Considering the following algorithm, which of the following requirements are satisfied?

turn

$=$

$0$

Thread

$1$

While

$($

true

$)$

$\{$

While

$($

turn

$!$

$=$

$0$

$)$

;

turn

$=$

$1$

;

$/$

$*$

$$start of critical section

$*$

$/$

$*$

$$end of critical section

$*$

$/$

turn

$=$

$0$

;

Thread$2$

While $($true$)\{$

While$($turn $!=0)$;

turn $=1$;

$/*$ start of critical section $*/$

$/*$ end of critical section $*/$

turn $=0$;

$\}$