Programming Interface Information:
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HFOBK
Control Block Contents
HFOBK DSECT
Cross Reference (Contains links to field and bit definitions)
HFOBK Prolog
NAME : HCPHFOBK DESCRIPTION: Monitor I/O Domain Hi-Frequency Sample Data Area DSECT : HFOBK FUNCTION : Control block for I/O-domain high-frequency sample data. There is a separate HCPHFOBK for each I/O device that is being sampled. Data collected here are later transferred to the I/O domain monitor record, MRIODDEV. LOCATED BY : RDEVHFSD CREATED BY : HCPMOOIN DELETED BY : HCPMOOTM REFERENCES : none SERIALIZED : RDEVHFLK lockword in the I/O device's respective RDEV RELOCATION CONSIDERATIONS : None COMPATIBILITY AND MIGRATION CONCERNS : none
HFOBK Control Block Content
HFOBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure HFOBK Monitor I/O Domain Hi-Frequency Sample Data Area 0000 0 Signed 4 HFOCOUNT Number of samples 0004 4 Signed 4 HFOCNTIO Number of queued SSCH requests, excluding the active requests from field RDEVCTIO 00000008 HFO$END * End of HFOBK 00000001 HFOSIZE (HFO$END-HFOBK+7)/8 HFOBK size in doublewords
HFOBK Storage Layout
*** HFOBK - Monitor I/O Domain Hi-Frequency Sample Data Area * * +---------------------------+---------------------------+ * 0 | HFOCOUNT | HFOCNTIO | * +---------------------------+---------------------------+ * 8 * *** HFOBK - Monitor I/O Domain Hi-Frequency Sample Data Area
HFOBK Cross Reference
Symbol Dspl Value -------------- ---- ----- HFO$END 0004 00000008 HFOCNTIO 0004 HFOCOUNT 0000 HFOSIZE 0004 00000001
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