Subject: |
Re: Permissible in C to call CA I/O functions from callback? |
From: |
"J. Lewis Muir" <[email protected]> |
To: |
[email protected] |
Date: |
Fri, 07 Nov 2014 10:06:17 -0600 |
On 11/6/14 10:57 PM, J. Lewis Muir wrote:
> I may be missing something basic here. In the "Channel Access
> Reference Manual" section titled "Polling the CA Client Library From
> Single Threaded Applications," it says, "If preemptive call back
> is not enabled, then for proper operation CA must periodically be
> polled to take care of background activity." I took that to mean it
> only applied in nonpreemptive mode and found no such statement about
> needing to call ca_pend_event (or others?) when in preemptive mode.
Also, in the CA reference manual documentation for ca_context_create(),
it says, "if preemptive callback mode is enabled the application is
no longer burdened with the necessity of periodically polling the CA
client library in order that it might take care of its background
activities." I read that to mean calling ca_pend_event is unnecessary
when in preemptive mode.
Regards,
Lewis
- References:
- Permissible in C to call CA I/O functions from callback? J. Lewis Muir
- Re: Permissible in C to call CA I/O functions from callback? Andrew Johnson
- Re: Permissible in C to call CA I/O functions from callback? J. Lewis Muir
- Navigate by Date:
- Prev:
Asyn and stringin records freddie.akeroyd
- Next:
Re: Permissible in C to call CA I/O functions from callback? Andrew Johnson
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
<2014>
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
- Navigate by Thread:
- Prev:
Re: Permissible in C to call CA I/O functions from callback? J. Lewis Muir
- Next:
Re: Permissible in C to call CA I/O functions from callback? Andrew Johnson
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
<2014>
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
|