115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
/* testspeed.c - Command to test file read speed */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2012 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/mm.h>
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#include <grub/file.h>
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#include <grub/time.h>
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#include <grub/misc.h>
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#include <grub/dl.h>
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#include <grub/extcmd.h>
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#include <grub/i18n.h>
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#include <grub/normal.h>
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GRUB_MOD_LICENSE ("GPLv3+");
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#define DEFAULT_BLOCK_SIZE 65536
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static const struct grub_arg_option options[] =
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{
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{"size", 's', 0, N_("Specify size for each read operation"), 0, ARG_TYPE_INT},
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{0, 0, 0, 0, 0, 0}
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};
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static grub_err_t
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grub_cmd_testspeed (grub_extcmd_context_t ctxt, int argc, char **args)
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{
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struct grub_arg_list *state = ctxt->state;
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grub_uint64_t start;
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grub_uint64_t end;
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grub_ssize_t block_size;
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grub_disk_addr_t total_size;
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char *buffer;
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grub_file_t file;
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grub_uint64_t whole, fraction;
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if (argc == 0)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
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block_size = (state[0].set) ?
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grub_strtoul (state[0].arg, 0, 0) : DEFAULT_BLOCK_SIZE;
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if (block_size <= 0)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("invalid block size"));
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buffer = grub_malloc (block_size);
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if (buffer == NULL)
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return grub_errno;
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file = grub_file_open (args[0]);
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if (file == NULL)
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goto quit;
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total_size = 0;
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start = grub_get_time_ms ();
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while (1)
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{
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grub_ssize_t size = grub_file_read (file, buffer, block_size);
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if (size <= 0)
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break;
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total_size += size;
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}
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end = grub_get_time_ms ();
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grub_file_close (file);
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grub_printf_ (N_("File size: %s\n"),
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grub_get_human_size (total_size, GRUB_HUMAN_SIZE_NORMAL));
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whole = grub_divmod64 (end - start, 1000, &fraction);
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grub_printf_ (N_("Elapsed time: %d.%03d s \n"),
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(unsigned) whole,
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(unsigned) fraction);
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if (end != start)
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{
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grub_uint64_t speed =
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grub_divmod64 (total_size * 100ULL * 1000ULL, end - start, 0);
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grub_printf_ (N_("Speed: %s \n"),
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grub_get_human_size (speed,
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GRUB_HUMAN_SIZE_SPEED));
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}
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quit:
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grub_free (buffer);
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return grub_errno;
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}
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static grub_extcmd_t cmd;
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GRUB_MOD_INIT(testspeed)
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{
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cmd = grub_register_extcmd ("testspeed", grub_cmd_testspeed, 0, N_("[-s SIZE] FILENAME"),
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N_("Test file read speed."),
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options);
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}
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GRUB_MOD_FINI(testspeed)
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{
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grub_unregister_extcmd (cmd);
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}
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