RE: How to make a program "sleep" for an amount of time?

The original poster wanted to wait for an object lock to be released though,
so this solution probably isn't an option in this instance... You'd have to
have another program sat polling to see when the object lock had gone and
then add the entry to the data queue...  

Regards,
Stu

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Hewitt, Rory
Sent: Thursday 13 January 2005 17:45
To: rpg400-l@xxxxxxxxxxxx
Subject: RE: How to make a program "sleep" for an amount of time?


Mike,
 
As others have pointed out, you can use the 'sleep()' function or the
'_WAITTIME' function or the DLYJOB command to simply wait for a period
of time.
 
However, all of these options don't give you much flexibility in terms
of the amount of time you want to sleep for. An option I like to use is
the QRCVDTAQ API with a wait time of -1 (forever) to wait for an entry
to appear on the data queue. Then you can have another process (another
program or a command) add an entry to the data queue (using the QSNDDTAQ
API) to 'wake up' your program. This is the easiest example of a
never-ending-program (NEP) - your program sleeps until it receives a
data queue entry, processes that data queue entry (or does some sort of
processing) and then goes back to sleep again.
 
This gives you total flexibility - you can decide when you want your
program to wake up. You can also include data in your data queue entry
to provide instructions on what the program should do - simply wake up,
end normally, do some other processing etc...
 
Regards,
 
Rory 
 
Rory M. Hewitt
Software Architect
Computer Associates
t: (650) 534-9056
f: (650) 534-9019
e: rory.hewitt@xxxxxx
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