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 SETBUFFER_SIZE  (64 * 1024)
  31
  32 #define S_OPTS  "aAB:d:D:e:hi:I:l:M:o:p:q:s:S:t:T:u:Vv"
  33 static struct option l_opts[] = {
  34         {
  35                 .name = "seek-absolute",
  36                 .has_arg = no_argument,
  37                 .flag = NULL,
  38                 .val = 'a'
  39         },
  40         {
  41                 .name = "all-data",
  42                 .has_arg = no_argument,
  43                 .flag = NULL,
  44                 .val = 'A'
  45         },
  46         {
  47                 .name = "dump-blocknos",
  48                 .has_arg = required_argument,
  49                 .flag = NULL,
  50                 .val = 'B'
  51         },
  52         {
  53                 .name = "range-delta",
  54                 .has_arg = required_argument,
  55                 .flag = NULL,
  56                 .val = 'd'
  57         },
  58         {
  59                 .name = "devices",
  60                 .has_arg = required_argument,
  61                 .flag = NULL,
  62                 .val = 'D'
  63         },
  64         {
  65                 .name = "exes",
  66                 .has_arg = required_argument,
  67                 .flag = NULL,
  68                 .val = 'e'
  69         },
  70         {
  71                 .name = "help",
  72                 .has_arg = no_argument,
  73                 .flag = NULL,
  74                 .val = 'h'
  75         },
  76         {
  77                 .name = "input-file",
  78                 .has_arg = required_argument,
  79                 .flag = NULL,
  80                 .val = 'i'
  81         },
  82         {
  83                 .name = "iostat",
  84                 .has_arg = required_argument,
  85                 .flag = NULL,
  86                 .val = 'I'
  87         },
  88         {
  89                 .name = "d2c-latencies",
  90                 .has_arg = required_argument,
  91                 .flag = NULL,
  92                 .val = 'l'
  93         },
  94         {
  95                 .name = "dev-maps",
  96                 .has_arg = required_argument,
  97                 .flag = NULL,
  98                 .val = 'M'
  99         },
 100         {
 101                 .name = "output-file",
 102                 .has_arg = required_argument,
 103                 .flag = NULL,
 104                 .val = 'o'
 105         },
 106         {
 107                 .name = "per-io-dump",
 108                 .has_arg = required_argument,
 109                 .flag = NULL,
 110                 .val = 'p'
 111         },
 112         {
 113                 .name = "q2c-latencies",
 114                 .has_arg = required_argument,
 115                 .flag = NULL,
 116                 .val = 'q'
 117         },
 118         {
 119                 .name = "seeks",
 120                 .has_arg = required_argument,
 121                 .flag = NULL,
 122                 .val = 's'
 123         },
 124         {
 125                 .name = "iostat-interval",
 126                 .has_arg = required_argument,
 127                 .flag = NULL,
 128                 .val = 'S'
 129         },
 130         {
 131                 .name = "time-start",
 132                 .has_arg = required_argument,
 133                 .flag = NULL,
 134                 .val = 't'
 135         },
 136         {
 137                 .name = "time-end",
 138                 .has_arg = required_argument,
 139                 .flag = NULL,
 140                 .val = 'T'
 141         },
 142         {
 143                 .name = "unplug-hist",
 144                 .has_arg = required_argument,
 145                 .flag = NULL,
 146                 .val = 'u'
 147         },
 148         {
 149                 .name = "version",
 150                 .has_arg = no_argument,
 151                 .flag = NULL,
 152                 .val = 'V'
 153         },
 154         {
 155                 .name = "verbose",
 156                 .has_arg = no_argument,
 157                 .flag = NULL,
 158                 .val = 'v'
 159         },
 160         {
 161                 .name = NULL,
 162         }
 163 };
 164
 165 static char usage_str[] = \
 166         "\n[ -a               | --seek-absolute ]\n" \
 167         "[ -A               | --all-data ]\n" \
 168         "[ -B <output name> | --dump-blocknos=<output name> ]\n" \
 169         "[ -d <seconds>     | --range-delta=<seconds> ]\n" \
 170         "[ -D <dev;...>     | --devices=<dev;...> ]\n" \
 171         "[ -e <exe,...>     | --exes=<exe,...>  ]\n" \
 172         "[ -h               | --help ]\n" \
 173         "[ -i <input name>  | --input-file=<input name> ]\n" \
 174         "[ -I <output name> | --iostat=<output name> ]\n" \
 175         "[ -l <output name> | --d2c-latencies=<output name> ]\n" \
 176         "[ -M <dev map>     | --dev-maps=<dev map>\n" \
 177         "[ -o <output name> | --output-file=<output name> ]\n" \
 178         "[ -p <output name> | --per-io-dump=<output name> ]\n" \
 179         "[ -q <output name> | --q2c-latencies=<output name> ]\n" \
 180         "[ -s <output name> | --seeks=<output name> ]\n" \
 181         "[ -S <interval>    | --iostat-interval=<interval> ]\n" \
 182         "[ -t <sec>         | --time-start=<sec> ]\n" \
 183         "[ -T <sec>         | --time-end=<sec> ]\n" \
 184         "[ -u <output name> | --unplug-hist=<output name> ] \n" \
 185         "[ -V               | --version ]\n" \
