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#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <signal.h>
#include <stdio.h>
int keep_going, count, alternate, seconds, iters;
struct rusage prior, now;
u_long block[3];
char *blk;
void
finish()
{
keep_going = 0;
}
main(int argc, char *argv[])
{
struct itimerval itv;
u_long msecs;
if (argc < 2 || sscanf(argv[1], "%d", &seconds) != 1)
seconds = 20;
if (argc < 3 || sscanf(argv[2], "%d", &iters) != 1)
iters = 1;
printf ("Running des_cipher( , , 0L, %d) for %d seconds of vtime...\n",
iters, seconds);
bzero(&itv, sizeof (itv));
signal (SIGVTALRM, finish);
itv.it_value.tv_sec = seconds;
itv.it_value.tv_usec = 0;
setitimer(ITIMER_VIRTUAL, &itv, NULL);
keep_going = 1;
if (getrusage(0, &prior) < 0) {
perror("getrusage");
exit(1);
}
blk = (char *) block;
(void)des_setkey(blk);
for (count = 0; keep_going; count++)
(void) des_cipher(blk, blk, 0, iters);
if (getrusage(0, &now) < 0) {
perror("getrusage");
exit(1);
}
msecs = (now.ru_utime.tv_sec - prior.ru_utime.tv_sec) * 1000
+ (now.ru_utime.tv_usec - prior.ru_utime.tv_usec) / 1000;
printf ("Did %d encryptions per second, each of %d iteration(s).\n",
1000 * count / msecs, iters);
printf ("\tTotal %d blocks per second.\n", (1000*iters*count)/msecs);
exit(0);
}
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