_hd_hh_del;                                           \
    if ( ((delptr)->hh.prev == NULL) && ((delptr)->hh.next == NULL) )  {         \
        uthash_free((head)->hh.tbl->buckets,                                     \
                    (head)->hh.tbl->num_buckets*sizeof(struct UT_hash_bucket) ); \
        HASH_BLOOM_FREE((head)->hh.tbl);                                         \
        uthash_free((head)->hh.tbl, sizeof(UT_hash_table));                      \
        head = NULL;                                                             \
    } else {                                                                     \
        _hd_hh_del = &((delptr)->hh);                                            \
        if ((delptr) == ELMT_FROM_HH((head)->hh.tbl,(head)->hh.tbl->tail)) {     \
            (head)->hh.tbl->tail =                                               \
                (UT_hash_handle*)((char*)((delptr)->hh.prev) +                   \
                (head)->hh.tbl->hho);                                            \
        }                                                                        \
        if ((delptr)->hh.prev) {                                                 \
            ((UT_hash_handle*)((char*)((delptr)->hh.prev) +                      \
                    (head)->hh.tbl->hho))->next = (delptr)->hh.next;             \
        } else {                                                                 \
            DECLTYPE_ASSIGN(head,(delptr)->hh.next);                             \
        }                                                                        \
        if (_hd_hh_del->next) {                                                  \
            ((UT_hash_handle*)((char*)_hd_hh_del->next +                         \
                    (head)->hh.tbl->hho))->prev =                                \
                    _hd_hh_del->prev;                                            \
        }                                                                        \
        HASH_TO_BKT( _hd_hh_del->hashv, (head)->hh.tbl->num_buckets, _hd_bkt);   \
        HASH_DEL_IN_BKT(hh,(head)->hh.tbl->buckets[_hd_bkt], _hd_hh_del);        \
        (head)->hh.tbl->num_items--;                                             \
    }                                                                            \
    HASH_FSCK(hh,head);                                                          \
} while (0)


/* convenience forms of HASH_FIND/HASH_ADD/HASH_DEL */
#define HASH_FIND_STR(head,findstr,out)                                          \
    HASH_FIND(hh,head,findstr,strlen(findstr),out)
#define HASH_ADD_STR(head,strfield,add)                                          \
    HASH_ADD(hh,head,strfield,strlen(add->strfield),add)
#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_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_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
#define HASH_OOPS(...) do { fprintf(stderr,__VA_ARGS__); exit(-1); } while (0)
#define HASH_FSCK(hh,head)                                                       \
do {                                                                             \
    unsigned _bkt_i;                                                             \
    unsigned _count, _bkt_count;                                                 \
    char *_prev;                                                                 \
    struct UT_hash_handle *_thh;                                                 \
    if (head) {                                                                  \
        _count = 0;                                                              \
        for( _bkt_i = 0; _bkt_i < (head)->hh.tbl->num_buckets; _bkt_i++) {       \
            _bkt_count = 0;                                                      \
            _thh = (head)->hh.tbl->buckets[_bkt_i].hh_head;                      \
            _prev = NULL;                                                        \
            while (_thh) {                                                       \
               if (_prev != (char*)(_thh->hh_prev)) {                            \
                   HASH_OOPS("invalid hh_prev %p, actual %p\n",                  \
                    _thh->hh_prev, _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("invalid bucket count %d, actual %d\n",                 \
                (head)->hh.tbl->buckets[_bkt_i].count, _bkt_count);              \
            }                                                                    \
        }                                                                        \
        if (_count != (head)->hh.tbl->num_items) {                               \
            HASH_OOPS("invalid hh item count %d, actual %d\n",                   \
                (head)->hh.tbl->num_items, _count );                             \
        }                                                                        \
        /* traverse hh in app order; check next/prev integrity, count */         \
        _count = 0;                                                              \
        _prev = NULL;                                                            \
        _thh =  &(head)->hh;                                                     \
        while (_thh) {                                                           \
           _count++;                                                             \
           if (_prev !=(char*)(_thh->prev)) {                                    \
              HASH_OOPS("invalid prev %p, actual %p\n",                          \
                    _thh->prev, _prev );                                         \
           }                                                                     \
           _prev = (char*)ELMT_FROM_HH((head)->hh.tbl, _thh);                    \
           _thh = ( _thh->next ?  (UT_hash_handle*)((char*)(_thh->next) +        \
                                  (head)->hh.tbl->hho) : NULL );                 \
        }                                                                        \
        if (_count != (head)->hh.tbl->num_items) {                               \
            HASH_OOPS("invalid app item count %d, actual %d\n",                  \
                (head)->hh.tbl->num_items, _count );                             \
        }                                                                        \
    }                                                                            \
} while (0)
#else
#define HASH_FSCK(hh,head) 
#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
#define HASH_EMIT_KEY(hh,head,keyptr,fieldlen)                                   \
do {                                                                             \
    unsigned _klen = fieldlen;                                                   \
    write(HASH_EMIT_KEYS, &_klen, sizeof(_klen));                                \
    write(HASH_EMIT_KEYS, keyptr, fieldlen);                                     \
} while (0)
#else 
#define HASH_EMIT_KEY(hh,head,keyptr,fieldlen)                    
#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 */
#define HASH_BER(key,keylen,num_bkts,hashv,bkt)                                  \
do {                                                                             \
  unsigned _hb_keylen=keylen;                                                    \
  char *_hb_key=(char*)(key);                                                    \
  (hashv) = 0;                                                                   \
  while (_hb_keylen--)  { (hashv) = ((hashv) * 33) + *_hb_key++; }               \
  bkt = (hashv) & (num_bkts-1);                                                  \
} while (0)


