Spooler Plus Programmer's Guide

Using the Spooler Interface Procedures

Spooler Plus Programmer’s Guide—522293-003

2-11

Summary of Spooling From an Application Program

Example 2-3. Annotated Example of Level-3 Spooling (page 1 of 3)

! This program is an example of level-3 spooling. It consists of 4

! procedures: error, sperror, getline, and root, and it calls the

! Guardian procedures OPEN, CLOSE, and STOP. It uses the

! spooler interface procedures SPOOLSTART, SPOOLWRITE, and SPOOLEND

! to spool the job.

! error --this procedure handles I/O errors. It performs the

! necessary steps for recovery or it aborts the program.

! sperror --this procedure handles spooler errors. It performs the

! necessary steps for recovery or it aborts the program. It has

! a single INT value parameter that is the error code returned

! from the spooler interface procedures.

! getline --this procedure returns a line of data for spooling.

! It is an INT procedure that returns a zero (FALSE) value when

! it has no data to spool. It has two parameters: line and

! length. line is a reference to a 40-word (80-byte) array.

! The array is filled with the line of data to be spooled.

! length is a reference to an INT that is set to the number of

! bytes to be written from line.

! root --this is the main procedure. It performs all the file

! management to the collector and calls the other procedures in

! the program as needed.

?nolist

INT counter := 0;