OSGui

How to run program: - Navigate to src file - In terminal type: make run

Process:

• UserThread parses the file it is reading from

• if command is save:

  • updates user label on GUI
  • requests a disk resource and continues reading from file until it finds .end command
  • keeps track of the file length
  • it stores current line in StringBuffer, gets a free sector from the available disk and then puts system to sleep for (200*speed offset from GUI).
  • writes the current line in requested disk number

• if .end command is found

  • gets the starting sector of the file from the disk it wrote to by subtracting the returning free sector by the file_length
  • makes a new FileInfo object and stores the disk number, starting sector and file length
  • it makes a new entry in the directory with the name of the file as the key and its FileInfo as the value
  • releases disk resource

• if command is print:

  • creates and runs a new PrintJobThread with the file name and user index for GUI in Constructor
  • PrintJobThread looks up the file name in the directory manager
  • it stores the FileInfo from that file
  • gets a free printer
  • afterwards, goes in a loop until file length reached
  • in loop, make the system sleep for (200*speed offset from GUI)
  • reads sector data into data StringBuffer
  • system sleeps for (2750*speed offset from GUI)
  • sends the data to printer print function

NOTE: GUI Updates more frequently than I wrote above. It updates every time it requests/releases a resource and it also updates when printing, reading, saving etc. In my code there are comments that document the updates going on in the GUI.