Home | History | Annotate | Download | only in libmicro
      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms
      5  * of the Common Development and Distribution License
      6  * (the "License").  You may not use this file except
      7  * in compliance with the License.
      8  *
      9  * You can obtain a copy of the license at
     10  * src/OPENSOLARIS.LICENSE
     11  * or http://www.opensolaris.org/os/licensing.
     12  * See the License for the specific language governing
     13  * permissions and limitations under the License.
     14  *
     15  * When distributing Covered Code, include this CDDL
     16  * HEADER in each file and include the License file at
     17  * usr/src/OPENSOLARIS.LICENSE.  If applicable,
     18  * add the following below this CDDL HEADER, with the
     19  * fields enclosed by brackets "[]" replaced with your
     20  * own identifying information: Portions Copyright [yyyy]
     21  * [name of copyright owner]
     22  *
     23  * CDDL HEADER END
     24  */
     25 
     26 /*
     27  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
     28  * Use is subject to license terms.
     29  */
     30 
     31 
     32 #ifdef linux
     33 #define	_XOPEN_SOURCE 500
     34 #endif
     35 
     36 #include <unistd.h>
     37 #include <stdlib.h>
     38 #include <stdio.h>
     39 #include <fcntl.h>
     40 
     41 #include "libmicro.h"
     42 
     43 typedef struct {
     44 	char			*ts_buf;
     45 	int			ts_fd;
     46 } tsd_t;
     47 
     48 #define	DEFF			"/dev/zero"
     49 #define	DEFS			1024
     50 
     51 static char			*optf = DEFF;
     52 static long long		opts = DEFS;
     53 int				optw = 0;
     54 
     55 int
     56 benchmark_init()
     57 {
     58 	lm_tsdsize = sizeof (tsd_t);
     59 
     60 	(void) sprintf(lm_optstr, "f:s:w");
     61 
     62 	(void) sprintf(lm_usage,
     63 	    "       [-f file-to-read (default %s)]\n"
     64 	    "       [-s buffer-size (default %d)]\n"
     65 	    "       [-w (store a byte to each page after read)]\n"
     66 	    "notes: measures read()\n",
     67 	    DEFF, DEFS);
     68 
     69 	(void) sprintf(lm_header, "%8s", "size");
     70 
     71 	lm_defB = 1;
     72 
     73 	return (0);
     74 }
     75 
     76 int
     77 benchmark_optswitch(int opt, char *optarg)
     78 {
     79 	switch (opt) {
     80 	case 'w':
     81 		optw = getpagesize();
     82 		break;
     83 	case 'f':
     84 		optf = optarg;
     85 		break;
     86 	case 's':
     87 		opts = sizetoll(optarg);
     88 		break;
     89 	default:
     90 		return (-1);
     91 	}
     92 	return (0);
     93 }
     94 
     95 int
     96 benchmark_initrun()
     97 {
     98 	return (0);
     99 }
    100 
    101 int
    102 benchmark_initbatch(void *tsd)
    103 {
    104 	tsd_t			*ts = (tsd_t *)tsd;
    105 
    106 	if (ts->ts_buf == NULL) {
    107 		ts->ts_buf = malloc(opts);
    108 		ts->ts_fd = open(optf, O_RDONLY);
    109 	}
    110 
    111 	(void) lseek(ts->ts_fd, 0, SEEK_SET);
    112 
    113 	return (0);
    114 }
    115 
    116 int
    117 benchmark(void *tsd, result_t *res)
    118 {
    119 	tsd_t			*ts = (tsd_t *)tsd;
    120 	int			i;
    121 	int 			j;
    122 	for (i = 0; i < lm_optB; i++) {
    123 		if (read(ts->ts_fd, ts->ts_buf, opts) != opts) {
    124 			res->re_errors++;
    125 		}
    126 		if (optw)
    127 			for (j = 0; j < opts; j += optw)
    128 				ts->ts_buf[j] = 0;
    129 	}
    130 	res->re_count = i;
    131 
    132 	return (0);
    133 }
    134 
    135 char *
    136 benchmark_result()
    137 {
    138 	static char		result[256];
    139 
    140 	(void) sprintf(result, "%8lld", opts);
    141 
    142 	return (result);
    143 }
    144