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While (lock = 1) wait Lock = 1 <critical section> Lock = 0

While (lock = 1) wait Lock = 1 <critical section> Lock = 0. While (lock = 1) wait Lock = 1 <critical section> Lock = 0. Loop1: While (turn != 1) wait <critical section> turn = 0 <noncritical section> GoToLoop1. Loop0: While (turn != 0) wait

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While (lock = 1) wait Lock = 1 <critical section> Lock = 0

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  1. While (lock = 1) wait Lock = 1 <critical section> Lock = 0 While (lock = 1) wait Lock = 1 <critical section> Lock = 0

  2. Loop1: While (turn != 1) wait <critical section> turn = 0 <noncritical section> GoToLoop1 Loop0: While (turn != 0) wait <critical section> turn = 1 <noncritical section> GoToLoop0

  3. Interested[0]=T Turn = 0 [While (Turn = 0) and (Interested[1]=T) Wait] <critical section> Interested[0] = F Interested[1]=T Turn = 1 [While (Turn = 1) and (Interested[0]=T) Wait] <critical section> Interested[1] = F

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