Homework 6

22C:116, Spring 2002

Due Monday Mar 4, 2002, in class

Assume the usual general instructions! Note that there's an exam coming up on March 13.

1. A Problem Consider the problem of printing files. One common approach is to spool the file to disk and then passing that file to a background process that does the actual printing. On a virtual memory system with one address space per process, one could equally well imagine storing the file to be printed in the virtual memory assigned the print process. Both of these methods could be used, for example, under UNIX, but only the former is used. Is there any technical reason to prefer one approach over the other, or is the common use of the former merely a historical accident.

2. Problems from the Text:
   Do problems 6 and 11 on page 374 in the text.
   Do problems 16, 19 and 22 on page 375 in the text.
   Do problem 24 on page 375, but reverse the order of the requests given!
   Do problems 26 and 32 on page 376 in the text.