nostrdb

an unfairly fast embedded nostr database backed by lmdb
git clone git://jb55.com/nostrdb
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token_map.c (1818B)


      1 /*
      2  * The MIT License (MIT)
      3  *
      4  * Copyright (c) 2015 Mikkel F. Jørgensen, dvide.com
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a copy
      7  * of this software and associated documentation files (the "Software"), to deal
      8  * in the Software without restriction, including without limitation the rights
      9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     10  * copies of the Software, and to permit persons to whom the Software is
     11  * furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in all
     14  * copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     22  * SOFTWARE.
     23  */
     24 
     25 #include <string.h>
     26 
     27 /* These are just example settings. */
     28 
     29 #include "token_map.h"
     30 #define HT_LOAD_FACTOR 0.85
     31 /* Quadratic probing is ignored with Robin Hood hashing. */
     32 #define HT_PROBE_QUADRATIC
     33 #include "hash_table_def.h"
     34 DEFINE_HASH_TABLE(token_map)
     35 #if defined(TOKEN_MAP_RH)
     36 #include "hash_table_impl_rh.h"
     37 #else
     38 #include "hash_table_impl.h"
     39 #endif
     40 
     41 static inline const void *ht_key(ht_item_t item)
     42 {
     43     return item->token;
     44 }
     45 
     46 static inline size_t ht_key_len(ht_item_t item)
     47 {
     48     return item->len;
     49 }
     50 
     51 static inline int ht_match(const void *key, size_t len, ht_item_t item)
     52 {
     53     return len == item->len && memcmp(key, item->token, len) == 0;
     54 }