PROCESSING FILES FRO! RE!OTE STATIONS As in the case of V!/310 spool files, when files are received fre.
re.ote stations, RSCS obtains a TAG slot and builds a description of the
file in that slot. However, files from reaote stations are enqueued on
the active cut put queue (TAGACOUT in TAGAREA) When the file is co.pletely trans.itted, its TAG is dequeued fro. the
active output queue, closed to the V!/370 spool systea, and its freed
slot returned to the free TAG queue.
Figure 11 shows the relationships between the DSECTs described above. TAG TAG TAG DUD I..i.!:l.!U Inactive TAG Queue
These are TAG's representing
files waiting for transmission;
that is,waiting to be enqueued
on the Active Input TAG Queue
described below.
TAG TAG TAG ,-----",TI Free TAG Queue All TAG "slots" which are
not in use to describe a file
are enqueued on the free
TAG queue.
Active TAG Queue ITDTI There may be only one active
input file for any given link on
this queue. Each file which is
being read from the VM!370 spool' system and transmitted to a
remote station is represented by
a TAG on this queue.
TAG L- __ ...1 '--"""IT
Active Output TAG Queue
Each file which is being writ. ten
to the VM'370 spool system is represented by a TAG on thiS queue, Figure 11. Chaining ,of Data Areas Required for File TAG 8anipulation 3-30 IB! V8/370: Syste. Logic and Proble. Deteraination--Volu.e 3
RSCS Method of Operation and Program Organization
This section contains the following figures: I Figure 12 through 17 show how the Rses routines interact with each I other functionally. I FIgure 12 shows all of the Rses components at an overview level. I Figures 13 through show the parts of the individual components.
Rses Method of operation and Program Organization 3-31
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