/* SAX/FNV/OAT/JEN hash functions are macro variants of those listed at 
 * http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx */
#define HASH_SAX(key,keylen,num_bkts,hashv,bkt)                                  \
do {                                                                             \
  unsigned _sx_i;                                                                \
  char *_hs_key=(char*)(key);                                                    \
  hashv = 0;                                                                     \
  for(_sx_i=0; _sx_i < keylen; _sx_i++)                                          \
      hashv ^= (hashv << 5) + (hashv >> 2) + _hs_key[_sx_i];                     \
  bkt = hashv & (num_bkts-1);                                                    \
} while (0)

#define HASH_FNV(key,keylen,num_bkts,hashv,bkt)                                  \
do {                                                                             \
  unsigned _fn_i;                                                                \
  char *_hf_key=(char*)(key);                                                    \
  hashv = 2166136261UL;                                                          \
  for(_fn_i=0; _fn_i < keylen; _fn_i++)                                          \
      hashv = (hashv * 16777619) ^ _hf_key[_fn_i];                               \
  bkt = hashv & (num_bkts-1);                                                    \
} while(0);
 
#define HASH_OAT(key,keylen,num_bkts,hashv,bkt)                                  \
do {                                                                             \
  unsigned _ho_i;                                                                \
  char *_ho_key=(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);                                                        \
  bkt = hashv & (num_bkts-1);                                                    \
} 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,num_bkts,hashv,bkt)                                  \
do {                                                                             \
  unsigned _hj_i,_hj_j,_hj_k;                                                    \
  char *_hj_key=(char*)(key);                                                    \
  hashv = 0xfeedbeef;                                                            \
  _hj_i = _hj_j = 0x9e3779b9;                                                    \
  _hj_k = keylen;                                                                \
  while (_hj_k >= 12) {                                                          \
    _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 -= 12;                                                                \
  }                                                                              \
  hashv += keylen;                                                               \
  switch ( _hj_k ) {                                                             \
     case 11: hashv += ( (unsigned)_hj_key[10] << 24 );                          \
     case 10: hashv += ( (unsigned)_hj_key[9] << 16 );                           \
     case 9:  hashv += ( (unsigned)_hj_key[8] << 8 );                            \
     case 8:  _hj_j += ( (unsigned)_hj_key[7] << 24 );                           \
     case 7:  _hj_j += ( (unsigned)_hj_key[6] << 16 );                           \
     case 6:  _hj_j += ( (unsigned)_hj_key[5] << 8 );                            \
     case 5:  _hj_j += _hj_key[4];                                               \
     case 4:  _hj_i += ( (unsigned)_hj_key[3] << 24 );                           \
     case 3:  _hj_i += ( (unsigned)_hj_key[2] << 16 );                           \
     case 2:  _hj_i += ( (unsigned)_hj_key[1] << 8 );                            \
     case 1:  _hj_i += _hj_key[0];                                               \
  }                                                                              \
  HASH_JEN_MIX(_hj_i, _hj_j, hashv);                                             \
  bkt = hashv & (num_bkts-1);                                                    \
} 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,num_bkts,hashv,bkt)                                  \
do {                                                                             \
  char *_sfh_key=(char*)(key);                                                   \
  uint32_t _sfh_tmp, _sfh_len = keylen;                                          \
                                                                                 \
  int _sfh_rem = _sfh_len & 3;                                                   \
  _sfh_len >>= 2;                                                                \
  hashv = 0xcafebabe;                                                            \
                                                                                 \
  /* Main loop */                                                                \
  for (;_sfh_len > 0; _sfh_len--) {                                              \
    hashv    += get16bits (_sfh_key);                                            \
    _sfh_tmp       = (get16bits (_sfh_key+2) << 11) ^ hashv;                     \
    hashv     = (hashv << 16) ^ _sfh_tmp;                                        \
    _sfh_key += 2*sizeof (uint16_t);                                             \
    hashv    += hashv >> 11;                                                     \
  }                                                                              \
                                                                                 \
  /* Handle end cases */                                                         \
  switch (_sfh_rem) {                                                            \
    case 3: hashv += get16bits (_sfh_key);                                       \
            hashv ^= hashv << 16;                                                \
            hashv ^= _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;                                                         \
    bkt = hashv & (num_bkts-1);                                                  \
} while(0);

