EPICS Home EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

Format page
for printing


Search Tech-talk
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  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 
<== Date ==> <== Thread ==>
Subject: epicsThread
From: Vikram Bhagat <[email protected]>
To: "[email protected]" <[email protected]>
Date: Mon, 26 Aug 2013 01:18:38 -0700 (PDT)
Dear all,
      I want to know how to create and handle EPICS thread at run time.
In my application, i am using serial communication.   I am reading/writing data from serial port.   
I am using Asyn driver. 

In my application i have added one more functionality (asyn reason) to wait for user-define  time and then complete record processing.
In this function caput <PV name> with time in seconds will wait for that much seconds (I put one loop to read system time and check that user-defined time has been reached or not) and then "return asynSuccess".

This is working fine but problem now is->  the system is not processing any other record/PV  till the delay time will complete.  Means if i user requested delay time for 5 minutes--> the system will not process other reading or writing PV till 5 minutes complete.  

How i can handle this situation? while system is waiting for time delay other record needs to be processed and have to give values or write to the output.

I think i have to create epicsThread for this delay. so it will run in separate thread and other functions can work independently. But in my case after completion of my delay i have to delete Thread ... How i can delete that Thread and make sure that my asyn driver will return asynSuccess for that delay function?

Thanks & regards
Vikram 
Replies:
Re: epicsThread Michael Davidsaver
Navigate by Date:
Prev: Re: Segmentation fault et_wish Dirk Zimoch
Next: Re: epicsThread Michael Davidsaver
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: Segmentation fault et_wish Dirk Zimoch
Next: Re: epicsThread Michael Davidsaver
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 
ANJ, 20 Apr 2015 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·