#include <common.h>

int
main(void) {
        sem_t *id;
        u_int elapsed;
        pid_t pid;

        id = construct_shared_unnamed_sem(0);
        if (id == SEM_FAILED) {
                fprintf(stderr, "construct sem\n");
                return 1;
        }

        pid = fork();
        switch (pid) {
        case -1:
                /* Error. */
                perror("fork");
                destruct_shared_unnamed_sem(id);
                return 1;
        case 0:
                /* Child. */
                sleep(1);
                sem_post(id);
                exit(0);
        }

        if (timedwait(id, 2000, &elapsed, 0) < 0) {
                destruct_shared_unnamed_sem(id);
                return 1;
        }
        if (!ELAPSED(elapsed, 1000)) {
                fprintf(stderr, "sem_timedwait() with delayed post took %ums "
                    "instead of 1000ms", elapsed);
                destruct_shared_unnamed_sem(id);
                return 1;
        }

        destruct_shared_unnamed_sem(id);

        return 0;
}