Ron Williams
43 lines
885 B
C
43 lines
885 B
C
#include <time.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <signal.h>
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#include "test_helpers.h"
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int usleep(useconds_t);
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void handler(int _s)
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{
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(void)_s;
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}
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int main(void)
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{
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// sleep has no error codes and doesn't set errno
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unsigned int unslept = sleep(2);
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printf("unslept: %u\n", unslept);
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struct sigaction sa;
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memset(&sa, 0, sizeof(sa));
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sa.sa_handler = handler;
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sigaction(SIGALRM, &sa, NULL);
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alarm(2);
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unslept = sleep(10);
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if (unslept < 7)
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{
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printf("after alarm, unslept too short: %u\n", unslept);
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exit(EXIT_FAILURE);
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}
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int us_status = usleep(1000);
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ERROR_IF(usleep, us_status, == -1);
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UNEXP_IF(usleep, us_status, != 0);
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struct timespec tm = {0, 10000};
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int ns_status = nanosleep(&tm, NULL);
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ERROR_IF(nanosleep, ns_status, == -1);
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UNEXP_IF(nanosleep, ns_status, != 0);
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}
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