hash.h (2145B)
1 /* $Id: //depot/blt/include/blt/hash.h#3 $ 2 ** 3 ** Copyright 1999 Sidney Cammeresi. 4 ** All rights reserved. 5 ** 6 ** Redistribution and use in source and binary forms, with or without 7 ** modification, are permitted provided that the following conditions 8 ** are met: 9 ** 10 ** 1. Redistributions of source code must retain the above copyright notice, 11 ** this list of conditions and the following disclaimer. 12 ** 13 ** 2. Redistributions in binary form must reproduce the above copyright 14 ** notice, this list of conditions and the following disclaimer in the 15 ** documentation and/or other materials provided with the distribution. 16 ** 17 ** 3. The name of the author may not be used to endorse or promote products 18 ** derived from this software without specific prior written permission. 19 ** 20 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS' AND ANY EXPRESS OR IMPLIED 21 ** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 22 ** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 23 ** NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 25 ** TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 26 ** PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 27 ** LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 28 ** NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29 ** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _BLT_HASH_H_ 33 #define _BLT_HASH_H_ 34 35 typedef struct 36 { 37 int valid, dirty, key, dsize; 38 void *data; 39 } hashnode_t; 40 41 typedef struct 42 { 43 hashnode_t *table; 44 int size_index, used, dirty; 45 float max_load; 46 } hashtable_t; 47 48 #ifdef __cplusplus 49 extern "C" { 50 #endif 51 52 hashtable_t *hashtable_new (float max_load); 53 void hashtable_del (hashtable_t *t); 54 void hashtable_insert (hashtable_t *t, int key, void *data, int dsize); 55 void *hashtable_lookup (hashtable_t *t, int key, int *dsize); 56 void *hashtable_remove (hashtable_t *t, int key, int *dsize); 57 void hashtable_print (hashtable_t *t); 58 59 #ifdef __cplusplus 60 } 61 #endif 62 63 64 #endif 65