btt/args.c

   1 /*
   2  * blktrace output analysis: generate a timeline & gather statistics
   3  *
   4  * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <getopt.h>
  25 #include <sys/types.h>
  26 #include <sys/stat.h>
  27 #include <fcntl.h>
  28 #include "globals.h"
  29
  30 #define S_OPTS  "d:D:e:hi:I:l:M:o:q:s:S:Vv"
  31 static struct option l_opts[] = {
  32         {
  33                 .name = "range-delta",
  34                 .has_arg = required_argument,
  35                 .flag = NULL,
  36                 .val = 'd'
  37         },
  38         {
  39                 .name = "devices",
  40                 .has_arg = required_argument,
  41                 .flag = NULL,
  42                 .val = 'D'
  43         },
  44         {
  45                 .name = "exes",
  46                 .has_arg = required_argument,
  47                 .flag = NULL,
  48                 .val = 'e'
  49         },
  50         {
  51                 .name = "help",
  52                 .has_arg = no_argument,
  53                 .flag = NULL,
  54                 .val = 'h'
  55         },
  56         {
  57                 .name = "input-file",
  58                 .has_arg = required_argument,
  59                 .flag = NULL,
  60                 .val = 'i'
  61         },
  62         {
  63                 .name = "iostat",
  64                 .has_arg = required_argument,
  65                 .flag = NULL,
  66                 .val = 'I'
  67         },
  68         {
  69                 .name = "d2c-latencies",
  70                 .has_arg = required_argument,
  71                 .flag = NULL,
  72                 .val = 'l'
  73         },
  74         {
  75                 .name = "dev-maps",
  76                 .has_arg = required_argument,
  77                 .flag = NULL,
  78                 .val = 'M'
  79         },
  80         {
  81                 .name = "output-file",
  82                 .has_arg = required_argument,
  83                 .flag = NULL,
  84                 .val = 'o'
  85         },
  86         {
  87                 .name = "q2c-latencies",
  88                 .has_arg = required_argument,
  89                 .flag = NULL,
  90                 .val = 'q'
  91         },
  92         {
  93                 .name = "seeks",
  94                 .has_arg = required_argument,
  95                 .flag = NULL,
  96                 .val = 's'
  97         },
  98         {
  99                 .name = "iostat-interval",
 100                 .has_arg = required_argument,
 101                 .flag = NULL,
 102                 .val = 'S'
 103         },
 104         {
 105                 .name = "version",
 106                 .has_arg = no_argument,
 107                 .flag = NULL,
 108                 .val = 'V'
 109         },
 110         {
 111                 .name = "verbose",
 112                 .has_arg = no_argument,
 113                 .flag = NULL,
 114                 .val = 'v'
 115         },
 116         {
 117                 .name = NULL,
 118         }
 119 };
 120
 121 static char usage_str[] = \
 122         "\n[ -d <seconds>     | --range-delta=<seconds> ]\n" \
 123         "[ -D <dev;...>     | --devices=<dev;...> ]\n" \
 124         "[ -e <exe,...>     | --exes=<exe,...>  ]\n" \
 125         "[ -h               | --help ]\n" \
 126         "[ -i <input name>  | --input-file=<input name> ]\n" \
 127         "[ -I <output name> | --iostat=<output name> ]\n" \
 128         "[ -l <output name> | --d2c-latencies=<output name> ]\n" \
 129         "[ -M <dev map>     | --dev-maps=<dev map>\n" \
 130         "[ -o <output name> | --output-file=<output name> ]\n" \
 131         "[ -q <output name> | --q2c-latencies=<output name> ]\n" \
 132         "[ -s <output name> | --seeks=<output name> ]\n" \
 133         "[ -S <interval>    | --iostat-interval=<interval> ]\n" \
 134         "[ -V               | --version ]\n" \
 135         "[ -v               | --verbose ]\n\n";
 136
 137 static void usage(char *prog)
 138 {
 139         fprintf(stderr, "Usage: %s %s %s", prog, bt_timeline_version,
 140                 usage_str);
 141 }
 142
 143 void handle_args(int argc, char *argv[])
 144 {
 145         int c;
 146
 147         while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) != -1) {
 148                 switch (c) {
 149                 case 'd':
 150                         sscanf(optarg, "%lf", &range_delta);
 151                         break;
 152                 case 'D':
 153                         devices = strdup(optarg);
 154                         break;
 155                 case 'e':
 156                         exes = strdup(optarg);
 157                         break;
 158                 case 'h':
 159                         usage(argv[0]);
 160                         exit(0);
 161                 case 'i':
 162                         input_name = strdup(optarg);
 163                         break;
 164                 case 'l':
 165                         d2c_name = strdup(optarg);
 166                         break;
 167                 case 'I':
 168                         iostat_name = strdup(optarg);
 169                         break;
 170                 case 'M':
 171                         if (dev_map_read(optarg))
 172                                 exit(1);
 173                         break;
 174                 case 'o':
 175                         output_name = strdup(optarg);
 176                         break;
 177                 case 'q':
 178                         q2c_name = strdup(optarg);
 179                         break;
 180                 case 's':
 181                         seek_name = strdup(optarg);
 182                         break;
 183                 case 'S': {
 184                         unsigned int interval;
 185                         sscanf(optarg, "%u", &interval);
 186                         iostat_interval = (__u64)interval * 1000000000LL;
 187                         break;
 188                 }
 189                 case 'v':
 190                         verbose = 1;
 191                         break;
 192                 case 'V':
 193                         printf("%s version %s\n", argv[0], bt_timeline_version);
 194                         exit(0);
 195                 default:
 196                         usage(argv[0]);
 197                         exit(1);
 198                 }
 199         }
 200
 201         if (input_name == NULL) {
 202                 usage(argv[0]);
 203                 exit(1);
 204         }
 205
 206         ifd = open(input_name, O_RDONLY);
 207         if (ifd < 0) {
 208                 perror(input_name);
 209                 exit(1);
 210         }
 211
 212         if (output_name == NULL)
 213                 ranges_ofp = avgs_ofp = stdout;
 214         else {
 215                 char *fname = malloc(strlen(output_name) + 32);
 216
 217                 sprintf(fname, "%s.dat", output_name);
 218                 ranges_ofp = fopen(fname, "w");
 219                 if (ranges_ofp == NULL) {
 220                         perror(fname);
 221                         exit(1);
 222                 }
 223                 if (verbose)
 224                         printf("Sending range data to %s.dat\n", output_name);
 225
 226                 sprintf(fname, "%s.avg", output_name);
 227                 avgs_ofp = fopen(fname, "w");
 228                 if (avgs_ofp == NULL) {
 229                         perror(fname);
 230                         exit(1);
 231                 }
 232                 if (verbose)
 233                         printf("Sending stats data to %s.avg\n", output_name);
 234
 235                 free(fname);
 236         }
 237
 238         if (iostat_name != NULL) {
 239                 iostat_ofp = fopen(iostat_name, "w");
 240                 if (iostat_ofp == NULL) {
 241                         perror(iostat_name);
 242                         exit(1);
 243                 }
 244         }
 245 }