/* The MIT License Copyright (c) 2008, by Attractive Chaos Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /* Changes, 2011-2012: proprietary header added, with proprietary memory management functions. */ /* An example: #include "khash.h" KHASH_MAP_INIT_INT(32, char) int main() { int ret, is_missing; khiter_t k; khash_t(32) *h = kh_init(32); k = kh_put(32, h, 5, &ret); if (!ret) kh_del(32, h, k); kh_value(h, k) = 10; k = kh_get(32, h, 10); is_missing = (k == kh_end(h)); k = kh_get(32, h, 5); kh_del(32, h, k); for (k = kh_begin(h); k != kh_end(h); ++k) if (kh_exist(h, k)) kh_value(h, k) = 1; kh_destroy(32, h); return 0; } */ /* 2008-09-19 (0.2.3): * Corrected the example * Improved interfaces 2008-09-11 (0.2.2): * Improved speed a little in kh_put() 2008-09-10 (0.2.1): * Added kh_clear() * Fixed a compiling error 2008-09-02 (0.2.0): * Changed to token concatenation which increases flexibility. 2008-08-31 (0.1.2): * Fixed a bug in kh_get(), which has not been tested previously. 2008-08-31 (0.1.1): * Added destructor */ #ifndef __AC_KHASH_H #define __AC_KHASH_H #define AC_VERSION_KHASH_H "0.2.2" #include "ns_turn_defs.h" typedef uint32_t khint_t; typedef khint_t khiter_t; typedef struct _str_chunk_t { const char *str; size_t len; } str_chunk_t; #define __ac_HASH_PRIME_SIZE 32 static const uint32_t __ac_prime_list[__ac_HASH_PRIME_SIZE] = { 0ul, 3ul, 11ul, 23ul, 53ul, 97ul, 193ul, 389ul, 769ul, 1543ul, 3079ul, 6151ul, 12289ul, 24593ul, 49157ul, 98317ul, 196613ul, 393241ul, 786433ul, 1572869ul, 3145739ul, 6291469ul, 12582917ul, 25165843ul, 50331653ul, 100663319ul, 201326611ul, 402653189ul, 805306457ul, 1610612741ul, 3221225473ul, 4294967291ul }; #define __ac_isempty(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&2) #define __ac_isdel(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&1) #define __ac_iseither(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&3) #define __ac_set_isdel_false(flag, i) (flag[i>>4]&=~(1ul<<((i&0xfU)<<1))) #define __ac_set_isempty_false(flag, i) (flag[i>>4]&=~(2ul<<((i&0xfU)<<1))) #define __ac_set_isboth_false(flag, i) (flag[i>>4]&=~(3ul<<((i&0xfU)<<1))) #define __ac_set_isdel_true(flag, i) (flag[i>>4]|=1ul<<((i&0xfU)<<1)) static const double __ac_HASH_UPPER = 0.77; #define KHASH_INIT(name, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \ typedef struct { \ khint_t n_buckets, size, n_occupied, upper_bound; \ uint32_t *flags; uint32_t flags_size; \ khkey_t *keys; uint32_t keys_size; \ khval_t *vals; uint32_t vals_size; \ } kh_##name##_t; \ static inline kh_##name##_t *kh_init_##name(void) { \ return (kh_##name##_t*)calloc(1, sizeof(kh_##name##_t)); \ } \ static inline void kh_destroy_##name(kh_##name##_t *h) \ { \ if (h) { \ free(h->keys); free(h->flags); \ free(h->vals); \ free(h); \ } \ } \ static inline void kh_clear_##name(kh_##name##_t *h) \ { \ if (h && h->flags) { \ memset(h->flags, 0xaa, ((h->n_buckets>>4) + 1) * sizeof(uint32_t)); \ h->size = h->n_occupied = 0; \ } \ } \ static inline khint_t kh_get_##name(kh_##name##_t *h, khkey_t key) \ { \ if (h->n_buckets) { \ khint_t inc, k, i, last; \ k = __hash_func(key); i = k % h->n_buckets; \ inc = 1 + k % (h->n_buckets - 1); last = i; \ while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \ if (i + inc >= h->n_buckets) i = i + inc - h->n_buckets; \ else i += inc; \ if (i == last) return h->n_buckets; \ } \ return __ac_iseither(h->flags, i)? h->n_buckets : i; \ } else return 0; \ } \ static inline void kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets) \ { \ uint32_t *new_flags = 0; \ uint32_t new_flags_size = 0; \ khint_t j = 1; \ { \ khint_t t = __ac_HASH_PRIME_SIZE - 1; \ while (__ac_prime_list[t] > new_n_buckets) --t; \ new_n_buckets = __ac_prime_list[t+1]; \ if (h->size >= (khint_t)(new_n_buckets * __ac_HASH_UPPER + 0.5)) j = 0; \ else { \ new_flags_size = ((new_n_buckets>>4) + 1) * sizeof(uint32_t); \ new_flags = (uint32_t*)malloc(new_flags_size); \ memset(new_flags, 0xaa, new_flags_size); \ if (h->n_buckets < new_n_buckets) { \ h->keys = (khkey_t*)realloc(h->keys, new_n_buckets * sizeof(khkey_t)); \ h->keys_size = new_n_buckets * sizeof(khkey_t); \ if (kh_is_map) { \ h->vals = (khval_t*)realloc(h->vals, new_n_buckets * sizeof(khval_t)); \ h->vals_size = new_n_buckets * sizeof(khval_t); \ } \ } \ } \ } \ if (j) { \ for (j = 0; j != h->n_buckets; ++j) { \ if (__ac_iseither(h->flags, j) == 0) { \ khkey_t key = h->keys[j]; \ khval_t val; \ if (kh_is_map) val = h->vals[j]; \ __ac_set_isdel_true(h->flags, j); \ while (1) { \ khint_t inc, k, i; \ k = __hash_func(key); \ i = k % new_n_buckets; \ inc = 1 + k % (new_n_buckets - 1); \ while (!__ac_isempty(new_flags, i)) { \ if (i + inc >= new_n_buckets) i = i + inc - new_n_buckets; \ else i += inc; \ } \ __ac_set_isempty_false(new_flags, i); \ if (i < h->n_buckets && __ac_iseither(h->flags, i) == 0) { \ { khkey_t tmp = h->keys[i]; h->keys[i] = key; key = tmp; } \ if (kh_is_map) { khval_t tmp = h->vals[i]; h->vals[i] = val; val = tmp; } \ __ac_set_isdel_true(h->flags, i); \ } else { \ h->keys[i] = key; \ if (kh_is_map) h->vals[i] = val; \ break; \ } \ } \ } \ } \ if (h->n_buckets > new_n_buckets) { \ h->keys = (khkey_t*)realloc(h->keys, new_n_buckets * sizeof(khkey_t)); \ h->keys_size = new_n_buckets * sizeof(khkey_t); \ if (kh_is_map) { \ h->vals = (khval_t*)realloc(h->vals, new_n_buckets * sizeof(khval_t)); \ h->vals_size = new_n_buckets * sizeof(khval_t); \ } \ } \ free(h->flags); \ h->flags = new_flags; \ h->flags_size = new_flags_size; \ h->n_buckets = new_n_buckets; \ h->n_occupied = h->size; \ h->upper_bound = (khint_t)(h->n_buckets * __ac_HASH_UPPER + 0.5); \ } \ } \ static inline khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret) \ { \ khint_t x; \ if (h->n_occupied >= h->upper_bound) { \ if (h->n_buckets > (h->size<<1)) kh_resize_##name(h, h->n_buckets - 1); \ else kh_resize_##name(h, h->n_buckets + 1); \ } \ { \ khint_t inc, k, i, site, last; \ x = site = h->n_buckets; k = __hash_func(key); i = k % h->n_buckets; \ if (__ac_isempty(h->flags, i)) x = i; \ else { \ inc = 1 + k % (h->n_buckets - 1); last = i; \ while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \ if (__ac_isdel(h->flags, i)) site = i; \ if (i + inc >= h->n_buckets) i = i + inc - h->n_buckets; \ else i += inc; \ if (i == last) { x = site; break; } \ } \ if (x == h->n_buckets) { \ if (__ac_isempty(h->flags, i) && site != h->n_buckets) x = site; \ else x = i; \ } \ } \ } \ if (__ac_isempty(h->flags, x)) { \ h->keys[x] = key; \ __ac_set_isboth_false(h->flags, x); \ ++h->size; ++h->n_occupied; \ *ret = 1; \ } else if (__ac_isdel(h->flags, x)) { \ h->keys[x] = key; \ __ac_set_isboth_false(h->flags, x); \ ++h->size; \ *ret = 2; \ } else *ret = 0; \ return x; \ } \ static inline void kh_del_##name(kh_##name##_t *h, khint_t x) \ { \ if (x != h->n_buckets && !