tools/tests/libMicro/lseek.c

   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  * lseek
  33  */
  34
  35 #ifdef linux
  36 #define _XOPEN_SOURCE 500
  37 #endif
  38
  39 #include <unistd.h>
  40 #include <stdlib.h>
  41 #include <stdio.h>
  42 #include <fcntl.h>
  43
  44 #include "libmicro.h"
  45
  46 #define DEFF                    "/dev/zero"
  47 #define DEFS                    1024
  48
  49 static char                     *optf = DEFF;
  50 static long long                opts = DEFS;
  51
  52 typedef struct {
  53         int                     ts_once;
  54         int                     ts_fd;
  55 } tsd_t;
  56
  57 int
  58 benchmark_init()
  59 {
  60         lm_tsdsize = sizeof (tsd_t);
  61
  62         (void) sprintf(lm_optstr, "f:s:");
  63
  64         (void) sprintf(lm_usage,
  65             "       [-f file-to-read (default %s)]\n"
  66             "       [-s buffer-size (default %d)]\n"
  67             "notes: measures lseek()\n",
  68             DEFF, DEFS);
  69
  70         (void) sprintf(lm_header, "%8s", "size");
  71
  72         return (0);
  73 }
  74
  75 int
  76 benchmark_optswitch(int opt, char *optarg)
  77 {
  78         switch (opt) {
  79         case 'f':
  80                 optf = optarg;
  81                 break;
  82         case 's':
  83                 opts = sizetoll(optarg);
  84                 break;
  85         default:
  86                 return (-1);
  87         }
  88         return (0);
  89 }
  90
  91 int
  92 benchmark_initbatch(void *tsd)
  93 {
  94         tsd_t                   *ts = (tsd_t *)tsd;
  95
  96         if (ts->ts_once++ == 0) {
  97                 ts->ts_fd = open(optf, O_RDONLY);
  98         }
  99
 100         return (0);
 101 }
 102
 103 int
 104 benchmark(void *tsd, result_t *res)
 105 {
 106         tsd_t                   *ts = (tsd_t *)tsd;
 107         int                     i;
 108
 109         for (i = 0; i < lm_optB; i += 2) {
 110                 if (lseek(ts->ts_fd, 0L, SEEK_SET) != 0) {
 111                         res->re_errors++;
 112                 }
 113                 if (lseek(ts->ts_fd, opts, SEEK_SET) != opts) {
 114                         res->re_errors++;
 115                 }
 116         }
 117         res->re_count = i;
 118
 119         return (0);
 120 }
 121
 122 char *
 123 benchmark_result()
 124 {
 125         static char             result[256];
 126
 127         (void) sprintf(result, "%8lld", opts);
 128
 129         return (result);
 130 }