khash.h (21542B)
1 /* The MIT License 2 3 Copyright (c) 2008, 2009, 2011 by Attractive Chaos <attractor@live.co.uk> 4 5 Permission is hereby granted, free of charge, to any person obtaining 6 a copy of this software and associated documentation files (the 7 "Software"), to deal in the Software without restriction, including 8 without limitation the rights to use, copy, modify, merge, publish, 9 distribute, sublicense, and/or sell copies of the Software, and to 10 permit persons to whom the Software is furnished to do so, subject to 11 the following conditions: 12 13 The above copyright notice and this permission notice shall be 14 included in all copies or substantial portions of the Software. 15 16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 17 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 18 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 20 BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 21 ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 23 SOFTWARE. 24 */ 25 26 /* 27 An example: 28 29 #include "khash.h" 30 KHASH_MAP_INIT_INT(32, char) 31 int main() { 32 int ret, is_missing; 33 khiter_t k; 34 khash_t(32) *h = kh_init(32); 35 k = kh_put(32, h, 5, &ret); 36 kh_value(h, k) = 10; 37 k = kh_get(32, h, 10); 38 is_missing = (k == kh_end(h)); 39 k = kh_get(32, h, 5); 40 kh_del(32, h, k); 41 for (k = kh_begin(h); k != kh_end(h); ++k) 42 if (kh_exist(h, k)) kh_value(h, k) = 1; 43 kh_destroy(32, h); 44 return 0; 45 } 46 */ 47 48 /* 49 2013-05-02 (0.2.8): 50 51 * Use quadratic probing. When the capacity is power of 2, stepping function 52 i*(i+1)/2 guarantees to traverse each bucket. It is better than double 53 hashing on cache performance and is more robust than linear probing. 54 55 In theory, double hashing should be more robust than quadratic probing. 56 However, my implementation is probably not for large hash tables, because 57 the second hash function is closely tied to the first hash function, 58 which reduce the effectiveness of double hashing. 59 60 Reference: http://research.cs.vt.edu/AVresearch/hashing/quadratic.php 61 62 2011-12-29 (0.2.7): 63 64 * Minor code clean up; no actual effect. 65 66 2011-09-16 (0.2.6): 67 68 * The capacity is a power of 2. This seems to dramatically improve the 69 speed for simple keys. Thank Zilong Tan for the suggestion. Reference: 70 71 - http://code.google.com/p/ulib/ 72 - http://nothings.org/computer/judy/ 73 74 * Allow to optionally use linear probing which usually has better 75 performance for random input. Double hashing is still the default as it 76 is more robust to certain non-random input. 77 78 * Added Wang's integer hash function (not used by default). This hash 79 function is more robust to certain non-random input. 80 81 2011-02-14 (0.2.5): 82 83 * Allow to declare global functions. 84 85 2009-09-26 (0.2.4): 86 87 * Improve portability 88 89 2008-09-19 (0.2.3): 90 91 * Corrected the example 92 * Improved interfaces 93 94 2008-09-11 (0.2.2): 95 96 * Improved speed a little in kh_put() 97 98 2008-09-10 (0.2.1): 99 100 * Added kh_clear() 101 * Fixed a compiling error 102 103 2008-09-02 (0.2.0): 104 105 * Changed to token concatenation which increases flexibility. 106 107 2008-08-31 (0.1.2): 108 109 * Fixed a bug in kh_get(), which has not been tested previously. 110 111 2008-08-31 (0.1.1): 112 113 * Added destructor 114 */ 115 116 117 #ifndef __AC_KHASH_H 118 #define __AC_KHASH_H 119 120 /*! 121 @header 122 123 Generic hash table library. 