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#include <common.h>
#include <command.h>
#include <clock.h>
#include <asm-generic/div64.h>
#include <malloc.h>
static int do_time(int argc, char *argv[])
{
int i;
unsigned char *buf;
u64 start, end, diff64;
unsigned long diff;
int len = 1; /* '\0' */
if (argc < 2)
return COMMAND_ERROR_USAGE;
for (i = 1; i < argc; i++)
len += strlen(argv[i]) + 1;
buf = xzalloc(len);
for (i = 1; i < argc; i++) {
strcat(buf, argv[i]);
strcat(buf, " ");
}
start = get_time_ns();
run_command(buf);
end = get_time_ns();
diff64 = end - start;
do_div(diff64, 1000000);
diff = diff64;
printf("time: %lums\n", diff);
free(buf);
return 0;
}
BAREBOX_CMD_HELP_START(time)
BAREBOX_CMD_HELP_USAGE("time <command>\n")
BAREBOX_CMD_HELP_SHORT("note: This command depends on <command> being interruptible,\n")
BAREBOX_CMD_HELP_SHORT("Otherwise the timer may overrun resulting in incorrect results\n")
BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(time)
.cmd = do_time,
.usage = "measure execution time of a command",
BAREBOX_CMD_HELP(cmd_time_help)
BAREBOX_CMD_END
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