#ifdef HASH_USING_NO_STRICT_ALIASING
/* The MurmurHash exploits some CPU's (e.g. x86) tolerance for unaligned reads.
 * For other types of CPU's (e.g. Sparc) an unaligned read causes a bus error.
 * So MurmurHash comes in two versions, the faster unaligned one and the slower
 * aligned one. We only use the faster one 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)
 */
#if (defined(__i386__) || defined(__x86_64__)) 
#define HASH_MUR HASH_MUR_UNALIGNED
#else
#define HASH_MUR HASH_MUR_ALIGNED
#endif

/* Appleby's MurmurHash fast version for unaligned-tolerant archs like i386 */
#define HASH_MUR_UNALIGNED(key,keylen,num_bkts,hashv,bkt)                        \
do {                                                                             \
  const unsigned int _mur_m = 0x5bd1e995;                                        \
  const int _mur_r = 24;                                                         \
  hashv = 0xcafebabe ^ keylen;                                                   \
  char *_mur_key = (char *)(key);                                                \
  uint32_t _mur_tmp, _mur_len = keylen;                                          \
                                                                                 \
  for (;_mur_len >= 4; _mur_len-=4) {                                            \
    _mur_tmp = *(uint32_t *)_mur_key;                                            \
    _mur_tmp *= _mur_m;                                                          \
    _mur_tmp ^= _mur_tmp >> _mur_r;                                              \
    _mur_tmp *= _mur_m;                                                          \
    hashv *= _mur_m;                                                             \
    hashv ^= _mur_tmp;                                                           \
    _mur_key += 4;                                                               \
  }                                                                              \
                                                                                 \
  switch(_mur_len)                                                               \
  {                                                                              \
    case 3: hashv ^= _mur_key[2] << 16;                                          \
    case 2: hashv ^= _mur_key[1] << 8;                                           \
    case 1: hashv ^= _mur_key[0];                                                \
            hashv *= _mur_m;                                                     \
  };                                                                             \
                                                                                 \
  hashv ^= hashv >> 13;                                                          \
  hashv *= _mur_m;                                                               \
  hashv ^= hashv >> 15;                                                          \
                                                                                 \
  bkt = hashv & (num_bkts-1);                                                    \
} while(0)

