fprintf(stderr, "PR_WaitSemaphore failed\n");
fprintf(stderr, "PR_PostSemaphore failed\n");
int main(int argc, char **argv){    PRThread *thred;    PRIntn i;    PLOptStatus os;    PLOptState *opt = PL_CreateOptState(argc, argv, "dc:h");    while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {        if (PL_OPT_BAD == os) continue;        switch (opt->option) {            case 'd':  /* debug mode */                debug_mode = PR_TRUE;                break;            case 'c':  /* loop count */                iterations = atoi(opt->value);                break;            case 'h':            default:                Help();                return 2;        }    }    PL_DestroyOptState(opt);    if (PR_DeleteSemaphore(SEM_NAME1) == PR_SUCCESS) {        fprintf(stderr, "warning: removed semaphore %s left over "                "from previous run\n", SEM_NAME1);    }    if (PR_DeleteSemaphore(SEM_NAME2) == PR_SUCCESS) {        fprintf(stderr, "warning: removed semaphore %s left over "                "from previous run\n", SEM_NAME2);    }    sem1 = PR_OpenSemaphore(SEM_NAME1, PR_SEM_CREATE, SEM_MODE, 1);    if (NULL == sem1) {        fprintf(stderr, "PR_OpenSemaphore failed (%d, %d)\n",                PR_GetError(), PR_GetOSError());        exit(1);    }    sem2 = PR_OpenSemaphore(SEM_NAME2, PR_SEM_CREATE, SEM_MODE, 0);    if (NULL == sem2) {        fprintf(stderr, "PR_OpenSemaphore failed\n");        exit(1);    }    thred = PR_CreateThread(PR_USER_THREAD, ThreadFunc, NULL,            PR_PRIORITY_NORMAL, PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);    if (NULL == thred) {        fprintf(stderr, "PR_CreateThread failed\n");        exit(1);    }    /*     * Thread 1 waits on semaphore 1 and posts to semaphore 2.     */    for (i = 0; i < iterations; i++) {        if (PR_WaitSemaphore(sem1) == PR_FAILURE) {            fprintf(stderr, "PR_WaitSemaphore failed\n");            exit(1);        }        if (counter == 2*i) {            if (debug_mode) printf("thread 1: counter = %d\n", counter);        } else {            fprintf(stderr, "thread 1: counter should be %d but is %d\n",                    2*i, counter);            exit(1);        }        counter++;        if (PR_PostSemaphore(sem2) == PR_FAILURE) {            fprintf(stderr, "PR_WaitSemaphore failed\n");            exit(1);        }    }    if (PR_JoinThread(thred) == PR_FAILURE) {        fprintf(stderr, "PR_JoinThread failed\n");        exit(1);    }    if (PR_CloseSemaphore(sem1) == PR_FAILURE) {        fprintf(stderr, "PR_CloseSemaphore failed\n");    }    if (PR_CloseSemaphore(sem2) == PR_FAILURE) {        fprintf(stderr, "PR_CloseSemaphore failed\n");    }    if (PR_DeleteSemaphore(SEM_NAME1) == PR_FAILURE) {        fprintf(stderr, "PR_DeleteSemaphore failed\n");    }    if (PR_DeleteSemaphore(SEM_NAME2) == PR_FAILURE) {        fprintf(stderr, "PR_DeleteSemaphore failed\n");    }    printf("PASS\n");    return 0;}