Test Program 9

Input

-

Output

Out of 12 processes created, if N processes complete execution, then N data files each containing 100 consecutive integers (PID-3)*100+1 to (PID-3)*100+100 are created.

Description : The program will create a file with name "num.dat" with open permission. Integers 1 to 1200 are written to this file and file is closed. The program will then invoke Fork system call four times, back to back to create 12 processes and Exec system call is invoked with file "pgm1.xsm". The program for "pgm1.xsm" is provided here.

int main()
{
decl
    int temp, fd, permission, iter, pid;
    string filename;
enddecl

begin
    filename="num.dat";
    permission=1;
    temp=exposcall("Create",filename,permission);
    fd=exposcall("Open",filename);

    if(fd>=0) then
        iter=1;
        while(iter<=1200) do
            temp=exposcall("Write",fd, iter);
            iter=iter+1;
        endwhile;    
        temp=exposcall("Close",fd);

        pid=exposcall("Fork");
        pid=exposcall("Fork");
        pid=exposcall("Fork");
        pid=exposcall("Fork");
        temp = exposcall("Exec","pgm1.xsm");
    else
        temp=exposcall("Write",-2, "OPEN FAIL");
    endif;

    return 0;
end
}