124 */ 125 126 #define AC_VERSION_KHASH_H "0.2.8" 127 128 #include <stdlib.h> 129 #include <string.h> 130 #include <limits.h> 131 132 /* compiler specific configuration */ 133 134 #if UINT_MAX == 0xffffffffu 135 typedef unsigned int khint32_t; 136 #elif ULONG_MAX == 0xffffffffu 137 typedef unsigned long khint32_t; 138 #endif 139 140 #if ULONG_MAX == ULLONG_MAX 141 typedef unsigned long khint64_t; 142 #else 143 typedef unsigned long long khint64_t; 144 #endif 145 146 #ifndef kh_inline 147 #ifdef _MSC_VER 148 #define kh_inline __inline 149 #else 150 #define kh_inline inline 151 #endif 152 #endif /* kh_inline */ 153 154 #ifndef klib_unused 155 #if (defined __clang__ && __clang_major__ >= 3) || (defined __GNUC__ && __GNUC__ >= 3) 156 #define klib_unused __attribute__ ((__unused__)) 157 #else 158 #define klib_unused 159 #endif 160 #endif /* klib_unused */ 161 162 typedef khint32_t khint_t; 163 typedef khint_t khiter_t; 164 165 #define __ac_isempty(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&2) 166 #define __ac_isdel(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&1) 167 #define __ac_iseither(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&3) 168 #define __ac_set_isdel_false(flag, i) (flag[i>>4]&=~(1ul<<((i&0xfU)<<1))) 169 #define __ac_set_isempty_false(flag, i) (flag[i>>4]&=~(2ul<<((i&0xfU)<<1))) 170 #define __ac_set_isboth_false(flag, i) (flag[i>>4]&=~(3ul<<((i&0xfU)<<1))) 171 #define __ac_set_isdel_true(flag, i) (flag[i>>4]|=1ul<<((i&0xfU)<<1)) 172 173 #define __ac_fsize(m) ((m) < 16? 1 : (m)>>4) 174 175 #ifndef kroundup32 176 #define kroundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x)) 177 #endif 178 179 #ifndef kcalloc 180 #define kcalloc(N,Z) calloc(N,Z) 181 #endif 182 #ifndef kmalloc 183 #define kmalloc(Z) malloc(Z) 184 #endif 185 #ifndef krealloc 186 #define krealloc(P,Z) realloc(P,Z) 187 #endif 188 #ifndef kfree 189 #define kfree(P) free(P) 190 #endif 191 192 static const double __ac_HASH_UPPER = 0.77; 193 194 #define __KHASH_TYPE(name, khkey_t, khval_t) \ 195 typedef struct kh_##name##_s { \ 196 khint_t n_buckets, size, n_occupied, upper_bound; \ 197 khint32_t *flags; \ 198 khkey_t *keys; \ 199 khval_t *vals; \ 200 } kh_##name##_t; 201 202 #define __KHASH_PROTOTYPES(name, khkey_t, khval_t) \ 203 extern kh_##name##_t *kh_init_##name(void); \ 204 extern void kh_destroy_##name(kh_##name##_t *h); \ 205 extern void kh_clear_##name(kh_##name##_t *h); \ 206 extern khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key); \ 207 extern int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets); \ 208 extern khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret); \ 209 extern void kh_del_##name(kh_##name##_t *h, khint_t x); 210 211 #define __KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \ 212 SCOPE kh_##name##_t *kh_init_##name(void) { \ 213 return (kh_##name##_t*)kcalloc(1, sizeof(kh_##name##_t)); \ 214 } \ 215 SCOPE void kh_destroy_##name(kh_##name##_t *h) \ 216 { \ 217 if (h) { \ 218 kfree((void *)h->keys); kfree(h->flags); \ 219 kfree((void *)h->vals); \ 220 kfree(h); \ 221 } \ 222 } \ 223 SCOPE void kh_clear_##name(kh_##name##_t *h) \ 224 { \ 225 if (h && h->flags) { \ 226 memset(h->flags, 0xaa, __ac_fsize(h->n_buckets) * sizeof(khint32_t)); \ 227 h->size = h->n_occupied = 0; \ 228 } \ 229 } \ 230 SCOPE khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key) \ 231 { \ 232 if (h->n_buckets) { \ 233 khint_t k, i, last, mask, step = 0; \ 234 mask = h->n_buckets - 1; \ 235 k = __hash_func(key); i = k & mask; \ 236 last = i; \ 237 while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \ 238 i = (i + (++step)) & mask; \ 239 if (i == last) return h->n_buckets; \ 240 } \ 241 return __ac_iseither(h->flags, i)? h->n_buckets : i; \ 242 } else return 0; \ 243 } \ 244 SCOPE int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets) \ 245 { /* This function uses 0.25*n_buckets bytes of working space instead of [sizeof(key_t+val_t)+.25]*n_buckets. */ \ 246 khint32_t *new_flags = 0; \ 247 khint_t j = 1; \ 248 { \ 249 kroundup32(new_n_buckets); \ 250 if (new_n_buckets < 4) new_n_buckets = 4; \ 251 if (h->size >= (khint_t)(new_n_buckets * __ac_HASH_UPPER + 0.5)) j = 0; /* requested size is too small */ \ 252 else { /* hash table size to be changed (shrink or expand); rehash */ \ 253 new_flags = (khint32_t*)kmalloc(__ac_fsize(new_n_buckets) * sizeof(khint32_t)); \ 254 if (!new_flags) return -1; \ 255 memset(new_flags, 0xaa, __ac_fsize(new_n_buckets) * sizeof(khint32_t)); \ 256 if (h->n_buckets < new_n_buckets) { /* expand */ \ 257 khkey_t *new_keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \ 258 if (!new_keys) { kfree(new_flags); return -1; } \ 259 h->keys = new_keys; \ 260 if (kh_is_map) { \ 261 khval_t *new_vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \ 262 if (!new_vals) { kfree(new_flags); return -1; } \ 263 h->vals = new_vals; \ 264 } \ 265 } /* otherwise shrink */ \ 266 } \ 267 } \ 268 if (j) { /* rehashing is needed */ \ 269 for (j = 0; j != h->n_buckets; ++j) { \ 270 if (__ac_iseither(h->flags, j) == 0) { \ 271 khkey_t key = h->keys[j]; \ 272 khval_t val; \ 273 khint_t new_mask; \ 274 new_mask = new_n_buckets - 1; \ 275 if (kh_is_map) val = h->vals[j]; \ 276 __ac_set_isdel_true(h->flags, j); \ 277 while (1) { /* kick-out process; sort of like in Cuckoo hashing */ \ 278 khint_t k, i, step = 0; \ 279 k = __hash_func(key); \ 280 i = k & new_mask; \ 281 while (!__ac_isempty(new_flags, i)) i = (i + (++step)) & new_mask; \ 282 __ac_set_isempty_false(new_flags, i); \ 283 if (i < h->n_buckets && __ac_iseither(h->flags, i) == 0) { /* kick out the existing element */ \ 284 { khkey_t tmp = h->keys[i]; h->keys[i] = key; key = tmp; } \ 285 if (kh_is_map) { khval_t tmp = h->vals[i]; h->vals[i] = val; val = tmp; } \ 286 __ac_set_isdel_true(h->flags, i); /* mark it as deleted in the old hash table */ \ 287 } else { /* write the element and jump out of the loop */ \ 288 h->keys[i] = key; \ 289 if (kh_is_map) h->vals[i] = val; \ 290 break; \ 291 } \ 292 } \ 293 } \ 294 } \ 295 if (h->n_buckets > new_n_buckets) { /* shrink the hash table */ \ 296 h->keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \ 297 if (kh_is_map) h->vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \ 298 } \ 299 kfree(h->flags); /* free the working space */ \ 300 h->flags = new_flags; \ 301 h->n_buckets = new_n_buckets; \ 302 h->n_occupied = h->size; \ 303 h->upper_bound = (khint_t)(h->n_buckets * __ac_HASH_UPPER + 0.5); \ 304 } \ 305 return 0; \ 306 } \ 307 SCOPE khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret) \ 308 { \ 309 khint_t x; \ 310 if (h->n_occupied >= h->upper_bound) { /* update the hash table */ \ 311 if (h->n_buckets > (h->size<<1)) { \ 312 if (kh_resize_##name(h, h->n_buckets - 1) < 0) { /* clear "deleted" elements */ \ 313 *ret = -1; return h->n_buckets; \ 314 } \ 315 } else if (kh_resize_##name(h, h->n_buckets + 1) < 0) { /* expand the hash table */ \ 316 *ret = -1; return h->n_buckets; \ 317 } \ 318 } /* TODO: to implement