Re: [Boost-users] newbie thread synchronization question

If I use it in from multiple threads with code that looks like: // s is an instance of Shared s.lock(); int q = s.getQty(); ++q; s.setQty(q); s.unlock();

It's correct locking, but if getQty/setQty throw, the object never gets unlocked. So it's worth useing some RAII-style technique.