tools/tests/libMicro/strlen.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 #include <unistd.h>
  32 #include <stdlib.h>
  33 #include <stdio.h>
  34 #include <string.h>
  35
  36 #include "libmicro.h"
  37
  38 static int unaligned = 0;
  39 static int opts = 100;
  40
  41 typedef struct {
  42         int     ts_once;
  43         char    *ts_string;
  44         int     ts_fakegcc;
  45 } tsd_t;
  46
  47 int
  48 benchmark_init()
  49 {
  50
  51         lm_tsdsize = sizeof (tsd_t);
  52
  53         (void) sprintf(lm_optstr, "s:n");
  54
  55         (void) sprintf(lm_usage,
  56             "       [-s string size (default %d)]\n"
  57             "       [-n causes unaligned strlen]\n"
  58             "notes: measures strlen()\n",
  59             opts);
  60
  61         (void) sprintf(lm_header, "%8s", "size");
  62
  63         return (0);
  64 }
  65
  66 int
  67 benchmark_optswitch(int opt, char *optarg)
  68 {
  69         switch (opt) {
  70         case 'n':
  71                 unaligned = 1;
  72                 break;
  73         case 's':
  74                 opts = sizetoll(optarg);
  75                 break;
  76         default:
  77                 return (-1);
  78         }
  79         return (0);
  80 }
  81
  82 int
  83 benchmark_initbatch(void *tsd)
  84 {
  85         tsd_t                   *ts = (tsd_t *)tsd;
  86         static char             *demo =
  87             "The quick brown fox jumps over the lazy dog.";
  88
  89         if (ts->ts_once++ == 0) {
  90                 int l = strlen(demo);
  91                 int i;
  92
  93                 ts->ts_string = malloc(opts + 1 + unaligned);
  94                 ts->ts_string += unaligned;
  95
  96
  97                 for (i = 0; i < opts; i++) {
  98                         ts->ts_string[i] = demo[i%l];
  99                 }
 100
 101                 ts->ts_string[opts] = 0;
 102
 103         }
 104         return (0);
 105 }
 106
 107 int
 108 benchmark(void *tsd, result_t *res)
 109 {
 110         int                     i;
 111         tsd_t                   *ts = (tsd_t *)tsd;
 112         char                    *src = ts->ts_string;
 113
 114         for (i = 0; i < lm_optB; i += 10) {
 115                 ts->ts_fakegcc += strlen(src);
 116                 ts->ts_fakegcc += strlen(src);
 117                 ts->ts_fakegcc += strlen(src);
 118                 ts->ts_fakegcc += strlen(src);
 119                 ts->ts_fakegcc += strlen(src);
 120                 ts->ts_fakegcc += strlen(src);
 121                 ts->ts_fakegcc += strlen(src);
 122                 ts->ts_fakegcc += strlen(src);
 123                 ts->ts_fakegcc += strlen(src);
 124                 ts->ts_fakegcc += strlen(src);
 125         }
 126
 127         res->re_count = i;
 128
 129         return (0);
 130 }
 131
 132 char *
 133 benchmark_result()
 134 {
 135         static char     result[256];
 136
 137         if (unaligned == 0)
 138                 (void) sprintf(result, "%8d", opts);
 139         else
 140                 (void) sprintf(result, "%8d <unaligned>", opts);
 141
 142         return (result);
 143 }