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37 lines
625 B
C
37 lines
625 B
C
#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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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 ("%ld clock ticks per second (start=%ld,stop=%ld)\n",
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stop - start, start, stop);
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printf ("CLOCKS_PER_SEC=%ld, sysconf(_SC_CLK_TCK)=%ld\n",
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CLOCKS_PER_SEC, sysconf(_SC_CLK_TCK));
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return 0;
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}
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