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      1  6212  aw148015 /*
      2  6212  aw148015  * CDDL HEADER START
      3  6212  aw148015  *
      4  6212  aw148015  * The contents of this file are subject to the terms of the
      5  6212  aw148015  * Common Development and Distribution License (the "License").
      6  6212  aw148015  * You may not use this file except in compliance with the License.
      7  6212  aw148015  *
      8  6212  aw148015  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  6212  aw148015  * or http://www.opensolaris.org/os/licensing.
     10  6212  aw148015  * See the License for the specific language governing permissions
     11  6212  aw148015  * and limitations under the License.
     12  6212  aw148015  *
     13  6212  aw148015  * When distributing Covered Code, include this CDDL HEADER in each
     14  6212  aw148015  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  6212  aw148015  * If applicable, add the following below this CDDL HEADER, with the
     16  6212  aw148015  * fields enclosed by brackets "[]" replaced with your own identifying
     17  6212  aw148015  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  6212  aw148015  *
     19  6212  aw148015  * CDDL HEADER END
     20  6212  aw148015  */
     21  6212  aw148015 /*
     22  6212  aw148015  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     23  6212  aw148015  * Use is subject to license terms.
     24  6212  aw148015  */
     25  6212  aw148015 
     26  6212  aw148015 #ifndef _FB_RANDOM_H
     27  6212  aw148015 #define	_FB_RANDOM_H
     28  6212  aw148015 
     29  6212  aw148015 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     30  6212  aw148015 
     31  6212  aw148015 #include "config.h"
     32  6212  aw148015 
     33  6212  aw148015 #ifdef HAVE_STDINT_H
     34  6212  aw148015 #include <stdint.h>
     35  6212  aw148015 #endif
     36  6212  aw148015 
     37  6212  aw148015 #ifdef	__cplusplus
     38  6212  aw148015 extern "C" {
     39  6212  aw148015 #endif
     40  6212  aw148015 
     41  6212  aw148015 /*
     42  6212  aw148015  * probability table entry, used while parsing the supplied
     43  6212  aw148015  * probability table
     44  6212  aw148015  */
     45  6212  aw148015 typedef struct probtabent {
     46  6212  aw148015 	struct probtabent	*pte_next;
     47  6212  aw148015 	avd_t			pte_percent;
     48  6212  aw148015 	avd_t			pte_segmin;
     49  6212  aw148015 	avd_t			pte_segmax;
     50  6212  aw148015 } probtabent_t;
     51  6212  aw148015 
     52  6212  aw148015 /*
     53  6212  aw148015  * The supplied probability table is converted into a probability funtion
     54  6212  aw148015  * lookup table at initialization time. This is the definition for each
     55  6212  aw148015  * entry in the table.
     56  6212  aw148015  */
     57  6212  aw148015 typedef struct randfunc {
     58  6212  aw148015 	double		rf_base;
     59  6212  aw148015 	double		rf_range;
     60  6212  aw148015 } randfunc_t;
     61  6212  aw148015 
     62  6212  aw148015 /* Number of entries in the probability function table */
     63  6212  aw148015 #define	PF_TAB_SIZE	100
     64  6212  aw148015 
     65  6212  aw148015 /*
     66  6212  aw148015  * Random Distribution definition object. Includes a pointer to the
     67  6212  aw148015  * appropriate function to access the distribution defined by the object,
     68  6212  aw148015  * as well as a function pointer to the specified source of random
     69  6212  aw148015  * numbers.
     70  6212  aw148015  */
     71  6212  aw148015 typedef struct randdist {
     72  6212  aw148015 	double		(*rnd_get)(struct randdist *);
     73  6212  aw148015 	double		(*rnd_src)(unsigned short *);
     74  6212  aw148015 	struct randdist *rnd_next;
     75  6212  aw148015 	struct var	*rnd_var;
     76  6212  aw148015 	avd_t		rnd_seed;
     77  6212  aw148015 	avd_t		rnd_mean;
     78  6212  aw148015 	avd_t		rnd_gamma;
     79  6212  aw148015 	avd_t		rnd_min;
     80  6212  aw148015 	avd_t		rnd_round;
     81  6212  aw148015 	double		rnd_dbl_mean;
     82  6212  aw148015 	double		rnd_dbl_gamma;
     83  6212  aw148015 	fbint_t		rnd_vint_min;
     84  6212  aw148015 	fbint_t		rnd_vint_round;
     85  6212  aw148015 	probtabent_t	*rnd_probtabs;
     86  6212  aw148015 	randfunc_t	rnd_rft[PF_TAB_SIZE];
     87  6212  aw148015 	uint16_t	rnd_xi[3];
     88  6212  aw148015 	uint16_t	rnd_type;
     89  6212  aw148015 } randdist_t;
     90  6212  aw148015 
     91  6212  aw148015 #define	RAND_TYPE_UNIFORM	0x1
     92  6212  aw148015 #define	RAND_TYPE_GAMMA		0x2
     93  6212  aw148015 #define	RAND_TYPE_TABLE		0x3
     94  6212  aw148015 #define	RAND_TYPE_MASK		0x0fff
     95  6212  aw148015 #define	RAND_SRC_URANDOM	0x0000
     96  6212  aw148015 #define	RAND_SRC_GENERATOR	0x1000
     97  6212  aw148015 
     98  6212  aw148015 #define	RAND_PARAM_TYPE		1
     99  6212  aw148015 #define	RAND_PARAM_SRC		2
    100  6212  aw148015 #define	RAND_PARAM_SEED		3
    101  6212  aw148015 #define	RAND_PARAM_MIN		4
    102  6212  aw148015 #define	RAND_PARAM_MEAN		5
    103  6212  aw148015 #define	RAND_PARAM_GAMMA	6
    104  6212  aw148015 #define	RAND_PARAM_ROUND	7
    105  6212  aw148015 
    106  6212  aw148015 randdist_t *randdist_alloc(void);
    107  6212  aw148015 void randdist_init(void);
    108  6212  aw148015 int filebench_randomno32(uint32_t *, uint32_t, uint32_t, avd_t);
    109  6212  aw148015 int filebench_randomno64(uint64_t *, uint64_t, uint64_t, avd_t);
    110  6212  aw148015 void fb_random_init(void);
    111  6212  aw148015 
    112  6212  aw148015 #ifdef	__cplusplus
    113  6212  aw148015 }
    114  6212  aw148015 #endif
    115  6212  aw148015 
    116  6212  aw148015 #endif	/* _FB_RANDOM_H */
    117