automatically shrinking; resize() already support shrinking */ \ 319 { \ 320 khint_t k, i, site, last, mask = h->n_buckets - 1, step = 0; \ 321 x = site = h->n_buckets; k = __hash_func(key); i = k & mask; \ 322 if (__ac_isempty(h->flags, i)) x = i; /* for speed up */ \ 323 else { \ 324 last = i; \ 325 while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \ 326 if (__ac_isdel(h->flags, i)) site = i; \ 327 i = (i + (++step)) & mask; \ 328 if (i == last) { x = site; break; } \ 329 } \ 330 if (x == h->n_buckets) { \ 331 if (__ac_isempty(h->flags, i) && site != h->n_buckets) x = site; \ 332 else x = i; \ 333 } \ 334 } \ 335 } \ 336 if (__ac_isempty(h->flags, x)) { /* not present at all */ \ 337 h->keys[x] = key; \ 338 __ac_set_isboth_false(h->flags, x); \ 339 ++h->size; ++h->n_occupied; \ 340 *ret = 1; \ 341 } else if (__ac_isdel(h->flags, x)) { /* deleted */ \ 342 h->keys[x] = key; \ 343 __ac_set_isboth_false(h->flags, x); \ 344 ++h->size; \ 345 *ret = 2; \ 346 } else *ret = 0; /* Don't touch h->keys[x] if present and not deleted */ \ 347 return x; \ 348 } \ 349 SCOPE void kh_del_##name(kh_##name##_t *h, khint_t x) \ 350 { \ 351 if (x != h->n_buckets && !__ac_iseither(h->flags, x)) { \ 352 __ac_set_isdel_true(h->flags, x); \ 353 --h->size; \ 354 } \ 355 } 356 357 #define KHASH_DECLARE(name, khkey_t, khval_t) \ 358 __KHASH_TYPE(name, khkey_t, khval_t) \ 359 __KHASH_PROTOTYPES(name, khkey_t, khval_t) 360 361 #define KHASH_INIT2(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \ 362 __KHASH_TYPE(name, khkey_t, khval_t) \ 363 __KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) 364 365 #define KHASH_INIT(name, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \ 366 KHASH_INIT2(name, static kh_inline klib_unused, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) 367 368 /* --- BEGIN OF HASH FUNCTIONS --- */ 369 370 /*! @function 371 @abstract Integer hash function 372 @param key The integer [khint32_t] 373 @return The hash value [khint_t] 374 */ 375 #define kh_int_hash_func(key) (khint32_t)(key) 376 /*! @function 377 @abstract Integer comparison function 378 */ 379 #define kh_int_hash_equal(a, b) ((a) == (b)) 380 /*! @function 381 @abstract 64-bit integer hash function 382 @param key The integer [khint64_t] 383 @return The hash value [khint_t] 384 */ 385 #define kh_int64_hash_func(key) (khint32_t)((key)>>33^(key)^(key)<<11) 386 /*! @function 387 @abstract 64-bit integer comparison function 388 */ 389 #define kh_int64_hash_equal(a, b) ((a) == (b)) 390 /*! @function 391 @abstract const char* hash function 392 @param s Pointer to a null terminated string 393 @return The hash value 394 */ 395 static kh_inline khint_t __ac_X31_hash_string(const char *s) 396 { 397 khint_t h = (khint_t)*s; 398 if (h) for (++s ; *s; ++s) h = (h << 5) - h + (khint_t)*s; 399 return h; 400 } 401 /*! @function 402 @abstract Another interface to const char* hash function 403 @param key Pointer to a null terminated string [const char*] 404 @return The hash value [khint_t] 405 */ 406 #define kh_str_hash_func(key) __ac_X31_hash_string(key) 407 /*! @function 408 @abstract Const char* comparison function 409 */ 410 #define kh_str_hash_equal(a, b) (strcmp(a, b) == 0) 411 412 static kh_inline khint_t __ac_Wang_hash(khint_t key) 413 { 414 key += ~(key << 15); 415 key ^= (key >> 10); 416 key += (key << 3); 417 key ^= (key >> 6); 418 key += ~(key << 11); 419 key ^= (key >> 16); 420 return key; 421 } 422 #define kh_int_hash_func2(key) __ac_Wang_hash((khint_t)key) 423 424 /* --- END OF HASH FUNCTIONS --- */ 425 426 /* Other convenient macros... */ 427 428 /*! 