在信号处理程序中销毁pthread mutex / rwlock

How to correctly destroy pthread mutex or rwlock in signal handler? For example - in the code below i has main thread and 3 another threads. All threads do some tasks in infinity loop on some array, using mutexes and locks. Because main thread is also doing some task, the only way to exit from program - using signal handler. But in this way i can't destroy my mutex/rwlock object, because there's no guarantee that object is unlocked. And if I'll try to unlock it, of course one of thread will lock it again. And when i'm trying to launch my program again, that print corrupted result. So how can i solve this problem? There is example of my code with rwlocks:How to correctly destroy pthread mutex or rwloc