SharedPrinter

Demonstrate the mechanism of a Java monitor by a shared printer

This project includes the FSP design and Java multi threaded implementation for a shared printer used by 2 students and 1 technitian.

FSP There are 3 induvidual processes.

1. Printer process
• Initialize with 3 papers
• Should have atleast 1 paper to proceed printing
• Users must have mutually exclusive access to the printer
• Paper count is decremented in each print
2. Student Process
• Initialize with number of documets to print (1 document = 1 paper)
• Must take mutually exclusive access to printer to print
• Print document and decrement document count
• Release control of the printer
3. Technician Process
• Repeatedly check if the printer is out of papers
• When printer is out of papers, fill it with maximum number of papers

Then the composite process will be,

• One student process that is to print 3 documents.
• One student process that is to print 2 documents
• One technician process that refills the printer with 3 sheets of paper.
• One printer process that can hold up to 3 sheets of paper.

In addition to the above mechanism, The java implementation of the scenario will add another user who is a technician who re-fills the toner of the printer.