CSC 389 Spring 2005 Programming Project I (Parts 1 and 2)
This project has two components that are listed below. More
directions follow the two items and I will post information to
help explain what the parts of the loader.c program do. I will
also provide some sample code to help you get the menu option
added.
1. You will document the loader.c program and turn it in.
Turn-in a written description of your program (use a word
processor) with diagrams showing the relationships of the
processes, fully documented program source listing.
2. You will write the necessary code to implement a menu
select to allow you to choose to print to the screen or to
a file. You only have to document the code you add. This
program has to compile and execute. You will turn in the
source code.
Part 1
Document the simulated Loader, CPU, and Printer program that
utilizes concurrent processes communicating via shared memory on
a Unix system. You may make enhancements to the loader.
Loader -- The loader process will load programs from a file
called cpu.dat into a section of shared memory. The shared memory
should be large enough to hold two programs simultaneously.
CPU -- The cpu process will execute the programs that have been
loaded into the shared memory by the loader process. The cpu will
store each source statement and related output in a section of
shared memory for the printer process to print.
Printer -- The printer process will print the source listing and
output for the programs executed by the cpu into a file named
cpu.output. *** You will need to add this part.
The cpu.dat file contains lines with an operator (+,-,*,/, or %)
followed by two integer operands similar to the following:
+ 2 3
* 4 5
? 0 0
Jobs stored in the shared memory in the running and ready states
will have an associated process control block (PCB). The PCB's
