tools/tests/libMicro/dup.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  * time dup
  33  */
  34
  35 #include <unistd.h>
  36 #include <stdlib.h>
  37 #include <stdio.h>
  38 #include <fcntl.h>
  39
  40 #include "libmicro.h"
  41
  42 #define DEFF                    "/dev/null"
  43 static char                     *optf = DEFF;
  44
  45 static int                      fd;
  46
  47 typedef struct {
  48         int                     ts_once;
  49         int                     *ts_fds;
  50 } tsd_t;
  51
  52 int
  53 benchmark_init()
  54 {
  55         lm_tsdsize = sizeof (tsd_t);
  56
  57         lm_defB = 256;
  58
  59         (void) sprintf(lm_optstr, "f:");
  60
  61         (void) sprintf(lm_usage,
  62             "       [-f file-to-dup (default %s)]\n"
  63             "notes: measures dup()\n",
  64             DEFF);
  65
  66         return (0);
  67 }
  68
  69 int
  70 benchmark_optswitch(int opt, char *optarg)
  71 {
  72         switch (opt) {
  73         case 'f':
  74                 optf = optarg;
  75                 break;
  76         default:
  77                 return (-1);
  78         }
  79         return (0);
  80 }
  81
  82 int
  83 benchmark_initrun()
  84 {
  85         (void) setfdlimit(lm_optB * lm_optT + 10);
  86         fd = (open(optf, O_RDONLY));
  87
  88         return (0);
  89 }
  90
  91 int
  92 benchmark_initbatch(void *tsd)
  93 {
  94         tsd_t                   *ts = (tsd_t *)tsd;
  95         int                     i;
  96         int                     errors = 0;
  97
  98         if (ts->ts_once++ == 0) {
  99                 ts->ts_fds = (int *)malloc(lm_optB * sizeof (int));
 100                 if (ts->ts_fds == NULL) {
 101                         errors ++;
 102                 }
 103                 for (i = 0; i < lm_optB; i++) {
 104                         ts->ts_fds[i] = -1;
 105                 }
 106         }
 107
 108         return (errors);
 109 }
 110
 111 int
 112 benchmark(void *tsd, result_t *res)
 113 {
 114         tsd_t                   *ts = (tsd_t *)tsd;
 115         int                     i;
 116
 117         for (i = 0; i < lm_optB; i++) {
 118                 ts->ts_fds[i] = dup(fd);
 119                 if (ts->ts_fds[i] == -1) {
 120                         res->re_errors++;
 121                 }
 122         }
 123         res->re_count = i;
 124
 125         return (0);
 126 }
 127
 128 int
 129 benchmark_finibatch(void *tsd)
 130 {
 131         tsd_t                   *ts = (tsd_t *)tsd;
 132         int                     i;
 133
 134         for (i = 0; i < lm_optB; i++) {
 135                 (void) close(ts->ts_fds[i]);
 136         }
 137
 138         return (0);
 139 }