 186         "[ -v               | --verbose ]\n\n";
 187
 188 static struct file_info *arg_files = NULL;
 189
 190 static void usage(char *prog)
 191 {
 192         fprintf(stderr, "Usage: %s %s %s", prog, bt_timeline_version,
 193                 usage_str);
 194 }
 195
 196 static FILE *setup_ofile(char *fname)
 197 {
 198         if (fname) {
 199                 char *buf;
 200                 FILE *ofp = fopen(fname, "w");
 201
 202                 if (!ofp) {
 203                         perror(fname);
 204                         exit(1);
 205                 }
 206
 207                 buf = malloc(SETBUFFER_SIZE);
 208
 209                 setbuffer(ofp, buf, SETBUFFER_SIZE);
 210                 add_file(&arg_files, ofp, fname);
 211                 add_buf(buf);
 212                 return ofp;
 213         }
 214
 215         return NULL;
 216 }
 217
 218 void clean_args(void)
 219 {
 220         clean_files(&arg_files);
 221 }
 222
 223 void handle_args(int argc, char *argv[])
 224 {
 225         int c;
 226
 227         while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) != -1) {
 228                 switch (c) {
 229                 case 'a':
 230                         seek_absolute = 1;
 231                         break;
 232                 case 'A':
 233                         output_all_data = 1;
 234                         break;
 235                 case 'B':
 236                         bno_dump_name = strdup(optarg);
 237                         break;
 238                 case 'd':
 239                         sscanf(optarg, "%lf", &range_delta);
 240                         break;
 241                 case 'D':
 242                         devices = strdup(optarg);
 243                         break;
 244                 case 'e':
 245                         exes = strdup(optarg);
 246                         break;
 247                 case 'h':
 248                         usage(argv[0]);
 249                         exit(0);
 250                 case 'i':
 251                         input_name = strdup(optarg);
 252                         break;
 253                 case 'l':
 254                         d2c_name = strdup(optarg);
 255                         break;
 256                 case 'I':
 257                         iostat_name = strdup(optarg);
 258                         break;
 259                 case 'M':
 260                         if (dev_map_read(optarg))
 261                                 exit(1);
 262                         break;
 263                 case 'o':
 264                         output_name = strdup(optarg);
 265                         break;
 266                 case 'p':
 267                         per_io_name = strdup(optarg);
 268                         break;
 269                 case 'q':
 270                         q2c_name = strdup(optarg);
 271                         break;
 272                 case 's':
 273                         seek_name = strdup(optarg);
 274                         break;
 275                 case 'S': {
 276                         unsigned int interval;
 277                         sscanf(optarg, "%u", &interval);
 278                         iostat_interval = (__u64)interval * 1000000000LL;
 279                         break;
 280                 }
 281                 case 't':
 282                         sscanf(optarg, "%lf", &t_astart);
 283                         time_bounded = 1;
 284                         break;
 285                 case 'T':
 286                         sscanf(optarg, "%lf", &t_aend);
 287                         time_bounded = 1;
 288                         break;
 289                 case 'u':
 290                         unplug_hist_name = strdup(optarg);
 291                         break;
 292                 case 'v':
 293                         verbose = 1;
 294                         break;
 295                 case 'V':
 296                         printf("%s version %s\n", argv[0], bt_timeline_version);
 297                         exit(0);
 298                 default:
 299                         usage(argv[0]);
 300                         exit(1);
 301                 }
 302         }
 303
 304         if (input_name == NULL) {
 305                 usage(argv[0]);
 306                 exit(1);
 307         }
 308
 309         setup_ifile(input_name);
 310
 311         if (output_name == NULL)
 312                 ranges_ofp = avgs_ofp = stdout;
 313         else {
 314                 char *fname = malloc(strlen(output_name) + 32);
 315
 316                 sprintf(fname, "%s.dat", output_name);
 317                 ranges_ofp = fopen(fname, "w");
 318                 if (ranges_ofp == NULL) {
 319                         perror(fname);
 320                         exit(1);
 321                 }
 322                 if (verbose)
 323                         printf("Sending range data to %s.dat\n", output_name);
 324
 325                 sprintf(fname, "%s.avg", output_name);
 326                 avgs_ofp = fopen(fname, "w");
 327                 if (avgs_ofp == NULL) {
 328                         perror(fname);
 329                         exit(1);
 330                 }
 331                 if (verbose)
 332                         printf("Sending stats data to %s.avg\n", output_name);
 333
 334                 free(fname);
 335         }
 336
 337         iostat_ofp = setup_ofile(iostat_name);
 338         per_io_ofp = setup_ofile(per_io_name);
 339 }