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[/] [igor/] [trunk/] [simulator/] [hash.h] - Rev 4
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/* * Copyright (c) 2007 Eirik A. Nygaard <eirikald@pvv.ntnu.no> * * 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. * */ #ifndef _HASH_H_ #define _HASH_H_ typedef unsigned long hash; typedef hash (*hash_hash)(const void *key); typedef hash (*hash_cmp)(const void *k1, const void *k2); struct hash_bucket { void *key; void *value; hash hash; } *h_bucket; typedef struct { struct hash_bucket *h_bucket; hash_hash h_hash; hash_cmp h_cmp; unsigned long h_size, h_used; float h_threshold; } hash_t; hash_t *_hash_create(hash_cmp cmp, hash_hash hash, unsigned long size, float threshold); void hash_destroy(hash_t *h, int freevalue); int _hash_insert(hash_t *h, void *key, void *value); int _hash_remove(hash_t *h, void *key, int freevalue); void *_hash_lookup(hash_t *h, const void *key); #define HASH_DECLARE(name, hcmp, hhash, keytype, valuetype) \ hash_t * name ## _create (hash size, float threshold) { return _hash_create((hash_cmp)hcmp, (hash_hash)hhash, size, threshold); } \ int name ## _insert (hash_t *h, keytype * key, valuetype * value) { return _hash_insert(h, key, value); } \ int name ## _remove (hash_t *h, keytype * key, int freevalue) { return _hash_remove(h, key, freevalue); } \ valuetype * name ## _lookup (hash_t *h, const keytype * key) { return _hash_lookup(h, key); } #define HASH_DEFINE(name, hcmp, hhash, keytype, valuetype) \ hash_t * name ## _create (hash size, float threshold); \ int name ## _insert (hash_t *h, keytype * key, valuetype * value); \ int name ## _remove (hash_t *h, keytype * key, int freevalue); \ valuetype * name ## _lookup (hash_t *h, const keytype * key); #endif /* _HASH_H_ */