Blame time/clocktest.c

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