Dr. Chen Spring 2018 Question 2. Does the code shown below provide mutual exclusion? If not, show an interleaving in which mutual exclusion is not preserved. 3 int turn 1; 4 boolean tiwantsToEnter false; 5 boolean t2WantsToEnterfalse; 2 Thread Ty 34 void mainO 35 36 while Idone ) 7 startThreadsO 8 // initialize and launch both threads37 9 Thread T t2WantsToEnter true; 38 39 40 41 10 11 void mainO while (turn2 13 while (!done) 14 15 16 17 while CtlWantsToEnter) 43 t iWantsToEnter - true: while (turn 1 turn ) I/ end while // critical section code t2WantsToEnter false; // code outside critical section 45 46 18 19 while ( t2WantsToEnter47 48 49 50 51 52 // end outer while 53 11 end Thread T2 20 21 turn1; ) I/ end while // critical section code tlwantsToEnter false; // code outside critical section 23 24 25 26 27 28 29 // end outer while 30 / end Thread T1 Question 3. Which of the following mutual exclusion constraints the codes above have violated? Briefly explain. 1. 2. 3. Thread not in its critical section cannot block other threads from entering their critical sections Deadlock should be avoided Thread may not be indefinitely postponed from entering its critical