HOMEWORK PROBLEM 9X_2         INTRODUCTION TO Ada   586


  PURPOSE:      To gain some experience with Ada9X. This problem
                can be worked on the gnat compiler. (in June)


  END RESULT:   A protected type declaration for the reader/writer
                problem, 17.8.1, that gives the writers priority.


  PROBLEM:      Page 454, Barnes Programming in Ada, exercise 17.8.1(1)


  TURN IN:      Printout of whatever you can capture.


  OBSERVE:      gnat naming conventions for now, require the file name
                to be the compilation unit name with .ads for specs and
                .adb for bodies.
                This is just one first example of new tasking features
                added to Ada9X, there are more.


  METHOD:       Read Barns book, section 17.8, pages 448-454
                Compile with command  gcc -c gnate gnatf xxx.adb
                (There is usually no need to compile specs that have bodies)
                Link with  gnatbl -o  xxx  xxx.ali
                (having compiled non generic bodies first)


  READING:      BARNES  17.8
                Ada9X Reference Manual  9.4, 9.5, 9.7