/* Appleby's MurmurHash version for alignment-sensitive archs like Sparc */
#define HASH_MUR_ALIGNED(key,keylen,num_bkts,hashv,bkt)                          \
do {                                                                             \
  const unsigned int _mur_m = 0x5bd1e995;                                        \
  const int _mur_r = 24;                                                         \
  hashv = 0xcafebabe ^ (keylen);                                                 \
  char *_mur_key = (char *)(key);                                                \
  uint32_t _mur_len = keylen;                                                    \
  int _mur_align = (int)_mur_key & 3;                                            \
                                                                                 \
  if (_mur_align && (_mur_len >= 4)) {                                           \
    unsigned _mur_t = 0, _mur_d = 0;                                             \
    switch(_mur_align) {                                                         \
      case 1: _mur_t |= _mur_key[2] << 16;                                       \
      case 2: _mur_t |= _mur_key[1] << 8;                                        \
      case 3: _mur_t |= _mur_key[0];                                             \
    }                                                                            \
    _mur_t <<= (8 * _mur_align);                                                 \
    _mur_key += 4-_mur_align;                                                    \
    _mur_len -= 4-_mur_align;                                                    \
    int _mur_sl = 8 * (4-_mur_align);                                            \
    int _mur_sr = 8 * _mur_align;                                                \
                                                                                 \
    for (;_mur_len >= 4; _mur_len-=4) {                                          \
      _mur_d = *(unsigned *)_mur_key;                                            \
      _mur_t = (_mur_t >> _mur_sr) | (_mur_d << _mur_sl);                        \
      unsigned _mur_k = _mur_t;                                                  \
      _mur_k *= _mur_m;                                                          \
      _mur_k ^= _mur_k >> _mur_r;                                                \
      _mur_k *= _mur_m;                                                          \
      hashv *= _mur_m;                                                           \
      hashv ^= _mur_k;                                                           \
      _mur_t = _mur_d;                                                           \
      _mur_key += 4;                                                             \
    }                                                                            \
    _mur_d = 0;                                                                  \
    if(_mur_len >= _mur_align) {                                                 \
      switch(_mur_align) {                                                       \
        case 3: _mur_d |= _mur_key[2] << 16;                                     \
        case 2: _mur_d |= _mur_key[1] << 8;                                      \
        case 1: _mur_d |= _mur_key[0];                                           \
      }                                                                          \
      unsigned _mur_k = (_mur_t >> _mur_sr) | (_mur_d << _mur_sl);               \
      _mur_k *= _mur_m;                                                          \
      _mur_k ^= _mur_k >> _mur_r;                                                \
      _mur_k *= _mur_m;                                                          \
      hashv *= _mur_m;                                                           \
      hashv ^= _mur_k;                                                           \
      _mur_k += _mur_align;                                                      \
      _mur_len -= _mur_align;                                                    \
                                                                                 \
      switch(_mur_len)                                                           \
      {                                                                          \
        case 3: hashv ^= _mur_key[2] << 16;                                      \
        case 2: hashv ^= _mur_key[1] << 8;                                       \
        case 1: hashv ^= _mur_key[0];                                            \
                hashv *= _mur_m;                                                 \
      }                                                                          \
    } else {                                                                     \
      switch(_mur_len)                                                           \
      {                                                                          \
        case 3: _mur_d ^= _mur_key[2] << 16;                                     \
        case 2: _mur_d ^= _mur_key[1] << 8;                                      \
        case 1: _mur_d ^= _mur_key[0];                                           \
        case 0: hashv ^= (_mur_t >> _mur_sr) | (_mur_d << _mur_sl);              \
        hashv *= _mur_m;                                                         \
      }                                                                          \
    }                                                                            \
                                                                                 \
    hashv ^= hashv >> 13;                                                        \
    hashv *= _mur_m;                                                             \
    hashv ^= hashv >> 15;                                                        \
  } else {                                                                       \
    for (;_mur_len >= 4; _mur_len-=4) {                                          \
      unsigned _mur_k = *(unsigned*)_mur_key;                                    \
      _mur_k *= _mur_m;                                                          \
      _mur_k ^= _mur_k >> _mur_r;                                                \
      _mur_k *= _mur_m;                                                          \
      hashv *= _mur_m;                                                           \
      hashv ^= _mur_k;                                                           \
      _mur_key += 4;                                                             \
    }                                                                            \
    switch(_mur_len)                                                             \
    {                                                                            \
      case 3: hashv ^= _mur_key[2] << 16;                                        \
      case 2: hashv ^= _mur_key[1] << 8;                                         \
      case 1: hashv ^= _mur_key[0];                                              \
      hashv *= _mur_m;                                                           \
    }                                                                            \
                                                                                 \
    hashv ^= hashv >> 13;                                                        \
    hashv *= _mur_m;                                                             \
    hashv ^= hashv >> 15;                                                        \
  }                                                                              \
  bkt = hashv & (num_bkts-1);                                                    \
} while(0)
#endif  /* HASH_USING_NO_STRICT_ALIASING */

/* key comparison function; return 0 if keys equal */
#define HASH_KEYCMP(a,b,len) memcmp(a,b,len) 

