test series doubt

Question

hi,

C

an anyone answer this question? @arjun sir, 

 According to me there is no mutual exclusion and hence deadlock is not created. 

Comments

here  deadlock is possible think when procees pi line number two means i = true

same to pj  line number two j=true after this  both process stuck in while loop so here deadlock is possible okkk

mutual exclusion is also possible

Answer 1

Consider alternately executing the initial instructions of initializing i and j with TRUE and FALSE. You will find that i and j both can become TRUE. Hence, both will be trapped in the while() loop. So, deadlock is possible. 

Further, if we execute the instructions serially, i.e. first let Pi enter the CS and then Pj enter the CS, then mutually exclusion is violated. 

Comments

But as per deadlock prevention, If ME is violated then deadlock should also be violated ?  @ankit3009

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@rish1602 Bro, Mutual exclusion is a necessary condition for deadlock but not a sufficient condition for the deadlock to happen.

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got it thanks :)