20th call to dx_stopch hangs

From: Chad Fox

The fact that it failed on the 20th call every time was apparently just a big coincidence. It lead me to believe it was more of a resource issue than a problem with a race condition.
After modifying the code a little the failure became more sporadic, leading me to believe it was actually a race condition.

I modified the code to use an async stopch and use sr_waitevt to monitor for a TM_USRSTOP event.
I use ATDX_STATE to verify the state is not idle before the call to stopch and is idle after.
With that code I was able to do 75,000+ dx_stopch calls with no failures.
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Received on Fri May 28 09:15:08 2004