This section describes the various locations used by the system to store status information for its resources. Use Figure 1 and Figure 2 to help you locate the general placement of the control blocks and fields described in this topic. Figure 1 shows the control blocks that contain system and address space indicators in effect during normal operations. Figure 2 shows the control blocks that contain status indicators for the system and address spaces after an abnormal operation.
Status information is included in this topic for the following
system resources:
- Processors
- ENQ/DEQ control blocks
- WTO buffers and WTOR reply queue elements
- Service request block (SRB)
For a list of ENQ/DEQ names and associated resources, see ENQ/DEQ summary.
Figure 1. System and address space status
indicator locations - normal status areas
Figure 2. System and address space status
indicator locations - error status areas