// batch.cpp     Dave Reed      9/10/02
//
// SIMPLE batch simulator.  A collection of jobs are read in from
// a file, and then executed in order (no time sharing).
///////////////////////////////////////////////////////////////////////////////

#include <iostream>
#include <iomanip>
#include <string>
#include "JobQueue.h"
using namespace std;

const int LOAD_DELAY = 5;               // setup time for a new job
const int IO_DELAY = 3;	                // time to perform I/O operation
const string JOB_FILE = "jobsIO.dat";   // file containing job data

int main()
{
    JobQueue CPUjobs(JOB_FILE);

    int time = 0;

    while (CPUjobs.JobsRemaining()) {
		int current = CPUjobs.GetCurrentID();

        if (time < CPUjobs.GetCurrentStart()) {
            time = CPUjobs.GetCurrentStart();
		}

        cout << setw(4) << time << ": LOAD JOB " << current << endl;
        time += LOAD_DELAY;
        cout << setw(4) << time << ":   START JOB " << current << endl;

        JobStatus status = OK;
		while (status != DONE) {
            time++;
			status = CPUjobs.ExecuteCurrentJob();

			if (status == IO) {
				cout << setw(4) << time << ":     I/O JOB " << current << endl;
                time += IO_DELAY;
				cout << setw(4) << time << ":     RESUME JOB " << current << endl;
			}
		}

		cout << setw(4) << time << ":     FINISH JOB " << current << endl;
        CPUjobs.RemoveCurrentJob();
	}

    cout << "DONE PROCESSING" << endl;

    return 0;
}