arch/all-pc/boot/grub2-aros/grub-core/commands/testspeed.c

   1 /* testspeed.c - Command to test file read speed  */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2012  Free Software Foundation, Inc.
   5  *
   6  *  GRUB 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 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <grub/mm.h>
  21 #include <grub/file.h>
  22 #include <grub/time.h>
  23 #include <grub/misc.h>
  24 #include <grub/dl.h>
  25 #include <grub/extcmd.h>
  26 #include <grub/i18n.h>
  27 #include <grub/normal.h>
  28
  29 GRUB_MOD_LICENSE ("GPLv3+");
  30
  31 #define DEFAULT_BLOCK_SIZE      65536
  32
  33 static const struct grub_arg_option options[] =
  34   {
  35     {"size", 's', 0, N_("Specify size for each read operation"), 0, ARG_TYPE_INT},
  36     {0, 0, 0, 0, 0, 0}
  37   };
  38
  39 static grub_err_t
  40 grub_cmd_testspeed (grub_extcmd_context_t ctxt, int argc, char **args)
  41 {
  42   struct grub_arg_list *state = ctxt->state;
  43   grub_uint64_t start;
  44   grub_uint64_t end;
  45   grub_ssize_t block_size;
  46   grub_disk_addr_t total_size;
  47   char *buffer;
  48   grub_file_t file;
  49   grub_uint64_t whole, fraction;
  50
  51   if (argc == 0)
  52     return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
  53
  54   block_size = (state[0].set) ?
  55     grub_strtoul (state[0].arg, 0, 0) : DEFAULT_BLOCK_SIZE;
  56
  57   if (block_size <= 0)
  58     return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("invalid block size"));
  59
  60   buffer = grub_malloc (block_size);
  61   if (buffer == NULL)
  62     return grub_errno;
  63
  64   file = grub_file_open (args[0]);
  65   if (file == NULL)
  66     goto quit;
  67
  68   total_size = 0;
  69   start = grub_get_time_ms ();
  70   while (1)
  71     {
  72       grub_ssize_t size = grub_file_read (file, buffer, block_size);
  73       if (size <= 0)
  74         break;
  75       total_size += size;
  76     }
  77   end = grub_get_time_ms ();
  78   grub_file_close (file);
  79
  80   grub_printf_ (N_("File size: %s\n"),
  81                 grub_get_human_size (total_size, GRUB_HUMAN_SIZE_NORMAL));
  82   whole = grub_divmod64 (end - start, 1000, &fraction);
  83   grub_printf_ (N_("Elapsed time: %d.%03d s \n"),
  84                 (unsigned) whole,
  85                 (unsigned) fraction);
  86
  87   if (end != start)
  88     {
  89       grub_uint64_t speed =
  90         grub_divmod64 (total_size * 100ULL * 1000ULL, end - start, 0);
  91
  92       grub_printf_ (N_("Speed: %s \n"),
  93                     grub_get_human_size (speed,
  94                                          GRUB_HUMAN_SIZE_SPEED));
  95     }
  96
  97  quit:
  98   grub_free (buffer);
  99
 100   return grub_errno;
 101 }
 102
 103 static grub_extcmd_t cmd;
 104
 105 GRUB_MOD_INIT(testspeed)
 106 {
 107   cmd = grub_register_extcmd ("testspeed", grub_cmd_testspeed, 0, N_("[-s SIZE] FILENAME"),
 108                               N_("Test file read speed."),
 109                               options);
 110 }
 111
 112 GRUB_MOD_FINI(testspeed)
 113 {
 114   grub_unregister_extcmd (cmd);
 115 }