What happens to the lock in the following situation, when cond is true?

Question

I have this code ,now can anyone reply s what happens to the lock in the following situation considering that cond is true:-

for (;;) {
static mutex m;
Lock lock(m);
if (cond)
break;
... 
}

Thanks

score 5 · Accepted Answer · answered Apr 11 '12 at 07:32

5

Assuming Lock class follows RAII principle, it will unlock the mutex.

answered Apr 11 '12 at 07:32

Naveen

Does it unlock the mutex automatically? – hanumangdisciple Apr 11 '12 at 07:35
Yes, that is the point of RAII. It should unlock it in the destructor of Lock, which will be called when the scope is unwound (you exit the for loop). – Robinson Apr 11 '12 at 07:36

score 0 · Answer 2 · answered Apr 11 '12 at 08:56

0

The RAII allows to unlock the mutex at the end of the scope.

here is another example Scooped Lock

answered Apr 11 '12 at 08:56

RAB

2 Answers2