$30.$Consider the following solution to the mutual$-$exclusion problem involving two processes P$0$ and P$1.$ Assume that the variable turn its initialized to $0.$ Process P$0\text{'}$s code is presented below.

$//$

While$($turn $!-0)\{\}\frac{?}{?}**DO$ nothing and wait"$/$

Critical section $\frac{?}{?}**dots**$

Turn$==$;

p$/$

For process $P1,$ replace $0$ by $1$ in above code. Determine if the solution meets all the required conditions for a correct mutual$-$exclusion solution.