Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Tue, 16 Feb 2016 10:05:08 -0600

On 02/15/2016 07:49 PM, Michael Davidsaver wrote:
> On 02/15/2016 08:19 PM, Michael Davidsaver wrote:
>> That "-1" stands out.  So far the only candidate I see is in
>> dbCaPutLinkCallback() if the target link isn't connected or writable. 
>> Which would mean that the main thread is racing the dbCa thread to
>> CA_CONNECT this link.
> 
> Ok, this is it.  So the obvious fix is to use/abuse caLink::monitor to
> wait for the link to connect.

Or poll dbcaStats(), although there seems to be a dbScanLock()/Unlock()
pair missing from that particular routine which could use fixing too.

- Andrew

-- 
There are only two hard problems in distributed systems:
  2. Exactly-once delivery
  1. Guaranteed order of messages
  2. Exactly-once delivery
 -- Mathias Verraes

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System