/* iterate over items in a known bucket to find desired item */
#define HASH_FIND_IN_BKT(tbl,hh,head,keyptr,keylen_in,out)                       \
do {                                                                             \
 if (head.hh_head) DECLTYPE_ASSIGN(out,ELMT_FROM_HH(tbl,head.hh_head));          \
 else out=NULL;                                                                  \
 while (out) {                                                                   \
    if (out->hh.keylen == keylen_in) {                                           \
        if ((HASH_KEYCMP(out->hh.key,keyptr,keylen_in)) == 0) break;             \
    }                                                                            \
    if (out->hh.hh_next) 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,addhh)                                              \
do {                                                                             \
 head.count++;                                                                   \
 (addhh)->hh_next = head.hh_head;                                                \
 (addhh)->hh_prev = NULL;                                                        \
 if (head.hh_head) { (head).hh_head->hh_prev = (addhh); }                        \
 (head).hh_head=addhh;                                                           \
 if (head.count >= ((head.expand_mult+1) * HASH_BKT_CAPACITY_THRESH)             \
     && (addhh)->tbl->noexpand != 1) {                                           \
       HASH_EXPAND_BUCKETS((addhh)->tbl);                                        \
 }                                                                               \
} while(0)

/* remove an item from a given bucket */
#define HASH_DEL_IN_BKT(hh,head,hh_del)                                          \
    (head).count--;                                                              \
    if ((head).hh_head == hh_del) {                                              \
      (head).hh_head = hh_del->hh_next;                                          \
    }                                                                            \
    if (hh_del->hh_prev) {                                                       \
        hh_del->hh_prev->hh_next = hh_del->hh_next;                              \
    }                                                                            \
    if (hh_del->hh_next) {                                                       \
        hh_del->hh_next->hh_prev = hh_del->hh_prev;                              \
    }                                                                

