Q$15.$ Multithreading: Sleep

Consider the above example but with an Operating System that is able to turn off most power to the CPU when all threads are sleeping. A "sleep$($int milliseconds$)"$ function is available that causes the calling thread to sleep for the specified number of milliseconds.

Changing only thread$2()$:

void thread$2()$

$\{$

while$($true$)$

$\{$

threadRunning $=2$;

sleep$(1000)$;

$\}$

$\}$

Will the CPU enter a low power mode?