Consider the following program segments for two different processes (P1, P2) executing concurrently and where B and A are not shared variables, but X starts at zero as a shared variable P1 DO A 1, 5 X X 1 ENDDO P2 DO B 1, 4 X X 1 ENDDO If the processes P1 and P2 execute concurrently once at any speed, what are the possible resulting final values of x Explain your answers

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Question: Consider the following program segments for two different processes (P1, P2) executing concurrently and where B and A are not shared variables, but X starts

Consider the following program segments for two different processes (P1, P2) executing concurrently and where B and A are not shared variables, but X starts at zero as a shared variable.

DO A = 1, 5

X =X - 1

ENDDO

DO B = 1, 4 X =X +1

ENDDO

If the processes P1 and P2 execute concurrently once at any speed, what are the possible resulting final values of x? Explain your answers.

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