__ac_iseither(h->flags, x)) { \ __ac_set_isdel_true(h->flags, x); \ --h->size; \ } \ } /* --- BEGIN OF HASH FUNCTIONS --- */ #define kh_int_hash_func(key) (uint32_t)((key<<3) + nswap32(key>>7)) #define kh_int_hash_equal(a, b) (a == b) #define kh_int64_hash_func(key) (uint32_t)((key)>>33^(key)^(key)<<11) #define kh_int64_hash_equal(a, b) (a == b) static inline khint_t __ac_X31_hash_string(const char *s) { khint_t h = *s; if (h) for (++s; *s; ++s) h = (h << 5) - h + *s; return h; } static inline khint_t __ac_X31_hash_cstring(const char *s) { khint_t h = tolower((int)*s); if (h) for (++s; *s; ++s) h = (h << 5) - h + tolower((int)*s); return h; } static inline khint_t __ac_X31_hash_nstring(const str_chunk_t *s) { khint_t h = *(s->str); if (h) { size_t i; for (i = 0; i < s->len; i++) h = (h << 5) - h + s->str[i]; } return h; } static inline khint_t __ac_X31_hash_ncstring(const str_chunk_t *s) { khint_t h = tolower((int)(*(s->str))); if (h) { size_t i; for (i = 0; i < s->len; i++) h = (h << 5) - h + tolower((int)(s->str[i])); } return h; } #define kh_str_hash_func(key) __ac_X31_hash_string(key) #define kh_str_hash_equal(a, b) (strcmp(a, b) == 0) #define kh_cstr_hash_func(key) __ac_X31_hash_cstring(key) #define kh_cstr_hash_equal(a, b) (strcasecmp(a, b) == 0) #define kh_nstr_hash_func(key) __ac_X31_hash_nstring(key) #define kh_nstr_hash_equal(a, b) (a->len == b->len && (strncmp(a->str, b->str, a->len) == 0)) #define kh_ncstr_hash_func(key) __ac_X31_hash_ncstring(key) #define kh_ncstr_hash_equal(a, b) (a->len == b->len && (strncasecmp(a->str, b->str, a->len) == 0)) /* --- END OF HASH FUNCTIONS --- */ /* Other necessary macros... */ #define khash_t(name) kh_##name##_t #define kh_init(name) kh_init_##name() #define kh_destroy(name, h) kh_destroy_##name(h) #define kh_clear(name, h) kh_clear_##name(h) #define kh_resize(name, h, s) kh_resize_##name(h, s) #define kh_put(name, h, k, r) kh_put_##name(h, k, r) #define kh_get(name, h, k) kh_get_##name(h, k) #define kh_del(name, h, k) kh_del_##name(h, k) #define kh_exist(h, x) (!__ac_iseither((h)->flags, (x))) #define kh_key(h, x) ((h)->keys[x]) #define kh_val(h, x) ((h)->vals[x]) #define kh_value(h, x) ((h)->vals[x]) #define kh_begin(h) (khint_t)(0) #define kh_end(h) ((h)->n_buckets) #define kh_size(h) ((h)->size) #define kh_n_buckets(h) ((h)->n_buckets) /* More convenient interfaces */ #define KHASH_SET_INIT_INT(name) \ KHASH_INIT(name, uint32_t, char, 0, kh_int_hash_func, kh_int_hash_equal) #define KHASH_MAP_INIT_INT(name, khval_t) \ KHASH_INIT(name, uint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal) #define KHASH_SET_INIT_INT64(name) \ KHASH_INIT(name, uint64_t, char, 0, kh_int64_hash_func, kh_int64_hash_equal) #define KHASH_MAP_INIT_INT64(name, khval_t) \ KHASH_INIT(name, uint64_t, khval_t, 1, kh_int64_hash_func, kh_int64_hash_equal) typedef const char *kh_cstr_t; typedef const str_chunk_t *kh_ncstr_t; #define KHASH_SET_INIT_STR(name) \ KHASH_INIT(name, kh_cstr_t, char, 0, kh_str_hash_func, kh_str_hash_equal) #define KHASH_MAP_INIT_STR(name, khval_t) \ KHASH_INIT(name, kh_cstr_t, khval_t, 1, kh_str_hash_func, kh_str_hash_equal) #define KHASH_SET_INIT_CSTR(name) \ KHASH_INIT(name, kh_cstr_t, char, 0, kh_cstr_hash_func, kh_cstr_hash_equal) #define KHASH_MAP_INIT_CSTR(name, khval_t) \ KHASH_INIT(name, kh_cstr_t, khval_t, 1, kh_cstr_hash_func, kh_cstr_hash_equal) #define KHASH_SET_INIT_NSTR(name) \ KHASH_INIT(name, kh_ncstr_t, char, 0, kh_nstr_hash_func, kh_nstr_hash_equal) #define KHASH_MAP_INIT_NSTR(name, khval_t) \ KHASH_INIT(name, kh_ncstr_t, khval_t, 1, kh_nstr_hash_func, kh_nstr_hash_equal) #define KHASH_SET_INIT_NCSTR(name) \ KHASH_INIT(name, kh_ncstr_t, char, 0, kh_ncstr_hash_func, kh_ncstr_hash_equal) #define KHASH_MAP_INIT_NCSTR(name, khval_t) \ KHASH_INIT(name, kh_ncstr_t, khval_t, 1, kh_ncstr_hash_func, kh_ncstr_hash_equal) ////////////////////////////////////////////// #endif /* __AC_KHASH_H */