RE: Free Java Objects In RPG

I was seeing heap operation errors a couple of months ago on some http
stuff. I applied the latest HTTP, database and group ptfs and it seemed
to fix it. At least I haven't seen it since. This was on V5R3.

HTH

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
Michael_Schutte@xxxxxxxxxxxx
Sent: Thursday, October 05, 2006 10:19 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: Free Java Objects In RPG


Good morning all,

I'm having trouble with one of CGI Web RPG programs.  This particular
web
program is using java to get data from a windows machine.  At the start
of
the program, I start my grouping of java objects.

 temp = BldJavaStr('a');
 env = getJniEnv();
 beginObjGroup (env : 10000);

Then go on to execute my custom java apps to retrieve the data.

When finished, I free my object group.

endObjGroup (env);
freeLocalRef (env : temp);


This works most of the time, however there are times when I get the
following messages in the job log...

The requested heap space operation is invalid.
The pointer parameter passed to free or realloc is not valid.

These don't stop the program from running, however, there are times a
system error will pop up (this doesn't occur on every run) and cause the
program to stop running.

                         Additional Message Information
 Message ID . . . . . . :   RNQ0299       Severity . . . . . . . :   99
 Message type . . . . . :   Sender copy
 Date sent  . . . . . . :   10/05/06      Time sent  . . . . . . :
10:36:47
 Message . . . . :   The RPG dump failed due to error (C).
 Cause . . . . . :   The dump of the RPG procedure was halted because of
a
   system error.
 Recovery  . . . :   Check the status of service program QRNXIE and file
   QPPGMDMP.
 Possible choices for replying to message . . . . . . . . . . . . . . .
:
   C -- Cancel processing
   S -- Obtain system dump

Bottom
 Reply  . . . :   S
 Press Enter to continue.

The message before this error message is on that I listed before.

Pointer not set for location referenced.
                         Additional Message Information
 Message ID . . . . . . :   MCH3601       Severity . . . . . . . :   40
 Message type . . . . . :   Escape
 Date sent  . . . . . . :   10/05/06      Time sent  . . . . . . :
10:36:47
 Message . . . . :   Pointer not set for location referenced.
 Cause . . . . . :   A pointer was used, either directly or as a basing
   pointer, that has not been set to an address.

Bottom
 Press Enter to continue.
 F3=Exit   F6=Print   F9=Display message details   F12=Cancel
 F21=Select assistance level


Does anyone have experience with this error message?  I thought it had
something to do with the  temp variable (temp = BldJavaStr('a');) when
passed to the freelocalref procedure.  I just can't seem to figure out
what's going on.

Michael Schutte
Dig in! Bob Evans New Knife & Fork Sandwiches - This much homestyle
goodness demands a Knife & Fork!