429 @abstract Type of the hash table. 430 @param name Name of the hash table [symbol] 431 */ 432 #define khash_t(name) kh_##name##_t 433 434 /*! @function 435 @abstract Initiate a hash table. 436 @param name Name of the hash table [symbol] 437 @return Pointer to the hash table [khash_t(name)*] 438 */ 439 #define kh_init(name) kh_init_##name() 440 441 /*! @function 442 @abstract Destroy a hash table. 443 @param name Name of the hash table [symbol] 444 @param h Pointer to the hash table [khash_t(name)*] 445 */ 446 #define kh_destroy(name, h) kh_destroy_##name(h) 447 448 /*! @function 449 @abstract Reset a hash table without deallocating memory. 450 @param name Name of the hash table [symbol] 451 @param h Pointer to the hash table [khash_t(name)*] 452 */ 453 #define kh_clear(name, h) kh_clear_##name(h) 454 455 /*! @function 456 @abstract Resize a hash table. 457 @param name Name of the hash table [symbol] 458 @param h Pointer to the hash table [khash_t(name)*] 459 @param s New size [khint_t] 460 */ 461 #define kh_resize(name, h, s) kh_resize_##name(h, s) 462 463 /*! @function 464 @abstract Insert a key to the hash table. 465 @param name Name of the hash table [symbol] 466 @param h Pointer to the hash table [khash_t(name)*] 467 @param k Key [type of keys] 468 @param r Extra return code: -1 if the operation failed; 469 0 if the key is present in the hash table; 470 1 if the bucket is empty (never used); 2 if the element in 471 the bucket has been deleted [int*] 472 @return Iterator to the inserted element [khint_t] 473 */ 474 #define kh_put(name, h, k, r) kh_put_##name(h, k, r) 475 476 /*! @function 477 @abstract Retrieve a key from the hash table. 478 @param name Name of the hash table [symbol] 479 @param h Pointer to the hash table [khash_t(name)*] 480 @param k Key [type of keys] 481 @return Iterator to the found element, or kh_end(h) if the element is absent [khint_t] 482 */ 483 #define kh_get(name, h, k) kh_get_##name(h, k) 484 485 /*! @function 486 @abstract Remove a key from the hash table. 487 @param name Name of the hash table [symbol] 488 @param h Pointer to the hash table [khash_t(name)*] 489 @param k Iterator to the element to be deleted [khint_t] 490 */ 491 #define kh_del(name, h, k) kh_del_##name(h, k) 492 493 /*! @function 494 @abstract Test whether a bucket contains data. 495 @param h Pointer to the hash table [khash_t(name)*] 496 @param x Iterator to the bucket [khint_t] 497 @return 1 if containing data; 0 otherwise [int] 498 */ 499 #define kh_exist(h, x) (!__ac_iseither((h)->flags, (x))) 500 501 /*! @function 502 @abstract Get key given an iterator 503 @param h Pointer to the hash table [khash_t(name)*] 504 @param x Iterator to the bucket [khint_t] 505 @return Key [type of keys] 506 */ 507 #define kh_key(h, x) ((h)->keys[x]) 508 509 /*! @function 510 @abstract Get value given an iterator 511 @param h Pointer to the hash table [khash_t(name)*] 512 @param x Iterator to the bucket [khint_t] 513 @return Value [type of values] 514 @discussion For hash sets, calling this results in segfault. 