1 /*
2    Copyright (C) 2003, 2005, 2006 MySQL AB
3     All rights reserved. Use is subject to license terms.
4 
5    This program is free software; you can redistribute it and/or modify
6    it under the terms of the GNU General Public License, version 2.0,
7    as published by the Free Software Foundation.
8 
9    This program is also distributed with certain software (including
10    but not limited to OpenSSL) that is licensed under separate terms,
11    as designated in a particular file or component or in included license
12    documentation.  The authors of MySQL hereby grant you an additional
13    permission to link the program and your derivative works with the
14    separately licensed software that they have included with MySQL.
15 
16    This program is distributed in the hope that it will be useful,
17    but WITHOUT ANY WARRANTY; without even the implied warranty of
18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19    GNU General Public License, version 2.0, for more details.
20 
21    You should have received a copy of the GNU General Public License
22    along with this program; if not, write to the Free Software
23    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
24 */
25 
26 #ifndef RANDOM_H
27 #define RANDOM_H
28 
29 /***************************************************************
30 * I N C L U D E D   F I L E S                                  *
31 ***************************************************************/
32 
33 /***************************************************************
34 * M A C R O S                                                  *
35 ***************************************************************/
36 
37 /***************************************************************/
38 /* C O N S T A N T S                                           */
39 /***************************************************************/
40 
41 
42 /***************************************************************
43 * D A T A   S T R U C T U R E S                                *
44 ***************************************************************/
45 
46 typedef struct {
47    unsigned int  length;
48    unsigned int *values;
49    unsigned int  currentIndex;
50 }RandomSequence;
51 
52 typedef struct {
53    unsigned int length;
54    unsigned int value;
55 }SequenceValues;
56 
57 /***************************************************************
58 * P U B L I C    F U N C T I O N S                             *
59 ***************************************************************/
60 
61 #ifdef __cplusplus
62 extern "C" {
63 #endif
64 
65 
66 extern double getTps(unsigned int count, double timeValue);
67 
68 /*----------------------------*/
69 /* Random Sequences Functions */
70 /*----------------------------*/
71 extern int  initSequence(RandomSequence *seq, SequenceValues *inputValues);
72 extern unsigned int getNextRandom(RandomSequence *seq);
73 extern void printSequence(RandomSequence *seq, unsigned int numPerRow);
74 
75 /*---------------------------------------------------*/
76 /* Code from the glibc, to make sure the same random */
77 /* number generator is used by all                   */
78 /*---------------------------------------------------*/
79 extern void myRandom48Init(long int seedval);
80 extern long int myRandom48(unsigned int maxValue);
81 
82 #ifdef __cplusplus
83 }
84 #endif
85 
86 /***************************************************************
87 * E X T E R N A L   D A T A                                    *
88 ***************************************************************/
89 
90 
91 
92 #endif /* RANDOM_H */
93 
94