Spooler Plus Programmer's Guide

Spooler Plus Programmer’s Guide—522293-003
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Introduction to the Spooler Plus
Subsystem
The Spooler Plus subsystem serves as a buffer between an application writing to a
print device and the device itself, allowing applications to create hard-copy output
without affecting the status of print devices. The Spooler Plus subsystem performs its
work by storing the output from each application on disk and monitoring the status of
print devices. When the appropriate device becomes available, the Spooler Plus
subsystem prints the output.
Topics described in this section include
Spooler and Spooler Plus Comparison on page 1-2
Spooler Plus Features on page 1-2
Spooler Components on page 1-3
Disk Files Maintained by the Spooler on page 1-6
Multiple Spoolers on page 1-6
Spooler States on page 1-7
Spooling From an Application Program on page 1-9
Collectors on page 1-10
Print Processes on page 1-13
Devices on page 1-16
Routing Structure on page 1-22
Jobs
on page 1-23
The Spooler and Batch Jobs
on page 1-26