Use this system macro to get an available coupling facility work block and
return the address.
Format
- label
- specifies a symbolic name that can be assigned to the macro
statement.
- TYPE=type
- specifies the type of coupling facility work block to get, where
type is CFCB, CFRB, CFSB, or CFVB.
Entry Requirements
None.
Return Conditions
- Control is returned to the next sequential instruction (NSI).
- TPF system processing ends with a catastrophic error if there are no
coupling facility work blocks available.
- Register 15 (R15) contains the coupling facility work block
address.
- The coupling facility work block type is inserted into the first 4 bytes
of the obtained block. The remaining bytes in the block are set to
zeros.
Programming Considerations
- This is a restricted use macro.
- This macro can be processed on any I-stream.
- Enter the RCFBC macro to release the coupling facility work block when you
are done using it.
Examples
None.