tools/tests/libMicro/memcpy.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  * memcpy
  33  */
  34
  35 #include <unistd.h>
  36 #include <stdlib.h>
  37 #include <stdio.h>
  38 #include <string.h>
  39
  40 #include "libmicro.h"
  41
  42 #define DEFS                    8192
  43 #define DEFR                    1
  44
  45 static long long                opts = DEFS;
  46 static int                      optf;
  47 static int                      optt;
  48 static int                      opta;
  49
  50 typedef struct {
  51         char                    *ts_src;
  52         char                    *ts_dest;
  53         int                     ts_srcsize;
  54         int                     ts_destsize;
  55 } tsd_t;
  56
  57 int
  58 benchmark_init()
  59 {
  60         lm_tsdsize = sizeof (tsd_t);
  61
  62         (void) sprintf(lm_optstr, "a:s:ft");
  63
  64         (void) sprintf(lm_usage,
  65             "       [-s buffer-size (default %d)]\n"
  66             "       [-a relative alignment (default page aligned)]\n"
  67             "       [-f (rotate \"from\" buffer to keep it out of cache)]\n"
  68             "       [-t (rotate \"to\" buffer to keep it out of cache)]\n"
  69             "notes: measures memcpy()\n",
  70             DEFS);
  71
  72         (void) sprintf(lm_header, "%8s", "size");
  73
  74         return (0);
  75 }
  76
  77 int
  78 benchmark_optswitch(int opt, char *optarg)
  79 {
  80         switch (opt) {
  81         case 'f':
  82                 optf++;
  83                 break;
  84         case 't':
  85                 optt++;
  86                 break;
  87         case 's':
  88                 opts = sizetoll(optarg);
  89                 break;
  90         case 'a':
  91                 opta = sizetoint(optarg);
  92                 break;
  93         default:
  94                 return (-1);
  95         }
  96         return (0);
  97 }
  98
  99 int
 100 benchmark_initworker(void *tsd)
 101 {
 102         tsd_t                   *ts = (tsd_t *)tsd;
 103
 104         if (optf)
 105                 ts->ts_srcsize = 64 * 1024 * 1024;
 106         else
 107                 ts->ts_srcsize = opts + opta;
 108
 109         if (optt)
 110                 ts->ts_destsize = 64 * 1024 * 1024;
 111         else
 112                 ts->ts_destsize = (int)opts;
 113
 114
 115         ts->ts_src = opta + (char *)valloc(ts->ts_srcsize);
 116         ts->ts_dest = valloc(ts->ts_destsize);
 117
 118         return (0);
 119 }
 120
 121 int
 122 benchmark(void *tsd, result_t *res)
 123 {
 124         tsd_t                   *ts = (tsd_t *)tsd;
 125         int                     i;
 126         char                    *src = ts->ts_src;
 127         char                    *dest = ts->ts_dest;
 128
 129         int bump = (int)opts;
 130
 131         if (bump < 1024)
 132                 bump = 1024; /* avoid prefetched area */
 133         for (i = 0; i < lm_optB; i++) {
 134                 (void) memcpy(dest, src, opts);
 135                 if (optf) {
 136                         src += bump;
 137                         if (src + opts > ts->ts_src + ts->ts_srcsize)
 138                                 src = ts->ts_src;
 139                 }
 140                 if (optt) {
 141                         dest += bump;
 142                         if (dest + opts > ts->ts_dest + ts->ts_destsize)
 143                                 dest = ts->ts_dest;
 144                 }
 145         }
 146
 147         res->re_count = i;
 148
 149         return (0);
 150 }
 151
 152 char *
 153 benchmark_result()
 154 {
 155         static char             result[256];
 156
 157         (void) sprintf(result, "%8lld", opts);
 158
 159         return (result);
 160 }