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Thanks, looks like a good solution for me to use.

Ron Power
Programmer
Information Services
City Of St. John's, NL
P.O. Box 908
St. John's, NL
A1C 5M2
Tel: 709-576-8132
Email: rpower@xxxxxxxxxx
Website: http://www.stjohns.ca/
___________________________________________________________________________
Success is going from failure to failure without a loss of enthusiasm. - 
Sir Winston Churchill




sjones@xxxxxxxxxxxxxx 
Sent by: rpg400-l-bounces@xxxxxxxxxxxx
22/02/2005 02:11 PM
Please respond to
RPG programming on the AS400 / iSeries <rpg400-l@xxxxxxxxxxxx>


To
RPG programming on the AS400 / iSeries <rpg400-l@xxxxxxxxxxxx>
cc

Subject
Re: Data Area Issue






We do something similar and looks like this. 

 C* Loop until lock is successful 
 C* 
 C     *IN90         Doueq     *Off 
 C     *LOCK         IN        RCVTAG                               90 
 C                   Enddo 
 C* 
 C                   Open      P0020 
 C* 
 C* Update RCVTAG with next tag number 
 C* 
 C     *IN90         Doueq     *Off 
 C* 
 C                   Eval      Rcvtag = Rcvtag + 1 
 C* 
 C     Rcvtag        Ifeq      0 
 C                   Eval      Rcvtag = Rcvtag + 1 
 C                   ENDIF 
 C* 
 C     Rcvtag        Setll     P0020                                  90
 C* 
 C                   Enddo 
 C* Update data-area 
 C                   OUT       RCVTAG                               90 
 C* 
 C                   Unlock    RCVTAG 
 C* 

Steve Jones



RPower@xxxxxxxxxx 
Sent by: rpg400-l-bounces@xxxxxxxxxxxx
02/22/2005 08:50 AM
Please respond to
RPG programming on the AS400 / iSeries <rpg400-l@xxxxxxxxxxxx>


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RPG programming on the AS400 / iSeries <rpg400-l@xxxxxxxxxxxx>
cc

Subject
Data Area Issue






I've searched the archives, but can't quite find an answer to my question 
that I'm looking for.  I have the following piece of code:
     ?* set receipt number
     c     *lock         in        rec#dta
     c                   eval      rec#dta = rec#dta + 1
     c                   eval      precpt# = rec#dta
     c                   out       rec#dta 
There can be mulitple versions of this program at any given time (cash 
receipts) and it seems that if both programs hit this the exact same time, 


one blows up.  My questions are:
1. On the OUT opcode, does it automatically release the locks?  Or should 
I be using the UNLOCK opcode as well?
2. Can I use lock logic here like record lock logic that RPG has?

Thanks,

Ron Power
Programmer
Information Services
City Of St. John's, NL
P.O. Box 908
St. John's, NL
A1C 5M2
Tel: 709-576-8132
Email: rpower@xxxxxxxxxx
Website: http://www.stjohns.ca/
___________________________________________________________________________
Success is going from failure to failure without a loss of enthusiasm. - 
Sir Winston Churchill
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