outqueue2.m

8个进程的改进版CPU schedule 算法-FCFS

%
%Suppose always move the head out of the queue, and when it is moved out,
%we have the last element available(set it to be 0 for the QReady and EndTime for the QDisk)!
%
function [Q,Head]=OutQueue2(Q,Qlen,default)
disp('=========in OutQueue2================');

i=1;
Head=-1; %Empty Queue or Error

if Q(1,1)~=0 
   Head=Q(1,1); %Head is only the head process
else
   fprintf('This is a EMPTY Queue!\n');
   return;
end

while i<Qlen
   Q(i,:)=Q(i+1,:);
   i=i+1;
end
Q(Qlen,1)=0; %for the P
Q(Qlen,2)=default; % 0 for the QReady, EndTime for QDisk