src/hci/commands/time_cmd.c

   1 /*
   2  * Copyright (C) 2009 Daniel Verkamp <daniel@drv.nu>.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  *
  18  * March-19-2009 @ 02:44: Added sleep command.
  19  * Shao Miller <shao.miller@yrdsb.edu.on.ca>.
  20  */
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26 #include <gpxe/command.h>
  27 #include <gpxe/nap.h>
  28 #include <gpxe/timer.h>
  29
  30 static int time_exec ( int argc, char **argv ) {
  31         unsigned long start;
  32         int rc, secs;
  33
  34         if ( argc == 1 ||
  35              !strcmp ( argv[1], "--help" ) ||
  36              !strcmp ( argv[1], "-h" ) )
  37         {
  38                 printf ( "Usage:\n"
  39                          "  %s <command>\n"
  40                          "\n"
  41                          "Time a command\n",
  42                          argv[0] );
  43                 return 1;
  44         }
  45
  46         start = currticks();
  47         rc = execv ( argv[1], argv + 1 );
  48         secs = (currticks() - start) / ticks_per_sec();
  49
  50         printf ( "%s: %ds\n", argv[0], secs );
  51
  52         return rc;
  53 }
  54
  55 struct command time_command __command = {
  56         .name = "time",
  57         .exec = time_exec,
  58 };
  59
  60 static int sleep_exec ( int argc, char **argv ) {
  61         unsigned long start, delay;
  62
  63         if ( argc == 1 ||
  64              !strcmp ( argv[1], "--help" ) ||
  65              !strcmp ( argv[1], "-h" ))
  66         {
  67                 printf ( "Usage:\n"
  68                          "  %s <seconds>\n"
  69                          "\n"
  70                          "Sleep for <seconds> seconds\n",
  71                          argv[0] );
  72                 return 1;
  73         }
  74         start = currticks();
  75         delay = strtoul ( argv[1], NULL, 0 ) * ticks_per_sec();
  76         while ( ( currticks() - start ) <= delay )
  77                 cpu_nap();
  78         return 0;
  79 }
  80
  81 struct command sleep_command __command = {
  82         .name = "sleep",
  83         .exec = sleep_exec,
  84 };