gtpi1m5oSystem Installation Support Reference

VFA Restart

The VFA restart user exit, CVFX, allows you to examine VFA buffers that are marked as delay-file pending and to set a switch that indicates whether the buffers should be filed or purged. CVFX is activated from VFA restart (CVF2) while cycling the TPF system from restart to 1052 state.

CVFX is only activated when a selected VFA buffer control area (BCA) is marked as delay-file pending and TPF transaction services restart (CLM0) was unable to determine if any TPF locks are still held in an external lock facility (XLF) such as the multi-path lock facility (MPLF) or the limited lock facility (LLF).

Input

R7
Contains the address of the current VFA BCA under examination.

Programming Considerations

Return Values

R0 should contain one of the following return codes:

0
File the data buffer.

Nonzero
Purge the data buffer from VFA.