It is undefined whichthread runs after a How can it sleep with interrupts disabledNeed to be able to reference current threadwait S Disable interrupts while Svalue 0 Enable interrupts ID: 425595
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withdraw (account, amount) { wait(S); balance = get_balance(account); balance = balance Ð amount; put_balance(account, balance); signal(S); return bala It is undefined whichthread runs after a How can it sleep with interrupts disabled?!Need to be able to reference current threadwait (S) { Disable interrupts; while (S-�value == 0) Enable interrupts;} mutex Ð control access to readcount!Semaphore w_or_r Ð exclusive writing or reading ac one thread can call Join on another!A thread cannot call Join on itself!A thread should be able to call Join on a thread that hasa