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[time] Add the sleep command

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Reviewed-by: Stefan Hajnoczi <stefanha@gmail.com>
Reviewed-by: Thomas Miletich <thomas.miletich@gmail.com>
Modified-by: Michael Brown <mcb30@etherboot.org>
Signed-off-by: Michael Brown <mcb30@etherboot.org>
This commit is contained in:
Shao Miller 2009-03-21 01:48:15 -04:00 committed by Michael Brown
parent 5bd32315d0
commit 87b494bbab
2 changed files with 31 additions and 1 deletions
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2
src/config/general.h
View File

@ -101,7 +101,7 @@
#define DHCP_CMD /* DHCP management commands */
#define SANBOOT_CMD /* SAN boot commands */
#define LOGIN_CMD /* Login command */
#undef TIME_CMD /* Time command */
#undef TIME_CMD /* Time commands */
/*
* Obscure configuration options

30
src/hci/commands/time_cmd.c
View File

@ -14,12 +14,17 @@
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* March-19-2009 @ 02:44: Added sleep command.
* Shao Miller <shao.miller@yrdsb.edu.on.ca>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <gpxe/command.h>
#include <gpxe/nap.h>
#include <gpxe/timer.h>
static int time_exec ( int argc, char **argv ) {
@ -52,3 +57,28 @@ struct command time_command __command = {
.exec = time_exec,
};
static int sleep_exec ( int argc, char **argv ) {
unsigned long start, delay;
if ( argc == 1 ||
!strcmp ( argv[1], "--help" ) ||
!strcmp ( argv[1], "-h" ))
{
printf ( "Usage:\n"
" %s <seconds>\n"
"\n"
"Sleep for <seconds> seconds\n",
argv[0] );
return 1;
}
start = currticks();
delay = strtoul ( argv[1], NULL, 0 ) * ticks_per_sec();
while ( ( currticks() - start ) <= delay )
cpu_nap();
return 0;
}
struct command sleep_command __command = {
.name = "sleep",
.exec = sleep_exec,
};