Below is the pseudocode of Peterson’s Algorithm. Explain why…
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Belоw is the pseudоcоde of Peterson's Algorithm. Explаin why indefinite postponement cаnnot occur in this аlgorithm. Note: The code of the threads (after the first four lines) is written TWICE in this question. The first time, the code of the two threads are side-by-side to make it easier to compare them. But in case this does not show up properly on your screen, the code is written again with T2's code written AFTER T1's. int favoredThread = 1;boolean t1WantsToEnter = false;boolean t2WantsToEnter = false;startThreads(); *** SIDE BY SIDE ***// T1: // T2:while (!done) { while (!done) { // non-critical code goes here // non-critical code goes here t1WantsToEnter = true; // this line marks t2WantsToEnter = true; // this line marks // entering mutual exclusion // entering mutual exclusion favoredThread = 2; favoredThread = 1; while (t2WantsToEnter && favoredThread == 2) ; // spin while (t1WantsToEnter && favoredThread == 1) ; // spin // critical section code goes here // critical section code goes here t1WantsToEnter = false; // this line marks t2WantsToEnter = false; // this line marks // exiting mutual exclusion // exiting mutual exclusion // more non-critical code goes here // more non-critical code goes here} }*** TOP AND BOTTOM ***// T1:while (!done) { // non-critical code goes here t1WantsToEnter = true; // this line marks entering mutual exclusion favoredThread = 2; while (t2WantsToEnter && favoredThread == 2) ; // spin // critical section code goes here t1WantsToEnter = false; // this line marks exiting mutual exclusion // more non-critical code goes here}// T2:while (!done) { // non-critical code goes here t2WantsToEnter = true; // this line marks entering mutual exclusion favoredThread = 1; while (t1WantsToEnter && favoredThread == 1) ; // spin // critical section code goes here t2WantsToEnter = false; // this line marks exiting mutual exclusion // more non-critical code goes here}
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