/* 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(tbl)                                                 \
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(                            \
             2 * tbl->num_buckets * sizeof(struct UT_hash_bucket));              \
    if (!_he_new_buckets) { uthash_fatal( "out of memory"); }                    \
    memset(_he_new_buckets, 0,                                                   \
            2 * tbl->num_buckets * sizeof(struct UT_hash_bucket));               \
    tbl->ideal_chain_maxlen =                                                    \
       (tbl->num_items >> (tbl->log2_num_buckets+1)) +                           \
       ((tbl->num_items & ((tbl->num_buckets*2)-1)) ? 1 : 0);                    \
    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) {                                                        \
           _he_hh_nxt = _he_thh->hh_next;                                        \
           HASH_TO_BKT( _he_thh->hashv, tbl->num_buckets*2, _he_bkt);            \
           _he_newbkt = &(_he_new_buckets[ _he_bkt ]);                           \
           if (++(_he_newbkt->count) > tbl->ideal_chain_maxlen) {                \
             tbl->nonideal_items++;                                              \
             _he_newbkt->expand_mult = _he_newbkt->count /                       \
                                        tbl->ideal_chain_maxlen;                 \
           }                                                                     \
           _he_thh->hh_prev = NULL;                                              \
           _he_thh->hh_next = _he_newbkt->hh_head;                               \
           if (_he_newbkt->hh_head) _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 *= 2;                                                       \
    tbl->log2_num_buckets++;                                                     \
    tbl->buckets = _he_new_buckets;                                              \
    tbl->ineff_expands = (tbl->nonideal_items > (tbl->num_items >> 1)) ?         \
        (tbl->ineff_expands+1) : 0;                                              \
    if (tbl->ineff_expands > 1) {                                                \
        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) {                                                                    \
      _hs_insize = 1;                                                            \
      _hs_looping = 1;                                                           \
      _hs_list = &((head)->hh);                                                  \
      while (_hs_looping) {                                                      \
          _hs_p = _hs_list;                                                      \
          _hs_list = NULL;                                                       \
          _hs_tail = NULL;                                                       \
          _hs_nmerges = 0;                                                       \
          while (_hs_p) {                                                        \
              _hs_nmerges++;                                                     \
              _hs_q = _hs_p;                                                     \
              _hs_psize = 0;                                                     \
              for ( _hs_i = 0; _hs_i  < _hs_insize; _hs_i++ ) {                  \
                  _hs_psize++;                                                   \
                  _hs_q = (UT_hash_handle*)((_hs_q->next) ?                      \
                          ((void*)((char*)(_hs_q->next) +                        \
                          (head)->hh.tbl->hho)) : NULL);                         \
                  if (! (_hs_q) ) break;                                         \
              }                                                                  \
              _hs_qsize = _hs_insize;                                            \
              while ((_hs_psize > 0) || ((_hs_qsize > 0) && _hs_q )) {           \
                  if (_hs_psize == 0) {                                          \
                      _hs_e = _hs_q;                                             \
                      _hs_q = (UT_hash_handle*)((_hs_q->next) ?                  \
                              ((void*)((char*)(_hs_q->next) +                    \
                              (head)->hh.tbl->hho)) : NULL);                     \
                      _hs_qsize--;                                               \
                  } else if ( (_hs_qsize == 0) || !(_hs_q) ) {                   \
                      _hs_e = _hs_p;                                             \
                      _hs_p = (UT_hash_handle*)((_hs_p->next) ?                  \
                              ((void*)((char*)(_hs_p->next) +                    \
                              (head)->hh.tbl->hho)) : 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;                                             \
                      _hs_p = (UT_hash_handle*)((_hs_p->next) ?                  \
                              ((void*)((char*)(_hs_p->next) +                    \
                              (head)->hh.tbl->hho)) : NULL);                     \
                      _hs_psize--;                                               \
                  } else {                                                       \
                      _hs_e = _hs_q;                                             \
                      _hs_q = (UT_hash_handle*)((_hs_q->next) ?                  \
                              ((void*)((char*)(_hs_q->next) +                    \
                              (head)->hh.tbl->hho)) : NULL);                     \
                      _hs_qsize--;                                               \
                  }                                                              \
                  if ( _hs_tail ) {                                              \
                      _hs_tail->next = ((_hs_e) ?                                \
                            ELMT_FROM_HH((head)->hh.tbl,_hs_e) : NULL);          \
                  } else {                                                       \
                      _hs_list = _hs_e;                                          \
                  }                                                              \
                  _hs_e->prev = ((_hs_tail) ?                                    \
                     ELMT_FROM_HH((head)->hh.tbl,_hs_tail) : NULL);              \
                  _hs_tail = _hs_e;                                              \
              }                                                                  \
              _hs_p = _hs_q;                                                     \
          }                                                                      \
          _hs_tail->next = NULL;                                                 \
          if ( _hs_nmerges <= 1 ) {                                              \
              _hs_looping=0;                                                     \
              (head)->hh.tbl->tail = _hs_tail;                                   \
              DECLTYPE_ASSIGN(head,ELMT_FROM_HH((head)->hh.tbl, _hs_list));      \
          }                                                                      \
          _hs_insize *= 2;                                                       \
      }                                                                          \
      HASH_FSCK(hh,head);                                                        \
 }                                                                               \
} 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) {                                                                     \
    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;                                                               \
          _src_hh = _src_hh->hh_next) {                                          \
          _elt = ELMT_FROM_HH((src)->hh_src.tbl, _src_hh);                       \
          if (cond(_elt)) {                                                      \
            _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) { _last_elt_hh->next = _elt; }                     \
            if (!dst) {                                                          \
              DECLTYPE_ASSIGN(dst,_elt);                                         \
              HASH_MAKE_TABLE(hh_dst,dst);                                       \
            } 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],_dst_hh);            \
            (dst)->hh_dst.tbl->num_items++;                                      \
            _last_elt = _elt;                                                    \
            _last_elt_hh = _dst_hh;                                              \
          }                                                                      \
      }                                                                          \
    }                                                                            \
  }                                                                              \
  HASH_FSCK(hh_dst,dst);                                                         \
} while (0)

#define HASH_CLEAR(hh,head)                                                      \
do {                                                                             \
  if (head) {                                                                    \
    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)

#ifdef NO_DECLTYPE
#define HASH_ITER(hh,head,el,tmp)                                                \
for((el)=(head), (*(char**)(&(tmp)))=(char*)((head)?(head)->hh.next:NULL);       \
  el; (el)=(tmp),(*(char**)(&(tmp)))=(char*)((tmp)?(tmp)->hh.next:NULL)) 
#else
#define HASH_ITER(hh,head,el,tmp)                                                \
for((el)=(head),(tmp)=DECLTYPE(el)((head)?(head)->hh.next:NULL);                 \
  el; (el)=(tmp),(tmp)=DECLTYPE(el)((tmp)?(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)?((head)->hh.tbl->num_items):0)

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 0xa0111fe1
#define HASH_BLOOM_SIGNATURE 0xb12220f2

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;
   char 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        */
   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 */


context:
space:
mode: