check if your locks is working your operating systems, POSIX

the below is to test if the lock functions on your operating system is working *nix (Linux,Unix,MacOS,...etc)



//implement the below functions
void lock(...){}
void unlock(...){}
void init_locks(...){}



void *test_sleep_th(void * param){
    int id,sleep_for;
    id=((test_sleep_t*) param)->id;
    sleep_for=((test_sleep_t*) param)->sleep_for;
    lock(reader_lock);
    printf("thread %d will sleep for %d seconds\n",id,sleep_for);
    sleep(sleep_for);
    printf("thread %d wakedup\n",id);
    unlock(reader_lock);
}


int main() {
    test_sleep_t tst[5];
    pthread_t *threads;
    int i;

    threads=malloc(sizeof(pthread_t[5]));
    for(i=0;i<5;i++){
        tst[i].id=i+1;
        tst[i].sleep_for=i+1;
        pthread_create(&threads[i],NULL,test_sleep_th,&tst[i]);
    }
    for (i = 0; i < 5; i++) {
        pthread_join(threads[i], NULL);
    }

return 0;
}