|
Packit |
6c4009 |
#include <signal.h>
|
|
Packit |
6c4009 |
#include <stdio.h>
|
|
Packit |
6c4009 |
#include <stdlib.h>
|
|
Packit |
6c4009 |
#include <time.h>
|
|
Packit |
6c4009 |
#include <unistd.h>
|
|
Packit |
6c4009 |
#include <stdint.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
volatile int gotit = 0;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
static void
|
|
Packit |
6c4009 |
alarm_handler (int signal)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
gotit = 1;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
int
|
|
Packit |
6c4009 |
main (int argc, char ** argv)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
clock_t start, stop;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
if (signal(SIGALRM, alarm_handler) == SIG_ERR)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
perror ("signal");
|
|
Packit |
6c4009 |
exit (1);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
alarm(1);
|
|
Packit |
6c4009 |
start = clock ();
|
|
Packit |
6c4009 |
while (!gotit);
|
|
Packit |
6c4009 |
stop = clock ();
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
printf ("%jd clock ticks per second (start=%jd,stop=%jd)\n",
|
|
Packit |
6c4009 |
(intmax_t) (stop - start), (intmax_t) start, (intmax_t) stop);
|
|
Packit |
6c4009 |
printf ("CLOCKS_PER_SEC=%jd, sysconf(_SC_CLK_TCK)=%ld\n",
|
|
Packit |
6c4009 |
(intmax_t) CLOCKS_PER_SEC, sysconf(_SC_CLK_TCK));
|
|
Packit |
6c4009 |
return 0;
|
|
Packit |
6c4009 |
}
|