515 */ 516 #define kh_val(h, x) ((h)->vals[x]) 517 518 /*! @function 519 @abstract Alias of kh_val() 520 */ 521 #define kh_value(h, x) ((h)->vals[x]) 522 523 /*! @function 524 @abstract Get the start iterator 525 @param h Pointer to the hash table [khash_t(name)*] 526 @return The start iterator [khint_t] 527 */ 528 #define kh_begin(h) (khint_t)(0) 529 530 /*! @function 531 @abstract Get the end iterator 532 @param h Pointer to the hash table [khash_t(name)*] 533 @return The end iterator [khint_t] 534 */ 535 #define kh_end(h) ((h)->n_buckets) 536 537 /*! @function 538 @abstract Get the number of elements in the hash table 539 @param h Pointer to the hash table [khash_t(name)*] 540 @return Number of elements in the hash table [khint_t] 541 */ 542 #define kh_size(h) ((h)->size) 543 544 /*! @function 545 @abstract Get the number of buckets in the hash table 546 @param h Pointer to the hash table [khash_t(name)*] 547 @return Number of buckets in the hash table [khint_t] 548 */ 549 #define kh_n_buckets(h) ((h)->n_buckets) 550 551 /*! @function 552 @abstract Iterate over the entries in the hash table 553 @param h Pointer to the hash table [khash_t(name)*] 554 @param kvar Variable to which key will be assigned 555 @param vvar Variable to which value will be assigned 556 @param code Block of code to execute 557 */ 558 #define kh_foreach(h, kvar, vvar, code) { khint_t __i; \ 559 for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \ 560 if (!kh_exist(h,__i)) continue; \ 561 (kvar) = kh_key(h,__i); \ 562 (vvar) = kh_val(h,__i); \ 563 code; \ 564 } } 565 566 /*! @function 567 @abstract Iterate over the values in the hash table 568 @param h Pointer to the hash table [khash_t(name)*] 569 @param vvar Variable to which value will be assigned 570 @param code Block of code to execute 571 */ 572 #define kh_foreach_value(h, vvar, code) { khint_t __i; \ 573 for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \ 574 if (!kh_exist(h,__i)) continue; \ 575 (vvar) = kh_val(h,__i); \ 576 code; \ 577 } } 578 579 /* More conenient interfaces */ 580 581 /*! @function 582 @abstract Instantiate a hash set containing integer keys 583 @param name Name of the hash table [symbol] 584 */ 585 #define KHASH_SET_INIT_INT(name) \ 586 KHASH_INIT(name, khint32_t, char, 0, kh_int_hash_func, kh_int_hash_equal) 587 588 /*! @function 589 @abstract Instantiate a hash map containing integer keys 590 @param name Name of the hash table [symbol] 591 @param khval_t Type of values [type] 592 */ 593 #define KHASH_MAP_INIT_INT(name, khval_t) \ 594 KHASH_INIT(name, khint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal) 595 596 /*! @function 597 @abstract Instantiate a hash map containing 64-bit integer keys 598 @param name Name of the hash table [symbol] 599 */ 600 #define KHASH_SET_INIT_INT64(name) \ 601 KHASH_INIT(name, khint64_t, char, 0, kh_int64_hash_func, kh_int64_hash_equal) 602 603 /*! @function 604 @abstract Instantiate a hash map containing 64-bit integer keys 605 @param name Name of the hash table [symbol] 606 @param khval_t Type of values [type] 607 */ 608 #define KHASH_MAP_INIT_INT64(name, khval_t) \ 609 KHASH_INIT(name, khint64_t, khval_t, 1, kh_int64_hash_func, kh_int64_hash_equal) 610 611 typedef const char *kh_cstr_t; 612 /*! @function 613 @abstract Instantiate a hash map containing const char* keys 614 @param name Name of the hash table [symbol] 615 */ 616 #define KHASH_SET_INIT_STR(name) \ 617 KHASH_INIT(name, kh_cstr_t, char, 0, kh_str_hash_func, kh_str_hash_equal) 618 619 /*! @function 620 @abstract Instantiate a hash map containing const char* keys 621 @param name Name of the hash table [symbol] 622 @param khval_t Type of values [type] 623 */ 624 #define KHASH_MAP_INIT_STR(name, khval_t) \ 625 KHASH_INIT(name, kh_cstr_t, khval_t, 1, kh_str_hash_func, kh_str_hash_equal) 626 627 #endif /* __AC_KHASH_H */