/* Test condition attributes and pthread_cond_timedwait. */ #define _GNU_SOURCE #include #include #include #include #include #include int main (int argc, char **argv) { error_t err; int i; pthread_condattr_t attr; pthread_cond_t cond; struct timespec ts; pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER; struct timeval before, after; int diff; err = pthread_condattr_init (&attr); if (err) error (1, err, "pthread_condattr_init"); err = pthread_condattr_getpshared (&attr, &i); if (err) error (1, err, "pthread_condattr_getpshared"); assert (i == PTHREAD_PROCESS_PRIVATE); err = pthread_condattr_setpshared (&attr, PTHREAD_PROCESS_PRIVATE); assert (err == 0); err = pthread_cond_init (&cond, &attr); if (err) error (1, err, "pthread_cond_init"); err = pthread_condattr_destroy (&attr); if (err) error (1, err, "pthread_condattr_destroy"); gettimeofday (&before, 0); ts.tv_sec = before.tv_sec + 1; ts.tv_nsec = before.tv_usec * 1000; printf ("Starting wait @ %d\n", (int) before.tv_sec); pthread_mutex_lock (&m); err = pthread_cond_timedwait (&cond, &m, &ts); gettimeofday (&after, 0); printf ("End wait @ %d (err = %d)\n", (int) after.tv_sec, err); assert (err == ETIMEDOUT); diff = after.tv_sec * 1000000 + after.tv_usec - before.tv_sec * 1000000 - before.tv_usec; if (diff < 900000 || diff > 1100000) error (1, EGRATUITOUS, "pthread_cond_timedwait waited %d us", diff); return 0; }