xref: /illumos-gate/usr/src/tools/smatch/src/cwchash/hashtable_private.h (revision 1f5207b7604fb44407eb4342aff613f7c4508508)
1 /* Copyright (C) 2002, 2004 Christopher Clark <firstname.lastname@cl.cam.ac.uk> */
2 
3 #ifndef __HASHTABLE_PRIVATE_CWC22_H__
4 #define __HASHTABLE_PRIVATE_CWC22_H__
5 
6 #include "hashtable.h"
7 
8 /*****************************************************************************/
9 struct entry
10 {
11     void *k, *v;
12     unsigned int h;
13     struct entry *next;
14 };
15 
16 struct hashtable {
17     unsigned int tablelength;
18     struct entry **table;
19     unsigned int entrycount;
20     unsigned int loadlimit;
21     unsigned int primeindex;
22     unsigned int (*hashfn) (void *k);
23     int (*eqfn) (void *k1, void *k2);
24 };
25 
26 /*****************************************************************************/
27 unsigned int
28 hash(struct hashtable *h, void *k);
29 
30 /*****************************************************************************/
31 /* indexFor */
32 static inline unsigned int
indexFor(unsigned int tablelength,unsigned int hashvalue)33 indexFor(unsigned int tablelength, unsigned int hashvalue) {
34     return (hashvalue % tablelength);
35 };
36 
37 /* Only works if tablelength == 2^N */
38 /*static inline unsigned int
39 indexFor(unsigned int tablelength, unsigned int hashvalue)
40 {
41     return (hashvalue & (tablelength - 1u));
42 }
43 */
44 
45 /*****************************************************************************/
46 #define freekey(X) free(X)
47 /*define freekey(X) ; */
48 
49 
50 /*****************************************************************************/
51 
52 #endif /* __HASHTABLE_PRIVATE_CWC22_H__*/
53 
54 /*
55  * Copyright (c) 2002, Christopher Clark
56  * All rights reserved.
57  *
58  * Redistribution and use in source and binary forms, with or without
59  * modification, are permitted provided that the following conditions
60  * are met:
61  *
62  * * Redistributions of source code must retain the above copyright
63  * notice, this list of conditions and the following disclaimer.
64  *
65  * * Redistributions in binary form must reproduce the above copyright
66  * notice, this list of conditions and the following disclaimer in the
67  * documentation and/or other materials provided with the distribution.
68  *
69  * * Neither the name of the original author; nor the names of any contributors
70  * may be used to endorse or promote products derived from this software
71  * without specific prior written permission.
72  *
73  *
74  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
75  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
76  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
77  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER
78  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
79  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
80  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
81  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
82  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
83  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
84  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
85 */
86