diff options
Diffstat (limited to 'src/ritehash.h')
| -rw-r--r-- | src/ritehash.h | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/src/ritehash.h b/src/ritehash.h deleted file mode 100644 index a17db425a..000000000 --- a/src/ritehash.h +++ /dev/null @@ -1,204 +0,0 @@ -/* -** ritehash.c - Rite Hash for mruby -** -** See Copyright Notice in mruby.h -*/ - -#include <stdint.h> -#include <stdlib.h> -#include <string.h> - -typedef uint32_t khint_t; -typedef khint_t khiter_t; - -#define INITIAL_HASH_SIZE 32 -#define UPPER_BOUND(x) ((x)>>2|(x>>1)) - -//extern uint8_t __m[]; - -/* mask for flags */ -static uint8_t __m[8] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80}; - - -#define __ac_isempty(e_flag, d_flag, i) (e_flag[(i)/8]&__m[(i)%8]) -#define __ac_isdel(e_flag, d_flag, i) (d_flag[(i)/8]&__m[(i)%8]) -#define __ac_iseither(e_flag, d_flag, i) (__ac_isempty(e_flag,d_flag,i)||__ac_isdel(e_flag,d_flag,i)) - - -/* struct kh_xxx - - name: ash name - khkey_t: key data type - khval_t: value data type - kh_is_map: (not implemented / not used in RiteVM ) - __hash_func: hash function - __hash_equal: hash comparation function -*/ -#define KHASH_INIT(name, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \ - typedef struct kh_##name { \ - khint_t n_buckets; \ - khint_t size; \ - khint_t n_occupied; \ - khint_t upper_bound; \ - uint8_t *e_flags; \ - uint8_t *d_flags; \ - khkey_t *keys; \ - khval_t *vals; \ - khint_t mask; \ - khint_t inc; \ - mrb_state *mrb; \ - } kh_##name##_t; \ - static void kh_alloc_##name(kh_##name##_t *h) \ - { \ - khint_t sz = h->n_buckets; \ - h->size = h->n_occupied = 0; \ - h->upper_bound = UPPER_BOUND(sz); \ - h->e_flags = (uint8_t *)mrb_malloc(h->mrb, sizeof(uint8_t)*sz/4); \ - h->d_flags = h->e_flags + sz/8; \ - memset(h->e_flags, 0xff, sz/8*sizeof(uint8_t)); \ - memset(h->d_flags, 0x00, sz/8*sizeof(uint8_t)); \ - h->keys = (khkey_t *)mrb_malloc(h->mrb, sizeof(khkey_t)*sz); \ - h->vals = (khval_t *)mrb_malloc(h->mrb, sizeof(khval_t)*sz); \ - h->mask = sz-1; \ - h->inc = sz/2-1; \ - } \ - static inline kh_##name##_t *kh_init_##name(mrb_state *mrb){ \ - kh_##name##_t *h = (kh_##name##_t*)mrb_calloc(mrb, 1, sizeof(kh_##name##_t)); \ - h->n_buckets = INITIAL_HASH_SIZE; \ - h->mrb = mrb; \ - kh_alloc_##name(h); \ - return h; \ - } \ - static inline void kh_destroy_##name(kh_##name##_t *h) \ - { \ - if( h ){ \ - mrb_free(h->mrb, h->keys); \ - mrb_free(h->mrb, h->vals); \ - mrb_free(h->mrb, h->e_flags); \ - mrb_free(h->mrb, h); \ - } \ - } \ - static inline void kh_clear_##name(kh_##name##_t *h) \ - { \ - if( h && h->e_flags ){ \ - memset(h->e_flags, 0xff, h->n_buckets/8*sizeof(uint8_t)); \ - memset(h->d_flags, 0x00, h->n_buckets/8*sizeof(uint8_t)); \ - h->size = h->n_occupied = 0; \ - } \ - } \ - static inline khint_t kh_get_##name(kh_##name##_t *h, khkey_t key) \ - { \ - khint_t k = __hash_func(h->mrb,key) & (h->mask); \ - while( !__ac_isempty(h->e_flags, h->d_flags, k) ){ \ - if( !