//printf("(%s) No free fragment...",xbt_thread_self_name());
result = mmalloc(md, BLOCKSIZE);
//printf("(%s) Fragment: %p...",xbt_thread_self_name(),result);
//printf("(%s) No free fragment...",xbt_thread_self_name());
result = mmalloc(md, BLOCKSIZE);
//printf("(%s) Fragment: %p...",xbt_thread_self_name(),result);