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      1 /*
      2  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
      3  * All Rights Reserved.
      4  *
      5  * Permission is hereby granted, free of charge, to any person obtaining a
      6  * copy of this software and associated documentation files (the "Software"),
      7  * to deal in the Software without restriction, including without limitation
      8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      9  * and/or sell copies of the Software, and to permit persons to whom the
     10  * Software is furnished to do so, subject to the following conditions:
     11  *
     12  * The above copyright notice and this permission notice (including the next
     13  * paragraph) shall be included in all copies or substantial portions of the
     14  * 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
     19  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     22  * DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Rickard E. (Rik) Faith <faith (at) valinux.com>
     25  */
     26 
     27 #define HASH_SIZE  512		/* Good for about 100 entries */
     28 				/* If you change this value, you probably
     29                                    have to change the HashHash hashing
     30                                    function! */
     31 
     32 typedef struct HashBucket {
     33     unsigned long     key;
     34     void              *value;
     35     struct HashBucket *next;
     36 } HashBucket, *HashBucketPtr;
     37 
     38 typedef struct HashTable {
     39     unsigned long    magic;
     40     unsigned long    entries;
     41     unsigned long    hits;	/* At top of linked list */
     42     unsigned long    partials;	/* Not at top of linked list */
     43     unsigned long    misses;	/* Not in table */
     44     HashBucketPtr    buckets[HASH_SIZE];
     45     int              p0;
     46     HashBucketPtr    p1;
     47 } HashTable, *HashTablePtr;
     48