gtpi1m1tSystem Installation Support Reference

Release Block without ECB

User exit routine UCCRBK is invoked by the Release Block Without ECB routine before releasing the core block. This exit point, named RBK, can be activated dynamically. Exit point RBK is in copy segment CLHV of CSECT CCSTOR.

General Conditions at Entry

The registers at entry to UCCRBK are:

R1
FCT (Frame Control Table) entry pointer.

R2
SVM address of the storage block.

R3
Address of routine invoking CL$REL01.

R11-R15
See User Exit Routines - Common Entry Conditions.

System Conditions at Entry

System state
Supervisor

System mask
Masked for I/O interrupts

Protect key
0

Address Space
SVM.

Programming Considerations at Entry

  1. No core block management data records can be modified.
  2. See User Exit Routines - Common Programming Considerations for other considerations.

Programming Considerations on Return

See User Exit Routines - Common Return Conditions.

General Conditions on Return

See User Exit Routines - Common Return Conditions.