Monitoring and Controlling Process Status

Table of Contents

Understanding Process Status
STATUS Task Attribute
WFL Task State Expression
Mix Display Commands
Y (Status Interrogate) Stack States
Monitoring Changes in Process Status
Controlling Process Status
Terminating a Process
Thawing a Library
Suspending and Resuming Processes
Preparing a Task Variable for Reuse
Preventing Process Scheduling
Preventing Process Suspension
Checking File Residence
Using AUTORESTORE for Disk Files
Identifying Tape Files
Using UNITNO and OMITTEDEOF for Unlabeled Tape Files
Using the AUTORM Option
Using the ORGUNIT Value for ODT Files
Using Conditional ACCEPT Statements

During its lifetime, a process can pass through several distinct states. These states characterize whether the process is currently executing, and if not, why not. You can design programs to monitor and modify process states through the use of task attributes and related expressions. You can also monitor process status through the use of system commands.

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