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[glibc/history.git] / time / clocktest.c
blobf2b3ea73a15fe35d9fb63ed24753f4397d3d2066
1 #include <signal.h>
2 #include <stdio.h>
3 #include <stdlib.h>
4 #include <time.h>
5 #include <unistd.h>
7 volatile int gotit = 0;
9 static void
10 alarm_handler (int signal)
12 gotit = 1;
16 int
17 main (int argc, char ** argv)
19 clock_t start, stop;
21 if (signal(SIGALRM, alarm_handler) == SIG_ERR)
23 perror ("signal");
24 exit (1);
26 alarm(1);
27 start = clock ();
28 while (!gotit);
29 stop = clock ();
31 printf ("%ld clock ticks per second (start=%ld,stop=%ld)\n",
32 stop - start, start, stop);
33 printf ("CLOCKS_PER_SEC=%ld, sysconf(_SC_CLK_TCK)=%ld\n",
34 CLOCKS_PER_SEC, sysconf(_SC_CLK_TCK));
35 return 0;