Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	Re: Problem with cothread-1-12 on MacOSX (Leopard)
From:	Juan Carlos Guzman <[email protected]>
To:	Michael Abbott <[email protected]>
Cc:	EPICS Tech Talk <[email protected]>
Date:	Wed, 11 Mar 2009 14:45:50 +1100

Hi Michael,

On Tue, 10 Mar 2009, Michael Abbott wrote:
On Tue, 10 Mar 2009, Abbott, MG (Michael) wrote:
stdin, ... is a device and therefore doesn't work with darwin's
poll. In this case poll just spews POLLNVAL
Ok, so poll() on Darwin is busted.

Looks like I'll have to code up an emulation of poll() using select() and

Juan,

Can you try the attached patch and let me know how things behave.

This is a quick and dirty hack, if it's ok I'll work up a proper release.

The problem with using select is that its error handling is lousy: if any
file handle is invalid I have to back out and individually call select()
on each handle, one by one, to find the offending ones.

It works!. I just did quick check only with caget() and works fine using the python interpreter. All my previous attempts were also done using the interactive interpreter. I tested the camonitor.py script in tests area and it also works under Mac.