Description

List structure users can use the IXLVECTR macro to check or modify their list notification vectors. Cache structure users can use the IXLVECTR macro to check or modify their local cache vectors.

Note: The following information assumes that you are familiar with either a list or cache services macro and that you are using either a list or cache structure.

If you are using a list structure: Use the IXLVECTR macro to perform the following operations on your list notification vector.

Modify the number of entries in your list notification vector.
Test whether a list or an event queue is empty or nonempty.
Test a range of vector entries to determine whether the monitored objects are empty or non-empty.

If you are using a cache structure: Use the IXLVECTR macro to perform the following operations on your local cache vector:

Modify the number of entries in your local cache vector.
Determine the validity of data items in your local cache buffer.
Test a range of vector entries to determine whether local cache vector entries are valid or invalid.

For more information: The z/OS MVS Programming: Sysplex Services Guide contains a detailed description of the functions provided by the IXLVECTR macro as well as guidance for using the macro and examples of serialization protocols for use with the TESTLOCALCACHE request. Before using the IXLVECTR macro, be sure to read this information. The reference material provided here assumes you have done so.