Howdy all,
 
I'm experiencing some bizarre IOWAIT problems.
 
Scenario 1:
-----------
Issue nowait I/O read on socket
Issue nowait I/O read on message file
IOWAIT
Socket I/O completes
Issue nowait I/O read on socket
IOWAIT
Message file I/O completes
(remote host now disconnects)
Socket I/O completes (ccode = 1, so program shuts down)
 
Scenario 2:
-----------
Issue nowait I/O read on socket
Issue nowait I/O read on message file
IOWAIT
Socket I/O completes
Issue nowait I/O read on socket
IOWAIT
(remote host now disconnects)
...
... minutes pass ...
...
... (IOWAIT never sees the disconnect! It seems to hang forever) ...
...
Message file I/O completes
IOWAIT
Socket I/O completes (ccode = 1, so program shuts down)
 
Problem : If there are outstanding message file reads, it appears to prevent
socket I/O errors from ever being returned to IOWAIT. The socket I/O never
completes until the message file I/O completes.
 
Anyone else see this? Solutions? (And *please* don't tell me to use socket
and/or message file read timeouts... I do *NOT* want this thing to poll. =P)
 
-Dan
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|Dan Hollis -- Pharmacy Computer Services, Inc.|
[log in to unmask]      -     (503)476-3139|
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