WTO buffers and WTOR reply queue elements
- WQE (write-to-operator queue element) exists in the CONSOLE address
space.
- The CVTCUCB field of the CVT points to the UCM.
- UCM + X'18' points to the first WQE (or zero).
- UCM + X'3C' points to the last WQE (or zero).
- UCM + X'1C' points to the first ORE (or zero).
- WQE + 0 (4 bytes) points to the next WQE (or zero).
- ORE + 0 (4 bytes) points to the next ORE (or zero).
- ORE+ X'28' points to the WQE for the ORE (or zero if the
WQE is not queued to the ORE yet).
- UCM + X'2C' (2 bytes) is the maximum number of OREs (RLIM).
- UCM + X'2E' (2 bytes) is maximum number of WQEs.
- UCM + X'34' (4 bytes) is number of active WQEs.
- UCM + X'38' (2 bytes) is number of outstanding OREs.
- In IPCS, the COMCHECK subcommand performs console
services analysis and lists outstanding WTORs.