__ac_isdel(h->e_flags, h->d_flags, k) ){ \ - if( __hash_equal(h->mrb,h->keys[k], key) ) return k; \ - } \ - k = (k+h->inc) & (h->mask); \ - } \ - return h->n_buckets; \ - } \ - static inline khint_t kh_put_##name(kh_##name##_t *h, khkey_t key); \ - static void kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets) \ - { \ - if( new_n_buckets<INITIAL_HASH_SIZE ){ \ - new_n_buckets = INITIAL_HASH_SIZE; \ - } else { \ - khint_t limit = new_n_buckets; \ - new_n_buckets = INITIAL_HASH_SIZE; \ - while( new_n_buckets < limit ) new_n_buckets *= 2; \ - } \ - uint8_t *old_e_flags = h->e_flags; \ - uint8_t *old_d_flags = h->d_flags; \ - khkey_t *old_keys = h->keys; \ - khval_t *old_vals = h->vals; \ - khint_t old_n_buckets = h->n_buckets; \ - h->n_buckets = new_n_buckets; \ - kh_alloc_##name(h); \ - /* relocate */ \ - khint_t i; \ - for( i=0 ; i<old_n_buckets ; i++ ){ \ - if( !__ac_isempty(old_e_flags, old_d_flags, i) ){ \ - khint_t k = kh_put_##name(h, old_keys[i]); \ - kh_value(h,k) = old_vals[i]; \ - } \ - } \ - } \ - static inline khint_t kh_put_##name(kh_##name##_t *h, khkey_t key) \ - { \ - khint_t k; \ - if( h->n_occupied >= h->upper_bound ){ \ - kh_resize_##name(h, h->n_buckets*2); \ - } \ - k = __hash_func(h->mrb,key) & (h->mask); \ - while( !__ac_iseither(h->e_flags, h->d_flags, k) ){ \ - if( __hash_equal(h->mrb,h->keys[k], key) ) break; \ - k = (k+h->inc) & (h->mask); \ - } \ - if( __ac_isempty(h->e_flags, h->d_flags, k) ) { \ - /* put at empty */ \ - h->keys[k] = key; \ - h->e_flags[k/8] &= ~__m[k%8]; \ - h->size++; \ - h->n_occupied++; \ - } else if( __ac_isdel(h->e_flags, h->d_flags, k) ) { \ - /* put at del */ \ - h->keys[k] = key; \ - h->d_flags[k/8] &= ~__m[k%8]; \ - h->size++; \ - } \ - return k; \ - } \ - static inline void kh_del_##name(kh_##name##_t *h, khint_t x) \ - { \ - h->d_flags[x/8] |= __m[x%8]; \ - h->size--; \ - } \ - static inline void kh_debug_##name(kh_##name##_t *h) \ - { \ - khint_t i; \ - printf("idx:e_flag:d_flag\n"); \ - for( i=0 ; i<h->n_buckets/8 ; i++ ){ \ - printf("%4d:%02X:%02X\n", i, h->e_flags[i], h->d_flags[i]); \ - } \ - } \ - -#define khash_t(name) kh_##name##_t - -#define kh_init(name,mrb) kh_init_##name(mrb) -#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) -#define kh_get(name, h, k) kh_get_##name(h, k) -#define kh_del(name, h, k) kh_del_##name(h, k) -#define kh_debug(name, h) kh_debug_##name(h) - -#define kh_exist(h, x) (!__ac_iseither((h)->e_flags, (h)->d_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) - -//#define kh_int_hash_func(mrb,key) (uint32_t)(key) -#define kh_int_hash_func(mrb,key) (uint32_t)((key)^((key)<<2)^((key)>>2)) -#define kh_int_hash_equal(mrb,a, b) (a == b) -#define kh_int64_hash_func(mrb,key) (uint32_t)((key)>>33^(key)^(key)<<11) -#define kh_int64_hash_equal(mrb,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; -} -#define kh_str_hash_func(mrb,key) __ac_X31_hash_string(key) -#define kh_str_hash_equal(mrb,a, b) (strcmp(a, b) == 0) - -#define KHASH_MAP_INIT_INT(name, khval_t) \ - KHASH_INIT(name, uint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal) -typedef const char *kh_cstr_t; -#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) - |
