[thirdparty/glibc.git] / time / clocktest.c

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <stdint.h>

volatile int gotit = 0;

static void
alarm_handler (int signal)
{
    gotit = 1;
}


int
main (int argc, char ** argv)
{
  clock_t start, stop;

  if (signal(SIGALRM, alarm_handler) == SIG_ERR)
    {
      perror ("signal");
      exit (1);
    }
  alarm(1);
  start = clock ();
  while (!gotit);
  stop = clock ();

  printf ("%jd clock ticks per second (start=%jd,stop=%jd)\n",
	  (intmax_t) (stop - start), (intmax_t) start, (intmax_t) stop);
  printf ("CLOCKS_PER_SEC=%jd, sysconf(_SC_CLK_TCK)=%ld\n",
	  (intmax_t) CLOCKS_PER_SEC, sysconf(_SC_CLK_TCK));
  return 0;
}
Commit	Line	Data
84724245	1	#include <signal.h>
28f540f4	2	#include <stdio.h>
3e1f480e	3	#include <stdlib.h>
28f540f4	4	#include <time.h>
84724245	5	#include <unistd.h>
ceaa9889	6	#include <stdint.h>
28f540f4	7
84724245 RM	8	volatile int gotit = 0;
84724245 RM	9
de149cdb	10	static void
84724245 RM	11	alarm_handler (int signal)
	12	{
	13	gotit = 1;
	14	}
	15
	16
	17	int
	18	main (int argc, char ** argv)
28f540f4	19	{
84724245	20	clock_t start, stop;
28f540f4	21
227d9931	22	if (signal(SIGALRM, alarm_handler) == SIG_ERR)
9eb2730e UD	23	{
	24	perror ("signal");
	25	exit (1);
	26	}
84724245 RM	27	alarm(1);
	28	start = clock ();
	29	while (!gotit);
	30	stop = clock ();
28f540f4	31
fe342f50 L	32	printf ("%jd clock ticks per second (start=%jd,stop=%jd)\n",
fe342f50 L	33	(intmax_t) (stop - start), (intmax_t) start, (intmax_t) stop);
57ada0e7 L	34	printf ("CLOCKS_PER_SEC=%jd, sysconf(_SC_CLK_TCK)=%ld\n",
57ada0e7 L	35	(intmax_t) CLOCKS_PER_SEC, sysconf(_SC_CLK_TCK));
28f540f4 RM	36	return 0;
28f540f4 RM	37	}