3) The following is alleged to be a solution to the critical section problem. Justify for...
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3) The following is alleged to be a solution to the critical section problem. Justify for its correctness or show a case in which it fails. (10 Marks) var turn:=1.2; boolean flag():0..1 begin flag[0): = 1; flag[1): = 1: turn:= 1; cobegin repeat flag[0]:=0; while flag[1] = 0 do if turn = 2 then begin flag[0] = 1; while turn = 2 do(nothing): flag[0] = 0; end (CRITICAL SECTION} turn:=2: flag[0] = 1; {REMAINDER SECTION} forever; coend end * E 3) The following is alleged to be a solution to the critical section problem. Justify for its correctness or show a case in which it fails. (10 Marks) var turn:=1.2; boolean flag():0..1 begin flag[0): = 1; flag[1): = 1: turn:= 1; cobegin repeat flag[0]:=0; while flag[1] = 0 do if turn = 2 then begin flag[0] = 1; while turn = 2 do(nothing): flag[0] = 0; end (CRITICAL SECTION} turn:=2: flag[0] = 1; {REMAINDER SECTION} forever; coend end * E
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